From the law of that Aluminium Foil
Plates, normal wear the longer the better use of equipment. In other words, to make the use of equipment in use on the best, we must ensure that normal wear and tear of equipment equal to the natural life. Thus, we can draw such a basic concept, that is, the device is put into production after use, I hope it is in use of the available time better.
Device performance level of availability of time is determined by the equipment downtime. Aluminum wire To achieve this goal, various factors involved, it is the device itself, in addition to the quality of the composition (including performance reliability and durability, the structure is reasonable, the selection of advanced, reasonable, processing, manufacturing quality assurance, etc.) is the basic condition, the use of the correct, rational use, well maintenance, careful management, the objective is to extend the life of equipment requirements, give full play equipment effectiveness, improve the basic conditions for the time availability . Equipment downtime, the more work, the less time available, the time may be lower utilization; Conversely, time availability is higher.
Our vision is to require device can rate one hundred percent of the time. Practical work countless examples show that the same model, same manufacturer in the same period production equipment used in the same environmental conditions, because the conditions of use and maintenance pros and cons, effects a great disparity. This situation not only between two devices, even in the same piece of equipment will vary depending on the operational use of the use of personnel, maintenance level differences, the use effect is not the same.
2013年9月29日星期日
Insulated aluminum processing two classification
Insulation aluminum processing technology can be divided according to two categories: embedded and dispensing roll style. At present, there is no corresponding standard insulation Aluminum Film in Europe insulation systems generally use mass of technology, North America and Korea perform AAMA TIR-A8-90 plastic injection-type aluminum alloy structure building insulation performance specifications. Our bridge insulated walls and windows and doors in both the pass there dispensing strip style.
(1) Rolling embedded
Is dedicated heat insulation Aluminum Diamond Plate doors and windows, inside and outside the two aluminum insert special notch, through special machinery rolling, leaving the insulation strip fused with internal and external profiles, this approach in European countries, especially Germany and Italy, Central European countries generally adopted.
(2) dispensing formula
The basic principle is to treat aluminum alloy into two parts between the two using a specially formulated polymer insulating polymer eleven off hot glue to combine. Thus, one hundred aluminum alloy is formed between the inner and outer part of the effective heat insulation layer, so that through the door window frame profiles or fan heat dissipation pathway is blocked, to achieve energy-efficient insulation purposes.
(1) Rolling embedded
Is dedicated heat insulation Aluminum Diamond Plate doors and windows, inside and outside the two aluminum insert special notch, through special machinery rolling, leaving the insulation strip fused with internal and external profiles, this approach in European countries, especially Germany and Italy, Central European countries generally adopted.
(2) dispensing formula
The basic principle is to treat aluminum alloy into two parts between the two using a specially formulated polymer insulating polymer eleven off hot glue to combine. Thus, one hundred aluminum alloy is formed between the inner and outer part of the effective heat insulation layer, so that through the door window frame profiles or fan heat dissipation pathway is blocked, to achieve energy-efficient insulation purposes.
2013年9月18日星期三
Common quality defects in aluminum foil which
The foil strip rolled into a variety of semi-finished and finished products in the process , and in the finishing foil , annealing , transport, packaging and other processes in the production process , inevitably there will be some defects. The generation of these defects , in part, ingot casting defects strip itself sometimes the injection ingot casting process can be exposed , and sometimes can not be found , and in the subsequent further processing to exposure ; another part is in foil rolling , finishing , annealing , transport, packaging and other processes generated in the production process .
These defects generation is largely due to equipment failure , mishandling , improper adjustment of process parameters , the operator unskilled and various other causes. Production process of the aluminum foil , aluminum foil quality defects caused many species, mainly a large number of pinholes, the thickness tolerance, poor flatness , belt for various reasons , to reduce these defects , to improve the quality of the foil material is useful significance .
State in a thin Al Foil rolling , the thickness uniformity of the material , the rolling speed, tension , rolling oil is very sensitive to various defects in the most critical solution belt and pinholes , especially high speed rolling is more important. Belt and pinholes quality billet aluminum foil produced with extremely close .
Casting , hot rolling billet inclusions in the airway , the process of rolling metal and non-metallic pressure on people , rub , scratch and uneven thickness of aluminum foil rolling and so give cause great difficulties caused by broken belt , pinhole , the thickness of ultra- poor . And that these defects affect each other , thinner aluminum pinhole more quiet , the more likely the more pinholes belt , belt and more, rolling up speed in the head and tail must have been part of the foil thickness tolerance.
These defects generation is largely due to equipment failure , mishandling , improper adjustment of process parameters , the operator unskilled and various other causes. Production process of the aluminum foil , aluminum foil quality defects caused many species, mainly a large number of pinholes, the thickness tolerance, poor flatness , belt for various reasons , to reduce these defects , to improve the quality of the foil material is useful significance .
