Combined sprue cup for lost foam casting

Abstract

The invention discloses a combined sprue cup for lost foam casting, which comprises a sprue cup body I and a sprue cup body II; the sprue cup body I is connected with the sprue cup body II through a middle piece; a circular truncated cone is arranged in the sprue cup body II; an arc-shaped pouring groove is arranged on the upper end face of the circular truncated cone; an annular arc groove is arranged on the upper end face of the circular truncated cone; the side wall of the circular truncated cone is fixedly connected with the inner wall of the sprue cup body II through a cast iron rod; a deep groove is arranged on the lower end face of the circular truncated cone; a channel I is arranged on the inner wall of the cast iron rod; a channel II communicated with the first channel is arranged on the side wall of the deep groove; a through hole communicated with the channel I is arranged on the side wall of the sprue cup body II; an annular box is fixedly connected to the outer side wall of the sprue cup body II; and a negative pressure pipe is arranged on the annular box and is communicated with negative pressure equipment. The combined sprue cup is adopted, damage to the whole sprue cup is avoided, the spure cup body I can be replaced with lower cost according to pouring channels of different sizes, and the pouring cost is saved; and concentrated collection of flue gas at a sprue gate is achieved, and air pollution caused by a large amount of flue gas generated during pouring is avoided.

Description

technical field [0001] The invention relates to the technical field of sprue cups, in particular to a combined sprue cup for lost foam casting. Background technique [0002] The sprue cup is one of the important components in the metal casting process. It is a channel for guiding the liquid metal into the cavity. When the molten metal is poured into the lost foam, the molten metal replaces the position of the lost foam. During the casting process In the process, a lot of smoke will be generated at the pouring gate, which will easily cause erosion to the molten metal while polluting the air, and for the pouring of large models, a large sprue cup is required. In actual production, the molten metal is poured after the pouring is completed. The sprue cup is easily bonded to the molten metal in the pouring channel, and it is difficult to take it out. It is easy to cause the sprue cup to be damaged, which increases the manufacturing cost, and it is necessary to prepare different s...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a combined sprue cup for lost foam casting. By detachably connecting sprue cup 1 and sprue cup 2 through an intermediate piece, the combined sprue cup is used to avoid gate The overall destruction of the cup, and the sprue cup can be replaced at a lower cost for different sizes of sprues, saving pouring costs; using the deep groove of the round table and the channel on the cast iron rod to realize the centralized collection of the sprue gas to avoid A large amount of flue gas pollutes the air and improves the pouring fluency of molten metal during pouring, which can effectively solve the problems in the background technology

Images