CAST MOLD AND METHOD FOR PRODUCING CAST IRON CAST IRON WITH BALL GRAPHITE OR VERMICULAR GRAPHITE.

摘要

A mould for the production of a nodular or compacted graphite iron casting has parts comprising a treatment sprue, a runner, a slag trap, a filter chamber having an ingate and an outlet and having located therein a ceramic filter having an inlet and outlet, a casting cavity ingate, and a casting cavity, and the parts of the mould have a relationship one with another such that F2 = 0.8 F1 to 1 .2 F1, F3 = 30% F4 - 100% F4, F4 /= 4.5 F1, F5 /= 1 .3 F1, F6 = 2 F5 to 4 F5, F7 /= F5 and /= F6, F8 /= F5 and /= F6, F9 = 1 .2 F1 to 3 F1, F10 /= F2, L2:L1 = 3:1 to 8:1 and L1:L3 = 1:1 to 3:1 where F1 is the cross-sectional area of the filter chamber ingate, F2 is the cross-sectional area of the casting ingate, F3 is the area of the filter outlet, F4 is the area of the filter inlet, F5 is the vertical cross-sectional area of the runner, F6 is the vertical cross-sectional area of the slag trap, F7 is the area of the interface of the reaction sprue and the runner, F8 is the area of the interface of the runner and the slag trap, F9 is the area of the interface of the slag trap and the filter ingate, F10 is the area of the interface of the filter chamber outlet and the casting ingate, L1 is the height of the slag trap, L2 is the length of the slag trap and L3 is the width of the slag trap.