The cracks of aluminum profiles are caused by different degrees of transverse tears on the surface caused by tensile stress. After analysis, the main reasons for this phenomenon are as follows:
Firstly, due to friction, the metal surface is affected by additional tensile stress. When the additional tensile stress is greater than the tensile strength of the metal surface, cracks will occur.
Secondly, when the extrusion temperature is too high, the tensile strength of the metal surface decreases and cracks are produced under the action of friction.
Third, when the extrusion speed is too fast, the metal surface cracks by adding tensile stress.
In order to solve this problem, the crack can be reduced only by strictly controlling the extrusion process parameters and ensuring the reasonable exit speed and temperature. This requires the company to strictly inspect and supervise the production process.
The above is the cause of aluminum alloy cracks introduced by aluminum plate manufacturers. For more information, please visit