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Aluminum alloy stretching process matters
- 2017-08-26 09:07 -
Aluminum alloy according to the needs of different purposes, the need for aluminum alloy tensile treatment to produce a variety of aluminum, in order to improve the performance of tensile aluminum, we should pay attention to the following matters:

1, stretching the aluminum plate must be cooled to 50 degrees below the aluminum alloy can be moved to the stretching frame for stretching operations, the temperature is too high that stretch the body will burn, burn the top, but also can not be completely eliminated Aluminum alloy internal stress and before and after the aging showed tortuous, twisted, poor and other absolute waste.
2, the amount of tension in the control of 1%, but also pay attention to the amount of excessive tensile head will occur in the tail scale error, the appearance of water-like twist (fish scales) marks, low elongation, high hardness crisp (plastic low). Too low tensile strength will make the profile of the compressive strength and hardness is low, and even aging (quenching) can not improve the hardness, profiles easy arc-shaped twists and turns (commonly known as knives).
3, in order to control the amount of tensile deformation and very good control of the entire profile of the scale changes, to use the appropriate special pad and the appropriate way. Especially the open material, round material, cantilever material, and the shape of the shape of the tiles should pay attention to the reasonable use of the mat.
4, pay attention to the generous than the high, hanging wall long, large curvature, wall thickness large and small, the shape of strange and other profiles of small feet, thin teeth, long legs, circular surface, inclined surface, opening, Condition, to avoid part of the profile or point-like scale deformation, twisting, spiral and other shortcomings.
5, due to the impact of heat generated by the top, decorative appearance of high demand aluminum must be more than up and down before and after the flip, to facilitate the heat evenly, to reduce the uneven dissipation of heat dissipation and then the occurrence of transverse bright spot defects, especially large width Surface, wall thick aluminum extrusion should pay more attention.
6, in the reclaiming and moving and stretching process shall not touch each other, pull, stack, congestion, winding together, should be reserved for each other between the interval. Easy to twists and turns, the length of the aluminum material to be timely disposal, if necessary, to maintain the maintenance of each other.