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Control valve casting process - Cere craft

2021-03-05
Look this way!
Control valve casting process - Cere craft
First:Wax film is done, after the sand solidification.
Second: The wax is melted by heat.
Last: An empty shell is left and molten iron is poured into it.
Advantage:
1.Wax can be recycled.
2.Make the surface of the smooth.