Steel plate for mid-temperature hydrogen-containing pressure container and manufacturing method of steel plate

A manufacturing method and a hydrogen pressure technology are applied to the steel plate for medium-temperature hydrogen pressure vessels and the manufacturing field thereof, which can solve the problems such as the deterioration of the high-temperature performance of the steel plate, and achieve the advantages of low production cost, good temperature resistance and lasting strength and toughness, and simplified welding process. Effect

Inactive Publication Date: 2018-11-30
WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patent application number is CN201110337508, a rare earth-containing moisture-resistant H 2 Steel pipes for S-corrosion heat exchangers and their production methods are also used in higher temperature and higher pressure environments, and the high temperature performance of steel plates drops sharply

Method used

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  • Steel plate for mid-temperature hydrogen-containing pressure container and manufacturing method of steel plate
  • Steel plate for mid-temperature hydrogen-containing pressure container and manufacturing method of steel plate
  • Steel plate for mid-temperature hydrogen-containing pressure container and manufacturing method of steel plate

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] The composition and weight percent content of the steel plate for the medium-temperature hydrogen pressure vessel are: C: 0.050%, Si: 0.10%, Mn: 0.65%, P: 0.012%, S: 0.004%, Alt: 1.40%, Cu: 0.01%, Ni: 0.05%, Cr: 1.0%, Mo: 0.60%, Ti: 0.002%, Nb: 0.015%, Ca: 0.0035%, the rest is Fe and inevitable inclusions;

[0073] And the content of the above elements must satisfy the following relationship at the same time:

[0074] 8≤(Cr+Mo) / C≤25;

[0075] 208≤54Al+156 / Cr+96Mo≤331.

[0076] The main process flow of the manufacturing method of the steel plate for medium-temperature hydrogen pressure vessel is: refining outside the furnace → continuous casting into slab → heating of slab → rough rolling → finish rolling → cooling and controlled cooling → normalizing and tempering → storage and cooling , wherein, the refining outside the furnace adopts the RH refining furnace process to add Al element, and the specific steps are as follows:

[0077] (1) The station control process fo...

Embodiment 2

[0084] The composition and weight percentage content of the steel plate for the medium-temperature hydrogen pressure vessel are: C: 0.070%, Si: 0.08%, Mn: 1.05%, P: 0.013%, S: 0.002%, Alt: 1.20%, Cu: 0.05%, Ni: 0.03%, Cr: 0.95%, Mo: 0.55%, Ti: 0.004%, Nb: 0.010%, Ca: 0.0025%, the rest is Fe and inevitable inclusions;

[0085] And the content of the above elements must satisfy the following relationship at the same time:

[0086] 8≤(Cr+Mo) / C≤25;

[0087] 208≤54Al+156 / Cr+96Mo≤331.

[0088] The main process flow of the manufacturing method of the steel plate for medium-temperature hydrogen pressure vessel is: refining outside the furnace → continuous casting into slab → heating of slab → rough rolling → finish rolling → cooling and controlled cooling → normalizing and tempering → storage and cooling , wherein, the refining outside the furnace adopts the RH refining furnace process to add Al element, and the specific steps are as follows:

[0089] (1) The station control proces...

Embodiment 3

[0096] The composition and weight percentage content of the steel plate for the medium temperature hydrogen pressure vessel are: C: 0.080%, Si: 0.04%, Mn: 0.70%, P: 0.008%, S: 0.001%, Alt: 1.35%, Cu: 0.04%, Ni: 0.05%, Cr: 1.05%, Mo: 0.45%, Ti: 0.003%, Nb: 0.008%, Ca: 0.0018%, the rest is Fe and inevitable inclusions;

[0097] And the content of the above elements must satisfy the following relationship at the same time:

[0098] 8≤(Cr+Mo) / C≤25;

[0099] 208≤54Al+156 / Cr+96Mo≤331.

[0100] The main process flow of the manufacturing method of the steel plate for medium-temperature hydrogen pressure vessel is: refining outside the furnace → continuous casting into slab → heating of slab → rough rolling → finish rolling → cooling and controlled cooling → normalizing and tempering → storage and cooling , wherein, the refining outside the furnace adopts the RH refining furnace process to add Al element, and the specific steps are as follows:

[0101](1) The station control process...

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Abstract

The invention discloses a steel plate for a mid-temperature hydrogen-containing pressure container and a manufacturing method of the steel plate. The steel plate for the mid-temperature hydrogen-containing pressure container comprises the following components in percentage by weight: 0.050-0.150% of C, no more than 0.10% of Si, 0.60-1.65% of Mn, no more than 0.015% of P, no more than 0.008% of S,0.90-1.60% of Alt, 0.01-0.06% of Cu, 0.01-0.08% of Ni, 0.90-1.20% of Cr, 0.20-0.60 % of Mo, no more than 0.006% of Ti, no more than 0.020% of Nb, no more than 0.0055% of Ca, and the balance Fe and inevitable impurities, wherein the contents the above elements have to meet the following relations: the quotient of the sum of Cr and Mo divided by C is greater than or equal to 8 and less than or equalto 25; and the sum of 54Al, 156 divided by Cr, and 96Mo is greater than or equal to 208 and less than or equal to 331.

Description

technical field [0001] The invention relates to the technical field of manufacturing steel plates for pressure vessels, in particular to a steel plate for medium-temperature hydrogen-facing pressure vessels and a manufacturing method thereof. Background technique [0002] The design temperature of petrochemical and pressure vessels is in the range of 150~500℃ and in contact with hydrogen atmosphere, which is a hydrogen corrosion environment. 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 improved. becomes extremely 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 the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/02C22C38/58C22C38/06C22C38/42C22C38/44C22C38/50C22C38/48C21C7/10B22D11/116C21D8/02
CPCB22D11/116C21C7/0006C21C7/10C21D8/0205C21D8/0226C21D8/0247C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/48C22C38/50C22C38/58
Inventor 王宪军李书瑞刘文斌梁宝珠杨秀利
Owner WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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