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由于半椭圆腔体的形状特殊,技术要求较高,曾一度列为工艺技术难关。其加工要求为:长轴2a=4(?);短轴2b=41.2~(?);光洁度▽8;材料为H62黄铜(见图1)。
Due to the special shape of the semi-elliptical cavity, high technical requirements, once classified as technology difficulties. The processing requirements are: long axis 2a = 4 (?); Short axis 2b = 41.2 ~ (?); Smoothness ▽ 8; material H62 brass (see Figure 1).