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A steel-copper composite wear-resistant material for laser manufacturing rolling mill pressing nuts

A technology of pressing down nuts and wear-resistant materials, which is applied in the coating process and coating of metal materials, etc., can solve the problem that the powder cannot achieve the expected effect, and achieve the effects of fine and uniform microstructure, improved service life and improved mechanical properties.

Active Publication Date: 2021-02-09
沈阳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

At present, there is no alloy powder material on the market that can be directly used for laser cladding to manufacture rolling nuts. A single powder cannot achieve the desired effect. It is necessary to add other alloys to the existing powder to make the powder into a multi-element alloy powder. , thus improving hardness and wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using a 3kw fiber laser, develop and design wear-resistant copper-based alloy powder, and perform laser cladding on the base material of the steel-based pressed nut. The composition of the steel-copper composite manufacturing wear-resistant material is: Zn: 23%, AL: 6%, Mn: 2%, Fe: 3%, Ni: 1%, and the balance is Cu. Firstly, the surface of the base material is cleaned, and the grease and rust on the surface of the base material are cleaned with acetone; the copper-based powder of the multi-element alloy is dried and kept at 200°C for 2 hours. After the cladding conditions are met, the cladding process parameters are adopted: power 2500w, scanning speed 800mm / min, lap rate 40%, and simultaneous powder feeding 21g / min for laser cladding. The thickness of single-layer cladding is 1.2mm, and multi-layer cladding is carried out. The number of cladding layers is 17, and the hardness after cladding is 180HBW. The steel-copper composite rolling mill pressed nut prepared by las...

Embodiment 2

[0027] Using a 3kw fiber laser, develop and design wear-resistant copper-based alloy powder, and perform laser cladding on the base material of the steel-based pressed nut. The composition of the wear-resistant copper-based alloy powder material is Zn: 34%, AL: 2%, Mn: 3%, Fe: 2%, Ni: 1%, and the balance is Cu. Firstly, the surface of the base material is cleaned, and the grease and rust on the surface of the base material are cleaned with acetone; the copper-based powder of the multi-element alloy is dried and kept at 200°C for 2 hours. After the cladding conditions are met, the cladding process parameters are adopted: power 2700w, scanning speed 1000mm / min, lap rate 50%, synchronous powder feeding 23g / min for laser cladding. The thickness of single-layer cladding is 1.2mm, and multi-layer cladding is carried out. The number of cladding layers is 17, and the hardness after cladding is 120HBW. The steel-copper composite rolling mill prepared by laser cladding presses down the...

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PUM

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Abstract

The invention discloses a steel-copper composite wear-resistant material used for laser manufacturing rolling nuts. The alloy material is characterized in that it is based on brass, and Al, Mn, Fe, and Ni elements are added at the same time. The material consists of the following mass percentages Component composition: Zn 10-47%, AL 2-9%, Mn 2-5%, Fe 1-5%, Ni 1-5%, Cu balance. In the present invention, by optimizing the alloy material ratio and laser cladding process parameters, the high-strength wear-resistant alloy material can be manufactured on a steel base material through laser cladding technology to produce a high-strength copper alloy fusion metallurgically combined with the base material. The toughness, corrosion resistance, and wear resistance of the cladding layer meet the requirements for the use of nuts pressed down by rolling mills, and the production cost is reduced and the service life is improved.

Description

technical field [0001] The invention relates to a steel-copper composite manufacturing high-strength wear-resistant layer for metallurgical equipment components, focusing on the steel-copper composite wear-resistant material used for laser manufacturing rolling nuts, and belongs to the technical field of laser cladding. Background technique [0002] The pressing device of the rolling mill is one of the important structures of the rolling mill, which is used to adjust the roll gap, also known as the roll gap adjustment device. According to the transmission mode, the pressing device is divided into three types: manual pressing, electric pressing and hydraulic pressing. Among them, the electric pressing device is suitable for slab mills, medium-thick slab mills, etc., which require a large range of roll gap adjustment and fast pressing speed. It is mainly composed of pressing screws, nuts and their transmission mechanisms. [0003] In the roughing mill pressing device of the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C24/10C22C9/04C22C18/02C22C30/02C22C30/06
Inventor 柳晓彤倪春雷董思远
Owner 沈阳大陆激光工程技术有限公司
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