Honeycomb chilling block

Abstract

The invention discloses a honeycomb chilling block. The honeycomb chilling block comprises a chilling block body, wherein the chilling block body comprises a cooling surface which is pressed close to a part, which is required to be cooled, of a casting; and a plurality of exhaust holes which penetrate through the chilling block body are formed in the cooling surface. By the exhaust holes, surface layer gas existing due to poor surface treatment of the chilling block or gas generated by decomposition of oxides at high temperature can be discharged effectively, pore defects of castings are eliminated effectively, the novel chilling block is used for casting production, and is convenient to treat and simple and convenient to arrange, the yield of the castings is improved, labor intensity for cleaning of the castings is reduced, traditional pore defects which are possibly caused by the chilling block can be eliminated, and therefore, the yield of the castings can be improved by above 5%. The novel honeycomb chilling block is suitable for various casting technologies for cast iron, cast steel and nonferrous materials. The production cost can be reduced by about 5%, and the economic benefit is obvious.

Description

technical field [0001] The invention relates to the field of casting, in particular to a honeycomb cold iron applied to casting. Background technique [0002] In the process of casting production, it is often encountered that some parts of the casting cannot be provided with risers for feeding. In terms of technology, only chilled iron can be used to control the cooling rate of the molten metal in order to obtain high density without shrinkage and porosity. Shrinkage cavity castings. If the traditional form of cold iron is used, it is usually used as a whole or divided into blocks. Its structure is solid and has no ventilation function. It is mostly used in traditional sand casting and has high requirements on the surface quality of the cold iron. If the surface treatment of the cold iron is not in place, the castings at its setting position are prone to produce porosity defects, which will seriously affect the quality of the castings, and the castings will be scrapped when...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a honeycomb chiller for casting, which has the characteristics of light weight, large cooling area, and less cleaning and grinding compared with the traditional process, and at the same time, it can prevent the ventilation of molding sand or coating layer. It is suitable for sand casting, precision casting, shell casting and lost foam casting, and solves the problem that the cold iron in the protruding part of the casting cannot be exhausted in traditional casting

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