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A kind of coating preparation method of zrc-sic/nicrmov hot work die steel

A technology of hot work die steel and coating, applied in coating, metal material coating process, melt spraying and other directions, can solve the problems of inability to meet the service life of hot work die steel, poor forging process production conditions, etc. Small size, antioxidant and tissue stability improvement, high tissue stability effect

Active Publication Date: 2018-08-21
福建省诺希科技园发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the very harsh production conditions of the forging process, the development of high-performance hot work die steel can no longer meet the needs of further improving the service life of hot work die steel

Method used

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  • A kind of coating preparation method of zrc-sic/nicrmov hot work die steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, using 35%ZrC-SiC+65%NiCrMoV mixed nanometer laser-assisted spraying powder, laser-assisted thermal spraying spraying parameters are: current 400A; voltage 50V; main gas Ar 45L / Min; secondary gas H 2 1.1L / Min; powder feeding speed 31g / Min; spraying distance 70 mm; spraying speed 115 mm / s to prepare ZrC-SiC / NiCrMoV hot work die steel material coating. Erosion wear resistance of ZrC-SiC / NiCrMoV hot work die steel material coating is 5.8×10-3-6.2×10-3mm 3 / g; coating / substrate interface bonding strength is 40Mpa-50Mpa.

Embodiment 2

[0023] Example 2, using 32%ZrC-SiC+68%NiCrMoV mixed nanometer laser-assisted spraying powder, laser-assisted thermal spraying spraying parameters are: current 400A; voltage 50V; main gas Ar 45L / Min; secondary gas H 2 1.1L / Min; powder feeding speed 31g / Min; spraying distance 70 mm; spraying speed 115 mm / s to prepare ZrC-SiC / NiCrMoV hot work die steel material coating. Erosion and wear resistance of ZrC-SiC / NiCrMoV hot work die steel material coating is 5.9×10-3-6.3×10-3mm 3 / g; coating / substrate interface bonding strength is 40Mpa-52Mpa.

Embodiment 3

[0024]Example 3, using 36%ZrC-SiC+62%NiCrMoV mixed nanometer laser-assisted spraying powder, laser-assisted thermal spraying spraying parameters are: current 400A; voltage 50V; main gas Ar 45L / Min; secondary gas H 2 1.1L / Min; powder feeding speed 31g / Min; spraying distance 70 mm; spraying speed 115 mm / s to prepare ZrC-SiC / NiCrMoV hot work die steel material coating. Erosion and wear resistance of ZrC-SiC / NiCrMoV hot work die steel material coating is 5.9×10-3-6.4×10-3mm 3 / g; coating / substrate interface bonding strength is 37Mpa-48Mpa.

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Abstract

The invention belongs to the surface engineering technology, in particular to a ZrC-SiC / NiCrMoV hot work die steel coating preparing method. On the basis of high hardness, abrasion resistance, corrosion resistance and structure stability of silicon carbide-zirconium carbide materials, good self-fluxing nature and wettability of the NiCrMoV alloy and the characteristic of the laser auxiliary thermal spraying technology, silicon carbide-zirconium carbide particles are prepared on the surface of a hot work die steel base material to enhance a hot work die steel material coating, and fatigue resistance, oxidation resistance, corrosion resistance, abrasion resistance and structure stability of the hot work die steel are improved.

Description

technical field [0001] The invention belongs to the surface engineering technology, in particular to a method for preparing ZrC-SiC / NiCrMoV hot work die steel coating. Background technique [0002] The forging process is an important link in industrial production. At present, the service life of the forging die accounts for 20% of the cost of the entire forging product. The hot work die steel is used in a large amount as a forging die material. The hardness requirement of the hot work die steel is appropriate. Focus on red hardness, thermal conductivity, wear resistance. Therefore, the carbon content is low, and the alloying elements are mainly to increase hardenability, wear resistance and red hardness. Steel for hot work die steel is an alloy steel mainly composed of metal elements such as Cr, Ni, Mo, V, W and Ti. Hot work die steel should have good mechanical properties, good fatigue resistance, oxidation resistance, corrosion resistance, wear resistance and machinabili...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/06C23C4/134C23C4/02
CPCC23C4/02C23C4/06
Inventor 徐淑波鲁人瑜张小东
Owner 福建省诺希科技园发展有限公司