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Preparing method and application of laser cladding precipitation-hardening stainless steel wear-resisting anti-corrosion coating

A laser cladding and precipitation hardening technology, which is applied in the field of metal surface treatment, can solve the problems of many influencing factors and troublesome methods, and achieve the effects of simple cladding process, improved strength and hardness, and a wide range of applications

Inactive Publication Date: 2017-08-18
国营芜湖机械厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, regardless of the adjustment of heat treatment temperature or surface treatment, its performance can only be changed conveniently, and the method is cumbersome, with many influencing factors, and it cannot be completely guaranteed to improve its strength and hardness.

Method used

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  • Preparing method and application of laser cladding precipitation-hardening stainless steel wear-resisting anti-corrosion coating
  • Preparing method and application of laser cladding precipitation-hardening stainless steel wear-resisting anti-corrosion coating
  • Preparing method and application of laser cladding precipitation-hardening stainless steel wear-resisting anti-corrosion coating

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Experimental program
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Effect test

Embodiment 1

[0033] The preparation method of laser cladding precipitation hardening stainless steel wear-resistant and corrosion-resistant coating comprises the following steps:

[0034] (1) Base material pretreatment: The base material 1Cr15Ni4Mo3N precipitation hardening stainless steel is made into a circular steel plate with a diameter of 12 cm and a height of 1 cm. First, it is vacuum quenched at 1050 ° C and kept for 40 min in an oil bath, and then ice-cooled at -70 ° C. Air cooling after heat preservation for 100min; then tempering at 350°C and heat preservation for 100-120min in air cooling, the matrix material structure after tempering is martensite and a small amount of carbide, preparing for subsequent laser cladding; among them, 1Cr15Ni4Mo3N precipitation hardening Stainless steel consists of the following components and weight percentage content: C 0.11wt%, Mn 0.5wt%, Mo 2.3wt%, Ni 4.0wt%, Cr14.0wt%, N 0.05wt%, Si not more than 0.7wt%, S Not more than 0.02wt%, P not more than...

Embodiment 2

[0039] The preparation method of laser cladding precipitation hardening stainless steel wear-resistant and corrosion-resistant coating comprises the following steps:

[0040] (1) Base material pretreatment: The base material 1Cr15Ni4Mo3N precipitation hardening stainless steel is made into a circular steel plate with a diameter of 12cm and a height of 1cm. First, it is vacuum quenched at 1070°C and kept warm for 40-60min, then in an oil bath, and then ice-cooled at -75°C After treatment and heat preservation for 120 minutes, air cooling; then tempering at 400°C and heat preservation for 120 minutes in air cooling, the matrix material structure after tempering is martensite and a small amount of carbides, preparing for subsequent laser cladding; among them, 1Cr15Ni4Mo3N precipitation hardening Stainless steel consists of the following components and weight percentages: C 0.16wt%, Mn 1.0wt%, Mo 2.3-2.8wt%, Ni 5.0wt%, Cr 15.5wt%, N 0.10wt%, Si not more than 0.5wt% , S is not more...

Embodiment 3

[0045] The preparation method of laser cladding precipitation hardening stainless steel wear-resistant and corrosion-resistant coating comprises the following steps:

[0046] (1) Base material pretreatment: The base material 1Cr15Ni4Mo3N precipitation hardening stainless steel is made into a circular steel plate with a diameter of 12 cm and a height of 1 cm. First, it is vacuum quenched at 1060 ° C and kept for 50 min in an oil bath, and then ice-cooled at -72 ° C. Air cooling after heat preservation for 110min; then tempering at 380°C and heat preservation for 110min in air cooling, the matrix material structure after tempering is martensite and a small amount of carbide, in preparation for subsequent laser cladding; among them, C 0.12wt%, Mn 0.7wt%, Mo 2.5wt%, Ni4.4wt%, Cr 14.5wt%, N 0.07wt%, Si not more than 0.5wt%, S not more than 0.01wt%, P not more than 0.02wt%, the balance is Fe .

[0047] (2) Cladding layer material selection: the cladding layer is selected from powde...

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Abstract

The invention discloses a preparing method and application of a laser cladding precipitation-hardening stainless steel wear-resisting anti-corrosion coating. A basis material is 1Cr15Ni4Mo3N precipitation-hardening stainless steel and comprises, by weight percentage, 0.11%-0.16% of C, 0.5%-1.0% of Mn, 2.3%-2.8% of Mo, 4.0%-5.0% of Ni, 14.0%-15.5% of Cr, 0.05%-0.10% of N, not larger than 0.7% of Si, not larger than 0.02% of S, not larger than 0.03% of P and the balance Fe; and a cladding layer material comprises, by weight percentage, 10.65%-12.50% of C, 2.36%-2.77% of Mo, 4.08%-4.79% of Ni, 11.18%-13.12% of Cr, 1.96%-6.02% of N, 0.23%-0.37% of Al, 0.16%-0.25% of Si, not larger than 0.05% of S, not larger than 0.05% of P and the balance Fe. A synchronous powder feeding manner is adopted for feeding cladding layer powder to the positions below laser beams through a powder feeder to be melted, the cladding layer powder solidifies on the base surface to form a cladding layer, and the laser cladding precipitation-hardening stainless steel wear-resisting anti-corrosion coating is used for rotor hubs of large business machines, air battle machines and helicopters in the field of spaceflight, aviation and ocean and is used for fasteners and force bearing parts with high wear resistant and corrosion resistant requirements.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a preparation method and application of a laser cladding precipitation hardening stainless steel wear-resistant and corrosion-resistant coating. Background technique [0002] Precipitation hardening stainless steel is a kind of steel developed after the Second World War, due to the rapid development of aerospace, the strength and hardness of traditional materials can no longer meet the required performance requirements. Among them, 1Cr15Ni4Mo3N precipitation hardening stainless steel is a ferromagnetic material, which has the advantages of high strength, corrosion resistance, oxidation resistance and weldability. It can be processed, cold deformed and welded in the austenite state, and then By improving the treatment and controlling the transformation and precipitation hardening of martensite, excellent strength, toughness and corrosion resistance are obtained, es...

Claims

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Application Information

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IPC IPC(8): C23C24/10C21D6/00C21D6/04C22C38/44C22C38/04C22C38/02C22C38/06C22C38/56
CPCC23C24/103C21D6/004C21D6/04C21D2211/001C21D2211/008C22C38/001C22C38/02C22C38/04C22C38/06C22C38/44C22C38/56
Inventor 张志强张保森程宗辉黄卫华阚艳陈海牛许宜军孙涛曹强曾晓利张小辉
Owner 国营芜湖机械厂
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