State in a thin Al Foil rolling , the thickness uniformity of the material , the rolling speed, tension , rolling oil is very sensitive to various defects in the most critical solution belt and pinholes , especially high speed rolling is more important. Belt and pinholes quality billet aluminum foil produced with extremely close .
Casting , hot rolling billet inclusions in the airway , the process of rolling metal and non-metallic pressure on people , rub , scratch and uneven thickness of aluminum foil rolling and so give cause great difficulties caused by broken belt , pinhole , the thickness of ultra- poor . And that these defects affect each other , thinner aluminum pinhole more quiet , the more likely the more pinholes belt , belt and more, rolling up speed in the head and tail must have been part of the foil thickness tolerance.
2013年9月17日星期二
Aluminum colored conductive oxidation process
The conductivity of aluminum and aluminum oxidation process , the oxide film obtained is still excellent conductive properties , which is its unique properties, and protective and decorative coating performance is also very good, color matching aluminum surface layer zinc layer iridescent passivation film is more elegant , with a light and uniform color appearance of fine lines , is very promising and worthy craft.
Aluminum and aluminum conducting oxidation process is simple , no special equipment , in recent years, the conductive oxide film easily adsorbed organic coating , good adhesion can be further improved understanding , and thus as a coating ( electrophoresis , painting ) application of the substrate has also been gradually expanded.
Pretreatment process details to note in the aluminum material in the air is very unstable , easily formed with the naked eye is difficult to identify the oxide film. Since aluminum processing different methods, such as casting , or by a direct extension pressure plate cut from , or mechanical fine molding , or by different molding process after heat treatment or welding , the surface will be presented different states , different levels of dirt or traces , for the pretreatment step to the surface of the workpiece on the actual situation of the process for pre-treatment .
( 1 ) Aluminum Alloys and aluminum precision machining parts pretreatment process issues that need attention : precision machining parts although the surface of the natural oxide film Caichu generation, easy to remove , but greasy heavy, especially in and around the hole ( lubrication due to the machining process need to add ) , this kind of work must be approved by an organic solvent cleaning , if the direct use of caustic not only difficult Ex greasy heavy and fine processing of surfaces can not afford a long period of alkali corrosion , the results will be affect the workpiece surface with roughness and tolerances , may eventually become waste.
( 2 ) aluminum alloy and aluminum casting parts in the pretreatment step problems that need attention . Not all pieces of casting surfaces are machined , machined surfaces without leaving formed during casting too thick oxide layer , and some interbedded with sand , then you should use the first method of machining or sandblasting to remove this part of the original oxide film , or by caustic after processing, the only way to both Ex unprocessed parts of the original oxide layer, and avoid machined parts tolerances change.
( 3 ) heat-treated aluminum alloy and aluminum welding workpieces or previous treatment process issues that need attention : pendulum cesium process requirements , the workpiece into the heat treatment or welding processes required by the organic solvent prior to cleaning, in addition to the net surface oil, but it is generally not do this , so the workpiece surface to form a sintered layer of oil coke material , this layer of coke in organic solvents is difficult in addition to the net , if soaked in lye can cause localized corrosion , pitting or cause arising uneven , seriously affecting the quality of products.
Aluminum and aluminum conducting oxidation process is simple , no special equipment , in recent years, the conductive oxide film easily adsorbed organic coating , good adhesion can be further improved understanding , and thus as a coating ( electrophoresis , painting ) application of the substrate has also been gradually expanded.
Pretreatment process details to note in the aluminum material in the air is very unstable , easily formed with the naked eye is difficult to identify the oxide film. Since aluminum processing different methods, such as casting , or by a direct extension pressure plate cut from , or mechanical fine molding , or by different molding process after heat treatment or welding , the surface will be presented different states , different levels of dirt or traces , for the pretreatment step to the surface of the workpiece on the actual situation of the process for pre-treatment .
( 1 ) Aluminum Alloys and aluminum precision machining parts pretreatment process issues that need attention : precision machining parts although the surface of the natural oxide film Caichu generation, easy to remove , but greasy heavy, especially in and around the hole ( lubrication due to the machining process need to add ) , this kind of work must be approved by an organic solvent cleaning , if the direct use of caustic not only difficult Ex greasy heavy and fine processing of surfaces can not afford a long period of alkali corrosion , the results will be affect the workpiece surface with roughness and tolerances , may eventually become waste.
( 2 ) aluminum alloy and aluminum casting parts in the pretreatment step problems that need attention . Not all pieces of casting surfaces are machined , machined surfaces without leaving formed during casting too thick oxide layer , and some interbedded with sand , then you should use the first method of machining or sandblasting to remove this part of the original oxide film , or by caustic after processing, the only way to both Ex unprocessed parts of the original oxide layer, and avoid machined parts tolerances change.
