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我国是自行车的王国,生产自行车的历史已达数十年,随着自行车行业的发展,自行车飞轮的产量、质量都发生了较大的变化。但数十年来,生产飞轮的热锻工艺似乎没有什么大的变化,其工艺程序是将切断后的棒料加热到950～1050℃,再用压力机压成扁圆、经冲床将扁圆中部冲掉,即将扁圆分离为内、外环两部分,外环部分作为飞轮外套的坯料,后经磨擦压力机压成飞轮外套的锻件。中间部分作为生产飞轮里
China is a kingdom of bicycles. The history of producing bicycles has been around for decades. With the development of the bicycle industry, the output and quality of bicycle flywheels have undergone major changes. But for decades, the production of flywheel hot forging process seems to be no big change, the process is cutting the bar after the material is heated to 950 ~ 1050 ° C, and then pressed into a flat press, the oblate central Rushed, is about to be separated into oblate, the outer ring of two parts, part of the outer ring as a flywheel jacket blank, after the friction press into the flywheel jacket forgings. The middle part as a production flywheel