Rolling production method for integral aluminum alloy ring of super-large diameter

Abstract

The invention belongs to the technical field of ring rolling forming and particularly relates to a rolling production method for an integral aluminum alloy ring of the super-large diameter. According to the technical scheme of the invention, a ring rolling forming technology is adopted, and through control over the rolling deformation temperature, the diameter increasement rate, the radial and axial feed rates, the radial and axial rolling reductions, the rolling ratio, the core roller diameter and the ring rolling heating number of an aluminum alloy ring piece of the super-large specification, the stable and continuous rolling process of the integral aluminum alloy ring of the super-large diameter is achieved, the size precision, the ovality and the radial and axial deformation quantities of the ring piece are effectively controlled, the product quality consistency is improved, the product percent of pass is increased, and technical index requirements of products are met.

Description

technical field [0001] The invention belongs to the technical field of ring rolling, and in particular relates to a rolling production method of a super large-diameter aluminum alloy integral ring. Background technique [0002] Large rings are widely used in various industrial fields, such as bearing rings and gear ring blanks for wind power equipment, transition rings for launch vehicles, pressure vessels and reinforcement rings for nuclear reactors, etc. In recent years, with the development of industry, the demand for large-scale rings in various industries is increasing, and the performance requirements are also getting higher and higher. Therefore, it is particularly important to study the manufacturing process of large-scale rings. [0003] Roll forming of the integral ring belongs to the forging process of radial-axial compression and tangential extension, including: linear feed motion, rotary rolling motion, guiding motion, and the rotation and diameter expansion mot...

AI Technical Summary

Problems solved by technology

[0004] At present, many domestic units have successfully rolled 2219 aluminum alloy rings with a diameter of 5 meters, and have been widely used in the aerospace field. However, aluminum alloy rings with a diameter of more than 5 meters are still blank in China.

With the further increase of the size of the ring, especially when the diameter is greater than 8m, the rigidity of the ring is greatly weakened, and plastic instability is prone to occur during the rolling process, making it difficult to control the roundness and dimensional accuracy of the ring during the ring rolling process; At the same time, due to the large cross-section of large rings, defects such as folding, sticking, surface peeling, and polygons are prone to occur during the ring rolling process, resulting in termination of the ring rolling process or product scrap, so the rolling process is more complicated. Higher requirements are also put forward for the control of the rolling process

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