Injection mold factory Troubleshooting plan for rust after injection molding

As we all know, rust mold will cause quality problems to the entire plastic parts. The plastic mould is mainly made of tool steel. During the work, corrosive gas, water and other substances causing rust were encountered, so this problem was eliminated.

(1) Gas produced by melting decomposition.

Some materials will produce volatile gases when heated. These gases are corrosive and will corrode the mold. Therefore, when the equipment stops working, clean the mold with a soft cloth and close the mold. If it is not used for a long time, spray the anti rust agent in the cavity, and apply butter on the gate when closing the mold.

(2) Cooling water in the mold.

Cooling water is usually used in the mold for cooling, so there is more water around the molding equipment. If the mold is cooled below the dew point, the moisture in the air will form water droplets on the mold surface. If it is not wiped off in time, it is easy to rust. Especially after the mold stops working, the condensed water will be produced quickly. Therefore, when the molding stops, the cooling water is also turned off and the mold is dried.

(3) Hard alloy produced during forming.

After the mold runs for a long time, the molding material precipitates and decomposes to form carbide, which often leads to wear, corrosion or rust of the mold. In this regard, if carbide formation is found, it should be removed immediately.