These measures can effectively extend the service life of the mold

When the mold parts (plastic mold Company China) produce these defects, can not form qualified fastener products, which will affect the production plan of the enterprise. In order to prevent early failure of the mold and effectively extend the service life of the mold, it is mainly considered from the following aspects.

Mold material

Because the cold mold is under the unit extrusion pressure, the high-performance mold material with high strength, good toughness and good wear resistance should be selected. Because the working conditions of the punch are more susceptible to eccentric force than the mold, the wear resistance of the mold material (mold manufacturer China) should be better than more mold materials.

Heat treatment

The heat treatment of the mold includes: cold mold, timely tempering of the blank after forging, tempering treatment after finishing, stress relief, electric spark, wire cutting stress, low temperature tempering. Experience shows that the diameter of the mold is less than 80mm, and the steel bar should be directly used, without further processing, forging, improper forging, but it will cause combustion, coarse grain, segregation and other defects.

Mold design, cold mold (plastic news top mold manufacturer) structure must have enough strength, stiffness, reliability and good guidance, but the structure of the mold is unreasonable, will directly affect the service life of the mold. The mold part should be designed with a radius large enough to avoid stress concentration caused by sharp changes, and the ligament width should be reasonably designed according to the metal flow to minimize friction, generally between 1.5-3.5.

Mold processing

In contact with the processing process, the following measures should be taken: improve the surface roughness, form micro-crack grinding marks, the transition should be smooth, no processing marks and small defects, and prevent stress concentration caused by cracks during use.