( 3 ) heat-treated aluminum alloy and aluminum welding workpieces or previous treatment process issues that need attention : pendulum cesium process requirements , the workpiece into the heat treatment or welding processes required by the organic solvent prior to cleaning, in addition to the net surface oil, but it is generally not do this , so the workpiece surface to form a sintered layer of oil coke material , this layer of coke in organic solvents is difficult in addition to the net , if soaked in lye can cause localized corrosion , pitting or cause arising uneven , seriously affecting the quality of products.
2013年9月13日星期五
Aluminum windows and doors of the six indicators of material
Progress of the times , many people have begun to focus on quality of life, ease and comfort of home environment has become more concerned about the field , so in recent years , aluminum doors and windows has been favorable for consumers , almost anywhere in life you can see to its presence , today Xiaobian to continue to spread information on the six indicators of material aluminum windows and doors .
1 , Thickness: aluminum sliding doors , 70 series, 90 series are two residential interior aluminum sliding doors with 70 series can be. Series number indicates the thickness of the door frame structure dimensions in millimeters . Aluminum sliding windows , 55 series, 60 series, 70 series , 90 series of four. Series selection should be based on the size and the local wind pressure or windows depending on the value . As a closed veranda aluminum sliding windows should not be less than 70 series.
2 , Strength : Tensile strength should reach 157 Newtons per square millimeter , the yield strength to reach 108 Newtons per square millimeter . When you purchase , you can hand moderately curved profiles, let go after the state should be able to recover .
3 , color : Aluminum Alloys with a color should be the same, such as color obviously , that should not be optional .
4 , flatness : Check the aluminum alloy surface , there should be no dents or bulges .
5 , gloss : aluminum windows and doors opening to avoid bubbles optional surface ( white dots ) and ash ( black spots ) , as well as cracks, burrs , peeling and other obvious defects profiles.
6, the oxidation degree : an oxide film thickness of 10 microns. When you purchase may be scratching the surface of the profile look to see whether the surface of the oxide film can be erased .
1 , Thickness: aluminum sliding doors , 70 series, 90 series are two residential interior aluminum sliding doors with 70 series can be. Series number indicates the thickness of the door frame structure dimensions in millimeters . Aluminum sliding windows , 55 series, 60 series, 70 series , 90 series of four. Series selection should be based on the size and the local wind pressure or windows depending on the value . As a closed veranda aluminum sliding windows should not be less than 70 series.
2 , Strength : Tensile strength should reach 157 Newtons per square millimeter , the yield strength to reach 108 Newtons per square millimeter . When you purchase , you can hand moderately curved profiles, let go after the state should be able to recover .
3 , color : Aluminum Alloys with a color should be the same, such as color obviously , that should not be optional .
4 , flatness : Check the aluminum alloy surface , there should be no dents or bulges .
5 , gloss : aluminum windows and doors opening to avoid bubbles optional surface ( white dots ) and ash ( black spots ) , as well as cracks, burrs , peeling and other obvious defects profiles.
6, the oxidation degree : an oxide film thickness of 10 microns. When you purchase may be scratching the surface of the profile look to see whether the surface of the oxide film can be erased .
2013年9月12日星期四
Heat-treated aluminum profiles online technical parameters
Aluminum Alloys extrusion die to leave through three stages, namely close to quenching, quenching and cooling to ambient temperature after quenching , in order to prevent undesired precipitation of a second phase , is about to enter the cooling device profiles (quenching zone) the temperature must be in the above solvus temperature . The cooling rate of the cooling device and the cooling contact time should be sufficient to obtain the desired components of a supersaturated solid solution , the final properties of the product meets the requirements . Requirements extrusion die to quench zone distance should be as small as possible , ie to try to quench transfer time shorter .
Extrusion line can be quenched alloy has the following features :
( 1 ) having a structural applications in accordance with the tensile strength properties ;
( 2 ) low quench sensitivity , can be a variety of different products using forced air cooling section without using water quenching ;
( 3 ) alloy solid solution between the line and the solidus temperature range, easy to control the outlet temperature of the desired products, the solution temperature range ;
( 4 ) use air cooling material has sufficient toughness ;
( 5 ) extruding the solution temperature at the low deformation resistance , to minimize the deformation energy and synthesis temperature , allowing to obtain a higher extrusion speed
Extrusion line can be quenched alloy has the following features :
( 1 ) having a structural applications in accordance with the tensile strength properties ;
( 2 ) low quench sensitivity , can be a variety of different products using forced air cooling section without using water quenching ;
( 3 ) alloy solid solution between the line and the solidus temperature range, easy to control the outlet temperature of the desired products, the solution temperature range ;
( 4 ) use air cooling material has sufficient toughness ;
( 5 ) extruding the solution temperature at the low deformation resistance , to minimize the deformation energy and synthesis temperature , allowing to obtain a higher extrusion speed
2013年9月11日星期三
Aluminum features, applications and sources
Aluminum is a silvery white light metal , a very wide range of applications , known as the second metal , its production and consumption is second only to iron and steel . Bo is the density of aluminum 2 .7 × 103kg / m3, about steel l / 3. When the cross-sectional area and length are the same, the conductivity of copper aluminum 64 %, if calculated by mass , its conductivity is 200% copper , good thermal conductivity . As can be formed on the surface of a solid layer of thin aluminum oxide film , can prevent further oxidation , therefore , the aluminum in the atmosphere , water and some corrosive medium high corrosion resistance . Aluminum, plastic, easy to withstand pressure processing, can be drawn into filaments or pressed into thin slices ; while being able to make it through the cold and hardened alloy .
