Overlapped-type casting method of large-size annular steel casting
A steel casting, superimposed technology, applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of large amount of molding sand, low molding efficiency, high cost of pattern production, etc., to reduce casting costs and improve production efficiency effect
Active Publication Date: 2017-08-04
KOCEL STEEL
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The invention provides an overlapped-type casting method of a large-size annular steel casting. The casting method includes the following steps of core fabrication, fabrication of outer die samples, modeling, core setting, mould assembling, pouring, mould dismantling, dead head removal, supplementing and attaching and cutting and parting. The step of core fabrication includes the processes that sand cores of the overlapped casting is prepared through a core box, and the sand cores of the overlapped casting include a first sand core, a second sand core and a third sand core from top to bottom; the step of modeling includes the process that the outer die samples are placed into a sand box to form outer die cavities; the step of core setting includes the steps that the third sand core is placed in the corresponding outer die cavity to form a pouring and forming cavity of the overlapped casting; and the step of cutting and parting includes the process that a workblank of the overlapped casting is cut and separated along a vertical partition plate casting to obtain a fourth-grade annular casting and a fifth-grade annular casting. The overlapped type casting technical scheme is adopted for the overlapped-type casting method, two or more castings are combined into an overall casting, therefore production efficiency is improved, and the casting cost is lowered.
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