Preparation method of corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating on surface of crystallizer copper plate

A crystallizer copper plate and composite coating technology, which is applied to the surface coating liquid device, coating, metal material coating process, etc., can solve the problems of poor corrosion resistance, high porosity, etc., to improve corrosion performance, The effect of high density and superior performance

Active Publication Date: 2018-05-25
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, electroplating has the problem of waste liquid discharge and environmental protection, while supersonic flame spraying has disadvantages such as high porosity and poor corrosion resistance.

Method used

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  • Preparation method of corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating on surface of crystallizer copper plate
  • Preparation method of corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating on surface of crystallizer copper plate
  • Preparation method of corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating on surface of crystallizer copper plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) First use supersonic flame spraying (HVOF or HVAF) to prepare Cr 3 C 2 -NiCr layer, mix aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane (MTMS) according to the mass ratio: 100:66.7 and stir for 4 to 6 hours to prepare aluminum-silicon composite sol (pH﹤1) and Methyltrimethoxysilane mixture.

[0018] (2) The mixture of aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane was uniformly coated on Cr by dipping and pulling method. 3 C 2 -NiCr coating surface, stand and age at room temperature for 4 to 6 hours, and then cover Cr with aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane mixture 3 C 2 -NiCr coating was kept at 60°C for 0.5 hours, and then cured at 180°C for 0.5h to obtain Cr 3 C 2 -NiCr-aluminum silicon composite siloxane composite coating.

Embodiment 2

[0020] (1) First use supersonic flame spraying (HVOF or HVAF) to prepare Cr 3 C 2 -NiCr layer, mix aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane (MTMS) according to the mass ratio: 100:100 and stir for 4 to 6 hours to prepare aluminum-silicon composite sol (pH﹤1) and Methyltrimethoxysilane mixture.

[0021] (2) The mixture of aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane was uniformly coated on Cr by dipping and pulling method. 3 C 2 -NiCr coating surface, stand and age at room temperature for 4 to 6 hours, and then cover Cr with aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane mixture 3 C 2 -NiCr coating was kept at 60°C for 0.5 hours, and then cured at 180°C for 0.5h to obtain Cr 3 C 2 -NiCr-aluminum silicon composite siloxane composite coating.

Embodiment 3

[0023] (1) Firstly, the Cr3C2-NiCr layer is prepared by supersonic flame spraying (HVOF or HVAF), and the aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane (MTMS) are mixed and stirred according to the mass ratio: 100:150 After 4 to 6 hours, a mixture of aluminum-silicon composite sol (pH<1) and methyltrimethoxysilane is prepared.

[0024] (2) The mixture of aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane was uniformly coated on Cr by dipping and pulling method. 3 C 2 -NiCr coating surface, stand and age at room temperature for 4 to 6 hours, and then cover Cr with aluminum-silicon composite sol (pH﹤1) and methyltrimethoxysilane mixture 3 C 2 -NiCr coating was kept at 60°C for 0.5 hours, and then cured at 180°C for 0.5h to obtain Cr 3 C 2 -NiCr-aluminum silicon composite siloxane composite coating.

[0025] like figure 1 shown as Cr 3 C 2 - Curing curves of NiCr-aluminum-silicon composite siloxane composite coatings during preparation. C...

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Abstract

The invention discloses a preparation method of a corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating on the surface of a crystallizer copper plate, and belongs to the technicalfield of metal surface engineering. The corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating comprises a thermal-sprayed Cr3C2-NiCr coating and an aluminum-silicon siloxane coating. The preparation method comprises the step that the Cr3C2-NiCr coating which is hundreds of microns thick and the aluminum-silicon siloxane coating which is tens of microns thick are sequentiallysynthesized on the surface of the crystallizer copper plate. The corrosion-resistant Cr3C2-NiCr-aluminum-silicon siloxane composite coating prepared through the method has high compactness and good corrosion resistance, can be effectively used as a protective coating on the surface of the crystallizer copper plate, and effectively prolongs the service life of the crystallizer copper plate.

Description

Technical field: [0001] The invention belongs to the technical field of metal surface engineering, in particular to a corrosion-resistant Cr 3 C 2 - The preparation method of the NiCr-aluminum-silicon composite siloxane composite coating is mainly used in the anti-corrosion protection of the copper plate of the crystallizer. Background technique: [0002] As the core component of the continuous casting machine—the crystallizer, its function is to rapidly cool the molten steel injected from the ladle to form a slab shell and pull it out under the action of the dummy rod to form a slab. To some extent, the quality of the horizontal continuous casting slab and the continuous casting efficiency directly depend on the surface quality of the mold copper plate. The crystallizer is under the condition of high temperature and high pressure for a long time, and the working condition is extremely bad, so the crystallizer is easy to fail. Because the stability of the performance of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/129C23C4/06B05D1/18B05D7/24B05D7/14
CPCB05D1/18B05D7/14B05D7/24C23C4/06C23C4/129
Inventor 张世宏王学生蔡飞张林吴朝军
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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