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Laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and preparation method thereof

A technology of laser cladding and synthesizing ceramics, applied in coating, metal processing equipment, metal material coating technology and other directions, can solve problems such as strengthening, and achieve the effect of convenient operation, simple preparation process and production equipment, and easy automation

Active Publication Date: 2019-12-13
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved in the present invention is: aiming at the shortcomings of existing laser cladding cobalt-based alloy surface strengthening, a powder composition and preparation method of laser cladding synthetic ceramic phase reinforced Co-based cladding layer are proposed, which is used to solve the problem of automobile Strengthening of the mold surface

Method used

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  • Laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and preparation method thereof

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Embodiment 1

[0026] The laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and its preparation method are characterized by comprising the following steps:

[0027] (1) Substrate pretreatment: Derust the surface of the processed Cr12MoV steel substrate, and polish it with an angle grinder to obtain a smooth and smooth surface;

[0028] (2) Preparation of alloy combination powder: uniformly mix the alloy combination powder in proportion, the alloy combination powder is made of cobalt-based alloy powder (the chemical composition and mass fraction of cobalt-based alloy powder are 1.01%C, 30.15%Cr, 1.02%Si, 5.04 %W, 3.03%Fe, 1.38%Mo, 2.09%Ni, 0.44%Mn, Co balance), B 4 C powder (B 4 The chemical composition and mass fraction of C powder are 21.09% C, 0.06% Fe, 0.19% O, 0.13% free carbon, 1.25% impurities, B balance), Cr 3 C 2 Powder (Cr 3 C 2 The chemical composition and mass fraction of the powder are 13.45% C, 0.008% Si, 0.05% Fe, 0.003% Mo, 0.002% Ni, 0.006% Co...

Embodiment 2

[0031] The laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and its preparation method are characterized by comprising the following steps:

[0032] (1) Substrate pretreatment: Derust the surface of the processed Cr12MoV steel substrate, and polish it with an angle grinder to obtain a smooth and smooth surface;

[0033] (2) Preparation of alloy combination powder: uniformly mix the alloy combination powder in proportion. %W, 5.14%Fe, 1.17%Mo, 4.87%Ni, 0.30%Mn, Co balance), B 4 C powder (B 4 The chemical composition and mass fraction of C powder are 17.02% C, 0.08% Fe, 0.02% O, 0.17% free carbon, 1.09% impurities, B balance), Cr 3 C 2 Powder (Cr 3 C 2 The chemical composition and mass fraction of the powder are 12.81% C, 0.007% Si, 0.03% Fe, 0.009% Mo, 0.006% Ni, 0.001% Co, 0.21% free carbon, Cr balance) and binder, its mass The composition is: 86% cobalt-based alloy powder, 8% B 4 C powder, 2% Cr 3 C 2 Powder, 4% binder; firstly mix 200-23...

Embodiment 3

[0036] The laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and its preparation method are characterized by comprising the following steps:

[0037] (1) Substrate pretreatment: Derust the surface of the processed Cr12MoV steel substrate, and polish it with an angle grinder to obtain a smooth and smooth surface;

[0038] (2) Preparation of alloy combination powder: uniformly mix the alloy combination powder in proportion, the alloy combination powder is made of cobalt-based alloy powder (the chemical composition and mass fraction of cobalt-based alloy powder are 1.09%C, 29.58%Cr, 1.06%Si, 4.69% %W, 3.10%Fe, 1.24%Mo, 3.61%Ni, 0.35%Mn, Co balance), B 4 C powder (B 4The chemical composition and mass fraction of C powder are 19.08% C, 0.06% Fe, 0.32% O, 0.13% free carbon, 0.92% impurities, B balance), Cr 3 C 2 Powder (Cr 3 C 2 The chemical composition and mass fraction of the powder are 12.96% C, 0.005% Si, 0.04% Fe, 0.006% Mo, 0.003% Ni, 0.007% Co...

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Abstract

The invention relates to a laser cladding technology, in particular to a laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and a preparation method thereof. Laser claddingceramic phase reinforced alloy powder consists of cobalt-based alloy powder, boride, carbide hard particles and a binder, specifically, the alloy composite powder is prepared from, by mass: 86-87% ofthe cobalt-based alloy powder, 6-8% of B4C powder, 1-2% of Cr3C2 powder, and 4-5% of the binder. The laser cladding wear-resistant cladding not only has high hardness and toughness, but also has goodwear resistance, and is particularly suitable for laser cladding of parts with high impact and wear-resistant working conditions and improvement and reinforcement of automobile covering part molds.

Description

technical field [0001] The invention relates to laser cladding technology, in particular to a laser cladding synthetic ceramic phase reinforced cobalt-based cladding layer and a preparation method thereof. Background technique [0002] In the process of automobile production, the wear of the surface of the cold stamping die of the automobile panel will lead to a decline in the qualified rate of the quality of the automobile panel, and even lead to the stagnation of the production line, causing huge losses to the enterprise. Die wear is caused by the friction and extrusion of the convex and concave dies during long-term work, mostly at the mold chamfers, stretch ribs, stretch grooves and surface pits. At present, the method to solve this problem is generally to replace the mold as a whole, which not only wastes production materials, but also reduces work efficiency. Therefore, the hardness and wear resistance of die steel must be improved. Researchers have thus applied vari...

Claims

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Application Information

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IPC IPC(8): C23C24/10C22C19/07C22C32/00B22F9/04B22F1/00
CPCC23C24/103C22C19/07C22C32/0052B22F9/04B22F2009/043B22F1/10
Inventor 孙宇凡符寒光孙淑婷林健平学龙李辉
Owner BEIJING UNIV OF TECH
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