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12Cr2Mo1R steel plate for seal head and production method thereof

A production method and steel plate technology, applied in the field of metallurgy, can solve problems such as complex mechanical properties, complex heat treatment process, and large production difficulty of steel plate manufacturers, and achieve the effects of simple rolling process, simplified production process flow, and reduced risk of cracks

Inactive Publication Date: 2019-08-06
WUYANG IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Steel plates for hydrogen-facing equipment are generally required to have relatively complex mechanical properties. Therefore, the actual production of steel plates generally requires normalizing (accelerated cooling) + tempering processes for production. However, due to the wide width of the head plate and the complicated heat treatment process, adopt Conventional normalizing accelerated cooling treatment will bring greater production difficulty to steel plate manufacturers

Method used

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  • 12Cr2Mo1R steel plate for seal head and production method thereof
  • 12Cr2Mo1R steel plate for seal head and production method thereof
  • 12Cr2Mo1R steel plate for seal head and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The thickness of the 12Cr2Mo1R steel plate used for the head of this embodiment is 8 mm, and its chemical composition and mass percentage are shown in Table 17.

[0032] The production method of the 12Cr2Mo1R steel plate for the head of this embodiment includes smelting, continuous casting, heating, rolling, heat treatment, sample processing and heat treatment procedures, and the specific process steps are as follows:

[0033](1) Smelting process: use electric arc furnace or converter for smelting, tap when the temperature of molten steel reaches 1600°C; tap molten steel into LF refining furnace for refining for 1 hour, use calcium carbide and carbon powder for weak deoxidation, and then feed Al Deoxidation is carried out in the way of deep deoxidation, and then the alloy is added and the content of Mn, Mo, Ni, Cr, and V is fine-tuned according to the desulfurization situation to meet the target composition requirements. After LF refining, the VD furnace is vacuumed for ...

Embodiment 2

[0046] The thickness of the 12Cr2Mo1R steel plate used for the head in this example is 100 mm, and its chemical composition and mass percentage are shown in Table 17.

[0047] The production method of the 12Cr2Mo1R steel plate for the head of this embodiment includes smelting, continuous casting, heating, rolling, heat treatment, sample processing and heat treatment procedures, and the specific process steps are as follows:

[0048] (1) Smelting process: use electric arc furnace or converter for smelting, tap when the temperature of molten steel reaches 1602°C; tap molten steel is sent to LF refining furnace for refining for 1.1h, use calcium carbide and carbon powder for weak deoxidation, and then use feeding Deoxidation is carried out in the form of Al line deep deoxidation, and then the alloy is added and the content of Mn, Mo, Ni, Cr, and V is fine-tuned according to the desulfurization situation to meet the target composition requirements. After LF refining, the VD furnace...

Embodiment 3

[0061] The thickness of the 12Cr2Mo1R steel plate used for the head of this example is 200 mm, and its chemical composition and mass percentage are shown in Table 17.

[0062] The production method of the 12Cr2Mo1R steel plate for the head of this embodiment includes smelting, continuous casting, heating, rolling, heat treatment, sample processing and heat treatment procedures, and the specific process steps are as follows:

[0063] (1) Smelting process: use electric arc furnace or converter for smelting, tap when the temperature of molten steel reaches 1601°C; tap molten steel into LF refining furnace for refining for 1.3h, use calcium carbide and carbon powder for weak deoxidation, and then use feeding Deoxidation is carried out in the form of Al line deep deoxidation, and then the alloy is added and the content of Mn, Mo, Ni, Cr, and V is fine-tuned according to the desulfurization situation to meet the target composition requirements. After LF refining, the VD furnace is va...

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Abstract

The invention discloses a 12Cr2Mo1R steel plate for a seal head and a production method thereof. The steel plate comprises the following chemical components, by mass percentage: 0.11-0.13% of C, 0.06-0.08% of Si, 0.40-0.60% of Mn, 0.007-0.009% of P, less than or equal to 0.004% of S, 2.2-2.5% of Cr, 1.00-1.10% of Mo, 0.10-0.20% of Ni, less than or equal to 0.05% of Nb, less than or equal to 0.20%of Cu, less than or equal to 0.003% of Sb, less than or equal to 0.01% of Sn, and less than or equal to 0.01% of As, with the balance being Fe and unavoidable impurities. The production method includes smelting, continuous casting, heating, rolling, heat treatment, sample processing and heat treatment processes. The 12Cr2Mo1R steel plate for a seal head and the production method thereof solve theproblems that a conventional 12Cr2Mo1R steel plate is prone to surface cracks, high hardness and easy cracking during processing, and ensures the comprehensive performance of the formed steel plate.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a 12Cr2Mo1R steel plate for a head and a production method thereof. Background technique [0002] 12Cr2Mo1R steel plate (American standard SA387Gr22, European standard 13CrMo9-10) has higher strength and better high-temperature creep performance, which can meet the requirements of higher service temperature and light weight of pressure vessels, so it is more and more suitable for petrochemical hydrogenation equipment. more and more widely. [0003] At present, the 12Cr2Mo1R head steel plate is generally wide (width ≥ 3000mm), and is mainly used for the manufacture of hydrogen equipment heads. Steel plates for hydrogen-facing equipment are generally required to have relatively complex mechanical properties. Therefore, the actual production of steel plates generally requires normalizing (accelerated cooling) + tempering processes for production. However, due to the ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/60C21D8/02C22C33/04
CPCC21D8/0205C21D8/0226C21D8/0263C22C33/04C22C38/002C22C38/008C22C38/02C22C38/04C22C38/42C22C38/44C22C38/48C22C38/60
Inventor 吴艳阳邓建军李杰龙杰袁锦程牛红星李样兵尹卫江王东阳侯敬超瞿征
Owner WUYANG IRON & STEEL
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