Tungsten carbide cold heading die

Product Description

Tungsten carbide cold heading molds are commonly used for cold heading, cold stamping, and forging of metal materials. They withstand high impact forces, have a very high impact frequency, and operate at a certain temperature in harsh environments. This requires cold heading molds to have both good impact toughness and certain wear resistance.

Tungsten carbide Cold heading die is a common type of mold in industrial manufacturing, mainly used for producing various metal parts, especially small diameter screws, nuts, and bolts. In order to meet the needs of high-speed production, cold mold needs to have characteristics such as high hardness, high strength, high wear resistance, and high crack resistance. Tungsten carbide material is an ideal material which can meet the requirements of cold stamping molds. Choosing appropriate mold materials can ensure the quality and service life of the mold, improve the production efficiency and economic benefits of the enterprise.

Features

Tungsten carbide cold heading molds are mainly used for: molding and stamping various metal and non-metal powders, stretching steel bars and pipes with high compression rates, forging, piercing and stamping molds working under high stress, machine parts, mold cores, and making stamping molds, such as stamping watch parts, musical instrument spring plates, etc; Mold for producing battery cases and toothpaste tubes; Stamping molds for small-sized steel balls, screws, nuts, impact resistant forging molds, and cold heading, cold stamping, and cold pressing molds for the production of standard parts, bearings, tools, and other industries; Stamping molds for bullets and shells.

Tungsten carbide cold heading mold is a mold used on a cold heading machine to cut, preform, and shape ingredients into cold formed parts.

Under strong impact force, the impact compressive stress of the punch can reach over 2500MPa, and both the concave die surface and the punch working surface are subjected to severe impact friction, resulting in a surface temperature of up to 300 ℃. Due to the uneven end faces of the billet, the punch will also be subjected to bending stress. The common feature of cold heading molds under impact or strong impact wear-resistant conditions is that hard alloys have good impact toughness, fracture toughness, fatigue strength, bending strength, and good wear resistance. So many fasteners are formed by cold heading molds.

Tungsten carbide Cold heading molds are required to withstand the impact load generated by the heading, requiring the working surface of the mold to have high hardness and wear resistance, and the core to have sufficient strength and toughness. If the hardening layer of the cold heading mold is too hard or too deep, it will cause the mold parts to break; On the contrary, the working surface of mold parts is prone to wear, and rough materials adhere to the mold parts. Usually, the hardness of the punch is 60~62HRC, the mold is 58~60HRC, and the depth of the hardened layer should be controlled within 1.5~4mm. Cold heading molds are subjected to severe stamping loads, and the surface of the mold is subjected to high compressive stress. Require mold materials to have high strength, toughness, and wear resistance.