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Alloy powder for laser cladding repair of mining hydraulic stand column middle cylinder and repair method

A hydraulic column, laser cladding technology, applied in the direction of metal material coating process, coating, etc., can solve the problems of surface pitting, short corrosion life, alloy coating pitting, etc., to refine grains, improve production Effect of temperature and toughness increase

Active Publication Date: 2021-06-29
XIAN BESAME LASER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the technical problem that surface pitting often occurs in the overlapping area of ​​the cladding layer when the existing hydraulic cylinder for mining is repaired by laser cladding, and to provide a hydraulic cylinder for mining. Laser cladding repair method for column and middle cylinder and alloy powder for cladding
[0009] The invention is aimed at the problem that the alloy coating that occurs when the laser cladding repairs the mining hydraulic cylinder is prone to pitting and causes short corrosion life, and proposes a mining hydraulic column with high pitting resistance and long service life Alloy powder and repair method for laser cladding repair of middle cylinder

Method used

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  • Alloy powder for laser cladding repair of mining hydraulic stand column middle cylinder and repair method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076]An alloy powder for laser cladding and repairing the middle cylinder of a mining hydraulic column, including the powder of the following components:

[0077] Cr: 16.6wt%;

[0078] Ni: 1.75wt%;

[0079] Co: 1.75wt%;

[0080] Mo: 1.0wt%;

[0081] Mn: 0.2wt%;

[0082] Nb: 0.15wt%;

[0083] C: 0.10wt%;

[0084] N: 0.10wt%;

[0085] Ce: 0.045wt%;

[0086] B: 0.76wt%;

[0087] Si: 1.0wt%;

[0088] Fe is the balance.

[0089] The above-mentioned alloy powder for laser cladding and repairing the middle cylinder of mining hydraulic column is prepared by pre-mixing and then using nitrogen atomization powder making method. The particle size distribution of the prepared powder is between 120 and 260 mesh. figure 1 It is the scanning electron microscope picture of the alloy powder. It can be seen that the sphericity is good in the picture, which can be used for laser cladding repair.

[0090] A laser cladding repair method for the middle cylinder of a mine hydraulic column...

Embodiment 2

[0096] An alloy powder for laser cladding and repairing the middle cylinder of a mining hydraulic column, including the powder of the following components:

[0097] Cr: 15.6wt%;

[0098] Ni: 1.65wt%;

[0099] Co: 1.65wt%;

[0100] Mo: 0.9wt%;

[0101] Mn: 0.3wt%;

[0102] Nb: 0.12wt%;

[0103] C: 0.09wt%;

[0104] N: 0.11wt%;

[0105] Ce: 0.035wt%;

[0106] B: 0.68wt%;

[0107] Si: 0.9wt%;

[0108] Fe is the balance.

[0109] The above-mentioned alloy powder for laser cladding and repairing the middle cylinder of mining hydraulic column is prepared by pre-mixing and then using nitrogen atomization powder making method, and the particle size distribution of the prepared powder is between 120 and 260 mesh.

[0110] A laser cladding repair method for the middle cylinder of a mine hydraulic column, based on the alloy powder for laser cladding repair of the mine hydraulic column middle cylinder, comprising the following steps:

[0111] 1) Remove the oil and impurities on...

Embodiment 3

[0116] An alloy powder for laser cladding and repairing the middle cylinder of a mining hydraulic column, including the powder of the following components:

[0117] Cr: 15.0wt%;

[0118] Ni: 1.5wt%;

[0119] Co: 1.5wt%;

[0120] Mo: 0.8wt%;

[0121] Mn: 0.0wt%;

[0122] Nb: 0.1wt%;

[0123] C: 0.07wt%;

[0124] N: 0.06wt%;

[0125] Ce: 0.03wt%;

[0126] B: 0.6wt%;

[0127] Si: 0.8wt%;

[0128] Fe is the balance.

[0129] The above-mentioned alloy powder for laser cladding and repairing the middle cylinder of mining hydraulic column is prepared by pre-mixing and then using nitrogen atomization powder making method, and the particle size distribution of the prepared powder is between 120 and 260 mesh.

[0130] A laser cladding repair method for the middle cylinder of a mine hydraulic column, based on the alloy powder for laser cladding repair of the mine hydraulic column middle cylinder, comprising the following steps:

[0131] 1) Remove the oil and impurities on the ...

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Abstract

The invention relates to laser machining repair, in particular to alloy powder for laser cladding repair of a mining hydraulic stand column middle cylinder and a repair method. In order to solve the problem that during laser cladding repair of the mining hydraulic middle cylinder, an alloy coating is prone to pitting corrosion and consequently the corrosion life is short, the invention provides the alloy powder for laser cladding repair of the mining hydraulic stand column middle cylinder, which is high in pitting corrosion resistance and long in service life, and the repair method. The alloy powder comprises 15.0-17.0 wt% of Cr, 1.5-2.0 wt% of Ni, 1.5-2.0 wt% of Co, 0.8-1.2 wt% of Mo, 0.0-0.4 wt% of Mn, 0.1-0.2 wt% of Nb, 0.07-0.14 wt% of C, 0.06-0.12 wt% of N, 0.03-0.06 wt% of Ce, 0.6-1.0 wt% of B, 0.8-1.2 wt% of Si, and the balance Fe. The addition of the Co element can expand the austenite region, so that the toughness is increased, the wear resistance is improved, the pitting corrosion resistance of a cladding layer is further improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to an alloy powder for laser processing and repair and a repair method, in particular to an alloy powder and a repair method for laser cladding and repair of a middle cylinder of a mine hydraulic column. Background technique [0002] The traditional middle cylinder of mining hydraulic column is often repaired by electroplating hard chrome. This repair process mainly has the following three deficiencies: [0003] First, it pollutes the environment seriously and runs counter to the direction of social development; [0004] Second, the bonding force between the chrome plating layer and the base material is weak, and it is easy to "peel and pack"; [0005] Third, the porosity of the chromium plating layer cannot be effectively controlled, resulting in a decrease in corrosion resistance. [0006] With the development of high-power semiconductor lasers and the maturity of their technology, the laser cladding technology with its outsta...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/44C22C38/48C22C38/52C22C38/54C23C24/10
CPCC22C38/52C22C38/44C22C38/04C22C38/02C22C38/48C22C38/54C22C38/001C22C38/005C23C24/106
Inventor 王晓飚曹伟业
Owner XIAN BESAME LASER TECH CO LTD
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