挤压内螺纹是利用金属的塑性变形,晶粒滑移,晶格歪扭而形成螺纹的方法。是在钻床或自动攻丝机上用无槽挤压丝锥进行的。我们研制的挤压丝锥寿命已达万件以上。挤压丝锥挤入部分短,挤压速度高,所以生产率成倍提高;被加工螺纹质量稳定,废品率在千分之一以下;挤压丝锥寿命长,不需磨锋。按我厂的产量一年可节约一万多 Extruded internal thread is the use of plastic deformation of metal, grain slip, lattice distortion and the formation of thread method. It is done with a slotless squeeze tap on a drill press or automatic tapping machine. We have developed a squeeze tap life has reached more than 10,000. Squeeze tap into the part of the short, high extrusion speed, so the productivity doubled; processed thread quality is stable, the rejection rate below one thousandth; squeeze tap long life, without grinding front. According to the output of our factory can save more than ten thousand a year