我厂六○三车间革命职工,为提高螺纹工具的使用寿命,改变螺纹工具生产的被动局面,提出了螺纹工具硬质合金化的口号。他们遵照毛主席关于“独立自主、自力更生”的教导,几年来,多次改造旧设备,不断采用新技术,经过反复试验,初步摸索出一套硬质合金螺纹工具的加工工艺,改装了设备。现已投入生产,使用情况良好。该车间先后制成了Ⅰ级硬质合金螺纹塞规、螺纹环规,以及丝锥、螺纹铣刀和螺纹千分尺测量头等多种工具,使用寿命均有显著提高。例如:AG24×1.5硬质合金螺纹塞规,允许中径磨损量仅为0.006毫米,现使用寿命已较T12A制的螺纹塞规提高了42倍,尚未达到允许磨损极 I plant 603 employees workshop revolution, in order to improve the service life of thread tools, thread production tools to change the passive situation, put forward the slitting of thread tools slogan. In conformity with Chairman Mao’s teaching on “independence and self-reliance”, over the past few years, they have repeatedly renovated old equipment and constantly adopted new technologies. After repeated tests, they have tentatively worked out a set of processing procedures for cemented carbide thread tools and modified the equipment. Has been put into production, the use of good. The workshop has made Ⅰ class carbide thread plug gauge, thread ring gauge, and tap, thread cutter and thread micrometer measuring head and other tools, the service life has increased significantly. For example: AG24 × 1.5 cemented carbide thread plug gauge, allowing the bore diameter wear of only 0.006 mm, the service life has been compared with the T12A thread plug gauge increased by 42 times, has not yet reached the allowable wear pole