Thermal insulation insert of metal mold casting mold

Abstract

The invention discloses a thermal insulation insert of a metal mold casting mold. The thermal insulation insert of the metal mold casting mold comprises a shell and a cover body. The shell is of a cavity structure, an opening is formed in the top of the cavity, the cavity is filled with thermal insulation materials, and the cover body covers the opening face of the shell in a combined mode. The shell is embedded into a mold body, and the side face is designed along with the shape of the mold body. A part of a casting feeding channel is formed in the bottom of the shell, and the bottom of the shell and the mold body are combined to form the complete casting feeding channel. By the adoption of the thermal insulation insert of the metal mold casting mold, heat dissipation of a casting in thefeeding channel can be slowed down, the disconnection time of the feeding channel is delayed, and the feeding effect of the thick and large portion of the casting is guaranteed.

Description

technical field [0001] The invention relates to a metal casting molding, in particular to a thermal insulation insert of a metal casting mould. Background technique [0002] In the metal mold casting process, the molten metal feeds the casting through the pouring riser, and the casting realizes sequential solidification. However, often due to the particularity of the casting structure, there will be thick parts locally. Because the solidification of the thick parts is slow, usually the feeding channels of the thick parts have been solidified and cut off, and the thick parts themselves have not been completely solidified. Casting shrinkage defects such as shrinkage cavities and porosity appear in the thick and large parts of the casting. Generally, to solve this kind of problem, it is considered to add a group of cooling in the thick and large parts in the mold design, so as to realize rapid solidification, or increase the feeding channel, delay the disconnection time of the...

AI Technical Summary

Problems solved by technology

Although the setting of the insulation block slows down the heat dissipation of the casting at the position of the feeding channel and prolongs the solidification time of the casting at the feeding channel, but because the insulation block needs to be fitted with the casting feeding channel, the insulation block needs to be made into a fixed shape , while many existing insulation materials are granular or gel-like, and cannot be directly fixed on the periphery of the feeding channel

Moreover, due to the limitation of the product or mold structure, the layout space of the feeding channel is limited, so that the size of the insulation block is limited, which in turn affects the insulation effect

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