High-strength aluminum alloy conductors and heat conductors with low resistance compared to conventional ACSR has the following advantages:
(1) in the same unit weight, the aluminum conductor DC resistance, load flow, Rally, singlet tension ratio, etc.;
(2) having the same load flow conditions compared important light aluminum alloy conductor, Rally, singlet tension greater than the advantages. Aluminum alloy wire material for a single wire, easy installation and construction;
(3) low risk-bearing aluminum alloy wire can grade;
(4) Common ACSR life of about 50 years, Aluminum Wire life of 100 to 120 years.
2013年10月28日星期一
How to care for aluminum detection tool
In Aluminum Alloys production, measurement tools for inspectors as their weapons . If the weapon is semi-paralyzed or damage to state that the test results would not make any sense , but there is no supervision of product quality control role . Therefore, measuring the maintenance and care is very important. Here are a few measurement tool maintenance specifications ( for commonly used detection tool ) :
1 Measuring exhausted after , to clean surface stains , aluminum scrap , loosen the fastening device, when the long-term ( one month or more ) when not in the measurement surface to be oiled . Gage when not , to put it in a protective case , it is best to use someone full-time , and do measuring unit testing by the authoritative annual record.
(2) Do not use the caliper jaws as the stylus tip , compasses , or other tools, are not allowed to artificially twist two jaws or to gauge when the card board uses .
3 Do not oil stone , emery cloth and rub the surface of measuring surface and measuring reticle part non- metering maintenance personnel , non- demolition , alteration and unauthorized repairs gauges.
4 Do not touch the gage measuring surface , because the hands have sweat and other dirt can contaminate the measuring surface , making it rust. Measuring do with other tools , and metal substances mixed together so as not to bruise measuring tools.
5 gage storage place should be kept clean , dry, no vibration, no corrosive gas , and to stay away from a large range of temperature change place or places where magnetic fields . Storage box measuring gages to clean and dry, are not allowed to store other debris.
6, when the surface has burrs , must go to the net burr , and then measure , or make measuring wear , and will affect the measurement accuracy of the results .
1 Measuring exhausted after , to clean surface stains , aluminum scrap , loosen the fastening device, when the long-term ( one month or more ) when not in the measurement surface to be oiled . Gage when not , to put it in a protective case , it is best to use someone full-time , and do measuring unit testing by the authoritative annual record.
(2) Do not use the caliper jaws as the stylus tip , compasses , or other tools, are not allowed to artificially twist two jaws or to gauge when the card board uses .
3 Do not oil stone , emery cloth and rub the surface of measuring surface and measuring reticle part non- metering maintenance personnel , non- demolition , alteration and unauthorized repairs gauges.
4 Do not touch the gage measuring surface , because the hands have sweat and other dirt can contaminate the measuring surface , making it rust. Measuring do with other tools , and metal substances mixed together so as not to bruise measuring tools.
5 gage storage place should be kept clean , dry, no vibration, no corrosive gas , and to stay away from a large range of temperature change place or places where magnetic fields . Storage box measuring gages to clean and dry, are not allowed to store other debris.
6, when the surface has burrs , must go to the net burr , and then measure , or make measuring wear , and will affect the measurement accuracy of the results .
2013年10月25日星期五
Aluminum alloy plating process
Aluminum and Aluminum Alloys by the addition of various alloy elements will be present in several different forms in the aluminum alloy . Example: in the form of solid solution into the aluminum character ; in the element itself or in the form of microscopic particles of aluminum or other alloying elements of the intermetallic compound in the form of particles in the aluminum alloy . Therefore, to find a different universal aluminum pretreatment and pre-plating process , the forks with the same satisfactory results are very difficult to teach . In the plating process , we learn from the steel parts repair plating process . Namely:
Cathodic degreasing → ??washing → washing technique anode activation → → washing → → pre- tinned copper
Activation with removal step can produce a thin oxide film thickness of the oxide film on a solid removed by use machine maple .
Aluminum is a reactive metal in the air easily oxidized , coated each step interval should be as short as possible . And kept moist , never dry spots formed . Once the formation of dry spots , it means that the surface re- oxidized, reduced junction platform strength coating the activated surface after washing and order as soon as possible with the remaining complex , preventing in -process workpiece surface is re- oxidation.
