Rolling method for specially-shaped alloy steel ring part with section containing suddenly-changing curve

Abstract

The invention discloses a rolling method for a specially-shaped alloy steel ring part with a section containing a suddenly-changing curve. The rolling method for the specially-shaped alloy steel ringpart with the section containing the suddenly-changing curve comprises the following steps: blanking to obtain an initial blank; preparing a ring rolling blank from the initial blank which reaches a forging temperature requirement; and placing the ring rolling blank in a ring rolling machine, and carrying out ring rolling forming to obtain a forged ring part with the specially-shaped section. Therolling method for the specially-shaped alloy steel ring part with the section containing the suddenly-changing curve is capable of realizing rolling for the specially-shaped ring part with the section containing the suddenly-changing curve; the deformation force needed by the specially-shaped ring rolling is greatly reduced, and the production cost is lowered; the rolling achieves high internal quality and close internal structure, crystalline grains are fine, fibers are arrayed in the circumferential direction, the mechanical strength and the wear resistance are obviously improved, and the fatigue life is obviously prolonged; high product accuracy, a low machining amount and a high material utilization rate are achieved; high production efficiency and a high rolling speed are achieved; the defects of incomplete filling, fishtail pits, dimension deviation and the like in the ring rolling process are solved; and the method is capable of realizing the most economic and efficient batch production as one-process rolling forming.

Description

technical field [0001] The invention belongs to the technical field of rolling processing, and in particular relates to a method for rolling alloy steel special-shaped rings with abrupt curves in the section. Background technique [0002] The ring rolling process, also known as hole reaming or ring rolling, is a continuous local plastic forming that reduces the wall thickness of the ring, expands the diameter, and shapes the cross-sectional profile through ring rolling equipment such as hole reaming machines and ring rolling machines. processing technology. The traditional ring rolling process is suitable for rings with rectangular or near-rectangular cross-sections. For rings with complex cross-sections, a large amount of subsequent machining is required. Therefore, special-shaped ring rolling is an inevitable direction for the development of ring rolling technology. The special-shaped ring rolling process has high material utilization rate, high rolling efficiency, low pr...

AI Technical Summary

Problems solved by technology

[0005] The present invention proposes a method for rolling alloy steel special-shaped rings with sudden curves in cross-section, in order to solve the technical problem of how to prepare complex ring forgings whose cross-sectional profiles are composed of rectangles, near-rectangular shapes and sudden curves

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