These measures can effectively prolong the service life of the die
liuweiqiong
liuweiqiong
2017-08-14 13:13:18
When the mold parts (plastic mold company china) produce these defects, it can not form a qualified fastener products, it will affect the production plan of the enterprise. In order to prevent the early failure of the die, and effectively prolong the service life of the die, the main preventive measures are taken from the following aspects.
die material
Because of the cold die under unit extrusion pressure, so we should choose high performance die material with high strength and good toughness and good wear resistance; as the punch working conditions than die more susceptible to eccentric force, therefore, the wear resistance of mould material (mold maker china) should be better than more die material.
heat treatment
The heat treatment of mould includes: cold working die, the timely tempering of embryo material after forging to refine grain, tempering after rough processing to eliminate stress, electric spark, after line cutting off stress, low temperature tempering. Experience shows that the die diameter is less than 80mm, should adopt the bar directly without further machining, forging, forging because of improper but will cause burning, coarse grain, segregation and other defects.
die design, cold mold (plastic news top mold makers) structure must have enough strength, stiffness, reliability and good guidance, but the structure of the mold is irrational, will directly affect the service life of the mold. The die part should be designed for the radius is large enough, to avoid the sharp transition result in stress concentration and ligament width should be designed rationally according to the metal flow, to minimize friction, generally between 1.5-3.5.
mold processing
In touch with the machining process, the following measures should be taken; improve the surface roughness, micro crack grinding traces formed, the transition should be smooth, not machining marks and tiny defects, prevent the use of the process of stress concentration caused cracks.
die material
Because of the cold die under unit extrusion pressure, so we should choose high performance die material with high strength and good toughness and good wear resistance; as the punch working conditions than die more susceptible to eccentric force, therefore, the wear resistance of mould material (mold maker china) should be better than more die material.
heat treatment
The heat treatment of mould includes: cold working die, the timely tempering of embryo material after forging to refine grain, tempering after rough processing to eliminate stress, electric spark, after line cutting off stress, low temperature tempering. Experience shows that the die diameter is less than 80mm, should adopt the bar directly without further machining, forging, forging because of improper but will cause burning, coarse grain, segregation and other defects.
die design, cold mold (plastic news top mold makers) structure must have enough strength, stiffness, reliability and good guidance, but the structure of the mold is irrational, will directly affect the service life of the mold. The die part should be designed for the radius is large enough, to avoid the sharp transition result in stress concentration and ligament width should be designed rationally according to the metal flow, to minimize friction, generally between 1.5-3.5.
mold processing
In touch with the machining process, the following measures should be taken; improve the surface roughness, micro crack grinding traces formed, the transition should be smooth, not machining marks and tiny defects, prevent the use of the process of stress concentration caused cracks.