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目前我国熔模精密铸造普遍是手工脱蜡,这种脱蜡方式生产效率低,劳动强度大。我厂自75年批量生产以来,每天2000多组模组脱蜡,全靠人工在80～90℃脱蜡框里搬进搬出,型壳搬运多次破损率较高。脱蜡液中的盐酸水蒸气直接威胁工人的身体健康。脱蜡过程中造成的砂孔废品率高达7～8％。因此、82年进行了热水倒脱蜡工艺试验,经过试验其效果良好,减轻了工人的劳动强度,型壳搬运次数(模组下线至焙烧)由原来的五次减少到二次,避免了型壳破损
At present, China’s investment casting is generally hand-dewaxing, this dewaxing production efficiency is low, labor-intensive. Since our factory has mass-produced in 75 years, more than 2000 sets of modules are dewaxed every day, all of them are moved in and out of the de-waxing frame at 80 ~ 90 ℃. Hydrochloric acid in the dewaxing liquid water vapor directly threaten the health of workers. Dewaxing sand sand hole caused by the rate of up to 7 to 8%. Therefore, in 82 years, hot water pouring wax test was carried out. After the test, the effect was good and the labor intensity of the workers was reduced. The number of handling of the mold shell (the assembly line went down to roasting) was reduced from the original five times to twice, avoiding The shell is damaged