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A self-generated tic wear-resistant steel with uniform particles and its preparation method

An in-situ self-generated, uniform particle technology, applied in the field of alloy steel, to achieve uniform distribution, concentrated self-generated particle size distribution range, and improve wear resistance

Active Publication Date: 2021-03-30
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a self-generated in-situ TiC wear-resistant steel with uniform particles and a preparation method thereof, aiming at solving the problem of uniform distribution of particle-reinforced phases in wear-resistant materials, and at the same time improving the toughness and wear resistance of particle-type wear-resistant steel

Method used

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  • A self-generated tic wear-resistant steel with uniform particles and its preparation method
  • A self-generated tic wear-resistant steel with uniform particles and its preparation method
  • A self-generated tic wear-resistant steel with uniform particles and its preparation method

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Embodiment 1

[0023] The chemical composition of in-situ self-generated TiC wear-resistant steel with uniform particles is calculated by weight percentage, C 0.22%, Si 0.24%, Mn1.85%, Ni 0.30%, Ti 0.27%, Al 0.17%, Cr 0.37%, Mo 0.18%, P 0.008%, Nb0.015%, S 0.002%, RE 0.07%, the balance is Fe and unavoidable inclusions, ingot size 80*100*300mm 3 . The steel ingot was heated at 1220°C for 2 hours, and two-stage controlled rolling was carried out. The rough rolling start temperature is 1088°C, the pass reduction rate is 31%, the 2-pass deformation is 62%, and the thickness of the intermediate billet is controlled at 30mm. The starting temperature of the finish rolling is 955°C, and the reduction rate of each pass is 11%. After 2 passes of rolling, the thickness of the final product reaches 12mm. Air-cool to room temperature after final rolling. The steel plate cooled to room temperature was quenched at 900°C for 30 minutes, and then water quenched to room temperature. The quenched steel pla...

Embodiment 2

[0027] The chemical composition of in-situ self-generated TiC wear-resistant steel with uniform particles is calculated by weight percentage, C 0.23%, Si 0.25%, Mn1.93%, Ni 0.27%, Ti 0.28%, Cr 0.35%, Al 0.19%, Mo 0.19%, P 0.008%, Nb0.014%, S 0.002%, RE 0.06%, the balance is Fe and unavoidable inclusions, ingot size 80*100*300mm 3 . The steel ingot was heated at 1220°C for 2 hours, and two-stage controlled rolling was carried out. The rough rolling start temperature is 1087°C, the pass reduction rate is 31%, the 2-pass deformation is 62%, and the thickness of the intermediate billet is controlled at 30mm. The start rolling temperature of the finish rolling is 954°C, and the reduction in each pass is 11%. After 2 passes of rolling, the thickness of the final product reaches 12mm. Air-cool to room temperature after final rolling. The steel plate cooled to room temperature was quenched at 900°C for 30 minutes, and then water quenched to room temperature. The quenched steel pla...

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Abstract

The invention discloses an even-particle in-situ authigenic TiC wear-resistant steel and a preparing method thereof and belongs to the technical field of alloy steels. The steel plate comprises the following chemical components in a percent by weight: 0.12-0.50% of C, 0.2-0.5% of Si, 1.50-5.00% of Mn, 0.007-0.01% of P, 0.20-0.80% of Ti, 0.0015-0.003% of S, 0.25-0.75% of Ni, 0.15-0.50% of Mo, 0.01-0.05% of Nb, 0.01-0.50% of Al, 0.10-0.65% of Cr, 0.01-0.35% of RE and the balance of Fe and unavoidable inclusions. The preparing method comprises smelting, steel ingot processing, heating, rolling and heat treatment. A finally obtained structure is a duplex structure of lath martensite and uniformly dispersed authigenic phase TiC. The hardness of the steel plate can reach 423-425HV, the particlesize of more than 70% of the authigenic phase TiC is 2-3mum, the in-situ authigenic phase TiC is uniformly distributed in the steel plate, and the tenacity and the wear resistance are better than those of the same grade of particle type wear-resistance steel.

Description

technical field [0001] The invention relates to a self-generated in-situ TiC wear-resistant steel with uniform particles and a preparation method thereof, belonging to the field of alloy steel. Background technique [0002] Particle-reinforced wear-resistant steel is to increase the reinforcement phase particles with higher hardness on the basis of martensite, bainite or austenite in the matrix structure, so as to improve the wear resistance of the material, and adopt appropriate volume fraction and size The enhanced phase (such as TiC with a hardness of 3200HV), its wear resistance can generally be increased to 1.5 times or more than the original. At present, many studies on TiC particle-reinforced wear-resistant steel have paid attention to the preparation process of wear-resistant steel, such as "TiC particle-reinforced multi-phase structure high-plasticity wear-resistant steel plate" "a TiC high wear-resistant steel-bonded hard alloy Preparation method of "Ultra-high-st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/50C22C38/58C22C38/44C22C38/48C22C38/06C21D8/02C21D1/18
CPCC21D1/18C21D8/0226C21D2211/004C21D2211/008C22C38/005C22C38/02C22C38/06C22C38/44C22C38/48C22C38/50C22C38/58
Inventor 麻衡武会宾王中学宁博陈爱娇
Owner SHANDONG IRON & STEEL CO LTD
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