Radial and axial rolling forming method for large-sized double-groove ring piece

Abstract

The invention relates to a radial and axial rolling forming method for a large-sized double-groove ring piece. The method mainly comprises the following steps: (1), manufacturing blanks: uniformly heating the bar section to the hot forging deformation temperature, unsetting, piercing and punching the hot material section on a press to manufacture ring piece blanks, wherein the size of each ring piece blank is determined according to the ring piece size, the rolling ratio and the radial and axial feeding quantity ratio; (2), designing a rolling hole shape, wherein the rolling hole shape consists of a driving roller working surface and a core roller working surface and the size of the driving roller working surface and the core roller working surface is determined according to the rolling linear velocity, the equipment parameters, the rolling deformation condition, the size of the ring piece blank and the size of the ring piece; and (3), rolling and forming: placing the ring piece blank on a ring rolling machine and rolling, wherein the rolling process is controlled by reasonably distributing feeding speed and feeding quantity according to three stages of prerolling, primary rolling and shaping rolling and the rolling process is finished when the outer diameter of the ring piece reaches the preset value. The method has the characteristics of high production efficiency, low production cost and high product quality.

Description

technical field [0001] The invention relates to a radial and axial rolling forming method of a large double-groove ring. Background technique [0002] A large double-groove ring with a diameter of more than 1 meter and symmetrical grooves on the inner surface is widely used as a slewing support ring, a large bearing ring, etc. in construction machinery, port machinery, and wind power generation equipment. Such rings have harsh working conditions and are subjected to low temperature, heavy load, high impact, etc. for a long time, and have high requirements on their performance and service life. Ring diameter axial rolling ( figure 1 (shown) is an advanced plastic processing technology for the production of large-scale rings, which can obtain high-quality large-scale rings with high geometric precision and good organizational properties in a short period of time through continuous local plastic deformation. However, the radial and axial rolling process of rings is a complex ...

AI Technical Summary

Problems solved by technology

Grooves are processed by mechanical cutting, the loss of cutting materials and processing time are large, and the machining accuracy of the two grooves is difficult to keep consistent, and the cutting process destroys the metal flow distribution of the ring, which reduces the mechanical properties of the ring, resulting in low production efficiency. , high cost, difficult to guarantee quality and life

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