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Preparation method of fused zinc erosion resistant coating material for thermal spraying and coating material prepared by the same

A technology of corrosion resistance to molten zinc and coating materials, applied in coatings, metal material coating processes, molten spraying, etc., can solve problems such as poor wear resistance and short service life, and achieve not easy to decompose, good high temperature wear resistance The effect of action

Inactive Publication Date: 2012-06-27
BEIJING GENERAL RES INST OF MINING & METALLURGY
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Problems solved by technology

[0004] In order to solve the problems of short service life and poor wear resistance in the existing hot-dip galvanizing process, the present invention provides a method for preparing a coating material resistant to molten zinc corrosion for thermal spraying, including:

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  • Preparation method of fused zinc erosion resistant coating material for thermal spraying and coating material prepared by the same
  • Preparation method of fused zinc erosion resistant coating material for thermal spraying and coating material prepared by the same

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Embodiment Construction

[0009] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0010] The specific embodiment of the present invention provides a kind of preparation method of the coating material that resists molten zinc corrosion for thermal spraying, comprises: replace the WC that easily decomposes under high temperature with η phase tungsten carbide as hard phase, use Fe 3 Al is the binder phase instead of Co, and the method of thermal spraying is used to prepare η-phase tungsten carbide-Fe on the surface of the hot-dip ga...

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Abstract

The invention provides a fused zinc erosion resistant coating material for thermal spraying and a preparation method of the coating material. The preparation method comprises the steps of: utilizing an eta phase tungsten carbide as a hard phase to replace the WC labile at a high temperature, and utilizing Fe3Al as an adhesion phase to replace Co, preparing an eta phase tungsten carbide-Fe3Al coating on a hot galvanized submerging roller or on the surface of a shaft sleeve of the hot galvanized submerging roller by a thermal spraying method to prepare a target product. The preparation method of the invention has the advantages that the hard phase, eta phase tungsten carbide can effectively prevent the zinc atoms from dispersing inward the alloy to resist against the fused zinc erosion, the eta phase tungsten carbide is high-temperature resistant and indecomposable to perform a good high-temperature wearing resistance function, and the adhesion phase Fe3Al and the Zn can be used for forming a fused zinc erosion resistant Fe-Al-Zn ternary phase, so that the fused zinc erosion resistance is better than that of a sintered WC-Co coating.

Description

technical field [0001] The invention relates to a preparation method of a novel coating material resistant to molten zinc corrosion for thermal spraying and the coating material prepared by the method, in particular to a novel carbide cermet coating material resistant to molten zinc corrosion for thermal spraying. Background technique [0002] Hot-dip galvanizing technology is the most economical and effective method to prevent steel materials from corroding in the natural environment. Steel components treated by hot-dip galvanizing have excellent corrosion resistance in corrosive environments such as atmosphere, seawater, and soil. At present, most steel strip hot-dip coating units in iron and steel enterprises use sinking roll devices. During the work, it was found that the sinking rolls and their bushings on both sides, which are completely immersed in molten zinc and aluminum, are strongly corroded by the zinc liquid, which directly affects the coating. When the surface ...

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Application Information

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IPC IPC(8): C23C4/06C23C4/12C23C4/129
Inventor 于月光高峰任先京张乐沈婕李会谦
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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