The cooling water tank leaks. If water leaks, the surface color of the quenched product will be blue-gray, and there will be peeling on the surface in severe cases. The reason is that the cooling water tank of the mesh belt under the quenching furnace leaks water into the inner cavity of the mesh belt, and the water is gasified and then goes upward. Push it into the furnace hall to oxidize and decarburize the surface of the product. The remedy is to find the leak point and weld it firmly, or replace the cooling tank with a new one.Vacuum Hardening Furnace From the surface color of the air leakage and decarburization products, it is slightly whiter than the normal color, unnatural, and has serious peeling phenomenon. Find the air leakage point: Furnace muffle cavity - the interface of the blanking dragon mouth - the cooling tank - the liquid level of the quenching medium, etc.
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