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
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[0032] In order to more clearly describe the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. Ordinary technicians can obtain other drawings based on these drawings without creative work.
[0033] The embodiment of the present invention provides a superposition casting method for large-size annular steel castings, which includes the following steps:
[0034] See Figure 1 to Figure 4 , Core making: using a core box to prepare sand cores of superimposed castings, the sand cores of the superposed castings include a first sand core 10, a second sand core 20, and a third sand core 30 arranged from top to bottom. The sand core 20 also includes upper and lower partition sand cores 40, the upper and lower partition sand cores 40 and the second sand core 20 are connected as a whole, and the inner sur...
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