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50吨炼钢炉经过六年使用,齿轮传动部分仍然完好无损,这与正确组装齿轮和调整间隙是分不开的,现将我们所采用的电加热组装法简介如下:一、要求与设想50吨转炉的主轴传动齿轮,其外径为φ4299毫米,厚度为589毫米,孔径为φ770毫米,总重量为17.8吨。要求这样的大齿轮加热后孔径扩胀1.5～1.7毫米,并装入主轴,然后使其自然冷却,从而使轴和齿轮达到所要求的配合公差。起初,我们在每条轮辐上绕上导线若干圈,通以200伏的交流电压,经过三天三夜的连续送电,温度还是上不去,轴孔不扩胀,齿轮无法组装。后来对齿轮的外形结构进行了仔细的观察和分
50-ton steelmaking furnace after six years of use, part of the gear is still intact, which is properly assembled gear and adjust the gap are inseparable, now we use the electric heating assembly method is as follows: First, the requirements and ideas 50 T spindle converter gear, the outer diameter of φ4299 mm, a thickness of 589 mm, aperture φ770 mm, the total weight of 17.8 tons. It is required that such a large gear be expanded by 1.5 to 1.7 mm in diameter after being heated and fitted into the main shaft and then allowed to cool naturally so as to achieve the required mating tolerances for the shaft and the gear. Initially, we wound a number of turns of wire on each spoke, through 200 volts of AC voltage, after three days and three nights of continuous power transmission, the temperature still goes up, the shaft hole does not expand, the gear can not be assembled. Later on the gear shape and structure of a careful observation and points