Pouring system and casting method for producing annular nodular iron casting from clay sand

Abstract

The invention relates to a pouring system and a casting method for producing an annular nodular iron casting from clay sand. The technical problems that an existing pouring system and method for producing annular nodular iron castings are low in product yield, prone to generating shrinkage defects and low in comprehensive yield are mainly solved. According to the technical scheme, the pouring system comprises a straight pouring gate, a straight pouring gate nest, two filtering devices, two transverse pouring gates, an annular casting model, an inner pouring gate, an exhaust rod and an overflow column; the overflow column is arranged at the top of the annular casting model, the exhaust rod is arranged beside the top of the annular casting model, the inner side of the annular casting model is connected with one end of the ingates, the ingates are evenly arranged on the outer side of the cross gate and connected with the cross gate, and the inner side of the cross gate is connected with one side of the filtering device. The other side of the filtering device is connected with a sprue nest, the sprue nest is connected with the bottom of a sprue, and the sprue is connected with a pouring cup.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a pouring system and a casting method for producing annular ductile iron castings from clay sand. Background technique [0002] The indicators of the controllable casting production cost are mainly the yield of the casting process and the yield of the casting, which are collectively referred to as the yield of molten iron. The high yield is of great significance to the enterprise benefit. [0003] To produce annular ductile iron castings, the common casting methods are resin sand molding and clay sand molding. Due to the unique solidification characteristics of ductile iron, there are liquid shrinkage and solidification shrinkage during the cooling process, which leads to shrinkage defects at the final solidified position of the casting, which reduces the yield of molten iron. For clay sand molding, the strength of the mold is low, and the riser needs to be set up, ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of low product yield, easy shrinkage defects and low comprehensive yield in the existing gating system and method for producing ring-like ductile iron castings, and to provide a clay sand Gating system and casting method for producing ring-like ductile iron castings

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