Protective coating for surface of steel workpiece

A workpiece surface, protective technology, applied in the direction of alkali metal silicate coating, coating, etc., can solve the problems of short overall life, carbon atom reduction, wear resistance reduction, etc., to achieve long production cycle and prevent high temperature oxidation of the surface , The effect of improving the production environment

Inactive Publication Date: 2010-04-21
INNER MONGOLIA FIRST MACHINERY GRP
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Problems solved by technology

[0003] The purpose of the present invention is aimed at high-temperature oxidative decarburization of the surface (matrix) of iron and steel workpieces, and surface oxidation and decarburization in an oxidative atmosphere during heat treatment, forging, hot rolling, and coil forming heating, especially in the high-temperature environment of heat treatment It is extremely easy to oxidize and decarburize, the carbon atoms are red

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  • Protective coating for surface of steel workpiece

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Embodiment Construction

[0013] The present invention is a water-based coating composed of graphite and a high-temperature binder, which is applied on the entire surface (partial) or protective part of a steel workpiece to form a high-strength, dense protective layer at high temperature; thereby shielding its surface from being oxidized, And make the carbon atoms in the paint diffuse to the workpiece surface (matrix) structure, and finally realize the protective coating that prevents surface high-temperature oxidation and decarburization, improves hardness and wear resistance, and improves the overall life of steel workpieces. The basic process of coating preparation, application and heat treatment is as follows:

[0014] Component preparation————————————————————————————————————————————————————————————————— → coating surface of steel workpiece———————————— → coating self-stripping

[0015] Among the components of the coating: graphite as aggregate, water glass (sodium silicate) as high temperature bin...

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Abstract

The invention relates to a protective coating for the surface of a steel workpiece, which comprises the following components: graphite, sodium silicate and a surface penetrant, wherein the volume ratio of the graphite to the sodium silicate is 1: 3-7; and the surface penetrant accounts for 0.05 to 0.15 percent of the total volume in the components. The coating has the advantages that the coating not only avoids disadvantages caused by usual methods such as adding alloy, performing surface high-frequency quenching, forming carburizing atmosphere and the like, prevents the surface of the steel workpiece from high-temperature oxidation decarbonization, but also improves the hardness of the surface of the steel workpiece (matrix) to realize the improvement of the wear resistance thereof, and solves the existing problems of high production cost, low production efficiency, long production period, large energy consumption and environmental pollution.

Description

technical field [0001] The invention relates to a protective coating for the surface of steel workpieces, in particular to a protective coating for preventing high-temperature oxidation and decarburization of the surface of steel workpieces, improving hardness and wear resistance, and belongs to the field of coatings. Background technique [0002] At present, both at home and abroad, the purpose of improving the hardness of the surface (matrix) of steel workpieces is to achieve the wear resistance, and finally to improve the life of the workpieces. The basic route is to add alloying elements to the workpiece, cast infiltration technology, surface high-frequency quenching, or form a carburizing atmosphere during heat treatment, hot forging, hot rolling, and coil forming heating to increase the carbon potential concentration, etc., but there are High production cost, low production efficiency, long production cycle, complex technology, equipment investment, large energy consum...

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Application Information

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IPC IPC(8): C09D1/02C09D7/12C09D5/00
Inventor 钱裕生武玉平王飞腾
Owner INNER MONGOLIA FIRST MACHINERY GRP
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