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...

AI Technical Summary

Problems solved by technology

The explosive composite method has many disadvantages: it is difficult to ensure 100% bonding of the board surface, and the stability of the composite performance is poor; the specification and size are limited; affected by the climate and environment, the production efficiency is low; A series of problems such as noise treatment, personal safety protection and serious pollution

CN101559527A Chinese patent application discloses a method for explosive welding of N08825 nickel-based alloy clad steel plates, which may have uncomposited areas and need repair welding, and in order to eliminate the stress generated during the explosion, heat treatment is also required, which affects the clad layer. Corrosion resistance has a certain influence; CN109694989A Chinese patent application discloses a kind of 825 / X70 nickel-based alloy composite plate and its production method, which adopts the method of vacuum electron beam welding to form blanks, but this method needs to be welded in a vacuum chamber, The input cost is increased, and the vacuuming takes a long time, and the production efficiency is not high. At the same time, because the thermal expansion coefficient of the nickel-based alloy and carbon steel is very different, the weld between the nickel-based alloy and the carbon steel is easy to crack during the heating process. Affect binding properties

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