Wholsale tungsten carbide mold parts

Wholsale tungsten carbide mold parts

tungsten carbide mold parts

Tungsten carbide mold parts refers to the direct contact with the tungsten carbide mold parts products, mould parts, such as the cavity, core, slide, insert, sloping roof, side pumping. tungsten carbide mold parts

 of the material is directly related to the quality of life, die, determines the tungsten carbide mold parts products, appearance and inherent quality, must be very careful, the general should be based on the provisions of the contract and customer requirements, selected according to the requirements and characteristics of products and molds. Selection principle of.3 forming parts material is: according to the forming of plastic type, the shape of products, size precision, the appearance quality of the products and the use requirement, production batch size, the material cutting, polishing, welding, etch, deformation, wear and so on various performance, considering the condition of manufacturing economy and mold and method of processing, to choose different types of steel. .4 for forming transparent plastic mold, high-grade steel imports the cavity and core are required to use high mirror polishing performance, such as 718 (P20+Ni), NAK80 (P21), S136 (420), H13 steel, 718, NAK80 as the pre hardened state, does not need to be heat treatment; S136 and H13 steel was annealed condition, hardness is generally HB160-200, roughing after vacuum quenching and tempering treatment, the hardness of S136 is HRC40-50, the H13 class steel hardness is generally HRC45-55 (depending on the grade determination). .5 for the appearance of product quality requirements, die longevity, mass production, the forming parts material selection are as follows: a) high-grade imported steel cavity needs to select high mirror polishing performance, such as 718 (P20+Ni), NAK80 (P21) and so on, are pre hardened state, does not need to be hot processing. B) core can be used in cheap imported P20 or P20+Ni steel, such as 618, 738, 2738, 638, 318 and so on, are pre hardened state; mold production batch big, also can choose the domestic plastic mold steel or S50C, S55C and other imported high quality carbon steel.