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Whatarethecommonmethodstopreventstretchfilmrupture

点击次数:  更新时间:20/03/19 15:25:03 来源:www.lyjiesheng.com关闭
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  In the process of using stretched film, one of the more common problems is damage. So, is there any way to prevent this phenomenon from occurring?
  1) Increase the non-stamping process to improve the plasticity of the stretched film material. The deformation of the stretched part is large, and the deformation amount of each part is also inconsistent. It gradually increases from the bottom along the cylinder wall. It gradually increases from the bottom to the top, and the deformation and hardening at the mouth of the workpiece is more serious. For workpieces that are repeatedly stretched, intermediate annealing is often used to recrystallize the material, eliminate deformation and hardening, improve plasticity during recovery, and improve the tensile The quality also reduces the number of stretches.
  2) Adopt blank holding device and appropriate blank holding force, and use blank holding system to make the part of the blank flange have a proper axial compression force, so as to improve the ability of the stretch film material to resist tangential bending deformation.
  3) Choose a reasonable degree of deformation. The plasticity can be greater. The cylindrical parts with high height can be stretched multiple times, otherwise wrinkles and cracks will occur due to the excessive deformation of the flange part. .
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