Although the plating process according to the above process operation. Of industrial pure aluminum and aluminum- manganese alloy forging is ideal, but the aluminum- magnesium , aluminum- magnesium, silicon , magnesium, aluminum -zinc alloy in the production of still occur due to junction station and force bad batch rework loop resistance elevated . After many trials attack , we improved the activation solution composition used in the activation of dilute hydrochloric acid instead of sulfuric acid , preferably the best value , improved aluminum magnesium alloy for plating a junction station force .
Ancient volume on high silicon cast alloy , fork right amount added HF, although a trace amount added , but the effect is very obvious.
Meanwhile, after Wei -phase detection cartridge tin layer , we believe that the production process caused loop resistance is too high and causes peeling thickness with pre-plating , the current size is closely related to the degree eagle . This also includes the brush plating current density . Mo brush transition with alkaline copper plating solution , plating repeated too thick. Easily cause great stress coating . Causing peeling. Current density is too too , brush plating layer , layer particle technetium big sister , grain and grain together appear crosslinked network structure transition chain ring loose micro display is not dense , and the substrate junction station is weak , it brush or causes blistering hot baking tin after blistering after the invasion when corrosive gases , exacerbating the region corrosion and ultimately lead to increased loop resistance tin layer peeling off.
After several experimented , we use the following brush tin process:
( 1 ) Brush the surface with water sandpaper carefully polished , Chen lost oxide.
( 2 ) cathodic degreasing , 12 ~ 15V5 ~ 15s, to the workpiece surface is not hanging drops, washed clean .
( 3 ) anode activation, do not ask the appropriate material selection activation solution , the voltage l5V around , 8 ~ 12s, to the surface dark gray, washed with alkaline copper plating solution without electricity wipe the surface .
( 4 ) pre- plating copper . Voltage of about 10V , l ~ 2min, washed clean .
( 5 ) Brush tin , 8 ~ 12V, power consumption is calculated by time .
According to the above process operation. Junction station to check the strength , thermal shock test according to GB5270 do . Oven heating the part to a person 150 ± 10. C, time was 2h, after removing the parts into the chilling tank , found that the coating and substrate junction station well, no blistering and peeling of the test loop resistance from the assembly plant type test group testing, electrical connectors T- , L -Block , etc. contact resistance are maintained at l5 ~ 25m '~, breaks the electrical contact elements Taipower performance standards .
Cathodic degreasing → ??washing → washing technique anode activation → → washing → → pre- tinned copper
Activation with removal step can produce a thin oxide film thickness of the oxide film on a solid removed by use machine maple .
Aluminum is a reactive metal in the air easily oxidized , coated each step interval should be as short as possible . And kept moist , never dry spots formed . Once the formation of dry spots , it means that the surface re- oxidized, reduced junction platform strength coating the activated surface after washing and order as soon as possible with the remaining complex , preventing in -process workpiece surface is re- oxidation.
Although the plating process according to the above process operation. Of industrial pure aluminum and aluminum- manganese alloy forging is ideal, but the aluminum- magnesium , aluminum- magnesium, silicon , magnesium, aluminum -zinc alloy in the production of still occur due to junction station and force bad batch rework loop resistance elevated . After many trials attack , we improved the activation solution composition used in the activation of dilute hydrochloric acid instead of sulfuric acid , preferably the best value , improved aluminum magnesium alloy for plating a junction station force .
Ancient volume on high silicon cast alloy , fork right amount added HF, although a trace amount added , but the effect is very obvious.
Meanwhile, after Wei -phase detection cartridge tin layer , we believe that the production process caused loop resistance is too high and causes peeling thickness with pre-plating , the current size is closely related to the degree eagle . This also includes the brush plating current density . Mo brush transition with alkaline copper plating solution , plating repeated too thick. Easily cause great stress coating . Causing peeling. Current density is too too , brush plating layer , layer particle technetium big sister , grain and grain together appear crosslinked network structure transition chain ring loose micro display is not dense , and the substrate junction station is weak , it brush or causes blistering hot baking tin after blistering after the invasion when corrosive gases , exacerbating the region corrosion and ultimately lead to increased loop resistance tin layer peeling off.
