Baking process and surface treatment of wear-resistant castings

- Nov 17, 2018 -

The surface treatment of wear-resistant castings is a process for forming a layer of mechanical, physical and chemical layers on the surface of the substrate. The purpose of the surface treatment is to satisfy the corrosion resistance and wear resistance of the products. Decorative or other special functional requirements. For metal castings, the commonly used surface treatment methods are mechanical grinding, chemical treatment, surface heat treatment, spraying surface, surface treatment is to clean, deburring, oil removal, oxidation skin, etc.

Baking procedure of wear-resistant castings

Fix the wax mold on the die head and finish the sand blast drying process by placing the wax mold in a metal closed oven (usually a steam furnace burning medium oil). Because the industrial wax melting point is not high and the temperature is about 150 ", the wax mold is heated and dissolved to form the wax water flowing out along the gate, this process is called dewaxing." The wax mold after wax removal is only an empty sand shell.

The key to wear-resistant castings is to use this empty sand shell. This kind of wax can be used over and over again, but the wax must be refiltered, otherwise the unclean wax will affect the surface quality of the blank, such as: surface sand holes, pockmarks, and also affect the shrinkage of the casting products.