Aluminum is characterized by a low density , high specific strength (strength to density ratio ) , but also has good ductility and corrosion resistance. In addition, most of the aluminum alloy can be enhanced to the heat treatment method . According to their composition and production process, aluminum can be divided into deformable aluminum and cast Aluminum Alloys . Which can be wrought aluminum alloy hot rolled , cold rolled , stamping , extrusion , bending, curling and other mechanical processing, so a wider use . Rust-proof aluminum alloy can be divided into (A1-Mn and Al-Mg based alloy ) , hard alloy (Al-Mg-si and Al? Cu-Mg alloy ) , hard aluminum (A1-Zn-Mg-cu alloy ) , wrought aluminum (Al-Mg-si-cu -based alloys) .
Aluminum and aluminum alloys , mainly used in the construction industry , the production of windows and doors , partitions , ceiling, and outdoor decoration ; in the aerospace and defense industry sectors are also widely used aluminum alloys, manufacture of aircraft , ships , guns , etc. ; in power transmission , commonly used high strength steel wire reinforced aluminum cables for overhead lines ; addition , automobile manufacturing, container transport, daily necessities , household appliances , machinery and equipment and other fields have extensive use of aluminum and aluminum alloys .
With the production, consumption increases, the amount of waste aluminum products is also growing , and many are single-use aluminum products , products made to the product from the loss of use value is shorter, and therefore its disposal miscellaneous materials into the source of contamination . Meanwhile, aluminum and aluminum alloy is a kind of high environmental load materials , production requires a lot of power , therefore, how to make the best recycling of scrap materials, both the economic development needs, but also environmental protection requirements.
Miscellaneous scrap material stems from its wide range of applications . Differs in its use led to its composition, properties are quite different to the scrap material recycling and reuse create great difficulties . In order to cost less exhausted recycled aluminum , and to ensure the quality of recycled aluminum can continue to meet a variety of needs , the classification of scrap for recycling is very important. If you do not classify cleaning , screening and blind remelting , recycled product is not working, there may even become garbage again . To this end, the advanced industrial countries have developed a corresponding scrap standards or professional standards. For example, Japan's National Institute of Standards JIS (H119) based on aluminum scrap alloy type , recency , shape, divided into 28 kinds of sources , and the secondary alloy manufacturing processes and quality assessment have corresponding regulations.
Aluminum is characterized by a low density , high specific strength (strength to density ratio ) , but also has good ductility and corrosion resistance. In addition, most of the aluminum alloy can be enhanced to the heat treatment method . According to their composition and production process, aluminum can be divided into deformable aluminum and cast Aluminum Alloys . Which can be wrought aluminum alloy hot rolled , cold rolled , stamping , extrusion , bending, curling and other mechanical processing, so a wider use . Rust-proof aluminum alloy can be divided into (A1-Mn and Al-Mg based alloy ) , hard alloy (Al-Mg-si and Al? Cu-Mg alloy ) , hard aluminum (A1-Zn-Mg-cu alloy ) , wrought aluminum (Al-Mg-si-cu -based alloys) .
Aluminum and aluminum alloys , mainly used in the construction industry , the production of windows and doors , partitions , ceiling, and outdoor decoration ; in the aerospace and defense industry sectors are also widely used aluminum alloys, manufacture of aircraft , ships , guns , etc. ; in power transmission , commonly used high strength steel wire reinforced aluminum cables for overhead lines ; addition , automobile manufacturing, container transport, daily necessities , household appliances , machinery and equipment and other fields have extensive use of aluminum and aluminum alloys .
With the production, consumption increases, the amount of waste aluminum products is also growing , and many are single-use aluminum products , products made to the product from the loss of use value is shorter, and therefore its disposal miscellaneous materials into the source of contamination . Meanwhile, aluminum and aluminum alloy is a kind of high environmental load materials , production requires a lot of power , therefore, how to make the best recycling of scrap materials, both the economic development needs, but also environmental protection requirements.
