What precautions should be taken during the stretching process of aluminum alloy for wall panels?

1、 Stretching must be carried out by cooling the aluminum alloy profile of the wall panel to below 50 degrees before it can be moved to the stretching frame for stretching operations. If the temperature is too high, stretching will not only burn the human body and wool, but also cause bending, twisting, and poor functionality before and after aging due to the inability to completely solve the internal stress of the aluminum alloy profile.

2、 The stretching amount is controlled at 1%, and it should be noted that too high stretching amount will result in head, middle and tail scale deviation, water ripple Fried Dough Twists marks on the surface, low elongation, high hardness and brittleness. A too low stretching amount will lower the compressive strength and hardness of the profile, resulting in the inability to improve hardness during aging, and aluminum profiles are also prone to arc-shaped twists and turns.

3、 To control the stretching deformation and the scale change of the entire profile very well, it is necessary to choose suitable specialized clamping pads and appropriate methods. Especially for open end materials, arc materials, cantilever materials, and curved shaped profiles, it is important to pay attention to the reasonable and effective use of stretching clamps.

4、 Pay attention to the stress conditions of small feet, thin teeth, long legs, curved surfaces, inclined surfaces, openings, viewpoints, etc. of profiles with high aspect ratios, long overhanging walls, large arcs, large wall thicknesses, and strange shapes, to avoid partial or point scale deformation, twisting, and spiraling of profiles.

5、 Due to the heat blocking effect of wool strips, aluminum profiles with high decorative exterior requirements for wall panels must be flipped up, down, back, and forth more to facilitate uniform heat dissipation and reduce the transverse bright spots caused by uneven heat dissipation and uneven crystallinity. Especially for aluminum profiles with large wide surfaces and thick walls, attention should be paid.

6、 During the process of material retrieval, movement, and stretching, it is not allowed to collide, pull, stack, congest, or entangle with each other, and a certain distance should be reserved between them. For aluminum alloy wall panels that are prone to twists and turns and have long or short discharge lengths, they should be disposed of in a timely manner, and if necessary, they should be maintained and disposed of properly.