Plastic mold steel surface treatment method: a key step to improve the life and performance of the mold.
I. Introduction. Plastic mold steel plays a vital role in the manufacturing process of injection molding, die casting, etc. In order to improve the service life and performance of molds, surface treatment has become an indispensable link. This article will introduce several plastic mold steel surface treatment methods in detail to help you optimize the production process, reduce costs, and improve efficiency.
Second, the surface treatment method.
Carburizing and quenching is a commonly used surface treatment method for molds that require high hardness and high wear resistance. Through carburizing treatment, a hardened layer of high hardness is formed on the surface of the mold, which improves wear resistance and corrosion resistance. After quenching treatment, the hardness of the mold can reach more than HRC60, which effectively prolongs the service life of the mold.
Nitriding is a process in which nitrogen atoms penetrate the surface of a mold at a certain temperature. After nitriding, a layer of high-hardness nitride is formed on the surface of the mold, which has excellent wear resistance, corrosion resistance and fatigue resistance. Nitriding is suitable for molds that require high precision and high wear resistance.
Chrome plating is a method of covering the surface of a mold with a layer of metallic chrome. The chromium layer has high hardness and high wear resistance, which can effectively improve the corrosion resistance and wear resistance of the mold. The chrome plating treatment is suitable for injection molds, die-casting molds and other molds that require high wear resistance.
Laser hardening is a method that uses a high-energy laser beam to irradiate the surface of a mold. When the laser beam hits the surface of the mold, the surface material melts and cools down quickly, forming a hardened layer with high hardness. Laser hardening has the advantages of fast processing speed, uniform hardening layer, and high wear resistance. It is suitable for various types of plastic mold steel.
Shot peening is a method that utilizes high-velocity projectiles to be sprayed onto the surface of a mold. The projectile hits the surface of the mold, causing the surface material to undergo cold work hardening, forming a hardened layer with high hardness. Shot peening can effectively improve the fatigue resistance and wear resistance of molds, and is suitable for large plastic molds and die-casting molds.
3. Choose the appropriate surface treatment method.
When choosing a surface treatment method, it should be comprehensively considered according to the specific use requirements, material type and production conditions. For molds that require high hardness and high wear resistance, methods such as carburizing and quenching, nitriding treatment or laser hardening can be selectedFor molds that require high precision and high corrosion resistance, methods such as chrome plating or shot peening can be selected. At the same time, factors such as treatment cost and cycle time should also be considered to determine the most suitable surface treatment solution.
IV. Conclusions. The surface treatment of plastic mold steel is a key step to improve the life and performance of the mold. By choosing the appropriate surface treatment method, the hardness, wear resistance, corrosion resistance and fatigue resistance of the mold can be significantly improved, and the service life of the mold can be prolonged. At the same time, it can also optimize the production process, improve production efficiency and reduce costs. Therefore, when purchasing plastic mold steel, the surface treatment process and performance indicators should be fully considered in order to select the most suitable materials and solutions.