Alloy powder for laser cladding and method for laser cladding alloy powder

A technology of laser cladding and alloy powder, applied in the field of laser cladding powder, alloy powder materials for laser cladding, can solve the problems of small heat input and distortion, low coating dilution rate, etc., and achieve good coating formation, Improved corrosion resistance, good metallurgical bonding effect

Inactive Publication Date: 2015-09-02
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] 2. Small heat input and dis

Method used

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  • Alloy powder for laser cladding and method for laser cladding alloy powder

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Experimental program
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Embodiment 1

[0024] The alloy powder for laser cladding of the present embodiment is composed of 30% TiC, 2% free C and 68% Ni60 by mass percentage, wherein Ni60 is composed of 1% C, 14% Cr, 3% Ni60 by mass fraction B, composed of 4% Si, 14% Fe and 64% Ni.

Embodiment 2

[0026] The laser cladding alloy powder of this embodiment is composed of 28% TiC, 1% free C and 71% Ni60 by mass percentage, wherein Ni60 is composed of 1% C, 15% Cr, and 4.5% B by mass fraction , 4.5% Si, 12% Fe and 63% Ni.

Embodiment 3

[0028] The laser cladding alloy powder of this embodiment is composed of 25% TiC, 2% free C and 73% Ni60 by mass percentage, wherein Ni60 is composed of 2% C, 16% Cr, and 3% B by mass fraction , 3% Si, 13% Fe and 63% Ni.

[0029] The elements added in the alloy powder for laser cladding have their own effects. Ni can dissolve a lot of alloying elements, and can maintain good structural stability. It can form coherent and ordered intermetallic compounds, making the melting The coating has higher high temperature strength; Cr element has solid solution strengthening and passivation effect, which can improve corrosion resistance and high temperature oxidation resistance, and excess Cr is easy to form hard phase with C and B, which can improve cladding The hardness and wear resistance of the layer; a small amount of Si and B elements have the functions of deoxidation, reduction and slagging, and have a hardening and strengthening effect on the cladding layer; TiC is the main hard ...

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Abstract

The invention relates to the technical field of laser surface treatment and particularly discloses alloy powder for laser cladding and a method for laser cladding the alloy powder. The alloy powder for laser cladding comprises the following components in percentage by weight: 23-30% of TiC, 1-2% of free C and the balance of Ni 60. The alloy powder for laser cladding contains higher contents of C, Si, B and the like, so that a cladding layer has high temperature resistance, high abrasion resistance, high hardness, compact texture, refined grain and fewer pores and cracks; with adoption of the method for laser cladding the alloy powder, the working stability of a workpiece can be greatly improved, and the production cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of laser surface strengthening, in particular to an alloy powder material for laser cladding and a method for laser cladding the powder. Background technique [0002] Laser cladding is an advanced surface modification technology. It uses high-energy laser beams to melt the metal-based materials added on the surface and the thin layer of the substrate to form a special function and low dilution rate and combine with the substrate. Metallurgically bonded coatings to obtain a technology with excellent properties such as wear resistance, corrosion resistance, oxidation resistance and high temperature resistance on the surface of metal workpieces. Laser cladding can prepare high-performance coatings on low-cost materials, so it can reduce energy consumption and save costs. Laser cladding forms a metallurgical bond. Compared with the conventional surface coating strengthening process, laser cladding has the follo...

Claims

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Application Information

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IPC IPC(8): C23C24/10B22F1/00C22C19/03
Inventor 单忠德孙福臻刘阳刘丰王化乔
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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