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What are the factors that affect the service life of injection mold?

發(fā)布時(shí)間:2017-07-03

No matter is any object has certain service life, the injection mold is no exception, after the use of injection mold to a certain extent will fail to produce the new mold mold, mold life was affected by many factors, only truly understand the factors of the injection mold factory to produce an antidote against the disease die life more durable.

The first factor affecting the life of injection mold is corrosion failure. Injection molding alloy common injection mold factory has Aluminum Alloy, zinc alloy, magnesium alloy and copper alloy, with pure aluminum injection, Zn, Al, Mg is a lively metal elements, which has good affinity with the mold material, especially Al easy to bite. When the mold hardness is higher, the corrosion resistance is better, and if the molding surface has soft point, it is unfavorable to corrosion resistance.

Affect the life of injection mold second causes thermal fatigue crack damage failure, injection molding, mold under repeated thermal shock effect, forming surface and its internal deformation, mutual and repeated cycles of thermal stress, structure led to two damage and loss of ductility, cause micro cracks appear, and continue to once the crack expansion, expansion, and the molten metal into, and repeated mechanical stress to accelerate the expansion of crack. For this reason, on the one hand, the injection mold starts

It must be fully preheated. In addition, in the injection molding process, the mold must remain in a certain range of operating temperature, so as not to appear early crack failure. At the same time, to ensure that the mold before production and manufacturing in the internal cause no problems. The majority of die failures in actual production are thermal fatigue cracking failure.

Effect of fragmentation of life of injection mold third reasons for failure in the injection force, will die in the weakest parts crack, especially the mold forming on the surface of the line trace or electric machining trace is not polished or forming Qing corner all can first appeared fine crack, when the grain boundary exists brittle phase or coarse grains, which is easy to be broken. In brittle fracture, the crack propagation is very fast, which is a dangerous factor for the fracture failure of the die. Therefore, on the one hand, all die surface scratch, EDM marks shall be polished, even if it is in the pouring system part, must also be polishing. In addition, the mold material required for high strength, good plasticity, impact toughness and fracture toughness are good.

Shenzhen City Tengfei and plastic products Co., Ltd. was founded in 2008, is located in Shenzhen City, Baoan District Xixiang Shu Donghua third industrial zone, professional mold design and manufacturing, injection molding processing, automatic spraying, vacuum plating, and all kinds of screen printing, UV printing, printing, color printing, water transfer printing, laser engraving, bronzing in one of the industrial company. Tel: 0755-2908-2001 mail box: 540775041@qq.com website: www.ac97.com.cn

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