Problems to be aware of when selecting mold materials for custom plastic molding in China
Principle of selecting mold material is based on processing batch, mold manufacturing process, and processing object in moulding die design. For ordinary molds that are easy to deform and break, high-strength and high-toughness carbon tool steel should be selected. For punching molds with easy edge wear, material with high hardness, wear resistance, good processing performance, small deformation and high hardenability during heat treatment quenching should be used. Main failure mode of stamping die is surface peeling caused by surface fatigue crack, steel with good surface toughness is used; material with particularly low friction coefficient is suitable for drawing die; hot forging die requires material with strong toughness, strength, wear resistance to cold and heat fatigue, alloy tool steel is more suitable; for die-casting molds subjected to cyclic thermal stress, hot work die steel with high heat fatigue, high temperature environment should be selected; plastic mold should use materials that are easy to cut, have a dense structure and a good surface finish; when designing punch and die, matching of molds with different hardness or different materials should be considered to prolong their respective life. In addition, selected mold material should have a weak affinity with finished part to prevent part from sticking to mold, wear parts of mold, and shorten service life of mold.
Problems that need to be solved in mold manufacturing process of plastic parts
Mold manufacturing process refers to molding process, heat treatment specifications and surface treatment technology. In order to ensure life of mold, mold manufacturing process should also be mentioned as a very important position, and factors affecting its service life are mainly processing method and precision for mold manufacturers in china.
(source:https://www.hthc-tech.com/analysis-of-methods-to-improve-service-life-of-molds-2/）
Suzhou HuiTong HuiChuang Technology 