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.