The structure and technical requirements of large flat machine tool bed casting were introduced,three gating system design schemes were described in details,and their advantages and shortages were analyzed,it was considered that filling the mold at bottom side of rails ends,using pressured gating system,and one pouring basin was the best scheme.Finally pointed out:(1)Using the advantage that the rails being long,using bottom sides filling gating system not only could reduce sand layer thickness and resin using amount of bottom mold,reduce production cost,but also could avoid high iron liquid flowing velocity of pressured gating system causing sand-washing problem.(2)Using pressured gating system,leading together the runner bars of two ends,and using one pouring basin to conduct pour could avoid upper mold height increasing,reduce sand layer thickness to elevate production efficiency.
万方数据
维普
