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TC_4钛合金涡轮盘超塑模用于型腔的材料,通常为耐高温的镍基合金K_3,此材料具有较高的红硬性和韧性,且该型腔的形状较复杂,并带有锐角。在直径φ101毫米的截面上有72个残月形槽腔(见照片1),精度要求也较高,用传统的机加工方法是难以解决的,即使用普通的电火花电源加工也难达到成形精度的要求。因此该型腔的成形加工问题就成为关键。为了解决这一关键问题,我们于1978年进行了厂所结合,研制成一种可控硅双极性脉冲电源。经过调试与工艺试验,使中、精加工的电极损耗大幅度下降,达到低损耗与超低损耗
TC_4 Titanium Alloy Turbine Disc Superplastic material used for the cavity, usually high temperature nickel-base alloy K_3, this material has a high red hardness and toughness, and the cavity shape is more complex, with an acute angle. There are 72 crescent-shaped cavities in the section of φ101 mm in diameter (see photo 1), and the precision is also high. It is difficult to solve with the traditional machining method, that is, it is difficult to achieve the forming accuracy even with ordinary EDM power processing Request. Therefore, the cavity forming problem becomes the key. In order to solve this key issue, we conducted a factory integration in 1978 and developed a thyristor bipolar pulse power supply. After debugging and process testing, so that the electrode loss of finishing a substantial decline, to achieve low loss and ultra-low loss