我厂25000吨合成氨化肥设备中Ⅱ级精度高压弹性螺栓上的螺纹,过去采用白钢刀加工,不仅速度慢(每人每班只能加工5只),而且由于工件是调质过的(硬度R_O22～26),因此刀具寿命很短,每加工一只后就要刃磨一次。后来经过多次试验结果,改用旋风切削,不仅产品质量完全符合要求,光洁度可达▽▽6, I plant 25000 tons of synthetic ammonia fertilizer equipment in high-precision semi-precision high-pressure flexible screw on the thread, the past using white steel knife processing, not only slow (only 5 per class per class), and because the workpiece is quenched (hardness R_O22 ~ 26), so the tool life is very short, after each machining must be sharpened once. Later, after many test results, the use of cyclone cutting, not only the product quality fully meet the requirements, finish up ▽ ▽ 6,