Pre-embedded sprue system

Abstract

The invention discloses a pre-embedded sprue system which comprises a sand box, a pouring earthenware pipe and a sprue cup, wherein an accommodating groove is formed in the sand box and is composed ofan upper part and a lower part; the upper part takes the shape of a circular truncated cone with a wider upper part and a narrower lower part; the lower part is cylindrical; the sprue cup is placed in the accommodating groove; the minimum diameter of the upper part of the accommodating groove is greater than the minimum diameter of the sprue cup and is less than the maximum diameter of the spruecup; and the maximum diameter of the upper part of the accommodating groove is greater than the minimum diameter of the sprue cup and is less than the maximum diameter of the sprue cup. The pre-embedded sprue system has the following advantages: the design of the accommodating groove ensures that the sprue cup can fit and is fastened and does not incline during pouring, so that the phenomenon about steel loss at the cup bottom is completely eliminated, and the accommodating groove meets the complicated site using condition and is durable and unlikely to deform; a sand collecting groove can collect floating sand during the working process of an external die, so that the purity of molten steel is ensured; the pouring earthenware pipe positions the sprue cup; and the production cost is reduced, the weight of an entire system is reduced, and the on-site operation is portable and simple.

Description

technical field [0001] The invention relates to the field of casting pouring equipment, in particular to a pre-embedded gate system. Background technique [0002] With the development trend of high-speed and heavy-duty railway wagons, bolsters and side frames are important components of bogies, and the corresponding manufacturing standards have also been improved. In the existing bolster and side frame green sand casting process, the sprue cup receiving the molten steel is supported and fixed by the sprue sand sleeve made of resin sand, combined with figure 1 and figure 2 As shown, the existing sprue system includes sand box 100, sprue sand sleeve 200, pouring pottery pipe 300 and sprue cup 400, which has the following disadvantages in field use: [0003] ①. The sand sleeve is made of resin sand. After being baked at high temperature during pouring, the resin decomposes, resulting in the collapse of the sand mold, reduced strength, difficulty in recycling, and high cost. ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a pre-embedded gate system, which solves the problems of serious molding sand collapse, high production cost, low production quality and low utilization rate of molten steel in the traditional gate system, and proposes some improvements The place

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