Megawatt cast and forged integrated planetary turret steel casting casting and heat treatment process

Abstract

The invention relates to a Megawatt-level casting-forging integrated planetary rotating stand steel casting and a heat treatment process. According to the Megawatt-level casting-forging integrated planetary rotating stand steel casting and the heat treatment process, the processing cycle is short, the production cost is low, the material use rate is high, and the transmission stability between a star shaft and a planetary rotating stand is good. The Megawatt-level casting-forging integrated planetary rotating stand steel casting comprises, by mass, 0.15%-0.20% of C, 0.20%-0.45% of Si, 0.50%-0.98% of Mn, 0-0.035% of S and P, 0.80%-1.00% of Cr, 1.40%-1.70% of Ni, 0.20%-0.30% of Mo, 0.04%-0.08% of V, and 0.02%-0.06% of Ti. The Megawatt-level casting-forging integrated planetary rotating stand steel casting and the heat treatment process have the advantages that the Megawatt-level planetary rotating stand steel casting used for wind power generation is integrally casted and formed through integrated casting and forging, the material use rate is increased, the processing procedure is simplified, and the production cost is saved; meanwhile, due to the fact that material integration is achieved, the defects caused by casting split manufacturing and planetary gear engagement transmission are overcome, the product service life is prolonged, and the working efficiency is improved, so that the extremely considerable economic benefits and development prospects are achieved.

Description

technical field [0001] The invention relates to a simplification of manufacturing process, short processing cycle, low production cost, high utilization of materials, good transmission stability between star shaft and planetary turret, megawatt-level casting and forging combined planetary turret steel casting and heat treatment The technology belongs to the field of manufacturing steel castings of planetary turrets. Background technique [0002] In terms of structural design, traditional planetary turrets are often assembled by planetary shaft forgings and planetary turret castings. The material of the planetary shaft forging is generally 35CrMo, and the casting material of the planetary turret body is ZG42CrMo with high strength, and one end of the planetary shaft forging is processed into a planetary gear (see Picture 1-1 ), the planetary turret body is cast as a whole from the upper and lower flanges and the middle pin, and the inner hole of the upper flange is processed...

AI Technical Summary

Problems solved by technology

[0006] The manufacturing process of the planetary turret is complicated, the processing cycle is long, the production cost is high, and the utilization rate of materials is low. The stability of the transmission will be reduced. At the same time, when either the planetary shaft gear or the steel casting of the planetary turret body is worn and cannot meet the performance requirements, both must be replaced at the same time, and the production replacement cost is high.

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