Miscellaneous scrap material stems from its wide range of applications . Differs in its use led to its composition, properties are quite different to the scrap material recycling and reuse create great difficulties . In order to cost less exhausted recycled aluminum , and to ensure the quality of recycled aluminum can continue to meet a variety of needs , the classification of scrap for recycling is very important. If you do not classify cleaning , screening and blind remelting , recycled product is not working, there may even become garbage again . To this end, the advanced industrial countries have developed a corresponding scrap standards or professional standards. For example, Japan's National Institute of Standards JIS (H119) based on aluminum scrap alloy type , recency , shape, divided into 28 kinds of sources , and the secondary alloy manufacturing processes and quality assessment have corresponding regulations.
Simple test anodic oxide film 5 Ways
The quality of the oxide film can be detected by the following method ;
1 View of colors. Generated surface oxide film is a milky white Aluminum Alloys , cast aluminum , miscellaneous aluminum grayish black . Did not generate the surface oxide film was transparent bright white , some black or gray with pink hanging cream.
2 The measured resistance . Generated when the detection of the oxide film resistor , pressure not conductive. The oxide film is not generated when a detection conductor .
3 scratches the surface of the oxide film has generated very hard, when you draw with a needle slipping, no scratches, the surface of the oxide film is not generated very soft, with a needle and scratch resistance when planning .
4 Listen to the sound of banging oxide film has been generated will be issued when the crisp sound, the oxide film is not generated when issuing muffled beat
5 coloration test. Oxide film has been generated in the dye solution soon be colored oxide film is not generated in the dye solution dyed not color
1 View of colors. Generated surface oxide film is a milky white Aluminum Alloys , cast aluminum , miscellaneous aluminum grayish black . Did not generate the surface oxide film was transparent bright white , some black or gray with pink hanging cream.
2 The measured resistance . Generated when the detection of the oxide film resistor , pressure not conductive. The oxide film is not generated when a detection conductor .
3 scratches the surface of the oxide film has generated very hard, when you draw with a needle slipping, no scratches, the surface of the oxide film is not generated very soft, with a needle and scratch resistance when planning .
4 Listen to the sound of banging oxide film has been generated will be issued when the crisp sound, the oxide film is not generated when issuing muffled beat
5 coloration test. Oxide film has been generated in the dye solution soon be colored oxide film is not generated in the dye solution dyed not color
2013年9月9日星期一
Aluminum temperature setting and control technology
1, aluminum temperature setting and control: usually, warm temperatures with the table there were some errors when setting the table according to the furnace temperature and the actual temperature to be set, and pay close attention to temperature fluctuations.
2, aluminum heat aging: in strict accordance with requirements of the aging process, the holding time should be appropriate to prevent the over-aged and under-aged or cause insufficient hardness. Blank framed, mounted stove
3, aluminum extrusion framed not too close, to have spacing between the material and the material, especially the non-ventilated Aluminum Alloys small material, thick material to be bigger interval more, tubing and small material, sheet combined installed a box, aluminum tubing placed beneath it is a good time-circulating air.
4, aluminum furnace installed to 6xxx alloys and other special furnace installed separately from normal aging 6063, due to production reasons you really want the same heat aging, it is necessary to have access to special alloy subjected to aging process.
Out of aluminum extrusion, without low hardness before aging, not as a finished product to use, so, in general, must be to improve strength after aging. Typically, aging can be divided into two kinds of natural aging and artificial aging, aluminum 6xxx aluminum production now or in the future basically dominated.
2, aluminum heat aging: in strict accordance with requirements of the aging process, the holding time should be appropriate to prevent the over-aged and under-aged or cause insufficient hardness. Blank framed, mounted stove
3, aluminum extrusion framed not too close, to have spacing between the material and the material, especially the non-ventilated Aluminum Alloys small material, thick material to be bigger interval more, tubing and small material, sheet combined installed a box, aluminum tubing placed beneath it is a good time-circulating air.
4, aluminum furnace installed to 6xxx alloys and other special furnace installed separately from normal aging 6063, due to production reasons you really want the same heat aging, it is necessary to have access to special alloy subjected to aging process.
Out of aluminum extrusion, without low hardness before aging, not as a finished product to use, so, in general, must be to improve strength after aging. Typically, aging can be divided into two kinds of natural aging and artificial aging, aluminum 6xxx aluminum production now or in the future basically dominated.
primary aluminum, fabricated aluminum and aluminum alloy production methods
Current industrial production of primary aluminum is the only way Hall - Carvoeiro electrolytic method. Hall by the United States and France Carvoeiro invented in 1886. Hall - Carvoeiro electrolytic method is based on aluminum oxide as raw materials, cryolite (Na3AlF6) for the flux composition of the electrolyte, at 950-970 ℃ under the conditions of the electrolyte through the electrolysis of alumina in the melt decomposition of aluminum and oxygen, carbon cathode, aluminum is precipitated liquid oxygen to the carbon anode in the form of carbon dioxide gas to escape. To produce one ton of primary aluminum, can produce 1.5 tons of carbon dioxide, the consolidated power in 15000kwh so.
