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High-hardness hypereutectic high chromium, manganese, molybdenum and tungsten alloy wear resistant steel material and use thereof

A high-chromium-manganese-molybdenum-tungsten alloy and steel material technology is applied in the field of wear-resistant steel materials, high-hardness hypereutectic high-chromium-manganese-molybdenum-tungsten alloy wear-resistant steel materials, and can solve the problem of limited service life of castings, insufficient hardenability, and the need to be Improve the wear resistance and wear resistance, good hardenability, and improve the effect of carbide morphology

Active Publication Date: 2009-08-05
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its wear resistance, especially the wear resistance of erosion and corrosion wear conditions, needs to be improved.
In addition, the hardenability of the castings formed by using the current high-chromium cast iron materials is somewhat insufficient due to the air quenching process. Among them, the hardness of the hypoeutectic and eutectic high-chromium cast irons is still low, and the service life of the castings is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The high-hardness hypereutectic high-chromium-manganese-molybdenum-tungsten alloy wear-resistant steel material of this embodiment contains the following chemical components in mass ratio: carbon 3.0%, silicon 0.6%, manganese 1.3%, chromium 30.5%, molybdenum 1.5%, tungsten 0.81%, phosphorus: 0.056%, sulfur 0.05%, and the balance is iron. Heat the cast parts to 1050°C for 2 hours, then quench and cool the parts in the air, and then heat them at 280°C for 2 hours for tempering treatment. The hardness is 63-65HRC. Slurry (silicon sand+water) is done erosion corrosion wear test on jet type erosion corrosion wear testing machine, the wear resistance of the high chromium manganese molybdenum tungsten alloy wear-resistant steel material of the high hardness hypereutectic of the present embodiment is KmTBCr26 (containing C2.7%, hardness 61HRC) 1.3 times.

Embodiment 2

[0030] The high-hardness hypereutectic high-chromium-manganese-molybdenum-tungsten alloy wear-resistant steel material of the present embodiment contains the following chemical components in mass ratio: carbon 3.65%, silicon 0.7%, manganese 0.3%, chromium 25.5%, copper 0.5%, molybdenum 0.6%, tungsten 2.5%, vanadium 0.2%, phosphorus 0.051%, sulfur 0.056%, and the balance is iron. Heat the cast parts to 990°C for 3 hours, then quench and cool the parts in air, and then heat them at 280°C for 3 hours for tempering treatment. The hardness is 64-66HRC. Slurry (silicon sand+water) is done erosion corrosion wear test on jet type erosion corrosion wear testing machine, the wear resistance of the high chromium manganese molybdenum tungsten alloy wear-resistant steel material of the high hardness hypereutectic of the present embodiment is KmTBCr26 (containing C2.7%, hardness 61HRC) more than 1.4 times.

Embodiment 3

[0032]The high-hardness hypereutectic high-chromium-manganese-molybdenum-tungsten alloy wear-resistant steel material of this embodiment contains the following chemical components in mass ratio: carbon 5.0%, silicon 1.2%, manganese 3.5%, chromium 30%, molybdenum 2.6%, tungsten 0.3%, boron 0.005%, rare earth elements 0.2%, copper 1.1%, nickel 0.2%, vanadium 0.01%, niobium 0.15%, nitrogen 0.18%, phosphorus 0.048%, sulfur 0.05%, and the balance is iron. Heat the cast parts to 1020°C for 3 hours, then quench and cool the parts in the air, and then temper at 280°C for 3 hours. The hardness is 65-67HRC. Slurry (silicon sand+water) is done erosion corrosion wear test on jet type erosion corrosion wear testing machine, the wear resistance of the high hardness hypereutectic high chromium manganese molybdenum tungsten alloy wear-resistant steel material of the present embodiment is KmTBCr26 (containing C2 .7%, more than 2 times that of hardness 61HRC); when not containing nitrogen-niobi...

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PUM

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Abstract

The invention discloses a high-hardness hypereutectic high Cr-Mn-Mo-tungsten alloy abrasion-resistant steel and iron material which adopts multivariant alloying and has the advantages of good hardenability, high hardness, better abrasion-resistance and wear resistance, and the like compared with the prior high-chromium cast iron especially the addition of C, Cr, Mn, Mo and tungsten, thereby enlarging the application range of materials. The invention is suitable for preparing wearing and corrosive wearing parts, in particular to parts used for impacting corrosive wearing working conditions.

Description

technical field [0001] The invention relates to a wear-resistant steel material, in particular to a high-hardness hypereutectic high-chromium-manganese-molybdenum-tungsten alloy wear-resistant steel material and its application, belonging to the technical field of metal wear-resistant materials. Background technique [0002] At present, under the conditions of erosion, corrosion and wear in metallurgy, electric power, building materials, construction, coal, chemical industry, machinery and other industries, high-chromium cast iron materials with a chromium content of 10% to 30% are commonly used. [0003] KmTBCr26 cast iron is representative of high chromium cast iron materials containing 10% to 30% chromium, and the hardness of KmTBCr26 cast iron is about 58 to 61HRC (Rockwell hardness). At present, high chromium cast iron materials including KmTBCr26 cast iron have a microstructure dominated by martensitic matrix due to cooling and quenching in air, with high hardness and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/36C22C38/38C22C38/56C22C38/58
Inventor 李卫
Owner JINAN UNIVERSITY
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