生产电杆时,为避免模缝跑浆,我们采取过很多措施,如在模缝处垫油棉绳、草绳、抹黄油、浇石蜡……。这些方法有的费用较高,有的难于操作,有的效果很差。根据统计,电杆的废次品率仍然很高,其中缝口跑浆引起的废次品率要占33.7～50％。 In the production of poles, we have taken many measures to avoid the running of the moulds, such as oiling cotton ropes, straw ropes, greases, and paraffin waxes at the die seams. Some of these methods are expensive, some are difficult to operate, and some have poor results. According to statistics, the rate of defective scraps for electric poles is still very high, and the defective scrap rate caused by seam running slurry accounts for 33.7 to 50%.