Mould parts manufacturing process of precision stamping die life the influence of the mold production with high efficiency, high material utilization and production of product quality and process adaptability is good wait for a characteristic, is widely used in aerospace, machinery, automobile, electronic appliances, instrumentation and other industries, the quality of the precision stamping die products in China at present and the level of production technology, generally much lower than the international advanced level, and mold production cycle than long.
Cold stamping is at room temperature, the use of punching die in the pressure on the pressure plate or sheet, make its produce plastic deformation or separation, to obtain the required shape and size of the parts of a pressure processing method, using precision mold processing production can ensure the accuracy of the product size, make the product quality is stable, and does not destroy the product surface in the processing.
Especially for mass production of the same type products, there is a big advantage.
Mould manufacturing process should be fully considered parts material and the heat treatment process on the service life of mould.
Shenzhen Xavier precision components co. , LTD. , is committed to hardware stamping die and mold parts processing for 16 years, in the precision mold processing, accumulated a wealth of experience.
The following from the effects of the two aspects of processing technology and heat treatment process, to discuss it.
Processing: the influence of stamping die is composed of multiple components, also called mould parts.
If not completely remove when machining
surface decarburized layer, will reduce the surface hardness of mould, exacerbating the mold grinding crack and quenching crack;
When the feeding of grinding is too large, low cooling is easy grinding burn and grinding cracks, reduce fatigue strength and fracture resistance of mold;
And wire cutting edm forming processing, precision stamping die surface causes tension stress and microcrack, lead to the surface spalling and early cracking.
If the internal stress of material after quenching is high, the edm will stress redistribution, cause mould deformation or cracking.
The influence of heat treatment process: die parts quenching heating temperature is exorbitant, easy cause overheating in the mould, the burnt, impact toughness, lead to the early fracture, if quenching temperature is too low, can reduce mold hardness, wear resistance and fatigue resistance, easy to cause the mould of plastic deformation and wear failure, quench heating don't pay attention to the protection measures, will make the precision stamping mold surface oxidation and decarburization, decarburization will cause the quenching soft point or soft area, lower mould wear resistance, fatigue and anti-seizure ability, affect the service life and quenching cooling too fast or the oil temperature is too low.
If the tempering temperature is too low, and inadequate, will not be able to eliminate the residual stress in the process of quenching to lower mould toughness, prone to early fracture.
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