Industrial Aluminum Alloys cell can be divided into the side plug anode Soderberg, inserted on the anode and Soderberg anodes slot categories. As Soderberg technology in the electrolysis process high power consumption, and not conducive to the protection of the environment, so Soderberg technology is being phased out. The current global annual production of about 28 million tons of primary aluminum, China's annual output of about 7 million tons of primary aluminum.
When necessary, the resulting aluminum electrolytic refining to obtain high purity aluminum. The current method for producing aluminum alloy melt with mainly based method. Since aluminum and aluminum alloy has excellent workability, so by forging, casting, rolling, punching, pressing and other methods to produce sheet, strip, foil, tubes, wires and other profiles.
Industrial Aluminum Alloys cell can be divided into the side plug anode Soderberg, inserted on the anode and Soderberg anodes slot categories. As Soderberg technology in the electrolysis process high power consumption, and not conducive to the protection of the environment, so Soderberg technology is being phased out. The current global annual production of about 28 million tons of primary aluminum, China's annual output of about 7 million tons of primary aluminum.
When necessary, the resulting aluminum electrolytic refining to obtain high purity aluminum. The current method for producing aluminum alloy melt with mainly based method. Since aluminum and aluminum alloy has excellent workability, so by forging, casting, rolling, punching, pressing and other methods to produce sheet, strip, foil, tubes, wires and other profiles.
2013年9月7日星期六
Ultra-fine aluminum silicate used in the coating of the benefits
Replace part of superfine aluminum Titanium dioxide is widely used in the paint industry at home and abroad technology has obvious economic benefits. Here for you to explain ultrafine aluminum silicate in the coating played some role:
1, to improve the whiteness of paint.
Ultrafine titanium silicate replace part of, not only does not change the titanium dioxide dry hiding power, but also improve the whiteness of paint. If the same amount of titanium dioxide, which will significantly improve the dry hiding power and whiteness large amplitude will increase.
2, the role of a buffer PH value.
PH value range of ultra-fine Aluminum Alloys silicate 9.7-10.8, with PH value buffer. In particular, vinyl acetate latex storage process, to prevent the hydrolysis of vinyl acetate leaving the PH value decreased, thus increasing the dispersion stability of the paint, while avoiding the inner wall of the metal container to corrode.
3, the paint has a good suspension.
Ultra-fine aluminum silicate, the grid structure makes the paint system is slightly thickened, with good suspension, and prevent solids sink to the bottom and surface water separation phenomenon.
4, enhanced paint scrub resistance, weather resistance.
Ultrafine aluminum silicate paint film that has a good scrub resistance, weather resistance, but also shorten dry time.
5, with a matting effect.
Ultra-fine aluminum with matting effect, so the semi-gloss, matt paint may be used as a matting agent economy, should not be used in the light paints.
1, to improve the whiteness of paint.
Ultrafine titanium silicate replace part of, not only does not change the titanium dioxide dry hiding power, but also improve the whiteness of paint. If the same amount of titanium dioxide, which will significantly improve the dry hiding power and whiteness large amplitude will increase.
2, the role of a buffer PH value.
PH value range of ultra-fine Aluminum Alloys silicate 9.7-10.8, with PH value buffer. In particular, vinyl acetate latex storage process, to prevent the hydrolysis of vinyl acetate leaving the PH value decreased, thus increasing the dispersion stability of the paint, while avoiding the inner wall of the metal container to corrode.
3, the paint has a good suspension.
Ultra-fine aluminum silicate, the grid structure makes the paint system is slightly thickened, with good suspension, and prevent solids sink to the bottom and surface water separation phenomenon.
4, enhanced paint scrub resistance, weather resistance.
Ultrafine aluminum silicate paint film that has a good scrub resistance, weather resistance, but also shorten dry time.
5, with a matting effect.
Ultra-fine aluminum with matting effect, so the semi-gloss, matt paint may be used as a matting agent economy, should not be used in the light paints.
How to identify the quality of solar aluminum type
1, identity checks: Solar aluminum and packaging products are marked with the standard code and production license number, etc.;
2, the surface quality: In addition to the solar aluminum surface should be clean, does not allow cracks, peeling, corrosion and bubbles and other defects exist, but also does not allow corrosion spots, electrical burns, dark spots, shedding oxide film defects such as;
3, the oxide film thickness: Solar Aluminum Alloys oxide film is formed by anodic oxidation, a protective and decorative effect, can be used to detect eddy current thickness;
4, the sealing quality: on-site inspection in general by acid leaching, poor sealing will leave visible traces of solar aluminum, traces of heavier Description sealing quality worse;
5, the corrosion resistance: can be alkali drop test, was visually observed until the droplet at corrosion bubbling oxide film is calculated through time, this test easily outdoors in the summer coarse synchronization judgment, in order to ensure the test Accuracy in the laboratory must be carried out under stringent conditions require.
