Stack casting method of sand covering modeling

Abstract

The invention discloses a stack casting method of sand covering modeling. The stack casting method comprises the following steps: (1) manufacturing molds, namely manufacturing an upper mold, a lower mold and iron boxes, wherein the lower mold is provided with a lower mold sample, the upper mold is provided with an upper mold sample, each iron box comprises a U-shaped box body and a separation plate for separating the box body into two box chambers, and the separation plate is provided with a semicircular sprue; (2) closing the molds and spraying sand, namely putting the iron boxes on the lower mold and closing the upper and lower molds; (3) stacking, namely taking out the iron boxes from the upper and lower molds and stacking the iron boxes into a plurality of layers of iron boxes, wherein a whole circular sprue is formed by the two semicircular sprues of the two iron boxes of each iron box layer; (4) pouring, namely pouring molten iron from the whole circular sprue of the iron box layer at the top into an upper box chamber and a lower box chamber of each iron box to finish pouring; and (5) unpacking, namely after cooling, pulling out the iron boxes from side faces of castings so as to finish a casting process. The stack casting method provided by the invention can be used for carrying out stack casting on the castings after sand covering modeling, so that the production efficiency is improved and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of casting, in particular to a stacked box casting method for sand crawling molding. Background technique [0002] Since the iron mold sand-covered casting process can achieve riser-free casting and casting precision, its machining allowance is smaller compared with the sand casting process, the cleaning workload of the pouring system is less, and the cost is lower. When casting many castings, Usually iron sand casting is used. However, at present, when iron mold sand casting is carried out on flat, short, and cavity-free castings similar to crankshaft bearing caps, the upper and lower molds covered with sand are combined and transported to the pouring table for pouring. In order to facilitate unpacking, The pouring process can only be carried out individually, and stacked box pouring cannot be performed, thereby affecting the casting efficiency of mass production of castings. [0003] The information disclosed in t...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a stacked box casting method for sand-covered molding, so as to overcome the disadvantage that stacked box pouring cannot be performed in the pouring process of the existing iron mold sand-covered casting method

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