INJECTION MOLDING MOLD RUST AND ITS ELIMINATION METHOD

The gas produced by the decomposition of melt

Some raw materials will produce volatile gases after heating, many raw materials also produce volatile gases when overheating, these gases are more corrosive, they diffuse around the machine, when the mold does not work, they will corrode the mold.

In this regard, when the machine stops working, use a soft cloth to wipe the mold and close the mold. If not used for a long time, the mold cavity should be sprayed with anti-rust agent, and butter should be applied when the mold is closed and the gate should be blocked.

Cooling water in mold

There is more cooling water in the mold to wake up the cooling, so there is more water around the machine. If the mold is cooled to the dew point, the moisture in the air will form water beads on the surface of the mold, and it is easy to rust if it is not erased in time.

Especially after the mold stops working, condensate will soon be produced. Therefore, do not easily stop the molding, even if you want to stop, you should also turn off the cooling water, and dry the mold.

Carbide produced during molding

After the mold works for a long time, carbides are precipitated and decomposed in the forming material, which often makes the mold wear, corrosion or rust. In this regard, if carbides are found, they should be wiped off and wiped off immediately with a dry cloth.