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Heat treatment process of wear resistant steel

A wear-resistant steel and process technology, applied in the field of steel material processing, can solve problems such as high brittleness, and achieve the effects of improving steel hardness, low production cost, and abundant sources

Inactive Publication Date: 2012-10-03
TANGSHAN DONGFANG HUASHENG GOOD WEAR RESISTING HIGH TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cast steel contains more high-hardness borides and has better wear resistance, but the matrix is ​​martensite and is more brittle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A heat treatment process for wear-resistant steel, the chemical composition of the wear-resistant steel is composed of the following components in percentage (weight): C: 0.60; Mn: 9.0; Si: 1.10; Cr: 2.80; V: 0.10; B : 0.10; Ti: 0.02, N: 0.05, Ce: 0.6, and the balance is Fe and unavoidable impurities. The heat treatment process includes:

[0018] ①Annealing: place the wear-resistant steel in an annealing furnace at a temperature of 780°C, keep it warm for 5 hours, and then air-cool;

[0019] ②Quenching: Put the wear-resistant steel in a quenching furnace with a temperature of 1060°C, keep it warm, take out the oil and quench it after 4 hours, and cool the wear-resistant steel to below 200°C;

[0020] ③Tempering: put the wear-resistant steel in a tempering furnace at a temperature of 530°C, keep it warm for 8 hours, take it out and cool it in air.

Embodiment 2

[0022] A heat treatment process for wear-resistant steel, the chemical composition of the wear-resistant steel is composed of the following components in percentage (weight): C: 0.80; Mn: 7.0; Si: 1.30; Cr: 2.40; V: 0.20; B : 0.05; Ti: 0.03, N: 0.02, Ce: 0.8, and the balance is Fe and unavoidable impurities. The heat treatment process includes:

[0023] ①Annealing: put the wear-resistant steel in an annealing furnace with a temperature of 820°C, keep it warm for 3 hours, and then air-cool;

[0024] ②Quenching: Put the wear-resistant steel in a quenching furnace with a temperature of 1080°C, keep it warm, take out the oil and quench it after 2 hours, and cool the wear-resistant steel to below 200°C;

[0025] ③Tempering: put the wear-resistant steel in a tempering furnace at a temperature of 560°C, keep it warm for 6 hours, take it out and cool it in air.

Embodiment 3

[0027]A heat treatment process for wear-resistant steel, the chemical composition of the wear-resistant steel is composed of the following components in percentage (weight): C: 0.70; Mn: 8.0; Si: 1.20; Cr: 2.60; V: 0.15; B : 0.08; Ti: 0.025, N: 0.035, Ce: 0.7, and the balance is Fe and unavoidable impurities. The heat treatment process includes:

[0028] ①Annealing: place the wear-resistant steel in an annealing furnace at a temperature of 800°C, keep it warm for 4 hours, and then air-cool;

[0029] ②Quenching: Put the wear-resistant steel in a quenching furnace with a temperature of 1070°C, keep it warm, take out the oil and quench it after 3 hours, and cool the wear-resistant steel to below 200°C;

[0030] ③Tempering: put the wear-resistant steel in a tempering furnace at a temperature of 540°C, keep it warm for 7 hours, take it out and cool it in air.

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Abstract

The invention discloses a heat treatment process of wear resistant steel. The wear resistant steel comprises chemical components, by weight percent, including 0.60-0.80% of C, 7.0-9.0% of Mn, 1.10-1.30% of Si, 2.40-2.80% of Cr, 0.10-0.20% of V, 0.05-0.10% of B, 0.02-0.03% of Ti, 0.02-0.05% of N, 0.6-0.8% of Ce, the balance of Fe and unavoidable impurities. The heat treatment process includes: firstly, annealing the wear resistant steel at 780 DEG C to 820 DEG C in an annealing furnace, holding temperature for 3-5 hours before taking out the steel, and air-cooling the steel; secondly, quenching the wear resistant steel at 1060 DEG C to 820 DEG C in a quenching furnace, holding the temperature for 2-4 hours before taking the steel, performing oil hardening, and cooling the wear resistant steel to below 200 DEG; and thirdly, tempering the wear resistant steel at 530-560 DEG C in a tempering furnace, and holding the temperature for 6-8 hours before taking out the steel for air-cooling.

Description

technical field [0001] The invention relates to the technical field of steel material processing, in particular to a heat treatment process for wear-resistant steel. Background technique [0002] Wear is the most important way among the three damage modes (wear, corrosion, fracture) of engineering components. The loss caused by wear in the world reaches hundreds of billions of dollars every year. Therefore, it is of great importance to study wear and continuously develop wear-resistant materials with better performance. economic significance. At present, there are three types of wear-resistant materials: (1) austenitic high manganese steel, the original state is austenite, under strong external impact and high pressure stress, the transformation and strengthening of austenite to martensite occurs, and the surface layer It has high hardness, good toughness inside, excellent wear resistance and reliability. (2) Low-alloy wear-resistant steel, through reasonable chemical comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C21D6/00C21D1/26C21D1/18
Inventor 刘仕爽
Owner TANGSHAN DONGFANG HUASHENG GOOD WEAR RESISTING HIGH TECH
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