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我厂广大职工为了贯彻落实毛主席关于“备战、备荒、为人民”的指示,打破洋框框,走自己工业发展的道路,学习了国内兄弟单位宝贵经验,于一九七○年三月,开始了精密锻造NJ—230越野汽车前后桥差速器行星齿轮的试验研究工作。我们在近四年的试验过程中,主要是对锻造过程中金属塑性变形、原材料表面缺陷对精锻齿轮质量的影响、精锻工艺、模具的寿命、锻造的设备以及无氧化加热等方面进行了试验研究工作。我们自制了250吨摩擦压力机和无氧化锻造加热炉等关键设备,为进一步开展精密锻造创造了一定条件。现基本上投入了生产。
In order to implement Chairman Mao’s instructions on “preparing for war, preparing for famine and for the people,” our factory workers broke the rules and regulations and took the road of industrial development to learn from the valuable experience of our brother units. Beginning in March 1970, The precision forging NJ-230 off-road vehicles before and after the bridge differential planetary gear test research. In the course of nearly four years of testing, we mainly conducted the research on the metal plastic deformation in the forging process, the influence of the surface defects on the quality of the forging gear, the precision forging process, the life of the mold, the forging equipment and the oxidation-free heating Experimental research work. We made 250 tons of friction presses and non-oxide forging furnaces and other key equipment, to further carry out precision forging to create certain conditions. Now basically put into production.