After several experimented , we use the following brush tin process:
( 1 ) Brush the surface with water sandpaper carefully polished , Chen lost oxide.
( 2 ) cathodic degreasing , 12 ~ 15V5 ~ 15s, to the workpiece surface is not hanging drops, washed clean .
( 3 ) anode activation, do not ask the appropriate material selection activation solution , the voltage l5V around , 8 ~ 12s, to the surface dark gray, washed with alkaline copper plating solution without electricity wipe the surface .
( 4 ) pre- plating copper . Voltage of about 10V , l ~ 2min, washed clean .
( 5 ) Brush tin , 8 ~ 12V, power consumption is calculated by time .
According to the above process operation. Junction station to check the strength , thermal shock test according to GB5270 do . Oven heating the part to a person 150 ± 10. C, time was 2h, after removing the parts into the chilling tank , found that the coating and substrate junction station well, no blistering and peeling of the test loop resistance from the assembly plant type test group testing, electrical connectors T- , L -Block , etc. contact resistance are maintained at l5 ~ 25m '~, breaks the electrical contact elements Taipower performance standards .
Aluminum screen frame product application
An electronic aluminum frame : suitable for single -sided printed circuit boards, decals, glass, printing and other printing precision require manufacturers to use : semi-automatic screen printing presses operating mainly in the main part of the material is also suitable for manual printing .
2 treadmill printing aluminum frame : suitable treadmill printing, apparel printing , gifts , leather, plastic , glass products and toys printing manufacturers use ; printing jobs mainly for manual -type lines ( running machine ) operations.
3.CD, ceramic Aluminum Alloys frame : suitable for CD player, signs nameplate , Epoxy , keyboard , plastic, shell, etc. require manufacturers to use ordinary printing precision : print jobs to a small area of ??hand printing and printing machines based ; single frame can be customized and curved frames and other special-shaped box.
4 Precision Electronics aluminum frame : suitable for multi-layer circuit boards, LCD , SMT, membrane switch, ceramic decal , tobacco packaging printing manufacturers use high precision requirements : Printing jobs mainly in automatic screen printing machine-based , some are also suitable for precision semi-automatic screen printing presses.
5 large aluminum frame: suitable for large-scale outdoor four -color advertising, light printing, automotive glass, glass curtain wall and other large-format printers used to print large format screen printing work is mainly based.
2 treadmill printing aluminum frame : suitable treadmill printing, apparel printing , gifts , leather, plastic , glass products and toys printing manufacturers use ; printing jobs mainly for manual -type lines ( running machine ) operations.
3.CD, ceramic Aluminum Alloys frame : suitable for CD player, signs nameplate , Epoxy , keyboard , plastic, shell, etc. require manufacturers to use ordinary printing precision : print jobs to a small area of ??hand printing and printing machines based ; single frame can be customized and curved frames and other special-shaped box.
4 Precision Electronics aluminum frame : suitable for multi-layer circuit boards, LCD , SMT, membrane switch, ceramic decal , tobacco packaging printing manufacturers use high precision requirements : Printing jobs mainly in automatic screen printing machine-based , some are also suitable for precision semi-automatic screen printing presses.
5 large aluminum frame: suitable for large-scale outdoor four -color advertising, light printing, automotive glass, glass curtain wall and other large-format printers used to print large format screen printing work is mainly based.
2013年10月23日星期三
Aluminum plant equipment operation and maintenance rules
From the law of that Aluminum Alloys equipment wear, 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. 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.
Device performance level of availability of time is determined by the equipment downtime. 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.
Characteristics and mechanical properties of aluminum alloy 2A14
The composition and properties from the point of view 2A14 it is hard alloy wrought Aluminum Alloys can also fall 2A50, 2A50 it differs in that the copper content is high, so high strength, heat resistance is good, but the hot state under the plastic as well 2A50 alloy has good machinability, electrical resistivity. performance is good spot and seam welding, arc welding and gas welding performance is poor; can be heat strengthened, with squeeze effect; Therefore, vertical transverse performance has differences; corrosion resistance is not high, but in the state of artificial aging tendency to intergranular corrosion and stress corrosion cracking tendencies.
