Aluminum crack causes and solutions

Cracks in the aluminum alloys extrusion profiles by tensile stress levels in the surface of different metal lateral tearing. The main cause of this phenomenon, the analysis, mainly the following:

First, because the friction causes the metal surface being attached to the role of tensile stress, when attached to a metal surface is greater than the tensile strength tensile stress is generated when the crack;

Second, the extrusion temperature is too high, the metal surface tensile strength decline in the cracks under the action of friction;

Third, the extrusion speed is too fast, the metal surface with tensile stress suffered cracks increase the profile.

The method can solve this reason, only the strict control of the extrusion process parameters to ensure reasonable exit speed and outlet temperatures, in order to reduce the phenomenon of aluminum crack. This requires the company's strict checks and supervision of production processes.