sand casting (41)

Sandblasting is the process of cleaning and roughening the surface of the substrate by the impact of high-speed sand flow, that is, using compressed air as the power to form a high-speed jet beam to spray the spray material (copper ore, quartz sand, corundum, iron sand, Hainan sand) at high speed To the surface of the workpiece that needs to be treated, the appearance or shape of the outer surface of the workpiece surface is changed.

investment casting 1

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