2, the surface quality: In addition to the solar aluminum surface should be clean, does not allow cracks, peeling, corrosion and bubbles and other defects exist, but also does not allow corrosion spots, electrical burns, dark spots, shedding oxide film defects such as;
3, the oxide film thickness: Solar Aluminum Alloys oxide film is formed by anodic oxidation, a protective and decorative effect, can be used to detect eddy current thickness;
4, the sealing quality: on-site inspection in general by acid leaching, poor sealing will leave visible traces of solar aluminum, traces of heavier Description sealing quality worse;
5, the corrosion resistance: can be alkali drop test, was visually observed until the droplet at corrosion bubbling oxide film is calculated through time, this test easily outdoors in the summer coarse synchronization judgment, in order to ensure the test Accuracy in the laboratory must be carried out under stringent conditions require.
2013年9月6日星期五
Aluminum and aluminum alloy electroplating pretreatment process improvement
Aluminum and aluminum alloy metal plating surface , the surface can significantly improve their physical or chemical properties , made of aluminum and aluminum alloy conductor, silver plating on its surface to increase the surface conductivity or electrical contact parts ; as the aluminum easy welding, plating on the surface of copper, nickel or tin ; order to improve its wear resistance , plating thickness on the surface of Ge . In the decorative aspect , in fact, mostly plating Ge .
Aluminum and Aluminum Alloys surface plating , a long time ago and have been trying for the actual production . However, the coating of aluminum and aluminum alloys and between the oxide , aluminum and aluminum and the metal plating layer different thermal expansion coefficients , and the residual coating with pinholes and other factors plating solution , resulting in poor coating adhesion , prolonged use may peel off even in the plating immediately after peeling , in the field of surface treatment of aluminum and aluminum alloy plating process is still in the exploratory stage, has long been no substantive breakthrough , has not formed a complete and mature technology . Coating adhesion is not strong aluminum and aluminum alloy plating quality and product qualification rate is still the industry bottlenecks.
Two traditional aluminum and aluminum plating
Aluminum and aluminum electrolysis in the electrolyte can form a coating, but the coating adhesion is not strong , easy to peel . Therefore, the first aluminum oxide compound in an aqueous solution containing zinc plating then electroplating deposition , this method both for zinc substitution method or a deposition method . But also the first in the surface treatment of aluminum and aluminum alloy obtained by anodic oxidation power thin layer of porous oxide film during plating.
2.1 Conventional aluminum and aluminum alloy electroplating process
Aluminum and aluminum alloy electroplating process have pre-plating treatment, plating , after plating processing three parts. Pre-treatment is related to the merits of the product quality plating of the most critical processes , its main purpose is to remove the aluminum and aluminum alloy surface oils , naturally formed oxide film and other contaminants .
Conventional general process: degreasing - washing - Less eclipse - washing - pickling - washing - Activation - washing - a dip zinc - washing - retired Zinc - washing - Secondary dip zinc - washing - Neutral Nickel - washing - subsequent plating.
There is also replaced the wave anodic oxide film during the subsequent post- dip zinc plating process .
2.2 conventional pre-treatment process deficiencies
1 long process , process more .
2 complex process, a narrow operating range , the process parameters must be strictly controlled .
3 . Process scope is not wide , different grades of aluminum pre-treatment process can not be identical, adjustments must be based on grade aluminum pre-treatment process .
4 In the strict control of pre-treatment process under the premise of electroplating products pass rate is very low, ordinary decorative plating passing rates of 85% to 90% , functional electroplating pass rate of 60% to 70%.
5 The pot life of each process solution is short, the processing cycle is short.
Since conventional pre-treatment of aluminum and aluminum agree more widespread lack , therefore, must be improved .
Three . Improved Universal aluminum and aluminum plating pre-treatment process
Degreasing alkaline etching combo - washing - pickling - washing - go gray - washing - alkali activation - dip zinc - washing - Neutral Nickel - washing - up plating.
Four . Practice summary
New processes for the current actual defects aluminum plating , combined with aluminum to teach their special physical and chemical properties, in the original process improvement on the basis of the specific advantages:
1 short process, through selective dissolution of the surface layer of aluminum and other metals to improve the purity of aluminum alloy surface , coating adhesion is improved .
(2) was first activated with alkaline acidic activation process to completely replace the clearance rate of alloy plating pre-treatment process of surface residual silicon and silicone, effectively improve coating adhesion .
