Clay pouring cup is a funnel-shaped outer gate that is manufactured separately or formed directly inside the cast to form an expanded part of the top of the straight runner. Its function is to undertake the metal liquid from the ladle, prevent spatter and overflow, convenient pouring; Reduce the direct impact of metal liquid on the mold; May skim off part of the slag, impurities, prevent it from entering the straight runner; Increase the metal hydrostatic pressure. Pouring cup is divided into funnel type pouring cup and pouring basin. Funnel - shaped sprue cup has simple structure, economizing metal, but poor skimming effect. In order to skim, usually used with the filter screen.
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