Production process of A286 high-strength high-temperature alloy forge piece for high-pressure hydrogen energy equipment

Abstract

The invention discloses a production process of an A286 high-strength high-temperature alloy forge piece for high-pressure hydrogen energy equipment. The production process comprises the following production steps that blanking is carried out, specifically, a steel billet is taken as a raw material, wherein the steel billet comprises the following chemical components in percentage by weight: less than or equal to 0.06% of C, less than or equal to 0.5% of Si, less than or equal to 1.5% of Mn, less than or equal to 0.002% of S, less than or equal to 0.02% of P, 13.5-15.5% of Cr, 25-26% of Ni, 1.1-1.4% of Mo, less than or equal to 0.2% of Al, 0.1-0.3% of V, less than or equal to 0.08% of Co, less than or equal to 0.1% of Cu, 2-2.35% of Ti and 0.003-0.01% of B; forging is conducted; solution annealing is conducted; precipitation hardening is conducted; and nondestructive inspection and machining are conducted. The production process has the advantages that the diameter of an obtained forge piece is 630 mm, the thickness is 300 mm, the inclusion index is required to be smaller than grade 2, the tensile strength, the yield strength, the ductility and the hardness value are not lower than specified values, and the nondestructive inspection sensitivity meets the requirement.

Description

technical field [0001] The invention relates to a production process of an A286 high-strength high-temperature alloy forging used in high-pressure hydrogen energy equipment. Background technique [0002] In recent years, the popularity of the hydrogen energy industry has continued to rise. As an important part of the hydrogen energy industry and the necessary infrastructure for the promotion and application of hydrogen energy utilization technologies such as hydrogen fuel cell vehicles, hydrogen refueling stations have received more and more attention from national and local governments. The main equipment of the hydrogen refueling station includes hydrogen storage device, hydrogen refueling compressor equipment, filling equipment, station control system, including testing equipment in a high-pressure hydrogen environment, etc. The key materials in hydrogenation compressors and testing equipment, such as high-pressure gas trays are crucial core components, and the high-pres...

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Problems solved by technology

[0004] In order to solve the technical problems such as easy coarse grain, insufficient purity, non-destructive flaw detection and other technical problems of forgings with large wall thickness of A286 material, the present invention provides a production process of A286 high-strength superalloy forgings for high-pressure hydrogen energy equipment. The A286 material produced by this process High purity, can meet the requirements of flaw detection and inspection

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