Low-alloy high-toughness wear resistant steel plate and manufacturing 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 welding performance and mechanical processing performance, poor welding and mechanical processing performance, and are not suitable for wide application, and achieve excellent welding performance and excellent welding performance. , the effect of low cost
CN103146997AActive Publication Date: 2013-06-12BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2013-06-12

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Abstract

The invention relates to a low-alloy high-toughness wear resistant steel plate and a manufacturing method thereof. The steel plate contains the following chemical components (wt%): C: 0.08-0.20%, Si: 0.10-0.60%, Mn: 1.00-2.00%, B: 0.0005-0.0040%, Cr<=1.50%, Mo<=0.80%, Ni<=1.50%, Nb<=0.080%, V<=0.080%, Ti<=0.060%, Al: 0.010-0.080%, Ca: 0.0010-0.0080%, N<=0.0080%, O<=0.0080%, H<=0.0004%, P<=0.0015% and S<=0.010%, wherein the following relationships are satisfied: 0.20%<=(Cr / 5+Mn / 6+50 B)<=0.55%, 0.02%<=(Mo / 3+Ni / 5+2Nb)<=0.45%, and 0.01%<=(Al+Ti)<=0.13%; and the balance of Fe and inevitable impurities. The contents of both carbon and alloy elements are reduced, the characteristics of refining, strengthening and the like of micro-alloy elements such as Nb and Ti are fully utilized, and a TMCP (thermal mechanical control processing) technology is adopted, so that the wear resistant steel plate is high in hardness, good in toughness, easy to weld, perfect in wear resistance, and applicable to easily-worn components in various types of mechanical equipment.
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Description

technical field

[0001] The invention relates to wear-resistant steel, in particular to a low-alloy high-toughness wear-resistant steel plate and its manufacturing method; its typical mechanical properties: its tensile strength is greater than 1200MPa, its elongation is greater than 12%, and its Brinell hardness is greater than 400HB, -40 ℃ Charpy V-type longitudinal impact energy greater than 60J. 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 manganese steel is generally used to produce wear-resistant parts. Austenitic high-manganese steel can undergo strain-induced martensi...

Claims

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