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一、问题的提出天津第三阀门厂生产的疏水阀体材料系耐热不锈钢,切削后冷作硬化现象非常严重,使普通切削丝锥的工作条件进一步恶化。直径大一些的螺纹孔,虽然可以用螺纹车刀挑扣,但要多次走刀,效率低,而且常常发生乱扣现象。另外不锈钢线膨胀系数大,粘接现象严重,加工出来的螺纹光洁度差,因而疏水阀体内螺纹的加工不仅难度大、效率低,而且质量
First, the problem raised Tianjin Third Valve Factory production of hydrophobic body material is heat-resistant stainless steel, cold hardening after cutting is very serious, so that ordinary cutting tap further deterioration of working conditions. Larger diameter threaded holes, although you can use the thread lathe pick buckle, but to go multiple times, low efficiency, and often chaos buckle phenomenon. In addition, the linear expansion coefficient of stainless steel, bonding serious, machined thread finish poor, so the trap body thread processing is not only difficult, low efficiency, and the quality