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250/40型水泵缸套,以往内径磨损后即报废,消耗量很大。我队机修厂将旧缸套内径进行再加工后,还可使用一次。加工方法如下: 1.将旧缸套在小焦炭炉上退火,温度约600℃左右(凭颜色估计),加热十数分钟,在室温下自然冷却。 2.用钢丝刷将退火后的缸套里外刷净。 3.用T91型搪缸机将旧缸套内径搪粗,刀具用T15硬质合金,刀具转速为500转/分。分两次走刀,第一次粗搪,第二次精搪。搪粗后,內径为93毫米。 4.将搪好后的缸套进行火焰淬火。
250/40 type pump cylinder liner, worn out after the previous diameter wear and tear, consumption is large. Our team repair shop will be the old cylinder liner diameter after processing, but also can be used once. Processing methods are as follows: 1. The old cylinder liner annealing in a small coke oven, the temperature is about 600 ℃ (estimated by color), heated for ten minutes, at room temperature, natural cooling. 2. Use a wire brush to anneal the cylinder liner inside and outside the brush. 3. With T91-type boring machine diameter of the old cylinder liner enamel, T15 carbide cutting tools, tool speed of 500 rev / min. Divided two passes, the first rough enamel, the second fine enamel. Billet thick, the inner diameter of 93 mm. 4. After enameled cylinder flame quenching.