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Micro-nano silicide particulate reinforced laser cladding alloy powder and preparing method thereof

A technology of laser cladding and particle enhancement, which is applied in the field of micronano silicide particle enhanced laser cladding alloy powder and its preparation, and laser cladding of high wear-resistant parts, which can solve the problem of segregation in storage, transportation and use , There are no problems such as laser cladding special combination powder, cladding layer structure and performance unevenness, etc., to achieve the effect of excellent laser cladding process performance, high hardness, and grain refinement

Inactive Publication Date: 2014-01-22
江苏盛伟模具材料有限公司
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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 cannot be carried out, and there is no commercial sale of micro-nano particle-enhanced laser cladding special powder 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

[0053] A micro-nano silicide particle-enhanced laser cladding alloy powder and a preparation method thereof. The micro-nano silicide particle-enhanced laser cladding alloy powder is composed of matrix alloy powder, micro-nano silicide hard particles and a binder. The ratio is: 60% matrix alloy powder, 37% micro-nano SiC, 3% phenolic resin binder to prepare combined powder, 3% phenolic resin binder to prepare combined powder; the chemical composition of the matrix alloy and Its mass percentage is;

[0054] 0.5%C, 2.0%Si, 2.5%B, 20%Cr, 9%Cu, 6%W, 6%Mo, 13%Fe, 0.1%MgO, 0.5%CaF 2 , 0.2% CeO 2 , 0.2%Y 3 o 2 , O.2% La 2 o 3 , Ni balance.

[0055] Its manufacturing process steps:

[0056] Preparation of matrix alloy powder→adding micro-nano silicide particles→adding binder→stirring ball milling→combining powder→drying→crushing→sieving; the specific process steps are as follows:

[0057] (1) Preparation of matrix alloy

[0058] The process flow of matrix alloy powder preparat...

Embodiment 2

[0076] A micro-nano silicide particle-enhanced laser cladding alloy powder and a preparation method thereof. The micro-nano silicide particle-enhanced laser cladding alloy powder is composed of matrix alloy powder, micro-nano silicide hard particles and a binder. The ratio is: 68% matrix alloy powder, 30% micro-nano 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;

[0077] 0.6%C, 3%Si, 3%B, 25%Cr, 10Cu%, 4%W, 8%Mo, 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.

[0078] (2) Add micronano silicide particles

[0079] Select the commercially available Si with a particle size range of -400 mesh 3 N 4 The powder is used as reinforced hard particles; the content of nanoparticles in the micro-nano particles is 20-30%;

[0080] (3) Add binder

[0081] Use thermosetting epoxy resin as binder, add methanol solvent to dissolve it into a resin...

Embodiment 3

[0086] A micro-nano silicide particle-enhanced laser cladding alloy powder and a preparation method thereof. The micro-nano silicide particle-enhanced laser cladding high-wear-resistant nickel-based alloy powder is composed of matrix alloy powder and micro-nano silicide hard particles and bonding Composed of additives, the ratio is: 68% matrix alloy powder, 30% micro-nano MoSi 2 Powder, 2% epoxy resin binder is prepared into composite powder; Wherein the chemical composition of matrix alloy and its mass percent are;

[0087] 0.6%C, 2.5%Si, 2.0%B, 27%Cr, 8%Cu, 5%W, 5%Mo, 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.

[0088] (2) Add silicide particles

[0089] Select the commercially available micro-nano MoSi with a particle size range of -200 mesh 2 Powder is used as reinforcing particles; the content of nanoparticles in micro-nano particles is 20-30%;

[0090] (3) Add binder

[0091] Water glass is used as binder, and methanol so...

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Abstract

The invention discloses micro-nano silicide particulate reinforced laser cladding alloy powder and a preparing method thereof. The micro-nano silicide particulate reinforced laser cladding alloy powder and the preparing method thereof are characterized in that the micro-nano silicide particulate reinforced laser cladding alloy powder is composed of matrix alloy powder, micro-nano silicide particles and binders. The alloy powder is prepared, by ratio, by 50-98% of matrix alloy powder, 1-45% of micro-nano SiC or micro-nano combined mixture powder of one or more of micro-nano Si3N4, micro-nano MoSi2 and micro-nano CoSi2. The preparing technological steps of the alloy powder include preparing the matrix alloy powder, adding the micro-nano silicide particles, adding the binders, stirring and ball grinding, combining the powder, drying, crushing and screening. The alloy powder for laser cladding is high in hardness and toughness, good in wear resistance and corrosion resistance, particularly suitable for laser cladding of working condition parts with high impact and high wear resistance and capable of effectively avoiding segregation caused by large specific gravity differences among all components in the storing, transporting and using process.

Description

technical field [0001] The invention belongs to the technical field of nickel-based alloys, and relates to a micro-nano laser cladding alloy powder and a preparation method thereof, in particular to a micro-nano silicide particle-enhanced laser cladding alloy powder and a preparation method thereof. The micro-nano silicide particles Enhanced laser cladding alloy powder is suitable 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 f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/08C23C24/10
Inventor 丁刚丁家伟耿德英张莹谢宗翰王爱华郭洪才印杰孙健张宁强颖怀郭长庆
Owner 江苏盛伟模具材料有限公司
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