Method for radially and axially rolling and forming large-sized double-edge stepped ring parts

Abstract

The invention relates to a method for radially and axially rolling and forming large-sized double-edge stepped ring parts. The method includes reasonably designing a ring part blank and a rolled hole, controlling a rolling process, directly rolling the rectangular ring part blank to form a double-edge stepped ring part, rolling the hole by a working surface of a driving roll and a working surface of a core roll, and determining the size of the working surface of the driving roll and the size of the working surface of the core roll according to rolling linear speed, equipment parameters, rolling deformation conditions, the size of the ring part blank and the size of the ring part; controlling the rolling process according to a pre-rolling stage, a main rolling stage and an integral rolling stage; and completing the rolling process when the measured outer diameter of the ring part reaches a preset value. By the aid of accumulation of continuous local plastic deformation, the diameter of the ring part is enlarged, the outline of the double-edge stepped section of the ring part is integrally formed, energy, material and working hour consumption is effectively reduced, metal flow line distribution of the ring part is improved, production efficiency and performances of the product are enhanced, and production cost is reduced.

Description

technical field [0001] The invention relates to a plastic processing method of a large ring mechanical part, in particular to a radial and axial rolling forming method of a large double-sided step ring. Background technique [0002] Large-scale double-sided step rings with a diameter of more than 1 meter (the upper and lower ends of the outer rings each have a step to form a double-layer step with a thin middle and thick upper and lower ends) as connecting flanges, slewing rings, etc., in construction machinery, Widely used in wind power, petrochemical and other fields. Such rings have harsh working conditions and need to withstand extreme working conditions such as heavy load, high impact, high and low temperature for a long time, so they have high requirements on performance and service life. Radial and axial rolling of rings is an advanced plastic processing technology for large rings. It can obtain high-quality seamless rings with high geometric precision and good struc...

AI Technical Summary

Problems solved by technology

Forging and reaming have high energy consumption, low efficiency, and poor precision; while machining steps by machining consumes a lot of materials and man-hours, and destroys the metal streamline distribution of the ring, weakening the performance of the ring, resulting in low production efficiency and high cost , performance and quality are difficult to guarantee

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