Method for laminating multiple core assemblies of shell casting chaplet at intervals

Abstract

The invention discloses a method for laminating multiple core assemblies of a shell casting chaplet at intervals, belonging to the field of casting technology. The method comprises the following steps of: combining a 1# sand core between a broken suspension core and a 1# sand core body with a conformal chaplet; preparing the shape of a casting mould, and positioning and limiting the 1# sand core and 3# sand core downwards to the casting mould through a lower core print and an end core print; placing two combination chaplets, two upper left combination chaplets and two upper right combination chaplets at a corresponding part combining the 1# sand core and a 2# sand core; placing a combination chaplet at a corresponding part combining the 2# sand core and the 3# sand core; and placing the 2# sand core to finish the lamination of core assemblies. Through the method disclosed by the invention, the casting process of the product is simplified, the technological complexity level of the product is reduced, the dimensional accuracy and accuracy of form and position of the product are improved, the problems of core folding, core suspension and the like of the product are solved, the yield of the product is increased, the production efficiency of the product is improved, the production cost is lowered, and the market competitiveness of the product is enhanced.

Description

technical field [0001] The invention relates to a process method for stacking multiple sets of cores at intervals for core supports of shell castings, and belongs to the field of casting technology. Background technique [0002] At present, in the design, development and manufacture of mechanical products at home and abroad, complex cavity products with many casting cores, multiple compartments, broken chambers, and broken suspension cores, as well as parts with strict requirements on wall thickness, size, and shape and position accuracy, such as air compressor shells For the casting of the body, the usual methods are: one is to design a large and long core head to assemble the core; the other is to improve the grade of the chemical material used for core making to improve the strength of the sand core itself; the third is to increase the middle and lower core bone of the sand core Sand core strength. However, none of the above methods can completely and reliably guaran...

AI Technical Summary

Problems solved by technology

However, none of the above methods can completely and reliably guarantee that the core is prone to defects such as broken cores, floating cores, cracked cores, and punching cores when the core is heated during the pouring process and the molten metal generates buoyancy force, which will cause the product to be scrapped. It is urgently needed Development of a new process method for stacking multiple sets of cores at intervals for shell castings

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