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A kind of acid corrosion resistant martensitic wear-resistant steel plate and its manufacturing method

An acid corrosion-resistant and wear-resistant steel plate technology, applied in the field of iron and steel smelting, can solve the problem that the hardness, plasticity, toughness, wear resistance and corrosion resistance of steel plates cannot be taken into account at the same time, and achieve the effect of good mechanics and good low-temperature impact toughness.

Active Publication Date: 2021-09-24
湖南华菱涟源钢铁有限公司 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide an acid-resistant martensitic wear-resistant steel plate and its manufacturing method to solve the problems in the prior art that cannot simultaneously take into account the hardness, plasticity, toughness, wear resistance and corrosion resistance of the steel plate. question

Method used

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  • A kind of acid corrosion resistant martensitic wear-resistant steel plate and its manufacturing method
  • A kind of acid corrosion resistant martensitic wear-resistant steel plate and its manufacturing method
  • A kind of acid corrosion resistant martensitic wear-resistant steel plate and its manufacturing method

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preparation example Construction

[0073] The preparation method of the steel plate described in embodiment 1~2 and comparative example comprises the following steps:

[0074] The molten steel is smelted in a 210-ton converter after desulfurization by KR, desulfurized by the KR method, smelted by the converter, refined by the RH method, and continuously cast into slabs, which are reheated, rough rolled, finish rolled, laminar cooled, and coiled into coils , The steel coils are sequentially treated by Kaiping, quenching and tempering to become acid-resistant martensitic wear-resistant steel plates. The acid-resistant martensitic wear-resistant steel plates can be spray-printed, packaged, and put into storage.

[0075] Table 2

[0076]

Embodiment 1

[0077] The thickness of the acid-resistant martensitic wear-resistant steel plate described in embodiment 1 is 8mm, and its metallographic structure is as follows figure 1 as shown, figure 1 The metallographic structure of the medium steel plate is tempered martensite plus a small amount of carbide.

Embodiment 2

[0078] The thickness of the acid-resistant martensitic wear-resistant steel plate described in embodiment 2 is 8mm, and its metallographic structure is as follows figure 2 as shown, figure 2 The metallographic structure of the steel plate is tempered martensite plus a small amount of carbide.

[0079] The specific mechanical properties of each embodiment and comparative examples are shown in Table 3.

[0080] table 3

[0081]

[0082] The yield strength of the acid corrosion-resistant martensitic wear-resistant steel plates described in Examples 1-2 are all greater than 1100 MPa, and the tensile strength is greater than 1400 MPa. The elongation after breaking is greater than 10%, and the impact energy at -40°C is greater than 27J.

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Abstract

The application discloses an acid-resistant martensitic wear-resistant steel plate, which includes 0.14wt%≤C≤0.22wt%; 0.30wt%≤Si≤0.60wt%; 0.30wt%≤Mn≤1.00wt% in mass percentage; 0.010wt%≤Ti≤0.020wt%; 0.02wt%≤Nb≤0.04wt%; 0.50wt%≤Ni≤1.0wt%; 0.20wt%≤Cu≤0.50wt%; 0.9wt%≤Cr≤1.3wt%; 0.08wt%≤Sb≤0.12wt%; 0.0010wt%≤B≤0.0020wt%; 0<S≤0.003wt%; 0<P≤0.012wt%; Issues of hardness, plasticity, toughness, wear resistance and corrosion resistance.

Description

technical field [0001] The application belongs to the technical field of iron and steel smelting, and in particular relates to an acid corrosion-resistant martensitic wear-resistant steel plate and a manufacturing method thereof. Background technique [0002] As a commonly used steel for engineering machinery, wear-resistant steel plates are widely used in equipment in fields such as mines, coal mines, and metallurgy. Due to the harsh working environment in fields such as mines, coal mines, and metallurgy, the corrosion resistance and High wear resistance. [0003] However, in order to increase the wear resistance of the steel plate, the traditional wear-resistant steel plate usually increases the carbon content or Ti content. Although the above-mentioned method increases the wear resistance of the steel plate, it cannot guarantee the corrosion resistance of the steel plate, and the above-mentioned method will increase the wear resistance of the steel plate. Hardness, ducti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/48C22C38/50C22C38/54C22C38/60C21D1/18C21D6/00C21D8/02C21D9/00C22C33/04
CPCC21D1/18C21D6/004C21D6/005C21D6/008C21D8/0226C21D9/0081C21D2211/004C21D2211/008C22C33/04C22C38/002C22C38/02C22C38/04C22C38/42C22C38/48C22C38/50C22C38/54C22C38/60
Inventor 梁亮严立新李光辉邓想涛王昭东刘宁董常福郑庆刘旭辉汪宏兵温长飞肖爱达徐德强谢世正
Owner 湖南华菱涟源钢铁有限公司
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