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High abrasion-proof laser cladding cobalt-base alloy powder and preparation method thereof

A base alloy powder, laser cladding technology, applied in the direction of metal material coating process, coating, etc., can solve the problem of easy segregation in storage, transportation and use, there is no special combination powder for laser cladding, and it cannot be commercialized in the market. Supply and other issues, to achieve the effects of excellent laser cladding process performance, reduced laser cladding cost, and high hardness

Inactive Publication Date: 2013-02-27
江苏新亚特钢锻造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The added hard particles are larger and different in density from the matrix metal, and the distribution of the particles in the cladding layer is often uneven, usually showing a gradient distribution; the wettability, stability, and expansion coefficient of the added particle material and the matrix and chemical reactivity all lead to the inhomogeneity of the structure and performance of the cladding layer
Moreover, the prepared combined powder is prone to segregation during storage, transportation and use due to the large difference in the specific gravity of each component.
Commercial market supply is not possible, and there is no commercial sale of special powder for particle-enhanced laser cladding in the market
Due to the above reasons, there is no special combination powder for laser cladding, which restricts the application of laser cladding in the field of high wear-resistant conditions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A laser cladding high wear-resistant cobalt-based alloy powder and a preparation method thereof. The laser cladding high wear-resistant cobalt-based alloy powder is composed of a matrix alloy powder, carbide hard particles and a binder, and the proportion thereof is: 60% matrix alloy powder, 37% WC, and 3% phenolic resin binder are prepared into combined powder; wherein the chemical composition and mass percentage of matrix alloy are;

[0049] 0.3%C, 4%Si, 2.5%B, 2.6%Cr, 1.5%W, 2.2%Mn, 0.3%Nb, 2.5%Ni, 13%Fe, 0.3%La 2 o 3 , 0.4% Y, Co balance.

[0050] Its manufacturing process steps:

[0051] Matrix alloy powder preparation→adding carbide particles→adding binder→stirring ball milling→combining powder→drying→crushing→sieving; the specific process steps are as follows:

[0052] (1) Preparation of matrix alloy

[0053] The process flow of matrix alloy powder preparation is: batching→smelting→atomization→drying→sieving;

[0054] Ingredients: raw materials are pure nick...

Embodiment 2

[0071] A laser cladding high-toughness wear-resistant cobalt-based alloy powder and a preparation method thereof. The laser-clad high-wear-resistant cobalt-based alloy powder is composed of matrix alloy powder, carbide hard particles and a binder, and its proportion is: : 68% matrix alloy powder, 30% TiC, 2% epoxy resin binder are prepared into combined powder; wherein the chemical composition and mass percentage of matrix alloy are;

[0072] 0.2%C, 5%Si, 3%B, 1.5%Cr, 2.0W, 2.5%Mn, 0.2%Nb, 3%Ni, 12%Fe, 0.2%La 2 o 3 , 0.5% Y, Co balance.

[0073] (2) Adding carbide particles

[0074] Select the commercially available WC powder with a particle size range of -300 mesh as the reinforced hard particles;

[0075] (3) Add binder

[0076] Use thermosetting epoxy resin as binder, add methanol solvent to dissolve it into a resin solution;

[0077] (4) Stirring ball mill

[0078] After the prepared matrix alloy powder, TiC powder and binder are configured according to the above rat...

Embodiment 3

[0081] A laser cladding high-toughness wear-resistant cobalt-based alloy powder and a preparation method thereof. The laser-clad high-wear-resistant cobalt-based alloy powder is composed of matrix alloy powder, carbide hard particles and a binder, and its proportion is: : 68% matrix alloy powder, 30% TiC, 2% epoxy resin binder are prepared into combined powder; wherein the chemical composition and mass percentage of matrix alloy are;

[0082] 0.4%C, 2.8%Si, 2.0%B, 3%Cr, 2.5%W, 1.8%Mn, 0.25%Nb, 2.0%Ni, 10%Fe, 0.25%La 2 o3 , 0.45% Y, Co balance.

[0083] (2) Adding carbide particles

[0084] Select the mixed body powder that particle size range is -200 order commercially available 50%WC and 50%TiC to form as strengthening hard particle;

[0085] (3) Add binder

[0086] Water glass is used as binder, and methanol solvent is added;

[0087] (4) Stirring ball mill

[0088] After the prepared matrix alloy powder, TiC powder and binder are configured according to the above ratio...

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Abstract

The invention relates to a high abrasion-proof laser cladding cobalt-base alloy powder and a preparation method of the alloy powder. The high abrasion-proof laser cladding cobalt-base alloy powder is characterized by comprising matrix alloy powder, hard carbide particles and a bonding agent; and the combined powder comprises 50-98% of matrix alloy powder, 1-45% of WC or TiC or mixed powder of WC and TiC, and 1-5% of bonding agent. The preparation method comprises the following steps of: preparing the matrix alloy powder, adding the carbide particles into the prepared matrix alloy powder, adding bonding agent into the mixture, stirring, ball milling, combining the powder, drying, crushing and screening. The high abrasion-proof laser cladding cobalt-base alloy powder not only is high in hardness and toughness, but also has excellent wear resistance and corrosion resistance, thus being especially suitable for laser cladding of parts with high impact resistance and high abrasion-proof property. Furthermore, the phenomenon of segregation caused by great differences among the specific gravities of all components in the processes of storage, transportation and using can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of cobalt-based alloys, and relates to a laser cladding alloy powder and a preparation method thereof, in particular to a laser cladding high wear-resistant cobalt-based alloy powder and a preparation method thereof. The high wear-resistant cobalt-based alloy powder is suitable for It is used for laser cladding parts with high wear resistance. Background technique [0002] In modern daily life and industrial production, wear and corrosion of metal materials will appear in various fields. It is one of the two main ways to damage mechanical parts and engineering components. Corrosion will lead to a large amount of consumption of mechanical parts, while wear It is one of the important reasons leading to the failure of mechanical parts. While they consume a lot of metal materials, they also waste a lot of resources, accounting for a very large proportion of economic losses. [0003] The failure of engineering ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C19/07C22C32/00C22C30/00B22F1/00B22F1/02
Inventor 丁刚丁家伟耿德英谢宗翰王爱华郭洪才印杰孙健唐华平
Owner 江苏新亚特钢锻造有限公司
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