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我厂广大革命职工遵照毛主席“备战、备荒、为人民”的伟大教导,发揚“敢想、敢说、敢干”的大无畏的革命精神,在合肥鋼厂的协助下,用精密鑄造法制成了模数8毫米的大型伞齿輪(图1),鑄成零件11公斤重。采用精密鑄造后,只需少量切削加工,成本比原鍛造件降低三分之二。經长时間的使用实践証明,精鑄伞齿輪在精度和性能上都能滿足使用要求。現将精鑄工艺簡介如下。
The revolutionary workers and staff of our factory abide by the great teaching of Chairman Mao’s “preparing for war, preparing for war and for the people”, carry forward the dauntless revolutionary spirit of “dare to think, dare to say, and dare to do it”. With the help of Hefei Steel Works, It became a large bevel gear with a modulus of 8 mm (Figure 1) and cast 11 kg. After the use of precision casting, only a small amount of cutting, the cost of two-thirds lower than the original forging. After a long period of use of proven practice, precision cast bevel gear in the accuracy and performance to meet the requirements. The casting process is as follows.