Nickel base alloy clad steel plates for pipeline and manufacturing method thereof

Abstract

The invention discloses nickel base alloy clad steel plates for a pipeline. Each nickel base alloy clad steel plate comprises a nickel base alloy layer and a carbon steel layer. Each carbon steel layer comprises, by mass percentage, 0.01-0.20% of C, 0.10-0.5% of Si, 0.5-2.0% of Mn, at least one of less than or equal to 0.10% of V, less than or equal to 0.10% of Nb, less than or equal to 0.02% of Ti, less than or equal to 0.50% of Ni, less than or equal to 0.5% of Cu, less than or equal to 0.50% of Cr and less than or equal to 0.3% of Mo, and the balance Fe and inevitable impurities. The invention further discloses a manufacturing method of the nickel base alloy clad steel plates for the pipeline. The method comprises the steps that 1, a carbon steel blank and a nickel base alloy blank are obtained; 2, the blanks are assembled through a symmetrical splitting method; 3, composite rolling is conducted, and two sets of double-layer clad steel plates are obtained; and 4, air cooling or water cooling is conducted after rolling till the room temperature is reached, or solid solution treatment is conducted.

Description

technical field [0001] The invention relates to a composite plate and a manufacturing method thereof, in particular to a nickel-based alloy composite steel plate and a manufacturing method thereof. Background technique [0002] In industries such as energy and chemical industry, the use environment of materials is extremely harsh and highly corrosive, so it is often necessary to use high-alloy materials such as nickel-based alloys with better corrosion resistance. However, high-alloy materials such as nickel-based alloys are expensive, and the cost of using all high-alloy materials is extremely high, and the yield strength of pure nickel-based alloys is low, which is not suitable for high-pressure environments such as oil and gas transportation. In addition, the service life and For maintenance time and cost issues, it is usually designed to replace the use of pure high-alloy materials with carbon steel as the base material and nickel-based alloy as the clad layer of high-al...

AI Technical Summary

Problems solved by technology

For the rolling composite method, the greater the difference between the two materials, the greater the difference in processing technology may be, which greatly increases the difficulty of production

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