N08825 composite steel plate for high-corrosion-resistance container and preparation method of N08825 composite steel plate

Abstract

The invention discloses an N08825 composite steel plate for a high-corrosion-resistance container, and relates to the technical field of steel production, and the N08825 composite steel plate comprises a base layer and a coating which are in a metallurgical bonding state, the base layer comprises the following chemical components in percentage by mass: C<=0.20%, Si<=0.55%, Mn: 0.5%-1.7%, Cu<=0.30%, Ni<=0.30%, Cr<=0.30%, Mo<=0.08%, Nb<=0.050%, V<=0.050%, Ti<=0.030%, Alt>=0.020%, P<=0.025%, S<=0.010%, Cu+Ni+Cr+Mo<=0.70%, and the balance of Fe and other unavoidable impurities. The coating is N08825 and comprises the following chemical components in percentage by mass: Ni: 38.0%-46.0%, Cr: 19.5%-23.5%, Fe>=22.0%, Mn<=1.00%, C<=0.05%, Cu: 1.5%-3.0%, Si<=0.5%, S<=0.030%, Al<=0.2%, Ti: 0.6%-1.2%, and Mo: 2.5%-3.5%.

Description

technical field

[0001] The invention relates to the technical field of steel production, in particular to an N08825 composite steel plate for high corrosion-resistant containers and a preparation method thereof. Background technique

[0002] The in-depth development of energy sources such as coal, oil and natural gas has promoted the rapid development of petrochemical industries such as petroleum refining, coal gasification and liquefaction, and natural gas processing. At the same time, higher requirements have been placed on the quality of steel for pressure vessels. in high H 2 S, CO 2 In the environment of high corrosive media, the container equipment must not only have sufficient strength, but also have good corrosion resistance, which requires high-alloy materials with better corrosion resistance, such as nickel-based alloys. If nickel-based alloys are directly used to manufacture equipment, the cost is too high, and nickel-based alloys only account for one-third of t...

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