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Method for preparing strengthened coatings on the continuance casting crystallizer surface

A casting mold and surface strengthening technology is applied in the field of preparation of enhanced coatings on the surface of continuous casting molds, which can solve the problems of high cost, complex preparation process, and many control parameters, so as to reduce manufacturing or repair costs and simplify spraying. process, the effect of ensuring the working life

Inactive Publication Date: 2008-02-06
GUANGZHOU RUIYOU SURFACE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The problem of strengthening the bonding performance between the coating and the copper or copper alloy substrate can be solved by preparing an intermediate transition coating, but the preparation process is relatively complicated, many parameters need to be controlled, and the cost is also high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 and 2

[0021] Embodiment 1 and 2 all comprise the following steps:

[0022] (1) Use industrial alcohol or acetone or other industrial chemical reagents to remove stains on the surface of the copper plate before spraying the copper plate of the crystallizer, and then blow it with compressed air until the surface is dry;

[0023] (2) select cermet powder as described in the content of the invention to carry out dehumidification treatment before explosive spraying, improve the fluidity of powder;

[0024] (3) Explosive spraying of cermet powder to the working surface of the copper plate to directly form a working coating with a coating thickness of 250-500 μm.

[0025] Cermet powder is made of Ni-Cr alloy and Cr 3 C 2 Composition, the components are as follows:

[0026] Working Coating Material Components

[0027] Explosion spraying parameters are as follows:

[0028] Oxygen parameters

[0029] The crystallizer surface strengthening coating prepared by the me...

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PUM

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Abstract

The invention relates to a method for preparing reinforcing coating on the surface of a continuous casting crystallizer, comprising the steps as follow: preprocessing a crystallizer copper plate surface or a copper alloy plate surface, and spray painting the metal ceramic powder directly on the crystallizer copper plate surface or the copper alloy plate surface by exploding spray painting method to form surface reinforcing coating, wherein the metal ceramic powder consists of alloy and carbide, Ni-Cr alloy and Cr3C2 are preferred. The invention overcomes the drawbacks existing in the prior art, which has better integrating performance between the reinforcing coating and the copper or the copper alloy based body, and is adaptable to the work environment of the crystallizer, and avoids the preparation of middle transition coating, so as to simplify manufacture and repair method of the crystallizer and reduces the cost. The invention is widely suitable for reinforcing and repairing the copper surface or the copper alloy surface.

Description

technical field [0001] The invention relates to a method for preparing a strengthened coating on the surface of a copper or copper alloy substrate, in particular to a method for preparing a strengthened coating on the surface of a continuous casting crystallizer copper plate. Background technique [0002] Continuous steel casting is a production process in which high-temperature molten steel is continuously cast into a billet with a certain cross-sectional shape and a certain size specification. In the process of continuous steel casting, the molten steel in the ladle is continuously injected into the mold through the tundish and passes through the primary cooling of the mold, the secondary spray cooling in the roll guide area and / or the subsequent three natural cooling, so as to complete the conversion from liquid steel to Casting solidification process to steel blank. The crystallizer needs to take away a large amount of heat brought by the molten steel through the coolin...

Claims

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Application Information

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IPC IPC(8): B22D11/10B22F7/04B22F3/08C04B35/56
Inventor 邓昊
Owner GUANGZHOU RUIYOU SURFACE TECH
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