Plastic Mold Steel

Plastic mold steel is a kind of mold steel used for plastic production

Plastic mold steel can generally be divided into:

Age-hardening plastic mold steel (including mirror mold steel), corrosion-resistant plastic mold steel, carburized plastic mold steel, pre-hardened embedded mold steel (including free-cutting steel), quenched and tempered plastic mold steel and hardened Type plastic mold steel six categories. The most widely used are age-hardening plastic mold steel, carburized plastic mold steel and pre-hardened plastic mold steel.

A large number of plastic products need to be molded in the production process, which has greatly promoted the development of the mold industry. Mold material is the key factor affecting the quality, performance and service life of the mold, and it is also a very important part of the development of the mold industry. Plastic mold materials are still dominated by mold steel, and the development of mold steel has promoted the development of industrial products in the direction of advanced, diversified, personalized, and high added value.

Mainly used:

1. Develop materials that are easy to process and have good polishing properties

With the production of precision parts such as optical discs, magnetic disks, and prisms, the requirements for easy-to-process mirror steels have increased. This kind of steel contains less non-metallic impurities, fine and uniform metallographic structure, and no fiber directionality. It is the main development direction of plastic mold steel.

2. Corrosion-resistant steel

Molds are prone to rust and corrosion during long-term operation and maintenance, and with the addition of various ingredients in plastic molding, molds are more likely to be corroded. Therefore, it is required to improve the corrosion resistance of the base metal body, and some corrosion-resistant stainless steel materials have been developed.

3. Maraging alloy steel

This kind of steel has sufficient mechanical properties and outstanding process properties, especially high strength, toughness, wear resistance, and low thermal expansion coefficient. It is a good steel for making injection molds, but it is expensive.

4. Carbide

It is mainly used to make molds with high life expectancy and large batch production of parts