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热处理球化退火是轴承钢锻件必需工序 之一,它影响到切削加工和淬火工序的质 量。过去由于我厂球化退火设备落后,操作 劳动强度高,炉温上、下、左、右,前后各 点极不均匀,因此球化退火组织不一,锻件 硬度相差很大,致使车加工困难,加工中也 由于硬度忽高忽低尺寸容易超差。 伟大的无产阶级文化大革命涤荡了一切 污泥浊水。我厂在市煤气公司和局公司革委 会的支持下,发动群众组成了以工人为主体 的技术改造队伍,自力更生建造了一座隧道 窑式连续退火炉,燃料用煤气,操作实现了 机械化,从根本上改变了原来的落后面貌, 受到了操作工人的欢迎。
Heat treatment Spheroidizing annealing is one of the necessary processes for bearing steel forgings, which affects the quality of cutting and quenching processes. In the past, due to the backward facilities of the ball annealing facility in our factory, the labor intensity of the operation was high. The temperature at the top, the bottom, the left, the right and the front were extremely uneven. Therefore, the microstructure of the ball annealing was different and the forging hardness varied greatly, , The processing is also due to the hardness of the sudden low size easily over tolerance. The great Great Proletarian Cultural Revolution has washed away all the mud and muddy water. I plant in the city gas company and the Bureau of the Revolutionary Committee’s support, mobilize the masses formed a team of workers as the mainstay of technological transformation, self-reliance to build a tunnel kiln continuous annealing furnace, fuel gas, the operation of the mechanization, from Fundamentally changed the original backwardness, welcomed by the operating workers.