Wear-resistant steel plate and manufacture method thereof

A wear-resistant steel plate and a manufacturing method technology, applied in the field of wear-resistant steel, can solve the problems of poor machinability and poor machinability, achieve excellent machinability, excellent wear resistance, and reduce the content of carbon and alloying elements Effect

Active Publication Date: 2013-07-10
BAOSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] Chinese patent CN101250673 discloses a low-carbon low-alloy wear-resistant steel, which is produced by quenching + tempering heat treatment process, has high hardness, but slightly poor machinability
Chinese patent CN102560272A di

Method used

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  • Wear-resistant steel plate and manufacture method thereof
  • Wear-resistant steel plate and manufacture method thereof
  • Wear-resistant steel plate and manufacture method thereof

Examples

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Embodiment

[0043] The wear-resistant steel plates of the following examples 1-10 and the steel plates of comparative example 1, the weight percentages of their chemical components are as shown in table 1; the wear-resistant steel plates of embodiments 1-10 and the steel plates of comparative example 1 (comparative example 1 It is the embodiment in the Chinese patent CN1865481A) and the manufacturing method is: smelting the corresponding smelting raw materials, then casting→heating→rolling→cooling directly after rolling→tempering (tempering is not required), control each embodiment and comparative example 1 The mass percentage distribution of chemical elements in the steel plate, wherein, in the heating step, the slab heating temperature is 1000-1250°C, and the temperature is kept for 1-3 hours; in the rolling step, the rough rolling temperature is 950-1200°C, and the finish rolling The temperature is 790-880°C; in the cooling step, use water cooling to cool below 400°C and then air cool t...

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Abstract

The invention provides a wear-resistant steel plate and a manufacture method of the wear-resistant steel plate. The wear-resistant steel plate comprises the following chemical components in percentage by weight: 0.15 to 0.35% of C, 0.10 to 0.60% of Si, 0.30 to 1.60% of Mn, not greater than 0.015% of P, not greater than 0.010% of S, 0.10 to 1.00% of Ti, 0.20 to 1.50% of Cr, not greater than 0.80% of Mo, not greater than 1.50% of Ni, not greater than 0.10% of V, 0.0005 to 0.0040% of B, 0.010 to 0.080% of Al, 0.0010 to 0.0080% of Ca, not greater than 0.0080% of N, not greater than 0.0080% of O, not greater than 0.0004% of H, and the balance of Fe and inevitable impurities. The wear-resistant steel plate has the tensile strength more than 1200MPa, elongation rate more than 13%, Brinell hardness more than 400HB, and V-shaped longitudinal Charpy impact power more than 50J at -40 DEG C. The wear-resistant steel plate has high strength and hardness, excellent wear resistance and outstanding mechanical processing performance, and is suitable for being applied to components, which are easily worn, of various mechanical means.

Description

technical field [0001] The present invention relates to wear-resistant steel, in particular to a wear-resistant steel plate and its manufacturing method; its tensile strength is greater than 1200MPa, its elongation is greater than 13%, its Brinell hardness is greater than 400HB, and it has a Charpy V-type longitudinal impact at -40°C The work is greater than 50J; the microstructure is martensite, retained austenite and fine and uniformly distributed hard phase TiC, in which the volume fraction of retained austenite is ≤5%. Background technique [0002] Wear-resistant steel plates are widely used in mechanical products such as engineering, mining, agriculture, cement production, ports, electric power and metallurgy that require high strength and high wear resistance due to extremely harsh working conditions. Such as bulldozers, loaders, excavators, dump trucks and grabs, stackers and reclaimers, feeding bending structures, etc. [0003] Traditionally, austenitic high mangane...

Claims

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Application Information

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IPC IPC(8): C22C38/32C22C38/54C22C38/58C22C33/04C21D8/02
Inventor 李红斌姚连登刘自成刘俊亮
Owner BAOSHAN IRON & STEEL CO LTD
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