Steam turbine cylinder block casting pouring system and casting process

Abstract

The invention relates to the technical field of steam turbine cylinder block casting, and particularly relates to a steam turbine cylinder block casting pouring system and a casting process. The steam turbine cylinder block casting pouring system comprises a pouring gate device arranged in a sand mold, a plurality of slag collecting tables communicating with the pouring gate device and located on a parting surface of the sand mold, a plurality of dead heads fixedly connected with a casting, a plurality of inner chilling blocks connected with the inner side face of the casting, a plurality of outer chilling blocks connected with the outer side face of the casting, a plurality of cooling pipes arranged in the sand mold and a cooling medium generating device communicating with one ends of the cooling pipes; and the pouring gate device, the slag collecting tables, the dead heads, the inner chilling blocks and the outer chilling blocks all communicate with a pouring cavity of the sand mold. The steam turbine cylinder block casting pouring system and the casting process can solve the problem of sand burning in the casting process of the steam turbine cylinder block casting, and operation in the casting process is more convenient.

Description

technical field [0001] The present application relates to the technical field of steam turbine cylinder casting, in particular to a pouring system and casting process for steam turbine cylinder castings. Background technique [0002] At present, the inner and outer cylinders of the steam turbine are the main castings of the steam turbine, which are subjected to the pressure difference between the gas inside and outside the cylinder along the axial direction, the weight of the cylinder itself and the force of the pipeline, as well as the pressure caused by the uneven temperature distribution. thermal stress and deformation. [0003] In related technologies, the steam turbine cylinder block is often prone to defects such as sand sticking and slag inclusion during casting, resulting in castings, resulting in excessive excavation volume, difficult repair of castings, complicated casting process operation, and poor casting quality. [0004] Therefore, there is an urgent need for...

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Problems solved by technology

[0003] In related technologies, the steam turbine cylinder block is often prone to defects such as sand sticking and slag inclusion during casting, resulting in castings, resulting in excessive excavation volume, difficult repair of castings, complicated casting process operation, and poor quality of castings

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