Iron-based alloy powder for laser cladding, and laser cladding method

An iron-based alloy and laser cladding technology, which is applied in the coating process and coating of metal materials, can solve the problems of high cost, high Cr content, hardness, wear resistance and corrosion resistance, and general welding performance, and achieve improvement Strong toughness, improved dislocation density, and good machinability

Pending Publication Date: 2020-11-17
陕西陕北矿业有限责任公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of Cr contained in the iron-based powder determines the cost. The existing commonly used iron-based powder has a high Cr content and

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] In this example 1, laser cladding is performed on the surface of the hydraulic support cylinder in a high-humidity environment, and the composition mass percentage of the iron-based alloy powder used is: C: 0.18%; Si: 1.055%; Mn: 0.2045% ; Cr: 16.242%; Ni: 2.865%; Mo: 0.395%; V: 0.075%; Nb: 0.206%;

[0102] In this embodiment, the surface cladding treatment method for this type of hydraulic support cylinder specifically includes the following steps:

[0103] 1. Surface treatment: Clean, derust, degrease and decontaminate the surface of the hydraulic support cylinder;

[0104] 2. Powder drying: Before cladding, take the above-mentioned iron-based alloy powder and heat it in a heating furnace at a temperature of 200°C.

[0105] 3. Laser cladding: Laser cladding is carried out by using semiconductor lasers and the above-mentioned iron-based alloy powder. The cladding parameters are: laser power 4000W, light board length 15mm, width 3mm, cladding speed 500mm / min, lap rate 5...

Embodiment 2

[0110] In this embodiment 2, laser cladding is performed on the surface of the hydraulic support cylinder in a high-strength friction environment, and the composition mass percentage of the iron-based alloy powder used is C: 0.15%; Si: 0.95%; Mn: 0.31%; Cr: 14.61%; Ni: 2.51%; Mo: 0.3%; V: 0.08%; Nb: 0.2%; N: 0.08%; Cu: 0.05%; B: 0.4%; the rest is Fe.

[0111] In this embodiment, the surface cladding treatment method for this type of hydraulic support cylinder specifically includes the following steps:

[0112] 1. Surface treatment: Clean, derust, degrease and decontaminate the surface of the hydraulic support cylinder;

[0113] 2. Powder drying: Before cladding, take the above-mentioned iron-based alloy powder and heat it in a heating furnace at a temperature of 200°C.

[0114] 3. Laser cladding: Laser cladding is carried out by using semiconductor lasers and the above-mentioned iron-based alloy powder. The cladding parameters are: laser power 4000W, bare board length 15mm, ...

Embodiment 3

[0119] In Example 2, laser cladding is performed on the surface of the deep well hydraulic support cylinder, and the composition mass percentage of the iron-based alloy powder used is: C: 0.1%; Si: 1.07%; Mn: 0.24%; Cr: 16.13%; Ni: 3.03%; Mo: 0.41%; V: 0.12%; Nb: 0.23%; N: 0.08%; Cu: 0.04%; B: 0.4%; the rest is Fe.

[0120] In this embodiment, the surface cladding treatment method for this type of hydraulic support cylinder specifically includes the following steps:

[0121] 1. Surface treatment: Clean, derust, degrease and decontaminate the surface of the hydraulic support cylinder;

[0122] 2. Powder drying: Before cladding, take the above-mentioned iron-based alloy powder and heat it in a heating furnace at a temperature of 200°C.

[0123] 3. Laser cladding: Laser cladding is carried out by using semiconductor lasers and the above-mentioned iron-based alloy powder. The cladding parameters are: laser power 4000W, bare board length 15mm, width 3mm, cladding speed 500mm / min,...

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Abstract

The invention discloses iron-based alloy powder for laser cladding, and a laser cladding method. The iron-based alloy powder is composed of the following components in percentage by mass: 0.1%-0.18% of C, 0.95%-1.07% of Si, 0.2045%-0.31% of Mn, 14.61%-16.242% of Cr, 2.51%-3.03% of Ni, 0.3%-0.41% of Mo, 0.075%-0.12% of V, 0.2%-0.23% of Nb, 0.045%-0.08% of N, 0.04%-0.08% of Cu, 0.4%-0.4998% of B, and the balance Fe. The laser cladding method is carried out on the basis of the iron-based alloy powder. According to the invention, through formula proportion optimization, reduction for the content of Cr element component in the iron-based alloy powder is realized while the hardness, wear resistance, corrosion resistance and welding performance of the iron-based alloy powder are not sacrificed atall and even improved, and then the cost is effectively reduced; and meanwhile, the hardness, wear resistance, corrosion resistance and welding performance of the iron-based alloy powder are improved, and the iron-based alloy powder has wide application and popularization prospects.

Description

technical field [0001] The invention belongs to the field of laser cladding, in particular to an iron-based alloy powder for laser cladding and a laser cladding method. Background technique [0002] Laser cladding technology is also called laser remanufacturing technology, laser repair technology, a new surface modification technology. It forms a metallurgical cladding layer on the surface of the base layer by adding cladding materials on the surface of the base material and using a high-energy-density laser beam to fuse it together with the thin layer on the surface of the base material. Laser cladding technology is an emerging technology that uses laser and nano-materials to strengthen the alloy of various parts. After treatment, the hardness and wear resistance of the surface can be significantly improved, and the service life of the parts can be extended. [0003] The hydraulic cylinder is the main component of the hydraulic power source in the coal mine. Due to the lon...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C38/02C22C38/04C22C38/42C22C38/44C22C38/46C22C38/48C22C38/54B22F1/00
CPCB22F1/0003C23C24/103C22C38/02C22C38/04C22C38/44C22C38/46C22C38/48C22C38/42C22C38/54C22C38/001
Inventor 吴群英郭佐宁乔少波习晓马晓燕王宏科夏护国李玉良项榆张飘飘
Owner 陕西陕北矿业有限责任公司
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