Oxidation and decarbonization preventing coating
An anti-oxidation and coating technology, which is applied in the field of metal heat treatment materials, can solve the problems of automatic peeling performance of coating protection and other problems, and achieve good self-stripping, good application prospects, and the effect of preventing oxidation and decarburization
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Embodiment 1
[0021] An anti-oxidation and decarburization coating of the present invention comprises a first coating and a second coating, and the first coating is located between the second coating and the workpiece surface;
[0022] The first coating consists of Na by weight ratio 2 O nSiO 2 45 parts, Al 2 o 3 30 parts, TiO 2 20 servings make up.
[0023] Na 2 O nSiO 2 where n is 1.6.
[0024] The thickness of the first coating was 1 mm.
[0025] The second coating is composed of 40 parts by weight of graphite powder and 25 parts of polyinternal olefin.
[0026] The graphite powder is 600 mesh.
[0027] The second coating thickness was 2 mm.
[0028] The coating of the present invention is used for workpiece protection, put into a furnace and heated to austenitization, and then quenched after heat preservation. The surface of the workpiece after quenching is as smooth as new, and the protected surface is free from oxidation and decarburization. The coating can effectively prev...
Embodiment 2
[0030] An anti-oxidation and decarburization coating of the present invention comprises a first coating and a second coating, and the first coating is located between the second coating and the workpiece surface;
[0031] The first coating consists of Na by weight ratio 2 O nSiO 2 50 parts, Al 2 o 3 40 parts, TiO 2 30 servings.
[0032] Na 2 O nSiO 2 where n is 3.
[0033] The first coating thickness was 0.5 mm.
[0034] The second coating is composed of 50 parts of graphite powder and 20 parts of polyinternal olefin by weight.
[0035] The graphite powder is 800 mesh.
[0036] The second coating thickness was 2 mm.
[0037] The coating of the present invention is used for workpiece protection, put into a furnace and heated to austenitization, and then quenched after heat preservation. The surface of the workpiece after quenching is as smooth as new, and the protected surface is free from oxidation and decarburization. The coating can effectively prevent oxidation a...
Embodiment 3
[0039] An anti-oxidation and decarburization coating of the present invention comprises a first coating and a second coating, and the first coating is located between the second coating and the workpiece surface;
[0040] The first coating consists of Na by weight ratio 2 O nSiO 2 30 parts, Al 2 o 3 20 parts, TiO 2 10 servings make up.
[0041] Na 2 O nSiO 2 where n is 1.2.
[0042] The first coating thickness was 2 mm.
[0043] The second coating is composed of 30 parts of graphite powder and 30 parts of polyinternal olefin by weight.
[0044] The graphite powder is 600 mesh.
[0045] The second coating thickness was 3mm.
[0046] The coating of the present invention is used for workpiece protection, put into a furnace and heated to austenitization, and then quenched after heat preservation. The surface of the workpiece after quenching is as smooth as new, and the protected surface is free from oxidation and decarburization. The coating can effectively prevent oxid...
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