Method for repairing rolling mill housing by laser cladding based on double-sided adhesive metal powder film preset powder

A laser cladding, metal powder technology, applied in laser welding equipment, metal processing equipment, welding medium and other directions, can solve the problem of metal powder waste and other issues

Inactive Publication Date: 2019-09-10
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of coaxial powder feeding laser cladding on the opposite surface and the top

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Firstly, machine the bottom surface of the archway on the operation side, and use it as a benchmark to test the entire archway; record the measurement data of each part according to the requirements of the drawings; check the frame of the archway on the operation side and adjust the rack on the operation side The frame on the transmission side is in the best alignment state; next, conduct a comprehensive inspection of the window and notch of the frame to determine the amount of removal of the window and notch; use machining methods to remove the fatigue wear layer on the surface of the window and notch, and the removal amount 0.2mm; use absolute ethanol to clean the processed surface to remove oil and other impurities; prepare alloy powder, and the components are as follows according to mass percentage: C: 0.31%, Cr: 16%, Ni: 9%, Mo: 1.9%, The balance is Fe, and the particle size of the alloy powder used is 350-450 mesh; use the double-sided adhesive metal powder film to...

Embodiment 2

[0038] Firstly, machine the bottom surface of the archway on the operation side, and use it as a benchmark to test the entire archway; record the measurement data of each part according to the requirements of the drawings; check the frame of the archway on the operation side and adjust the rack on the operation side The frame on the transmission side is in the best alignment state; next, conduct a comprehensive inspection of the window and notch of the frame to determine the amount of removal of the window and notch; use machining methods to remove the fatigue wear layer on the surface of the window and notch, and the removal amount 0.3mm; use absolute ethanol to clean the processed surface to remove oil and other impurities; prepare alloy powder, and the components are as follows in terms of mass percentage: C: 0.35%, Cr: 17%, Ni: 11%, Mo: 2.2%, The balance is Fe, and the particle size of the alloy powder used is 350-450 mesh; use the double-sided adhesive metal powder film to...

Embodiment 3

[0040] Firstly, machine the bottom surface of the archway on the operation side, and use it as a benchmark to test the entire archway; record the measurement data of each part according to the requirements of the drawings; check the frame of the archway on the operation side and adjust the rack on the operation side The frame on the transmission side is in the best alignment state; next, conduct a comprehensive inspection of the window and notch of the frame to determine the amount of removal of the window and notch; use machining methods to remove the fatigue wear layer on the surface of the window and notch, and the removal amount 0.2mm; use absolute ethanol to clean the processed surface to remove oil and other impurities; prepare alloy powder, and the components are: C: 0.31%, Cr: 17%, Ni: 9%, Mo: 1.9%, The balance is Fe, and the particle size of the alloy powder used is 350-450 mesh; use the double-sided adhesive metal powder film to preset the alloy powder, remove the sti...

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Abstract

The invention provides a method for repairing a rolling mill housing by laser cladding based on double-sided adhesive metal powder film preset powder, and relates to the technical field of metal surface treatment. The method comprises the following steps that (1) the metal powder is sprayed on the adhesive surface of one side of a double-sided adhesive film, and is subject to rolling treatment toobtain a double-sided adhesive metal powder film, wherein the metal powder comprises C, Cr, Ni, Mo and Fe; (2) the other side glue surface of the double-sided adhesive metal powder film adheres to thewindow surface and the notch surface of the rolling mill housing to be repaired, and the double-sided adhesive metal powder film is preset; and (3) laser cladding is performed on the preset double-sided adhesive metal powder film to obtain a laser cladding metal layer. According to the method, the utilization rate of the metal powder is greatly improved, the laser cladding efficiency is improved,the repairing cost is reduced, and meanwhile the service life of the repaired rolling mill housing can be remarkably prolonged.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a method for repairing a rolling mill archway by laser cladding based on double-sided adhesive metal powder film preset powder. Background technique [0002] In the process of steel rolling production, most of the rolling mill arches are made of ordinary steel castings, which have been subjected to high temperature, high pressure water vapor corrosion for a long time, accompanied by acid water, oil corrosion, and impact and vibration of reciprocating rolling force. Under service, the windows and notch surfaces of the rolling mill archway are susceptible to corrosion and wear. In order to restore the dimensional accuracy of the window, there are usually the following conventional repair methods: ① use online machining to repair the archway; ② use metal repair fluid to repair; ③ conventional arc surfacing repair. These methods all have problems such as insufficient...

Claims

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Application Information

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IPC IPC(8): B23K26/342B23K26/60B23K35/30B23P6/00
CPCB23K26/342B23K26/60B23K35/3086B23P6/00
Inventor 郑丽娟赵华洋张钰付晨付宇明
Owner YANSHAN UNIV
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