Sand core chilling block combined structure and design method

Abstract

The invention discloses a design method of a sand core chilling block combined structure. The design method comprises the following steps that a, a chilling block is manufactured according to a casting process scheme and casting structure requirements; b, design drawings of a matrix sand core and a combined sand core are completed according to the casting process scheme and the casting structure requirements, and the combined sand core comprises the chilling block and a secondary sand core; c, the matrix sand core is manufactured according to the design drawing of the matrix sand core; d, thecombined sand core is manufactured according to the design drawing of combined sand core, when the combined sand core is manufactured, the chilling block is placed at first, and then the secondary sand core is manufactured; and e, the combined sand core and the matrix sand core are bonded together through a bonding agent. According to the method, the combined sand core is manufactured in the modethat the chilling block is placed at first and then the secondary sand core is manufactured, and thus the problem that the chilling block is difficult to place due to pattern draft, dimensional deviations, flashes of the chilling block and the like can be solved.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a combined structure and design method of a sand core chill. Background technique [0002] In order to increase the local cooling speed of the casting, the metal block placed inside the sand core cavity and on the working surface is called chill iron. In casting production, the chill iron is used to prevent shrinkage cavity, shrinkage porosity and cracks in the casting, which is very important for ensuring the quality of the casting. play an important role. In the existing technology, sand core manufacturing mainly includes traditional manual molding core making, traditional cold box core shooting core making and 3D printing core making. 3D printing core making is more efficient than manual model core making, but there are the following problems: [0003] Traditional cold box core shooting core making: the chill iron is usually set in the lower mold, but when the sand core of ...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies of the prior art, the present invention provides a combined structure and design method of the chill iron of the sand core. This method manufactures the combined sand core by placing the chill iron first, and then manufacturing the sub-sand core, which can avoid the For problems such as draft angle, dimensional deviation, and flashing, etc., which cause difficulties in placing the cold iron, it is enough to put the combined cold iron and the sub-sand core into the reserved space of the parent sand core at the same time, because no matter which method is used to manufacture The produced sand cores have the characteristics of smooth outer surface and accurate size, and there is no problem that the shape of the sub-sand core does not match the reserved space of the parent sand core. The present invention is realized by the following scheme:

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