Mechanical properties:
Tensile strength σb (MPa): ≥ 440
Elongation δ5 (%): ≥ 10
Note: The mechanical properties of longitudinal bars at room temperature
Sample Size: bar diameter (square bar, hexagonal bar inscribed circle diameter) ≤ 22
Heat treatment specifications:
A) homogenizing annealing: heating 475 ~ 490 ℃; insulation 12 ~ 14h; furnace cooling.
2) complete annealing: heating 350 ~ 400 ℃; with the effective thickness different, holding time 30 ~ 120min; to 30 ~ 50 ℃ / h speed with furnace cooling to 300 ℃, and then cooled.
3) rapid thermal annealing: heating 350 ~ 460 ℃; holding time 30 ~ 120min; air cooling.
4) quenching and aging: quenching 495 ~ 505 ℃, water; natural aging at room temperature for 96h.
Mechanical properties:
Tensile strength σb (MPa): ≥ 440
Elongation δ5 (%): ≥ 10
Note: The mechanical properties of longitudinal bars at room temperature
Sample Size: bar diameter (square bar, hexagonal bar inscribed circle diameter) ≤ 22
Heat treatment specifications:
A) homogenizing annealing: heating 475 ~ 490 ℃; insulation 12 ~ 14h; furnace cooling.
2) complete annealing: heating 350 ~ 400 ℃; with the effective thickness different, holding time 30 ~ 120min; to 30 ~ 50 ℃ / h speed with furnace cooling to 300 ℃, and then cooled.
3) rapid thermal annealing: heating 350 ~ 460 ℃; holding time 30 ~ 120min; air cooling.
4) quenching and aging: quenching 495 ~ 505 ℃, water; natural aging at room temperature for 96h.
2013年10月16日星期三
Select aluminum skid plate method
A look at the use of materials, quality of aluminum used in aluminum skid plate, thickness, strength and oxidation film, should conform to the relevant standards, the wall thickness should be 1.2 mm or more, tensile strength of 157 Newtons per square millimeter , yield strength to 108 Newton per square millimeter, the oxide film thickness of 10 microns. If you can not reach the above criteria, is inferior aluminum windows and doors, can not be used.
Second look processing, high-quality aluminum alloy skid plate, fine processing, mounting stress, good sealing performance, switch freely. Poor quality aluminum windows and doors, aluminum blind selection series and specifications, processing shoddy, to replace the sawing and milling machining is not required for installation, sealing performance is poor, the switch does not freely, not only leaks and the emergence of glass burst leakage phenomenon, and the case to strong winds and external, easy to pull off some or glass blowing or touching down, destroy property wounding.
Third, look at the price, under normal circumstances, high-quality aluminum alloy skid plate due to high production costs, cheaper than inferior aluminum skid plate to be about 30% higher. Currently self-employed processing aluminum skid plate more, they do not know the structural characteristics of Aluminum Alloys skid plate and its properties. In order to reduce the cost of cutting corners, shoddy products hidden larger, generally should not be used. The best selection of regular aluminum skid plate manufacturer of the product.
Second look processing, high-quality aluminum alloy skid plate, fine processing, mounting stress, good sealing performance, switch freely. Poor quality aluminum windows and doors, aluminum blind selection series and specifications, processing shoddy, to replace the sawing and milling machining is not required for installation, sealing performance is poor, the switch does not freely, not only leaks and the emergence of glass burst leakage phenomenon, and the case to strong winds and external, easy to pull off some or glass blowing or touching down, destroy property wounding.
Third, look at the price, under normal circumstances, high-quality aluminum alloy skid plate due to high production costs, cheaper than inferior aluminum skid plate to be about 30% higher. Currently self-employed processing aluminum skid plate more, they do not know the structural characteristics of Aluminum Alloys skid plate and its properties. In order to reduce the cost of cutting corners, shoddy products hidden larger, generally should not be used. The best selection of regular aluminum skid plate manufacturer of the product.
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