目前,挤压丝锥在国内外已大量生产和使用,特别在仪器、电器、柴油机、航空、航天等工业部门中得到广泛使用。在工业发达的国家中,挤压丝锥的使用率约占丝锥的10%,而在我国,使用率比较低,只占1～2%。我国在1960年左右开始研制。但是一直到70年代末期才投入生产使用,近几年得到发展。我广从84年起,按ISO精度标准设计制造了M8～M22系列的磨制挤压丝锥和M2～M6非磨制挤压丝锥,规格已基本复盖了常用的内螺纹加工系列。 At present, the extrusion tap has been mass produced and used both at home and abroad, and is widely used in industries such as instruments, electrical appliances, diesel engines, aviation and aerospace. In industrialized countries, the use of squeezed tap about 10% of tap, while in our country, the use rate is relatively low, only 1 to 2%. Our country began to develop in 1960 or so. However, it was not put into production until the late 1970s and has been developed in recent years. Since 1984, our company has designed and manufactured M8 ~ M22 series of squeeze tap and M2 ~ M6 non-squeeze tap according to ISO precision standard. The specifications have basically covered the common thread processing series.