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High-chromium chromium-molybdenum steel plate and production method thereof

A production method and high-chromium-chromium-molybdenum technology are applied in the field of iron and steel smelting, which can solve the problems that mechanical properties cannot meet the requirements for use of electric equipment, and achieve the effects of meeting the requirements of toughness, reducing costs, and improving strength

Active Publication Date: 2016-08-17
WUYANG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In recent years, with the continuous development of the electric power industry, the continuous improvement of the power unit and thermal efficiency can meet the needs of the development of the power industry, and the efficiency of the power unit mainly depends on the pressure and temperature of the steam. Although the traditional chrome-molybdenum steel is a medium-temperature steel, The mechanical properties at high temperatures above 500°C cannot meet the increasingly stringent requirements of power equipment

Method used

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  • High-chromium chromium-molybdenum steel plate and production method thereof
  • High-chromium chromium-molybdenum steel plate and production method thereof
  • High-chromium chromium-molybdenum steel plate and production method thereof

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Embodiment 1

[0019] The thickness of the steel plate in this embodiment is 16mm, and it is composed of the following components in weight percentage: C: 0.10%, Si: 0.5%, Mn: 0.57%, P: 0.003%, S: 0.001%, Cr: 9%, Mo : 1.05%, Cu: 0.04%, Ni: 0.06%, Sb: 0.003%, Sn: 0.005%, As: 0.009%, and the balance is Fe and unavoidable impurities.

[0020] The production method of the high chromium steel plate in this embodiment includes a smelting die-casting process, a heating and rolling process, and a heat treatment process, and the steps of each process are as follows:

[0021] (1) Smelting and die-casting process: use electric arc furnace or converter to smelt, then send it to LF refining furnace for refining and vacuum treatment, and then cast steel ingots through die-casting operation;

[0022] (2) Heating and rolling process: the steel ingot is heated and rolled in a soaking furnace, and the heating and heat preservation are uniform. The hot rolling process is adopted. The temperature of the steel i...

Embodiment 2

[0031] The thickness of the steel plate in this embodiment is 18mm, and it is composed of the following components in weight percentage: C: 0.12%, Si: 0.7%, Mn: 0.5%, P: 0.003%, S: 0.001%, Cr: 9%, Mo : 0.95%, Cu: 0.05%, Ni: 0.06%, Sb: 0.003%, Sn: 0.004%, As: 0.005%, and the balance is Fe and unavoidable impurities.

[0032] The production method of the high-chromium-molybdenum steel plate of this embodiment includes a smelting and continuous casting process, a heating and rolling process, and a heat treatment process. The steps of each process are as follows:

[0033] (1) Smelting and die-casting process: use electric arc furnace or converter to smelt, then send it to LF refining furnace for refining and vacuum treatment, and then cast steel ingots through die-casting operation;

[0034] (2) Heating and rolling process: the steel ingot is heated and rolled in a soaking furnace, and the heating and heat preservation are uniform. The hot rolling process is adopted. The temperatu...

Embodiment 3

[0043] The steel plate in this example has a thickness of 20 mm and is composed of the following components in weight percentage: C: 0.14%, Si: 0.8%, Mn: 0.5%, P: 0.005%, S: 0.002%, Cr: 9.5%, Mo : 1.0%, Cu: 0.07%, Ni: 0.08%, Sb: 0.002%, Sn: 0.003%, As: 0.007%, and the balance is Fe and unavoidable impurities.

[0044] The production method of the high chromium-molybdenum steel plate in this embodiment includes a smelting mold continuous casting process, a heating and rolling process, and a heat treatment process. The steps of each process are as follows:

[0045] (1) Smelting and die-casting process: use electric arc furnace or converter to smelt, then send it to LF refining furnace for refining and vacuum treatment, and then cast steel ingots through die-casting operation;

[0046] (2) Heating and rolling process: the steel ingot is put into the soaking furnace for heating and rolling, and the heating and heat preservation are uniform. The hot rolling process is adopted. The ...

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Abstract

The invention discloses a high-chromium chromium-molybdenum steel plate and a production method thereof. The steel plate is composed of the following components in percentage by weight: 0.09%-0.15% of C, 0.5%-0.90% of Si, 0.30%-0.60% of Mn, at most 0.007% of P, at most 0.005% of S, 8.00%-10% of Cr, 0.90%-1.1% of Mo, at most 0.20% of Cu, 0.05%-0.10% of Ni, at most 0.003% of Sb, at most 0.005% of Sn, at most 0.012% of As, and the balance of Fe and inevitable impurities. The production method comprises the following steps: smelting and die casting, heating and rolling, and heat treatment. The high-chromium chromium-molybdenum steel plate satisfies the requirements of high strength, high toughness and high processability for domestic power equipment industry, and can be widely used for manufacturing of domestic power equipment. The steel plate has the advantages of favorable cold bending property, no cracking in the material manufacturing process, and favorable resilience.

Description

technical field [0001] The invention belongs to the technical field of iron and steel smelting, and in particular relates to a high-chromium chromium-molybdenum steel plate and a production method thereof. Background technique [0002] In recent years, with the continuous development of the electric power industry, the continuous improvement of the power unit and thermal efficiency can meet the needs of the development of the power industry, and the efficiency of the power unit mainly depends on the pressure and temperature of the steam. Although the traditional chrome-molybdenum steel belongs to the steel for medium temperature, The mechanical properties at high temperatures above 500°C cannot meet the increasingly stringent requirements of power equipment. In order to meet the higher operating temperature and higher pressure of the equipment, it is particularly important to develop and put high-chromium-chromium-molybdenum steel plates into application as soon as possible....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/12C22C38/08C22C38/02C22C38/04C22C38/16C22C38/60C21D8/02
CPCC21D6/004C21D8/0226C21D8/0263C21D2211/002C22C38/008C22C38/02C22C38/04C22C38/08C22C38/12C22C38/16C22C38/18C22C38/60
Inventor 邓建军吴艳阳韦明袁锦程牛红星李样兵尹卫江贺霄
Owner WUYANG IRON & STEEL
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