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The introduction of stamping materials used

by:Fortuna     2021-02-15
(1) accurate, uniform thickness. Stamping mould precision, small gap, sheet thickness will increase the deforming force, and material, even will die burst; Sheet metal would affect the quality of the finished product is too thin, and even cracking during deep drawing. (2) the surface is bright and clean, no spots, no scar, no scratch, no surface crack, etc. All surface defects will remain in the finished surface, crack defects in bending, deep drawing, forming and other processes may expand to the widespread, cause waste. (3) yield strength even and no obvious directivity. The anisotropy ( See the plastic deformation of sheet metal deep drawing, flanging, bulging and stamping process, because there are successively to succumb, plastic deformation, will cause uneven deformation, forming inaccuracies caused by defective goods or scrap. (4) high uniform elongation. Tensile test, the sample neck phenomenon began to appear in front of the elongation is called uniform elongation. In deep drawing, any region of the sheet metal deformation can not be extended more than material evenly, can appear otherwise uneven deformation. (5) QuQiang than low. The ratio of the material yield limit and ultimate strength are called showed. Low showed not only can reduce deformation resistance, can also reduce wrinkling tendency when deep drawing, reduce the amount of springback after bending, improve the precision of bending parts. 6 work hardening sex is low. After the cold deformation of work hardening can increase the deformation resistance of materials, make it difficult to continue to deformation, so the general plate with low hardening exponent. But high hardening exponent of the plastic deformation stability of the material ( The plastic deformation is uniform) Local cracking, it is not easy. In the actual production, commonly used to approximate the manufacturability of stamping process test, such as deep drawing performance test, bulging performance test and other test materials stamping performance, to ensure the quality of the finished product and high qualified rate. A: the basic overview of the stamping die
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