Forging method of nickel-based high-temperature alloy annular part

Abstract

The invention discloses a forging method of a nickel-based high-temperature alloy annular part. The method comprises following steps of discharging, punching, high-temperature ring forging rolling, relative low-temperature ring forging rolling, temperature rising high-temperature ring forging rolling, and low-temperature circle checking shaping. Through the above manner, the surface of the annularpart is coated with a heat preservation coating, in the rolling process, the temperature of the annular part is ensured, meanwhile, rolling deformation resistance can be reduced, forging of the annular part is improved, and the roundness error, the cracking and the like appearing in the forging process can be effectively reduced. The technology processes of high-temperature ring forging-process relative low-temperature rolling-temperature rising high-temperature ring forging-final relative low-temperature circle checking shaping are adopted, the product structure can be effectively convertedand controlled to be optimal, the cross section room temperature stretching property of the forging part meets the design need, the full cross section mechanical property of the part is evenly distributed, the product mechanical property is improved, and the part size precision is ensured.

Description

technical field [0001] The invention relates to the technical field of metal forging, in particular to a method for forging a nickel-based superalloy ring piece. Background technique [0002] Nickel-based superalloy materials are widely used, but forging ring rolling is difficult, prone to cracking and mechanical performance test results do not meet the design requirements. The existing forging methods have the following deficiencies: ①Limited by transfer time, preheating temperature, etc., the ring forging temperature range is narrow, and the rolled ring products are severely cracked and lead to scrapping; ②The existing ring rolling technology has no understanding of the ring forging temperature design Comprehensively, adopting the traditional method of gradually cooling from high-temperature ring rolling to low-temperature ring rolling will affect the transformation of the product structure, resulting in the macroscopic manifestation that the comprehensive room temperature...

AI Technical Summary

Problems solved by technology

[0002] Nickel-based superalloy materials are widely used, forging ring rolling is difficult, prone to cracking and mechanical performance test results do not meet the design requirements

The existing forging methods have the following deficiencies: ①Limited by transfer time, preheating temperature, etc., the ring forging temperature range is narrow, and the rolled ring products are severely cracked and lead to scrapping; ②The existing ring rolling technology has no understanding of the ring forging temperature design Comprehensive, adopting the traditional method of gradually cooling down from high-temperature ring rolling to low-temperature ring rolling will affect the transformation of the product structure, resulting in the macroscopic manifestation that the comprehensive room temperature tensile properties of the product cannot meet the design requirements