Parts in the process of stamping parts production, surface roughening is one of the more common quality defects, the manufacturers are widespread the problem, this problem affect the stability and efficiency of products, also can make the mould more serious wear and tear, may lead to a batch of scrapped parts, die life shortened and the affected parts precision, at the same time, spend more energy to repair mold human and management cost, so don't see a small problem, caused by chain problem is not small, it should be how to deal with, usually small author and your popularity: stamping surface hair come about?
Is essentially due to the mould and parts in the local conglutination, there are many methods to improve this problem, but its basic principle is to improve the properties between the mould and parts, make both does not produce adhesion, could also benefit from these points to start: 1.
Choose the right mold materials: mold material generally choose Cr12MoV, SKD11 high quality materials, such as its hardness can reach 58 - after heat treatment
Prepared to die blank before making mould: guarantee the smooth finish of die blank, because mould billet itself exists porosity, impurities, parts also can produce hair phenomenon, die blank for grinding, ensure finish;
In addition also need to make mould maintenance regularly, can ensure the accuracy of the mold and life;
The rational use of lubricating oil, the production process, the rational use of lubricating oil, can effectively reduce the mould and parts dry friction, reduce hair;
Generally USES is hand painted oil, or the automatic oil, at the same time, also can effectively reduce the parts problem such as craze;
Bad place is, the use of lubricating oil can make the work surface or ground produce oil, the need to clean up after operation;
Mould surface treatment: here are speaking of mold surface treatment for mould surface hard chromium plating, can guarantee the smooth, hard chromium plating surface hardness can reach HV1000 or so at the same time, can effectively reduce hair phenomenon, but after the strong pressure shock or parts fall off, is not conducive to production;
Above is small the author about stamping parts of the surface hair how to deal with the analysis of the for your reference.
The above article is derived from the metal stamping parts, automotive stamping parts processing custom 18 years of enterprise original, reproduced please indicate the source.
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