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该厂轴承套圈毛坯锻造工艺其特点是,不是用平锻或模锻工序,而采用冲孔—扩孔的工艺方法。文中介绍了锻造流水线的工艺过程,具体工艺制订的理论依据和计算,并对此工艺与其他工艺方法作了比较,阐明了本工艺之优越性:生产效率很高,质量比平锻好,材料利用率高,设备简小可靠,厂房利用率高。作者认为本工艺符合多快好省的要求,适用于中小型轴承厂。附图12幅，表9个
The factory bearing ring rough forging process is characterized by not forging or forging process, and the use of punching - reaming process. This paper introduces the process of forging pipeline, the theoretical basis and calculation of the specific process formulation, and compares the process with other process methods to clarify the superiority of the process: high production efficiency, better quality than the flat forging, the material High utilization, equipment, small and reliable, high plant utilization. The author believes that the process meets the requirements of more speed and better province, suitable for small and medium sized bearing factory. Figure 12, Table 9