it is also an effective method to drill, enlarge, ream a hole on corrosion resistant steel, parts and to cut thread with screw tap by applying to the supersonic vibration;

• 在耐腐蚀钢、耐热钢和钛合金以及其它难加工材料零件上钻孔、扩孔、铰孔、用丝锥切制螺纹及用滚子滚螺纹应用超声波振动是十分有效的加工方法;