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Method for preparing heat-resistant antifriction alloy coating on surface of continuous casting roller

A technology of wear-resistant alloy and continuous casting roll, which is applied in the direction of metal material coating process, coating, manufacturing tools, etc., can solve the problems that the process parameters cannot be adapted or not seen, and achieve the improvement of heat resistance and wear resistance and the use of Long life, strong metallurgical bonding, excellent heat and wear resistance

Active Publication Date: 2012-05-16
唐山大陆激光工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for other specific equipment components, such as specific structures such as continuous casting rolls, the process parameters provided by the existing laser cladding process are obviously unable to adapt
[0014] According to the applicant's search and verification: there is no domestic precedent for preparing a heat-resistant and wear-resistant alloy coating on the surface of continuous casting rolls by using laser cladding technology, and no relevant reports have been seen abroad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1 Preparation of heat-resistant and wear-resistant alloy coating on the surface of continuous casting roll

[0040] The base material of the continuous casting roll is 42CrMo alloy steel

[0041]The chemical composition of the iron-based alloy powder with good metallurgical and mechanical compatibility with the continuous casting roll matrix is ​​as follows: C: 0.06%, Cr: 15.4%, Ni: 3%, Mo: 1%, Si: 1 %, N: 0.8%, Nb: 1.0%, Ta: 0.3%, B: 0.3%, and the balance is Fe.

[0042] The laser cladding process includes the following processes:

[0043] (1) Surface pretreatment of continuous casting rolls

[0044] Degrease and derust the continuous casting roll surface at room temperature, and clean it with alcohol. Inspect the processed parts of continuous casting rolls by coloring flaw detection method, and it is required that the processed parts have no cracks, pores, inclusions and other defects;

[0045] (2) Selection of alloy powder and adjustment of automatic powd...

Embodiment 2

[0058] Example 2 Preparation of heat-resistant and wear-resistant alloy coating on the surface of continuous casting roll

[0059] The base material of the continuous casting roll is 42CrMo alloy steel

[0060] The chemical composition of the iron-based alloy powder with good metallurgical and mechanical compatibility with the continuous casting roll matrix is ​​as follows: C: 0.05%, Cr: 15%, Ni: 3.5%, Mo: 1.2%, Si: 1.2 %, N: 0.6%, Nb: 0.9%, Ta: 0.4%, B: 0.4%, and the balance is Fe.

[0061] The laser cladding process includes the following processes:

[0062] (1) Surface pretreatment of continuous casting rolls

[0063] Degrease and derust the continuous casting roll surface at room temperature, and clean it with alcohol. Inspect the processed parts of continuous casting rolls by coloring flaw detection method, and it is required that the processed parts have no cracks, pores, inclusions and other defects;

[0064] (2) Selection of alloy powder and adjustment of automatic...

Embodiment 3

[0077] Example 3 Preparation of heat-resistant and wear-resistant alloy coating on the surface of continuous casting roll

[0078] The base material of the continuous casting roll is 42CrMo alloy steel

[0079] The chemical composition of the iron-based alloy powder with good metallurgical and mechanical compatibility with the continuous casting roll matrix is ​​as follows: C: 0.1%, Cr: 16%, Ni: 3.8%, Mo: 1.5%, Si: 1.1 %, N: 0.7%, Nb: 0.8%, Ta: 0.2%, B: 0.5%, and the balance is Fe.

[0080] The laser cladding process includes the following processes:

[0081] (1) Surface pretreatment of continuous casting rolls

[0082] Degrease and derust the continuous casting roll surface at room temperature, and clean it with alcohol. Inspect the processed parts of continuous casting rolls by coloring flaw detection method, and it is required that the processed parts have no cracks, pores, inclusions and other defects;

[0083] (2) Selection of alloy powder and adjustment of automatic ...

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Abstract

The invention discloses a method for preparing a heat-resistant antifriction alloy coating on the surface of a continuous casting roller. The method is characterized by comprising the following steps of: (1) pretreating the surface of the continuous casting roller; (2) selecting alloy powder, and adjusting an automatic powder feeding device; (3) adjusting light beams; (4) selecting a DL-HL-T5000 type CO2 laser and an operating platform as a SIMENS numerical control laser machine, feeding the alloy powder into a laser molten bath automatically by using a synchronous powder feeding device, focusing the laser beams at high power, and feeding by using an automatic powder feeding head along a rotating wheel shaft to form a uniform compact laser cladding layer on the surface of the continuous casting roller; and (5) cladding, and then performing flaw detection. By the laser cladding method, the alloy powder with heat resistance and friction resistance is uniformly cladded on the surface of the continuous casting roller to form a uniform compact metallurgical bonding coating, and the cladding layer is firmly combined with a substrate in a metallurgical manner and cannot be stripped.

Description

technical field [0001] The invention relates to a method for preparing a wear-resistant coating on the surface of metallurgical equipment components, in particular to a method for preparing a heat-resistant and wear-resistant alloy coating on the surface of a continuous casting roll by adopting laser cladding technology, which belongs to the technical field of laser cladding. Background technique [0002] The continuous casting roll is the core component of the continuous casting machine, and its performance directly affects the continuous casting operation rate, continuous casting production cost and slab quality. Since the continuous casting rolls are continuously in contact with the high-temperature slab that has not yet solidified inside, they not only bear the repeated action of alternating thermal stress caused by instantaneous high temperature and water cooling, but also bear the mechanical stress of slab bulging force and static pressure. At the same time, it also be...

Claims

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Application Information

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IPC IPC(8): C23C24/10B23K26/34
Inventor 陶兴启黄旭东崔忠宝王悦斌许静
Owner 唐山大陆激光工程技术有限公司
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