Some die in the course of their work status of repeated heating and cooling of Liaoning road calculus mold manufacturers, so that the cavity surface tension, the pressure becomes stress, causing surface cracking and spalling, increasing friction, hinder plastic deformation, reducing the dimensional accuracy, resulting in failure of the mold. Therefore, the mold material to have resistance to thermal fatigue performance. When the mold into a higher operating temperature, hardness and strength will decline, leading to early galling or plastic deformation and failure. Thus, the mold material should have high resistance to tempering stability, to ensure the mold at the operating temperature, high hardness and strength. To prevent mold parts at work suddenly brittle fracture Liaoning road calculus mold manufacturers, mold to have a high strength and toughness. Mold toughness depends mainly on the carbon content of the material, grain size and organization status. Curb mold and curb road calculus mold and mold is the same product, just different name for Liaoning road calculus mold manufacturers, road calculus mold, Curb mold, mold curbs are actually the same type of product. There is no essential difference, but people's habits is called differently. Curb mold using engineering polypropylene, Acronym pp raw materials, materials with good machinability, malleability, hardenability, hardened and can grind, but also a tendency to crack deformation hardening and decarburization sensitive. High-speed road calculus mold _ _ Liaoning Cheng Cheng road calculus mold fiberglass mold provided by the Qingyuan County wangzhuang Cheng Cheng mold factory. Qingyuan County Wangzhuang Cheng Cheng mold factory (www.bdchengcheng.com) strong, credible, in Baoding plastic building materials industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chengcheng mold into the brilliant and you work for a better future!