Laser-induction compounded cladding method for repairing continuous casting crystallizer

A continuous casting crystallizer and laser technology, applied in metal material coating process, coating, etc., to achieve the effects of increased service life, controllable thickness, and low dilution rate

Inactive Publication Date: 2013-02-06
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no literature report on the method of using laser-induction composite cladding to repair the continuous casting mold

Method used

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  • Laser-induction compounded cladding method for repairing continuous casting crystallizer
  • Laser-induction compounded cladding method for repairing continuous casting crystallizer
  • Laser-induction compounded cladding method for repairing continuous casting crystallizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The chemical composition of the continuous casting mold is: Cr 0.5~1.5 wt.%, Zr 0.08~0.3 wt.%, and the balance is Cu. The size of the damaged part of the continuous casting mold is: 100mm×50mm×30 mm (length×width × high), the specific implementation process of laser-induction composite cladding repair is as follows: figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown:

[0024] (1) Use special copper-based alloy powder 8 for laser induction composite cladding repair treatment, its chemical composition is: Ni 8 wt.%, Sn 8.5 wt.%, Al 7 wt.%, Si 0.8 wt.%, balance Be Cu, its average particle diameter is 65 μ m, then packs in the loading hopper 7 of automatic powder feeder 9;

[0025] (2) The surface of the damaged part of the continuous casting crystallizer 14 is derusted, degreased and surface activated, and a layer of nickel alloy 19 with a thickness of 8 μm is electroplated on the surface by electroplating. Among them, the electroplating nickel formula i...

Embodiment 2

[0032] The chemical composition of the continuous casting mold is: Co 2.0~3.0 wt.%, Be 0.2~0.8 wt.%, Ni 0.1~0.4 wt.%, Fe 0.2~0.5 and the balance is Cu. The size of the damaged part of the continuous casting mold It is: 90mm×60mm×25 mm (length×width×height), the specific implementation process of laser-induction composite cladding repair is as follows figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 Shown:

[0033] (1) Use special copper-based alloy powder 8 for laser induction composite cladding repair treatment, its chemical composition is: Ni 9 wt.%, Sn 8 wt.%, Al 12 wt.%, Si 1.2 wt.%, balance Be Cu, its average particle diameter is 40 μ m, then packs in the loading hopper 7 of automatic powder feeder 9;

[0034] (2) The surface of the damaged part of the continuous casting crystallizer 14 is derusted, degreased and surface activated, and a layer of nickel alloy 19 with a thickness of 12 μm is electroplated on the surface by electroplating. Among them, the ele...

Embodiment 3

[0041] The chemical composition of the continuous casting mold is: Cr 0.3~1.0 wt.%, Zr 0.1~0.5 wt.%, Fe 0.2~0.6 wt.%, Ti 0.1~0.3 wt.%, the balance is Cu, the continuous casting mold The size of the damaged part is: 100 mm × 50 mm × 30 mm (length × width × height). The specific implementation process of laser-induction composite cladding repair is as follows: figure 1 , figure 2 , image 3 and Figure 4 Shown:

[0042] (1) Use special copper-based alloy powder 8 for laser induction composite cladding repair treatment, its chemical composition is: Ni 8.7 wt.%, Sn 8 wt.%, Al 14.6 wt.%, Si 1.8 wt.%, balance Be Cu, its average particle diameter is 60 μ m, then packs in the loading hopper 7 of automatic powder feeder 9;

[0043] (2) The surface of the damaged part of the continuous casting crystallizer 14 is derusted, degreased and surface activated, and a layer of nickel alloy 19 with a thickness of 15 μm is electroplated on the surface by electroplating. Among them, the elec...

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Abstract

A laser-induction compounded cladding method for repairing a continuous casting crystallizer is characterized by comprising the following steps: conducting deoiling, derusting, crack or scratch excavating, activating, and electronickelling or chemical nickel plating on a damaged part of the continuous casting crystallizer; then adopting laser-induction compounded cladding dedicated copper-base alloy powder to repair the damaged part of the continuous casting crystallizer, wherein the dedicated copper-base alloy powder comprises the following chemical constituents by weight percent: 7 to 9 percent of Ni, 8 to 12 percent of Sn, 5 to 15 percent of Al, 0.8 to 2 percent of Si and Cu in balancing amount. According to the invention, laser-induction compounded cladding repairing can be conducted on the damaged part of the continuous casting crystallizer under the condition that the cladding efficiency is improved by 1 to 5 times, so as to solve the problem that the conventional repairing coating of the continuous casting crystallizer is thin, easy to peel and low in thermal conductivity.

Description

technical field [0001] The invention relates to a method for repairing a continuous casting crystallizer, in particular to a method for repairing a continuous casting crystallizer by laser-induction composite cladding. Background technique [0002] The continuous casting crystallizer is a forced water-cooled bottomless steel ingot mold, which is mainly lined with copper or copper alloy with very good thermal conductivity, and is covered with a jacket for cooling through water, so that the high-temperature molten steel is gradually cooled and solidified at the highest possible temperature. At a high casting speed, a slab with the required specification, shape and uniform thickness is formed. Therefore, the continuous casting mold is a very important part of the continuous casting machine, which is called the "heart" of the continuous casting equipment, and its quality has a great influence on the continuous casting production and the quality of the slab. [0003] With the de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/057C23C24/10
Inventor 周圣丰戴晓琴吴超张天佑
Owner NANCHANG HANGKONG UNIVERSITY
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