High temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels and manufacturing method thereof

A technology for resisting hydrogen sulfide and pressure vessels, applied in the field of low-alloy steel manufacturing, can solve problems such as inapplicability, and achieve the effects of reducing welding construction strength, improving the ability to resist elemental sulfur corrosion, and good high-temperature creep resistance.

Active Publication Date: 2017-02-22
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The patent No. CN99116658.2 is the steel production method mentioned in the hydrogen sulfide and chloride ion corrosion resistant steel and its special equipment and accessories. The steel is made by adding an appropriate amount of Re elements to the alloy system of 07Cr2AlMoR. The main purpose is to denature the inclusions in the steel during steelmaking to improve the toughness of the finished steel. This alloy design is not suitable for use in higher temperature and pressure environments.

Method used

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  • High temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels and manufacturing method thereof
  • High temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels and manufacturing method thereof
  • High temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels and manufacturing method thereof

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Embodiment

[0038] A steel plate for pressure vessels with high temperature resistance and hydrogen sulfide corrosion resistance, the main chemical composition of which is C0.03-0.115%, Si 0.05-0.50%, Mn 0.50-1.65, P 0.008-0.013%, S 0.001-0.005% by weight %, Alt (total aluminum content) 0.60-1.45%, Cr 2.8-3.20%, Mo 0.45-0.70%, Nb 0.020-0.035%, unavoidable inclusion Cu 0.01-0.06%, Ni 0-0.08%, V 0- 0.02%, Ti 0-0.006%, Ca 0.0015-0.0054%, and the rest is Fe. The details are shown in Table 1.

[0039] Table 1 each embodiment of the present invention and comparative example chemical composition value (wt, %)

[0040]

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Abstract

The invention discloses a high temperature-resistant and hydrogen sulfide corrosion-resistant steel plate for pressure vessels. The steel plate mainly comprises, by weight, 0.03%-0.12% of C, 0-0.60% of Si, 0.50%-1.70% of Mn, 0-0.015% of P, 0-0.008% of S, 0.40%-1.50% of Al, 2.75%-3.25% of Cr, 0.30%-0.70% of Mo, 0.020%-0.035% of Nb, and the balance Fe and inevitable impurities. By the adoption of the type of steel, high temperature mechanical properties in the high temperature condition of 350 DEG C or above can be improved obviously, the fracture toughness and impact toughness of the steel plate are not lowered, and the high temperature resistance, high pressure resistance and hydrogen sulfide resistance are achieved.

Description

technical field [0001] The invention relates to a steel plate for a pressure vessel with high temperature resistance and hydrogen sulfide corrosion resistance and a manufacturing method thereof, belonging to the field of low alloy steel manufacturing. Background technique [0002] The design temperature of the chemical pressure vessel is greater than or equal to 200°C and it is a hydrogen corrosion environment when it is in contact with a hydrogen atmosphere. If there is a multiplier effect of high temperature sulfur corrosion and hydrogen corrosion in the hydrogen corrosion environment, the corrosion resistance and high temperature performance of the material will be exceptional. important. The requirements for corrosion-resistant steel for petrochemical processing are inseparable from the service conditions, and the basic factors of the service conditions can be summarized into three points: service temperature, corrosion behavior of the medium and working pressure, and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/38C22C38/26C22C38/22C22C38/02C22C38/04C22C38/06C21C7/10B22D11/108C21D8/02
CPCB22D11/108C21C7/0006C21C7/10C21D8/0226C21D8/0263C21D2211/005C21D2211/009C22C38/02C22C38/04C22C38/06C22C38/22C22C38/26C22C38/38
Inventor 王宪军李书瑞刘文斌战国锋杨秀利洪霞
Owner 武汉钢铁有限公司
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