Check valve body steel casting tool and manufacturing process thereof

Abstract

The invention relates to the technical field of valve body casting, in particular to a check valve body steel casting tool. The steel casting tool comprises an upper mold and a lower mold, wherein a group of positioning mechanisms are further arranged between the upper mold and the lower mold; molding chambers with the same size are formed in the middles of the opposite sides of the upper mold andthe lower mold; the middle of the upper end of the upper mold is obliquely provided with a ventilating seat; one side of the interior of the ventilating seat is provided with a sand concealed head; four inner runners penetrating through the upper mold are formed in one side of the inner of the upper mold; one end of each inner runner is fixedly inserted with a L-shaped supporting pipe, L-shaped supporting pipes communicate with the molding chambers through the inner runners; the upper ends of the L-shaped supporting pipes are inserted with connecting pipes; the L-shaped supporting pipes communicate with a cross runner through connecting pipes; and the middle of the upper end of the cross runner is provided with a earthenware pipe runner penetrating through the cross runner. With the casting tool, the structure is stable, and the defects of sand holes, air holes, shrinkage holes and cracks casing in casting are overcome.

Description

technical field [0001] The invention relates to the technical field of valve body casting, in particular to a casting mold for a valve body steel casting of a check valve and a manufacturing process thereof. Background technique [0002] Valves are an important part of industrial pipelines, which require high technical requirements such as corrosion resistance, high and low temperature resistance, or pressure resistance. Any defect in the valve body may reduce its service life, leak, or even explode, resulting in The safety consequences are immeasurable. There are countless manufacturers of industrial valves, but they often have problems in the process of production and manufacturing. Some steel castings have constant cracks in the valve body blank; Sand holes, air holes, and shrinkage cavities will emerge; some will leak during the assembly pressure test; what is more serious is that the pouring cannot be formed at all. These defects not only increase the workload and cost,...

AI Technical Summary

Problems solved by technology

[0002] Valves are an important part of industrial pipelines, which require high technical requirements such as corrosion resistance, high and low temperature resistance, or pressure resistance. Any defect in the valve body may reduce its service life, leak, or even explode, resulting in The safety consequences are immeasurable. There are countless manufacturers of industrial valves, but they often have problems in the process of production and manufacturing. Some steel castings have constant cracks in the valve body blank; Sand holes, air holes, and shrinkage cavities will emerge; some will leak during the assembly pressure test; what is more serious is that the pouring cannot be formed at all. These defects not only increase the workload and cost, but also seriously affect the steel castings. quality, so it is not conducive to the promotion of

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