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12Cr2Mo1VR steel plate with low compression ratio and high flaw detection quality requirement for continuous casting billet forming and production process

A technology with low compression ratio and quality requirements, applied in the field of 12Cr2Mo1VR steel plate, can solve problems such as increased production costs, and achieve the effects of increased yield, increased density, and improved deformation rate

Active Publication Date: 2021-06-18
JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If steel ingots are used to make materials, it will lead to a substantial increase in production costs

Method used

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  • 12Cr2Mo1VR steel plate with low compression ratio and high flaw detection quality requirement for continuous casting billet forming and production process
  • 12Cr2Mo1VR steel plate with low compression ratio and high flaw detection quality requirement for continuous casting billet forming and production process

Examples

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Effect test

Embodiment 1

[0033] In this embodiment, the thickness of the 12Cr2Mo1VR steel plate having a low compression ratio is 130 mm, using the process route: converter steel-LF refining-RH vacuum degassing-continuous casting-continuous casting heat-rolling-Clever-quenching Backlink - Flash - Fact - Test - Introduction.

[0034] The chemical composition of the steel sheet is: C: 0.09 ~ 0.17%, Si: ≤ 0.30%, Mn: 0.30 ~ 0.60%, P: ≤0.012%, S: ≤ 0.010%, CR: 2.00 ~ 2.50%, MO : 0.80 ~ 1.20%, V: 0.25 ~ 0.35%, Sb: ≤0.003%, SN: ≤ 0.010%, AS: ≤0.010%, margin is Fe and inevitable impurity elements.

[0035] The production process includes the following steps:

[0036] (1) Smelting process: The blast furnace iron water passes through iron water pretreatment, the converter is blown, ensured that the slag steel is added to the steel water, and the deoxidation is added to the steel water. Subsequently, the LF refining furnace is refined, strengthened with oxygen, effective refining time ≥ 30 min; molway The furnace en...

Embodiment 2

[0043] This embodiment relates to a 12Cr2MO1VR steel plate thickness of low compression than high flawless quality is 150 mm, and the process route is: converter steel-LF refining-RH vacuum degassing-continuous cast-continuous casting heat-rolling-Clever-quenching Backlink - Flash - Fact - Test - Introduction.

[0044] The chemical composition of the steel sheet is: C: 0.09 ~ 0.17%, Si: ≤ 0.30%, Mn: 0.30 ~ 0.60%, P: ≤0.012%, S: ≤ 0.010%, CR: 2.00 ~ 2.50%, MO : 0.80 ~ 1.20%, V: 0.25 ~ 0.35%, Sb: ≤0.003%, SN: ≤ 0.010%, AS: ≤0.010%, margin is Fe and inevitable impurity elements.

[0045] The production process includes the following steps:

[0046] (1) Smelting process: The blast furnace iron water passes through iron water pretreatment, the converter is blown, ensured that the slag steel is added to the steel water, and the deoxidation is added to the steel water. Subsequently, the LF refining furnace is refined, strengthened with oxygen, effective refining time ≥ 30 min; molway The...

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Abstract

The invention relates to a production process of 12Cr2Mo1VR with low compression ratio and high flaw detection quality requirement for continuous casting billet forming. The process route comprises converter steelmaking, LF refining, RH vacuum degassing, continuous casting, continuous casting billet heating, rolling, slow cooling, quenching and tempering, and the steel plate comprises the following chemical components in percentage by mass: 0.09-0.17% of C, less than or equal to 0.30% of Si, 0.30-0.60% of Mn, less than or equal to 0.012% of P, less than or equal to 0.010% of S, 2.00-2.50% of Cr, 0.80-1.20% of Mo, 0.25-0.35% of V, less than or equal to 0.003% of Sb, less than or equal to 0.010% of Sn, less than or equal to 0.010% of As and the balance of Fe and inevitable impurity elements. According to the low-compression-ratio continuous casting process, on the premise that the 12Cr2Mo1VR steel plate with the high flaw detection requirement is obtained, the blank yield reaches 89% or above and is greatly improved compared with the static ingot yield, the production cost is reduced, and the production cycle is shortened.

Description

Technical field [0001] The present invention relates to a 12Cr2MO1VR steel plate and a production process of low compression ratio high flawing mass required for continuous casting blank material. It belongs to the technical field of metallurgical industry. Background technique [0002] With the large development of the hydrogenation reactor device, the 12Cr2Mo1R that has been widely applied has been widely used, which is no longer able to satisfy higher strength and long-term use in high temperatures and high-pressure hydrogen production, and 12Cr2Mo1VR has high strength. The hydrogen corrosion performance is significantly improved and the anti-back-shredded properties are better. In order to ensure the safety performance and service life of the hydrogenation reactor equipment, there is a strict flawment requirement for equipment. For thickness of 130-150mm thick steel plate, if a 450mm thickness-donate production is used, due to a large amount of 12Cr2Mo1 Vr alloy element, it l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C22C38/60B21C37/02C21D8/02C22C33/04
CPCC22C38/02C22C38/04C22C38/22C22C38/24C22C38/60C22C38/008C22C33/04B21C37/02C21D8/0205C21D2211/002
Inventor 袁伽利方寿玉宁康康徐伟明张建屈志国
Owner JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO LTD
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