Martensite abrasion-resistant steel with high strength and production produce thereof

A production process, martensite technology, applied in the field of iron-based alloys and its production process, can solve the problems of increasing production costs, etc., and achieve the effect of improving strength and wear resistance, good wear resistance, and good welding performance

Inactive Publication Date: 2010-03-24
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing martensitic wear-resistant steel carbon content is generally all higher, as these two kinds of martensitic wear-resistant steel carbon content of Chinese patent CN1109919 and CN1132263 are all more than 0.4%, CN1132264 carbon content is slightly lower, but also 0.25-0.5%, and in order to improve hardenability, alloying elements Cr and Mo are usually added, and these steel types require heat treatment processes such as quenching + tempering, which increases the production cost of steel

Method used

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  • Martensite abrasion-resistant steel with high strength and production produce thereof
  • Martensite abrasion-resistant steel with high strength and production produce thereof
  • Martensite abrasion-resistant steel with high strength and production produce thereof

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The steel slab with the composition shown in Table 1 was obtained from steelmaking, and processed according to the rolling process in Table 2 to obtain the wear-resistant steel plate of the present invention with a thickness of 15 mm. The performance parameters of the steel plate are shown in Table 3.

[0029] Table 1 billet composition

[0030]

[0031] Table 2 Rolling process

[0032]

[0033] Table 3 performance parameters of steel plate

[0034] serial number

Yield strength MPa

Tensile strength MPa

Elongation%

-20℃ Transverse V-shaped impact energy

Example 1

1160

1450

12.8

32

Example 2

1190

1495

12.3

33

[0035] Example 3

1238

1585

11.0

35

Example 4

1320

1665

11.8

36

Example 5

1395

1743

11.5

38

[0036]As can be seen from Table 1, Table 2 and Table 3, for Example 1 ...

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PUM

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Abstract

The invention relates to a ferrous alloy and a production process thereof, especially a martensite abrasion resistant steel and a production process thereof. The martensite abrasion-resistant steel with high strength is prepared from raw chemical components by weight percentage as follows: 0.1%<=C<=0.2%, 0.5%<=Si<=1.0%, 1.0%<=Mn<=2.0%, P<=0.009%, S<=0.004%, Al<=0.03%, 0.02%<=Nb<=0.04%, 0.02%<=Ti<=0.03%, 0.015%<=V<=0.060%, 0.0015%<=B<=0.0020%, the residual is Fe and other unavoidable impurity. The production produce of the martensite abrasion-resistant steel with high strength is that: smeltingin converter or electric furnace - secondary refining in vacuum furnace - casting billet or casting ingot - reheating billet or steel ingot - TMCP + rapidly cooling process - steel plate. The martensite abrasion-resistant steel with high strength has higher strength, hardness, toughness and abrasion-resistance, which can ensure weldability and reduce cost.

Description

technical field [0001] The invention relates to an iron-based alloy and its production process, especially martensitic wear-resistant steel and its production process. Background technique [0002] Wear-resistant steel is widely used in metallurgy, building materials, mining, electric power, cement, engineering machinery, and coal, and there is a trend of increasing demand. The wear-resistant steel widely used at present is mainly divided into austenite, martensite and bainite wear-resistant steel from the perspective of structure characteristics. The traditional wear-resistant steel, that is, high manganese steel has high impact toughness. The principle of its wear resistance is mainly realized through work hardening under a large impact load, but under the action of a small impact force, high manganese steel is not enough for work hardening. As a result, its wear resistance is reduced, so it is mainly suitable for high stress wear conditions. Martensitic wear-resistant s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/14C21D8/02
Inventor 王巍王焕荣
Owner BAOSHAN IRON & STEEL CO LTD
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