Mold rust is a relatively obvious phenomenon, it not only affects the appearance of the mold, but also will directly affect the overall quality of the mold, so the mold rust is a problem that can not be ignored, the following is the analysis of the reasons and measures, for your reference.
The causes of mold rust are:
1. Tthe generation of the molding material decomposition
2. The return tide of the mold
3. Hand sweat
Analysis of mold rust:
1.The molding material decomposition of the generation (gas, residue) to the mold corrosion is the most common. In order to prevent the rust of the mold is to chrome the mold cavity, but the chrome treatment can not fully solve the problem, because the decomposition of the product also has deep corrosion of the pin hole, which are the places that cannot be plated.
2. When the mold cobelow the moisture return point, the moisture in the air returns on the surface of the mold and produces water droplets, and rust will occur.
Solve the problem of mold rust:
1.Short-term: hold the cloth to wipe the surface of the mold cavity gently. Dry the molding material adequately and reduce the cylinder temperature to prevent material decomposition. When the molding is temporarily stopped, spray the rust repellent on the mold type cavity, and then close the mold.
2.Long-term: the product material into the decomposition of the mold does not corrode the material. Easy to decompose materials, PVC, POM, EVA, PC and foaming materials. Because the decomposition product has a corrosive effect on the mold, if the plastic raw materials cannot be changed, the mold should be chrome plated. When the mold stops from use for a long time, coat the outside and the moving parts of the mold with a layer of butter.
Post time: May-04-2023