Semi-Solid Manufacturing Process of Radial-Axial Rolling Strain-Induced Method for Large Rings

Abstract

Provided is a large ring semisolid manufacturing process using a radial-axial rolling strain induction method. Firstly, on the basis that alloy smelting is completed, a centrifugal casting technology is adopted for manufacturing a cast state ring body of a large ring; secondly, a radial-axial rolling technology is adopted for performing large-deformation plastic deformation and shape-correction treatment on the cast state ring body so that a distortion state blank of the large ring can be obtained; thirdly, secondary re-smelting is performed on the distortion state blank so that a thin and small non-dendritic-structure semisolid blank of the large ring can be obtained; fourthly, semisolid integral die forging forming is performed on the semisolid blank; finally, thermal treatment is performed after forging so that the large ring can be manufactured. The non-dendritic thin and small uniform spherical micro structure large ring can be manufactured through the manufacturing process, and the advantages that the process is simple, the material utilization rate is high and the mechanical property of the product is good are achieved.

Description

technical field [0001] The invention belongs to the technical field of semi-solid processing and forming, and in particular relates to a semi-solid manufacturing process of a radial and axial rolling strain induction method for large rings. Background technique [0002] Under the circumstances of energy shortage and increasingly serious environmental pollution, new energy power generation technology has made great progress in the world, and wind energy, as a clean and renewable energy, has been increasingly valued by countries all over the world. In recent years, my country's wind power industry has developed vigorously. In 2011, the country's new installed capacity reached 18GW, ranking first in the world. [0003] With the development of the wind power industry, the demand for large-scale rings for forming large-scale wind power bearing rings and large-scale wind power ring gears has increased sharply at home and abroad. At present, the traditional manufacturing methods of...

AI Technical Summary

Problems solved by technology

[0003] With the development of the wind power industry, the demand for large-scale rings for forming large-scale wind power bearing rings and large-scale wind power ring gears has increased sharply at home and abroad. At present, the traditional manufacturing methods of large-scale rings are mainly casting and welding. , among them, the cast-formed large-scale ring parts have coarse grains, uneven microstructure distribution, and defects such as shrinkage porosity and pores, and the mechanical properties of the product are poor; while the welding-formed large-scale ring parts have cast microstructure and uneven materials. , product performance and life are very limited

Therefore, the traditional processing method of large-scale rings can no longer meet the high-efficiency, low-consumption, and superior-performance manufacturing requirements proposed by the market.

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