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What to do if stainless steel stretching parts crack
Date:2024-04-17 10:18:53 Visits:

Cracking of stainless steel stretching parts is a common problem, usually caused by multiple factors. Here are some methods to solve the cracking problem of stainless steel tensile parts:

Check material quality: Firstly, ensure that the stainless steel material used is of good quality and free from defects such as holes, bubbles, and inclusions. These defects may lead to a decrease in strength and are prone to tensile fracture. Therefore, when selecting stainless steel materials, high-quality and defect free materials should be selected, and material quality testing should be conducted before stretching.

Control stretching process: During the stretching process, the stretching speed, number of times, and temperature should be well controlled. Appropriate stretching speed can ensure a uniform distribution of material temperature and stress, avoiding cracking caused by stress concentration. At the same time, it is necessary to control the number of stretches according to the characteristics and requirements of the material, to avoid cracking caused by excessive stretching. In addition, pay attention to controlling the stretching temperature to avoid excessive temperature that may cause the grains to stick together and cause cracking.

Optimize mold design: Scratches on the surface of stainless steel deep drawn parts may be caused by relative movement between the workpiece and the mold surface, resulting in friction and scratches. Therefore, the design of the mold should minimize the friction between the workpiece and the mold as much as possible. Lubricants such as polytetrafluoroethylene film can be used to form a layer of film with a certain toughness and elongation, which is conducive to the deep drawing forming of stainless steel plates and prevents cracking.

Surface treatment of materials: For defects on the surface of stainless steel materials, such as scratches, cutting surfaces, etc., their effects can be eliminated or reduced through appropriate surface treatment. For example, smooth edge processing can be used to remove microcracks to reduce the risk of cracking.

Attention to subsequent treatment: After stainless steel pickling, it must be rinsed and dried with clean water to avoid secondary pollution. Meanwhile, for stainless steel plates that undergo high-temperature oxidation and discoloration after being washed with composite white water, specific cleaning agents can be used to restore their original color.

In summary, solving the problem of cracking in stainless steel stretching parts requires comprehensive consideration from multiple aspects such as material selection, stretching process, mold design, material surface treatment, and subsequent treatment. If the problem persists, it is recommended to seek professional technical support in order to more effectively solve the cracking problem.


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