A high-temperature alloy thin-walled annular casting pouring system and manufacturing method

Abstract

The invention discloses a high temperature alloy thin-wall annular casting pouring system and a manufacturing method. The pouring system comprises a casting shell and a pouring gate shell. A plurality of risers are arranged at the top of the casting shell separately. The pouring gate shell is located above the risers and provided with a pouring cup located at the top, division pouring gates are arranged on the periphery of the bottom of the pouring cup in a radial shape, and the division pouring gates are connected with drainage pouring gates corresponding to the risers one to one. A baffle is arranged on the peripheral edge of the bottom of the drainage pouring gates and shields top openings of the risers. The risers are not connected, so that the shape of a casting is not affected when the risers contract, contracting stress on the casting is avoided, and deformation or cracking of the casting is further avoided. The pass rate and the process yield of the casting are improved. The casting shell injects molten steel into the risers through the division pouring gates and the drainage pouring gates, the pouring gates only have a flow guide function for the molten steel, the molten steel is not stored in the pouring gates, and metal materials are saved.

Description

A high-temperature alloy thin-walled annular casting pouring system and manufacturing method technical field The invention belongs to the technical field of investment mold manufacturing, and in particular relates to a pouring system and a manufacturing method of a high-temperature alloy thin-walled annular casting. Background technique Thin-walled ring castings can usually adopt centrifugal casting or gravity casting process, while high-temperature alloy castings mostly adopt gravity casting. The previous casting process design is to set a lot of risers and connect them with multiple sprues. A large number of risers require Consumes a lot of metal materials, the process yield is very low, and molten steel will exist in the runner when pouring, resulting in waste of molten steel, and due to the large shrinkage stress generated by the intricate gating system, the ring of riser, runner and ring casting When the riser or runner shrinks, it will cause deformation or cracks in ...

AI Technical Summary

Problems solved by technology

Thin-walled ring castings can usually adopt centrifugal casting or gravity casting process, while high-temperature alloy castings mostly adopt gravity casting. The previous casting process design is to set a lot of risers and connect them with multiple sprues. A large number of risers require Consumes a lot of metal materials, the process yield is very low, and molten steel will exist in the runner when pouring, resulting in waste of molten steel, and due to the large shrinkage stress generated by the intricate gating system, the ring of riser, runner and ring casting When the riser or runner shrinks, it will cause deformation or cracks in the casting

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