Frameless sand pouring basin and manufacturing method thereof

Abstract

The invention discloses a frameless sand pouring basin and a manufacturing method thereof in the technical field of casting. The frameless sand pouring basin comprises a sand mold main body, a pouring cavity with an opening in the top is formed in the middle of the sand mold main body, a pouring channel is formed in the bottom of the pouring cavity, the sand thickness of the sand mold main body around the pouring cavity is not less than 130 mm, and a framework is arranged in the sand mold main body on the side surface of the pouring cavity. During manufacturing, a mold is manufactured according to the sand mold main body, then holes are drilled in a core box frame, two steel pipes are aligned and drilled, then pin rods are driven into the holes for fixing, hanging rings are connected to the two ends of the two steel pipes in a hanging mode respectively, and finally the frameless sand pouring basin is obtained through sand feeding forming and demolding. The reasonable sand thickness is designed, the framework is arranged in the sand mold main body, the structural strength of the sand pouring basin can be improved, the problems of cracking, deformation or collapsing and the like of the sand pouring basin in the hoisting and pouring process are avoided, and the whole manufacturing process is simple, convenient and low in cost.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a frameless sand sprue basin and a manufacturing method thereof. Background technique [0002] The sprue basin is a tool used in the casting process to be placed at the sprue of the cover box to facilitate the injection of molten iron into the cavity of the sand mold to form a casting. The traditional sprue basin is generally a sand box sprue basin with a sand box, that is, the sprue basin is surrounded by a sand box, and the structural strength of the entire sprue basin can be increased through the sand box, thereby avoiding the The sprue basin has problems such as cracking, deformation or collapse. But its disadvantage is that it is troublesome to recycle the sprue basin of the traditional sand box in the medium-sized production line, and the investment cost of the sprue basin sand box is relatively high, which is not conducive to long-term production. Contents of the inven...

AI Technical Summary

Problems solved by technology

However, its disadvantage is that it is troublesome to recycle the sprue basin of the traditional sand box in the medium-sized production line, and the investment cost of the sprue basin sand box is relatively high, which is not conducive to long-term production

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