The invention relates to the technical field of
forge process, and provides a method for manufacturing a
nickel-based high-temperature
alloy forge piece. The method comprises the following steps of: (1) inspecting
nickel-based high-temperature
alloy raw materials, including re-inspection of chemical components and inspection of steel
ingot surface; (2) blanking by adopting a sawing
machine sawing method or a
chopper hot chopping method; (3) heating the steel
ingot; (4) cogging and performing
forge deformation treatment; (5) performing last but one heating number
forging and last heating number
forging; (6) rough
processing; (7)
heat treating; (8) testing mechanical performance; (9) detecting faults with ultrasonic wave; and (10) inspecting products. According to the manufacturing method provided by the invention, home-made manufacture of
nickel-based high-temperature
alloy forge pieces achieves a success, utilization of China to the nickel-based high-temperature alloy is broken through, and the quality and grade of products of China can be improved, the requirement of domestic market for high-quality valve rods and valve discs of a
steam turbine, seal rings in various specifications and critical parts in
aerospace field can be fulfilled, and the competitive capability of native enterprises in the
international market can be improved.