The role of die casting release agent

2022-01-22   Pageview:105

Mold release agent is an interface coating used on the surface of two objects that are easily adhered to each other, which makes the surface of the object easy to detach, smooth and clean. Metal die-casting release agent is mainly used in various die-casting operations for aluminum alloy, magnesium alloy, zinc alloy and other metal materials. In die casting, sometimes other fillers will leach out onto the interface, and then a surface release agent is needed to get rid of it.

Theoretically, a metal die casting release agent should have a high tensile strength so that it is not easily abraded when in regular contact with the molding resin. This is especially true when the resin has abrasive mineral fillers or glass fiber reinforcements. The metal die casting release agent should have chemical resistance so that it is not dissolved when in contact with the chemical composition of different resins (especially styrene and amines). The metal die casting release agent should also have heat and stress resistance, not easy to decompose or wear. Metal die casting release agent should be bonded to the mold and not transferred to the processed parts, so as not to interfere with painting or other secondary processing operations.

In die-casting production, in order to improve the service life of the mold, and make die castings smoothly out of the mold, to ensure that the surface of die castings smooth, complete and clear outline, the need to use the release agent.

Followings are the role of  die casting release agent

1, Good lubricating performance in high temperature condition.

2, It plays a cooling effect on the mold and regulates the temperature of the mold to achieve relative stability, which is conducive to improving the quality of the casting and production efficiency.

3, Avoid the direct impact of metal liquid on the mold, improving the working conditions of the mold.

4, Prevent sticking to the mold.

5, Reduces the friction and wear between the casting and the forming part of the mold, prolongs the life of the mold, and improves the surface quality of the casting.

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