Silicide particle enhanced laser cladding nickel base alloy powder and preparation method thereof

A technology of matrix alloy powder and particle enhancement, applied in the direction of metal material coating process, coating, etc., can solve the problem that no special combination powder for laser cladding has been seen, storage, transportation and use are prone to segregation, and cannot be supplied to the commercial market. and other problems, to achieve the effects of excellent laser cladding process performance, reduced laser cladding cost, and high hardness

Inactive Publication Date: 2013-07-24
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 silicide particle-enhanced laser cladding nickel-based alloy powder and a preparation method thereof. The silicide particle-enhanced laser cladding nickel-based alloy powder is composed of a matrix alloy powder, silicide particles and a binder, and the ratio thereof is: 60% matrix alloy powder, 37% SiC, and 3% phenolic resin binder are prepared into combined powder; wherein the chemical composition and mass percentage of the matrix alloy are;

[0049] 0.5%C, 2%Si, 1.5%B, 14%Cr, 6%Cu, 0.5%Sn, 13%Fe, 0.1%MgO, 0.5%CaF 2 , 0.2% CeO 2 , 0.2%Y 3 o 2 , 0.2% La 2 o 3 , Ni balance.

[0050] Its manufacturing process steps:

[0051] Preparation of matrix alloy powder→adding silicide 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]...

Embodiment 2

[0071] A silicide particle-enhanced laser cladding nickel-based alloy powder and a preparation method thereof. The silicide particle-enhanced laser cladding nickel-based alloy powder is composed of a matrix alloy powder, silicide particles and a binder, and the ratio thereof is: 68% matrix alloy powder, 30% Si 3 N 4 , 2% epoxy resin binder is prepared into combined powder; wherein the chemical composition and mass percentage of the matrix alloy are;

[0072] 0.6%C, 3%Si, 2.5%B, 16%Cr, 7%Cu, 1%Sn, 15%Fe, 0.15%MgO, 0.9%CaF 2 , 0.25% CeO 2 , 0.25%Y 3 o 2 , 0.25% La 2 o 3 , Ni balance.

[0073] (2) Add silicide particles

[0074] Select the commercially available Si with a particle size range of -300 mesh 3 N 4 Powder as 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] The prepared matrix alloy powder and Si 3 N 4 Af...

Embodiment 3

[0081] A silicide particle-enhanced laser cladding nickel-based alloy powder and a preparation method thereof. The silicide particle-enhanced laser cladding nickel-based alloy powder is composed of a matrix alloy powder, silicide particles and a binder, and the ratio thereof is: 68% matrix alloy powder, 30% MoSi 2 Powder, 2% epoxy resin binder is prepared into composite powder; Wherein the chemical composition of matrix alloy and its mass percent are;

[0082] 0.4%C, 2.8%Si, 2.0%B, 18%Cr, 8%Cu, 0.7%Sn, 10%Fe, 0.2%MgO, 1.5%CaF 2 , 0.3% CeO 2 , 0.3%Y 3 o 2 , 0.3% La 2 o 3 , Ni balance.

[0083] (2) Add silicide particles

[0084] Select the commercially available MoSi with a particle size range of -200 mesh 2 powder as reinforcing particles;

[0085] (3) Add binder

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

[0087] (4) Stirring ball mill

[0088] The prepared matrix alloy powder and MoSi 2 After the powder and binder are configured accor...

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Abstract

The invention relates to silicide particle enhanced laser cladding nickel base alloy powder and a preparation method thereof. The silicide particle enhanced laser cladding nickel base alloy powder is characterized by comprising matrix alloy powder, silicide hard particles and a binder, wherein 50-98% of the matrix alloy powder, 1-45% of SiC or combination mixture powder comprising one or more than two materials selected from Si3N4, MoSi2 and CoSi2, and 1-5% of the binder are prepared into the combination powder. The preparation process steps comprise: preparing matrix alloy powder, adding silicide particles, adding a binder, carrying out stirring-ball milling, combining the powder, drying, crushing and screening. The silicide particle enhanced laser cladding nickel base alloy powder has characteristics of high hardness, high toughness, excellent wear resistance, and excellent corrosion resistance, and is particularly suitable for laser cladding of operation condition parts with characteristics of high impact and high wear resistance, wherein segregation generated due to high difference among specific gravities of various components during processes of storage, transportation and use can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of nickel-based alloys, and relates to a laser cladding alloy powder and a preparation method thereof, in particular to a silicide particle-enhanced laser cladding nickel-base alloy powder and a preparation method thereof. The silicide particles Enhanced laser cladding nickel-based alloy powder is suitable for laser cladding parts with high impact and 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. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C32/00C22C19/03C22C1/10C23C24/10
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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