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Method for preparing wear-resistance toughening coating layer on surface of high-manganese steel

A high-manganese steel and coating technology, applied in the direction of coating, metal material coating process, etc., can solve the problems of difficult promotion, high cost, poor impact resistance, etc., to save materials and energy, low equipment cost, high The effect of impact toughness

Active Publication Date: 2018-03-20
梧州啟润机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metal-based wear-resistant coating reinforced by high-hardness ceramic particles has the advantages of high hardness and good wear resistance, but its impact resistance is poor, and it is difficult to protect the substrate under complex working conditions such as impact and abrasive wear coupling.
Although nickel and cobalt-based coatings have improved impact resistance compared with iron-based coatings, they are more expensive and difficult to promote

Method used

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  • Method for preparing wear-resistance toughening coating layer on surface of high-manganese steel
  • Method for preparing wear-resistance toughening coating layer on surface of high-manganese steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Mn13 high manganese steel and Fe-Ni base alloy powder are processed according to the following steps:

[0035]S1: First sand the oxide layer on the surface of the high manganese steel substrate, then use alcohol acetone to clean the oil on the surface, and preheat at 300°C before plasma cladding.

[0036] S2: Sieve the Fe-Ni-based alloy to obtain a powder with a size distribution of 180-300 mesh. Then, put the sieved powder into a vacuum drying oven, adjust the temperature to 100° C., and keep it warm for 2 hours.

[0037] S3: Install the Mn13 high manganese steel and the Fe-Ni base alloy powder into the machine respectively for cladding. Cladding process parameters are: current 140A, nozzle height 10mm, powder feeding speed 180g / min, powder feeding gas flow 4L / min, large ion gas flow 4L / min, small ion gas flow 4L / min, scan rate 160mm / min, A coating with a width of about 10 mm was obtained.

[0038] S4: After cooling, put the sample obtained by cladding into a high-t...

Embodiment 2

[0040] Mn14 high manganese steel and Fe-Ni base alloy powder are processed according to the following steps:

[0041] S1: First sand the oxide layer on the surface of the high manganese steel substrate, then use alcohol acetone to clean the oil on the surface, and preheat at 300°C before plasma cladding.

[0042] S2: Sieve the Fe-Ni-based alloy to obtain a powder with a size distribution of 180-300 mesh. Then, put the sieved powder into a vacuum drying oven, adjust the temperature to 100° C., and keep it warm for 2 hours.

[0043] S3: Install the Mn14 high manganese steel and the Fe-Ni based alloy powder into the machine respectively for cladding. Cladding process parameters are: current 160A, nozzle height 12mm, powder feeding speed 220g / min, powder feeding gas flow 4L / min, large ion gas flow 6L / min, small ion gas flow 4L / min, scan rate 180mm / min, A coating with a width of about 10 mm was obtained.

[0044] S4: After cooling, put the sample obtained by cladding into a high...

Embodiment 3

[0046] Mn15 high manganese steel and Fe-Ni base alloy powder are processed according to the following steps:

[0047] S1: First sand the oxide layer on the surface of the high manganese steel substrate, then use alcohol acetone to clean the oil on the surface, and preheat at 300°C before plasma cladding.

[0048] S2: Sieve the Fe-Ni-based alloy to obtain a powder with a size distribution of 180-300 mesh. Then, put the sieved powder into a vacuum drying oven, adjust the temperature to 100° C., and keep it warm for 2 hours.

[0049] S3: Install the Mn15 high manganese steel and the Fe-Ni base alloy powder into the machine respectively for cladding. Cladding process parameters are: current 150A, nozzle height 13mm, powder feeding speed 200g / min, powder feeding gas flow 5L / min, large ion gas flow 5L / min, small ion gas flow 5L / min, scan rate 170mm / min, A coating with a width of about 9 mm was obtained.

[0050] S4: After cooling, put the sample obtained by cladding into a high-t...

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Abstract

The invention discloses a method for preparing a wear-resistance toughening coating layer on a surface of high-manganese steel. The method is characterized by comprising the steps of: (S1) pretreatment of a basal body before cladding, (S2) pretreatment of powder before cladding, (S3) cladding, and (S4) heat treatment after cladding. A plasma cladding technology, solid solution treatment and a coating layer surface aging process are adopted to prepare the Fe-Ni base alloy coating layer with high hardness, high wear resistance and high impact toughness; the surface hardness and the wear resistance of the basal body material are improved; the problem of easy cracking of a traditional hard particle reinforcing metal base wear-resistance coating layer under such conditions as medium and high stress is solved; and the prepared coating layer is excellent in metallurgical bonding with the basal body material, so that the comprehensive performance of the coating layer is greatly improved, the basal body material is protected more sufficiently, the service life of the basal body material is prolonged, and the application prospect is broad.

Description

technical field [0001] The invention relates to a method for treating the surface of high manganese steel, in particular to a method for preparing a wear-resistant and toughening coating on the surface of high manganese steel. Background technique [0002] Plasma cladding, also known as plasma spray welding, is a high-energy beam surface modification technology that uses high heat generated by plasma beams to clad alloy powder on the surface of the base metal. Plasma cladding refers to the formation of a non-transferred arc circuit with tungsten as the negative pole and the cladding cavity as the positive pole. Rare gas (argon gas) is fed into the cavity at a uniform speed, and some electrons of some atoms in the gas molecules in the cavity are broken down by current breakdown. The plasma is excited to form a non-transfer arc (small arc) between the nozzle and the tungsten electrode; then the workpiece is connected to the positive electrode and the tungsten electrode to form...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/08C22C38/10C22C38/12C22C38/02C22C38/04C22C38/14C22C38/06C21D1/78
CPCC21D1/78C22C38/02C22C38/04C22C38/06C22C38/105C22C38/12C22C38/14C23C24/106
Inventor 万俊胡永俊
Owner 梧州啟润机械有限公司
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