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由沈阳标准件研究所和沈阳标准件厂共同研制成功的M16螺母大料小变形冷镦工艺及设备ZW41—16冷镦机于4月28日通过行业技术鉴定。这种设备是国际上七十年代末普遍采用的先进工艺和设备。采用老工艺冷镦螺母时,原材料的直径为螺母六角对边尺寸的0.6至0.7倍。而新研制的大料小变形工艺采用的原材料直径粗,其直径等于螺母六角对边尺寸的0.916倍。对原材料的塑性要求不高。新工艺用普通碳钢冷镦螺母时,料柱切断之后,经整形、预镦、初镦六角、精镦六角和冲孔等五个工位制成六角螺母毛坯。全部工序可在ZW41—16冷镦机的一次循环中自动完成。新工艺与
By the Shenyang Institute of standard parts and standard parts factory in Shenyang jointly developed M16 nut large deformation of the cold heading process and equipment ZW41-16 cold heading machine on April 28 by the industry technical appraisal. This equipment is the international advanced technology and equipment commonly used in the late seventies. When using the old process cold heading nuts, the diameter of the raw material hex nut 0.6 to 0.7 times the size of the opposite side. The newly developed small deformation of raw materials used in the small diameter of raw materials, the diameter equal to the hexagonal nut on the opposite side of the size of 0.916 times. The plastic requirements of raw materials is not high. New technology common carbon steel cold heading nut, the material column cut off, the plastic, pre-heading, the first upsetting hexagonal, precision upsetting hex and punching five positions made of hex nut blank. All processes can be done automatically in one cycle of ZW41-16 cold heading machine. New technology and