用连续浇铸的方法铸造铸铁管件,近一年来,我厂已在3时至36时不同口径的三十多种铸件上普遍推行了,并取得一定的经验。这种铸型在小口径的铸件上可以连续浇铸五十次左右,最高曾达到七十多次;在大口径的铸件上可以连续浇铸二十次左右。它比旧的铸造方法大大地缩短生产周期,设备效率大大提高。同时由于在推行中改变了一些操作工艺,使铸件废品率显著下降。 Casting cast iron pipe fittings by continuous casting method, in the past year, our factory has been generally implemented on more than thirty kinds of castings of different caliber from 3 o’clock to 36 o’clock and gained certain experience. This type of mold can be continuously cast about 50 times on small-diameter castings up to 70 times. On large-caliber castings, it can be continuously cast about 20 times. It greatly shortens the production cycle than the old casting method, equipment efficiency greatly improved. At the same time due to change in the implementation of a number of operating processes, the casting scrap rate dropped significantly.