3 alkaline activated zinc dipping directly without washing , to avoid acidic activation after washing and then the second dip zinc exposure in air to form an oxide layer .
4 Just a simple dip zinc can, significantly better than the secondary coating adhesion complex, multi -dip zinc and zinc cyanide leaching process .
5 . Process wide versatility , almost all grades of aluminum used in the plating pre-treatment.
6 products plating time pass rate was significantly higher than the traditional process . If a simple coating adhesion quality assessment, the product qualification rate of close to 100%.
7 actual production process is simple and convenient.
8 automatic production line for a long time scale gantry actual production proved , the improved new aluminum plating pre-treatment is very stable .
9 easy in the traditional aluminum plating process on the basis of process improvement .
10 Using power -ho into aluminum oxide can be achieved quickly improve the film speed, shorten the film on time, save resources, to achieve the effect of cost savings .
Aluminum and Aluminum Alloys surface plating , a long time ago and have been trying for the actual production . However, the coating of aluminum and aluminum alloys and between the oxide , aluminum and aluminum and the metal plating layer different thermal expansion coefficients , and the residual coating with pinholes and other factors plating solution , resulting in poor coating adhesion , prolonged use may peel off even in the plating immediately after peeling , in the field of surface treatment of aluminum and aluminum alloy plating process is still in the exploratory stage, has long been no substantive breakthrough , has not formed a complete and mature technology . Coating adhesion is not strong aluminum and aluminum alloy plating quality and product qualification rate is still the industry bottlenecks.
Two traditional aluminum and aluminum plating
Aluminum and aluminum electrolysis in the electrolyte can form a coating, but the coating adhesion is not strong , easy to peel . Therefore, the first aluminum oxide compound in an aqueous solution containing zinc plating then electroplating deposition , this method both for zinc substitution method or a deposition method . But also the first in the surface treatment of aluminum and aluminum alloy obtained by anodic oxidation power thin layer of porous oxide film during plating.
2.1 Conventional aluminum and aluminum alloy electroplating process
Aluminum and aluminum alloy electroplating process have pre-plating treatment, plating , after plating processing three parts. Pre-treatment is related to the merits of the product quality plating of the most critical processes , its main purpose is to remove the aluminum and aluminum alloy surface oils , naturally formed oxide film and other contaminants .
Conventional general process: degreasing - washing - Less eclipse - washing - pickling - washing - Activation - washing - a dip zinc - washing - retired Zinc - washing - Secondary dip zinc - washing - Neutral Nickel - washing - subsequent plating.
There is also replaced the wave anodic oxide film during the subsequent post- dip zinc plating process .
2.2 conventional pre-treatment process deficiencies
1 long process , process more .
2 complex process, a narrow operating range , the process parameters must be strictly controlled .
3 . Process scope is not wide , different grades of aluminum pre-treatment process can not be identical, adjustments must be based on grade aluminum pre-treatment process .
4 In the strict control of pre-treatment process under the premise of electroplating products pass rate is very low, ordinary decorative plating passing rates of 85% to 90% , functional electroplating pass rate of 60% to 70%.
5 The pot life of each process solution is short, the processing cycle is short.
Since conventional pre-treatment of aluminum and aluminum agree more widespread lack , therefore, must be improved .
Three . Improved Universal aluminum and aluminum plating pre-treatment process
Degreasing alkaline etching combo - washing - pickling - washing - go gray - washing - alkali activation - dip zinc - washing - Neutral Nickel - washing - up plating.
Four . Practice summary
New processes for the current actual defects aluminum plating , combined with aluminum to teach their special physical and chemical properties, in the original process improvement on the basis of the specific advantages:
1 short process, through selective dissolution of the surface layer of aluminum and other metals to improve the purity of aluminum alloy surface , coating adhesion is improved .
(2) was first activated with alkaline acidic activation process to completely replace the clearance rate of alloy plating pre-treatment process of surface residual silicon and silicone, effectively improve coating adhesion .
3 alkaline activated zinc dipping directly without washing , to avoid acidic activation after washing and then the second dip zinc exposure in air to form an oxide layer .
4 Just a simple dip zinc can, significantly better than the secondary coating adhesion complex, multi -dip zinc and zinc cyanide leaching process .
5 . Process wide versatility , almost all grades of aluminum used in the plating pre-treatment.
6 products plating time pass rate was significantly higher than the traditional process . If a simple coating adhesion quality assessment, the product qualification rate of close to 100%.
7 actual production process is simple and convenient.
8 automatic production line for a long time scale gantry actual production proved , the improved new aluminum plating pre-treatment is very stable .
9 easy in the traditional aluminum plating process on the basis of process improvement .
10 Using power -ho into aluminum oxide can be achieved quickly improve the film speed, shorten the film on time, save resources, to achieve the effect of cost savings .
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