Method for rolling and forming GH536 high-temperature alloy complicated irregular cross section annular part

Abstract

The invention discloses a method for rolling and forming a GH536 high-temperature alloy complicated irregular cross section annular part and aims at providing complicated irregular cross section annular parts which are complete in appearance, high in dimensional accuracy and excellent in texture and performance and are distributed along the part appearances. The technical scheme is that the method comprises the steps of heating a GH536 high-temperature alloy rod blanked according to specification and performing upsetting, punching and twice small-deformation annular rolling to form a rectangular pre-rolling blank; heating the rectangular pre-rolling blank and using a pre-rolling inner shape module and a pre-rolling outer shape module to roll the rectangular pre-rolling blank in a pre-rolling irregular hole to form an irregular pre-rolling blank with a structural shape inverse to a structural shape of a final rolling irregular cross section annular part; and heating the irregular pre-rolling blank and using a final rolling inner shape module and a final rolling outer shape module to roll the irregular pre-rolling blank in a final rolling irregular hole to form an irregular cross section annular part, wherein metal inside the irregular pre-rolling blank in the final rolling irregular hole flows from most to least according to preset volume flows when widened along the radial direction in rolling. The annular part is mainly used as a rotary body part for cylindrical casings and the like in the fields of aerospace and the like.

Description

technical field [0001] The invention relates to a rolling forming method of a ring piece, in particular to a rolling forming method of a GH536 superalloy ring piece with complex special-shaped cross-section. Background technique [0002] With the rapid development of industries such as aviation, aerospace, ships, nuclear energy, gas turbines, and wind power generation, higher requirements are placed on the forming dimensional accuracy, structure and performance of ring parts, and the rolling technology of ring parts is also moving towards With the development in the direction of near-net shape, the cross-sectional shape of rolled-formed ring parts is becoming more and more complex, and the difficulty of roll-forming is becoming more and more difficult. How to obtain ring parts distributed along the shape of parts is the premise of precision roll-forming. [0003] The Chinese invention patent specification CN 101279346A published on October 8, 2008 discloses a rolling forming...

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