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Mold accessories necessary features


  1, wear resistance
  When the billet plastically degenerates in the cavity of the mold, it flows and slides along the surface of the cavity, causing violent friction between the cavity surface and the blank, resulting in failure of the mold due to wear. Therefore, the wear resistance of the material is one of the most basic and important properties of the mold. The
  Hardness is the main factor affecting wear resistance. Under normal circumstances, the higher the hardness of the mold parts, the smaller the amount of wear and the better the wear resistance. In addition, wear resistance is also related to the type, number, morphology, size, and distribution of carbides in the material. The
  2, toughness
  Most of the working conditions of the mold are very harsh, and some often suffer from a large impact load, resulting in brittle fracture. In order to prevent the mold parts from suddenly breaking during work, the mold must have high strength and toughness. The toughness of a mold depends mainly on the carbon content, grain size, and microstructure of the material. The
  3, fatigue fracture performance
  During the working of the mold, under the long-term effect of cyclic stress, fatigue fracture often occurs. In the form of small energy multiple impact fatigue fracture, tensile fatigue fracture contact fatigue fracture and bending fatigue fracture. The fatigue fracture properties of a mold depend primarily on its strength, toughness, hardness, and inclusion content in the material. The
  4, high temperature performance
  When the working temperature of the mold is higher, the hardness and strength will be reduced, resulting in early wear of the mold or plastic deformation and failure. Therefore, the mold material should have high anti-tempering stability to ensure that the mold has higher hardness and strength at working temperature. The
  5, cold and hot fatigue resistance
  Some molds are in a state of repeated heating and cooling during the working process, which causes the stress on the surface of the cavity to be pulled and the stress changes, causing cracking and flaking of the surface, increasing the frictional force, impeding the plastic deformation, and reducing the dimensional accuracy, thereby resulting in Mold failure. Hot and cold fatigue is one of the main forms of failure of hot work molds, and these types of molds should have high cold-heat fatigue resistance. The
  6, corrosion resistance
  Some molds such as plastic molds work, due to the presence of chlorine in the plastic, fluorine and other elements, after heat analysis of HCI, HF and other aggressive gases, erosion mold cavity surface, increase its surface roughness, increase wear and tear failure.
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Dongguan Xing Ming Plastic Mould Co., Ltd.
Address: Room 5812, 5th Floor, Fuan Building, 228 Anzhong Road, Shatou Community, Chang'an Town, Dongguan City
Phone:0769-33381888
Fax: 0769-28586656
Handset:+86 189 2686 1885
Contact person: Mr. Xu
Dongguan Xing Ming Plastic Mould Co., Ltd.
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