In the machining of stamping stretches, the smaller the tensile coefficient is, the smaller the outer diameter of the strands after stretching, but the tensile coefficient can not be taken too small, depending on the relative thickness. I would like to ask, if the tensile coefficient is too small, what will happen?
1, what is the stretch?
A: The use of presses and the corresponding mold, the sheet made of open hollow pieces of a stamping process.
2, what is the tensile coefficient?
A: The ratio of the cross-sectional area of the material after each stretching to the end area before stretching is called the tensile coefficient. The tensile coefficient actually reflects the degree of deformation of the tensile element.
3, the tensile coefficient is too small, indicating that the material elongation is not good, that is, poor stretch, pull the lighter.
The tensile coefficient is an important indicator of the formability of the sheet. The smaller the tensile coefficient, the better the forming performance of the material. Tensile coefficient is too small, the material thinning is serious, there will be no rupture. This is a material of excellent plastic forming performance of a manifestation, is not a disadvantage.

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