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Hydraulic support plunger outer surface laser cladding repairing method

A technology of laser cladding and hydraulic support, applied in the direction of coating, metal material coating process, etc., can solve the problems of limited coating thickness, short service life, environmental pollution, etc., to improve corrosion potential, strong corrosion resistance, improve The effect of abrasion and scratch resistance

Active Publication Date: 2018-09-21
河南省煤科院耐磨技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this repair method is low in cost, easy to operate, and has good surface quality, the thickness of the coating is limited. Waste water and waste gas, causing serious environmental pollution

Method used

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  • Hydraulic support plunger outer surface laser cladding repairing method
  • Hydraulic support plunger outer surface laser cladding repairing method
  • Hydraulic support plunger outer surface laser cladding repairing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] An iron-based alloy powder for laser cladding, in terms of mass percentage, the composition of the iron-based alloy powder for laser cladding is: Cr 18.5%, Ni 3.5%, Si 2.0%, B 1.0%, C 0.2% , Mn 0.3%, Mo 0.4%, V0.3%, and the balance is Fe.

Embodiment 2

[0047] An iron-based alloy powder for laser cladding, in terms of mass percentage, the composition of the iron-based alloy powder for laser cladding is: Cr 18%, Ni 5%, Si 2%, B 0.4%, C 0.3% , Mn 0.2%, Mo 0.4%, V0.1%, and the balance is Fe.

Embodiment 3

[0049] An iron-based alloy powder for laser cladding, in terms of mass percentage, the composition of the iron-based alloy powder for laser cladding is: Cr 20%, Ni 6%, Si 2.5%, B 1%, C 0.1% , Mn 0.5%, Mo 0.5%, V0.3%, and the balance is Fe.

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Abstract

The invention discloses a hydraulic support plunger outer surface laser cladding repairing method. The hydraulic support plunger outer surface laser cladding repairing method comprises the following steps that firstly, turning is carried out on the outer surface of a hydraulic support plunger to be repaired to remove a fatigue layer and an electroplated layer on the outer surface of the hydraulicsupport plunger, and the outer surface of the hydraulic support plunger is washed; secondly, iron-base alloy powder for laser cladding is put into laser cladding equipment, the laser cladding equipment is used for carrying out laser cladding on the outer surface of the hydraulic support plunger, and a laser cladding layer is formed; thirdly, rough turning is carried out on the hydraulic support plunger which is subjected to laser cladding; fourthly, abrasive machining and polishing treatment are carried out on the hydraulic support plunger which is subjected to rough turning, and the roughnessRa of the outer surface of the polished hydraulic support plunger is smaller than or equal to 0.4; and fifthly, checking and flaw detection are carried out on the outer surface of the polished hydraulic support plunger, and laser cladding repairing of the outer surface of the hydraulic support plunger is completed after it is ensured that no defect exists. The laser cladding layer formed throughthe repairing method is high in hardness, large in thickness and high in corrosion resistance and longer in service life.

Description

technical field [0001] The invention relates to a laser cladding repair method, in particular to a laser cladding repair method for the outer surface of a hydraulic support live column. Background technique [0002] The hydraulic support is an important support equipment in coal mines. During the working process, the hydraulic support live column is prone to surface damage due to the impact of splashed coal gangue, and the underground environment is humid and relatively humid, and there is a large amount of SO 2 、H 2 S, Cl 2 A variety of corrosive media, such as accelerating the corrosion of the outer surface of the live column, will destroy the sealing effect of the live column, causing problems such as loss of pressure and pressure release in the oil cylinder matched with the live column of the hydraulic support, resulting in a decrease in the lifting force of the hydraulic support and a decrease in Production efficiency threatens production safety. Due to the large siz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10B22F1/00C22C38/02C22C38/54C22C38/04C22C38/44C22C38/46
CPCB22F1/0003C22C38/02C22C38/04C22C38/34C22C38/44C22C38/46C22C38/54C23C24/103
Inventor 丁紫阳刘鸣放马宗彬陈涛韩光普王腾飞黎文强赵向南
Owner 河南省煤科院耐磨技术有限公司
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