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为了保证钻井前线大干快上,我站从1974年下半年起组织进行采用熔模精密铸造工艺试制7-520-2型转盘小螺旋伞齿轮的技术攻关。对我们来讲,精铸这种齿轮有不少困难:齿轮外形尺寸大,失蜡前模壳加蜡模重达120公斤,需两人用扁担抬着操作;齿形为螺旋齿,齿面为螺旋渐开面,压型无法用手工加工出来。面对这些困难,担负主攻任务的铸钢车间全体职工,丝毫没有退缩。他们在车间党支部的领导下,发扬革命战争时期的那么一股劲,那么一
In order to ensure that the drilling front is faster and faster, I station from the second half of 1974 to organize the use of investment casting precision casting process 7-520-2 small spiral bevel gear technology research. For us, casting gear of this kind has many difficulties: the gear has a large size and a wax mold weighs 120 kg before the wax is lost. For the spiral involute, the pressure can not be processed by hand. In the face of these difficulties, all the workers in the foundry who took the main task did not retreat. Under the leadership of the party branch of the workshop, they carried forward such a vigorous effort during the revolutionary war. Then one