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An iron-based alloy powder for laser cladding on the outer surface of a hydraulic support live column

A technology of laser cladding and hydraulic support, applied in metal material coating process, coating and other directions, can solve the problem that the cladding layer cannot eliminate the aging phenomenon, the working cycle of the hydraulic support movable column is short, the cladding layer is uneven and not dense, etc. problems, to achieve the effect of reducing porosity and pores, uniform and dense organization, and reducing the tendency of intergranular corrosion

Active Publication Date: 2022-06-21
河南爱钢矿业科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an iron-based alloy powder for laser cladding on the outer surface of a live column of a hydraulic support, which solves the following technical problems: ①The hardness of the cladding layer is not high and there are few types of hard phases; ②The cladding layer is not uniform and dense; ③The heat-affected zone on the parent body caused by the large cladding layer thickness; ④The cladding layer cannot eliminate the aging phenomenon; ⑤The repaired hydraulic support live column has a short working cycle

Method used

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  • An iron-based alloy powder for laser cladding on the outer surface of a hydraulic support live column

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Effect test

Embodiment 1

[0021] An iron-based alloy powder for laser cladding on the outer surface of a hydraulic support live column, the chemical composition and mass percentage are: 3.0% beryllium, 2.0% neodymium, 0.08% nitrogen, 1.5% cobalt, 18.0% chromium, 0.05% carbon, and 0.16% molybdenum %, boron 1.8%, yttrium 1.0%, nickel 2.8%, silicon 0.1%-0.3%, niobium 1.2%, titanium 1.6%, and the balance is iron.

[0022] The particle size of the alloy powder is 80 μm-120 μm.

Embodiment 2

[0024] An iron-based alloy powder for laser cladding on the outer surface of a hydraulic support live column, the chemical composition and mass percentage are: beryllium 6.0%, neodymium 4.0%, nitrogen 0.12%, cobalt 3.5%, chromium 22.0%, carbon 0.09%, molybdenum 0.30% %, boron 3.2%, yttrium 2.2%, nickel 4.0%, silicon 0.3%, niobium 2.6%, titanium 2.2%, and the balance is iron.

[0025] The particle size of the alloy powder is 80 μm-120 μm.

Embodiment 3

[0027] An iron-based alloy powder for laser cladding on the outer surface of a hydraulic support live column, the chemical composition and mass percentage are: beryllium 4.5%, neodymium 3.0%, nitrogen 0.10%, cobalt 2.5%, chromium 20.0%, carbon 0.07%, molybdenum 0.23% %, boron 2.5%, yttrium 1.6%, nickel 3.4%, silicon 0.2%, niobium 1.9%, titanium 1.9%, and the balance is iron.

[0028]The particle size of the alloy powder is 80 μm-120 μm.

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Abstract

The invention belongs to the technical field of laser cladding surface modification, in particular to an iron-based alloy powder for laser cladding on the outer surface of a live column of a hydraulic support. The chemical composition of the alloy powder is: beryllium 3.0%‑6.0%, neodymium 2.0%‑4.0%, nitrogen 0.08%‑0.12%, cobalt 1.5%‑3.5%, chromium 18.0%‑22.0%, carbon 0.05%‑0.09%, Molybdenum 0.16%‑0.30%, Boron 1.8%‑3.2%, Yttrium 1.0%‑2.2%, Nickel 2.8%‑4.0%, Silicon 0.1%‑0.3%, Niobium 1.2%‑2.6%, Titanium 1.6%‑2.2%, remainder The amount is iron. The cladding layer obtained by the present invention has high hardness and many types of hard phases, uniform and compact structure, no pitting corrosion and other phenomena, the mother body is less affected by heat, and the corrosion resistance time of the AASS salt spray test is greater than 3600h, which effectively prolongs the live column of the hydraulic support Use cycle.

Description

technical field [0001] The invention belongs to the technical field of laser cladding surface modification, in particular to an iron-based alloy powder for laser cladding on the outer surface of a live column of a hydraulic support. Background technique [0002] The hydraulic support is the core equipment of the fully mechanized coal mining face, which can safely and reliably support and control the entire mining face, isolate the mining area, and effectively ensure the safe and smooth progress of the mining work. During the working process, the live column of the hydraulic support 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 And other corrosive media, accelerate the corrosion of the outer surface of the hydraulic support live column, which will destroy the sealing effect of the live column, causing problems such as loss of pressure and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/44C22C38/48C22C38/50C22C38/52C22C38/54C22C30/00C22C45/02C23C24/10
CPCC22C38/002C22C38/005C22C38/001C22C38/52C22C38/44C22C38/54C22C38/02C22C38/48C22C38/50C22C30/00C22C45/02C23C24/103
Inventor 黎文强马宗彬王宏生姜万明陈涛王腾飞韩光普杨道峰朱明坤张亚南祁圣凯王笑生韩辉辉
Owner 河南爱钢矿业科技有限公司
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