Understand the cause of the stainless steel stamping wrinkling and solutions
1, the factors influencing the stainless steel stamping wrinkling and solution (
The tensile depth stainless steel stamping material flow resistance along the concave die in tensile depth has a direct relationship.
, outside the concave and convex curve position, stainless steel stamping tensile depth is too large can cause the uneven distribution of deformation resistance, wrinkle formation, should avoid as far as possible.
Adjust the size of the blank holder force when wrinkles around the parts even produce, should determine the force that press a material shortage, increase the force that press a material can gradually get rid of wrinkles.
When and hemispherical stainless steel stampings stretching taper, stretch at the beginning of most of the material in a suspended state.
Easy generation side wall wrinkling, so in addition to increase the blank-holder force, also should be adopted to increase pick up common clubmoss radial tensile stress to increase the plate and get rid of wrinkles.
Die fillet radius of the influence of stainless steel stamping mold die fillet radius is too large, blank to flow through the die fillet in the concave die is to produce the smaller the bending deformation of bending resistance.
The smaller the bending resistance, the more likely to cause the occurrence of wrinkling.
Small die radius bending deformation of bending resistance is larger, the more not easy corrugate, but easy to produce stainless steel stamping cracking and galling phenomenon.
Stainless steel is proved by a lot of production practice experience accumulated and stamping parts of the main causes of wrinkling, for the accumulation of material in the drawing process and local material movement speed too fast.
When making practical solutions, from the above into consideration mold of the corresponding adjustment mechanism, will obtain good effect.
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