Injection Molding
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Oil Spots on CMC Injection Molded Products
Fenómeno del problema
Oil spots appear on the surface of CMC injection molded products after demolding, from mold release agent residue or lubricant exudation
Análisis de la causa
Mold release agent is sprayed too much or distributed unevenly; CMC internal lubricant (stearic acid type) exudes to the surface; mold lubricating oil seeps into the cavity
Solución
1)Reduce the amount of mold release agent or switch to dry-film mold release agent; 2)Use internal lubricant instead of external mold release agent; 3)Seal mold lubrication parts to prevent oil from seeping into the cavity; 4)Clean the product surface to remove oil spots and then detect the source
Conclusión clave
Oil spots are caused by external sources of mold release agent and lubricant; reducing mold release agent and sealing mold lubrication are the key
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