The addition of coal powder to the wet molding sand of cast iron can prevent the sand adhesion defect on the surface of the casting, improve the surface finish of the casting, reduce the sand inclusion defect, improve the breakdown function of the molding sand, and effectively prevent the generation of subskin pores for the wet ductile iron parts, the circular vortex burner can be used, and the air does not need to be preheated.
Pulverized coal 2018-10-25 Number of times read 67Frequency