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Notes for precision metal stamping parts and drawing parts deep processing

Precision metal stamping parts, stretching parts are widely used in life, but the processing performance is relatively poor, the workpiece surface is easy to scratch.The mould is easy to appear the adhesive lump, causes the workpiece quality and the processing efficiency to be affected greatly.In order to improve the workpiece quality and die life, the die structure, die material, heat treatment and lubrication should be improved.

Problems needing attention in deep processing of precision metal stamping parts and drawing parts:

Raw material stainless steel procurement to meet the international standard raw materials, stamping processing must be tempered.

Die structure and stamping speed is to improve the difficulty of drawing, so it is better to make the blanking surface of the blanking ring oblique, drawing blank under the action of the blanking ring and the blanking surface of the concave die in full contact, can make the concave die rounded corner materials to bear a relatively large blanking force.

In the process of precision metal stamping and drawing, the adhesive mold is serious, which leads to the serious loss of the mold and causes the appearance of the stamping parts to be bad.Anti - viscosity materials: copper - based alloy class, 3054 alloy cast iron and other materials.

In the stamping drawing part should be appropriate to use lubricating oil, can reduce the friction coefficient between the material and the mold, so as to reduce the drawing force;Generally the material is coated with oil, and then put into the die stamping drawing.If the surface quality requirements are not high cylindrical deep drawing parts, processing punch can not use lubricating oil;It is beneficial to reduce the drawing coefficient.

In the drawing process, in order to prevent the crack and crack of precision metal stamping drawing parts, we must reasonably arrange the technological process, choose reasonable drawing coefficient, and conduct reasonable intermediate annealing.In general, the first drawing coefficient of precision stamping parts can be chosen to be close to the lower limit.