Squirrel-cage shell load bearing structure integrated with runner film tire

Abstract

The invention discloses a squirrel-cage load bearing structure integrated with a runner film tire in a fusible pattern precision cast shell manufacturing process. The squirrel-cage load bearing structure comprises an embedded primary-secondary runner film tire 1, a transverse runner film tire 2, an inner runner film tire 3 and a bracket 5, wherein the primary-secondary runner film tire is a main shell load bearing member, passes through the bottom of a runner, is connected with the transverse runner film tire in a wax welding way, and is tightly fixed on the bracket, so that a squirrel-cage structure is formed; and the primary-secondary runner film tire, the transverse runner film tire and a wax pattern 4 are connected together by using the inner runner film tire (inner water port shape) in a wax welding way. Due to the adoption of the structure, load bearing in the shell manufacturing process of ultra-conventional large-sized and super large-sized shells is realized, the size is up to 600mm*600mm*1800mm or even larger, the weight is up to hundreds of kilograms or even certain tons, the structural strength and stiffness can be ensured effectively, a pouring system and the wax pattern are prevented from being broken and deformed and are convenient to move, rotate and place, and convenience is brought to shell manufacturing operation of workers.

Description

technical field [0001] The invention relates to the technical field of investment casting precision casting mold shell manufacturing, in particular to a squirrel-cage mold shell load-bearing structure integrated with a runner membrane tire in the mold shell manufacturing process. Background technique [0002] The load-bearing structure of the conventional shell making process in the existing investment precision casting is a wax tree (also known as wax string) structure composed of a wax mold and a gating system composed of wax. When the load is large, that is, when making large-scale shells, this material and structure can neither guarantee the structural strength, so that the wax tree (wax string) will not break, nor can it guarantee the rigidity of the structure, so that the wax tree (wax string) No deformation. Cracks or deformations are serious problems that cannot guarantee the high-precision quality of investment casting products. At the same time, it is difficult o...

AI Technical Summary

Problems solved by technology

[0004]In the context of the increasingly large-scale structure, the conventional wax tree (also known as wax string) composed of wax mold and wax gating system The structure can no longer meet the demand, and it is necessary to find a new load-bearing structure that can make large-scale shells, not only ensure the structural strength and stiffness, but also facilitate movement, operation and placement

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