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Novel chill coating sand core mold capable of exhausting air

A chilled iron and sand core technology, which is applied in the mold field of new chilled iron outsourcing sand cores, can solve problems such as nest gas and product gas that cannot be discharged smoothly, and achieve the effect of simple structure and reduced casting cost

Inactive Publication Date: 2018-05-22
TIANJIN HANGYU METAL PROCESSING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the problems of shrinkage porosity, shrinkage cavity and cracks in the casting process, chillers are usually added to the sand core and mold core, but the center chiller may cause the gas inside the product to be unable to be discharged smoothly, resulting in nest gas phenomenon

Method used

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  • Novel chill coating sand core mold capable of exhausting air
  • Novel chill coating sand core mold capable of exhausting air
  • Novel chill coating sand core mold capable of exhausting air

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Embodiment Construction

[0015] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0016] Such as Figure 1 to Figure 3 As shown in the figure, a new type of air-cooled iron-wrapped sand core mold includes a central chilled iron 1 with a sand core 2 on the periphery of the central chilled iron 1, and a central core runs through the center chilled iron 1 from top to bottom. Exhaust hole 3, the side wall of the central cold iron 1 in contact with the sand core 2 has multiple rows of exhaust small holes 4 drilled from top to bottom, and the exhaust small holes 4 extend into the central cold iron 1 And communicate with the central exhaust hole 3 .

[0017] The horizontal section of the central exhaust hole 3 is circular, and the diameter of the exhaust small hole 4 is 3 mm.

[0018] There are five rows of exhaust holes 4, and each row is provided with ten exhaust holes 4.

[0019] The sand core 2 is a hollow cylindrical structure.

[0020] ...

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Abstract

The invention discloses a novel chill coating sand core mold capable of exhausting air. The novel chill coating sand core mold comprises a central chill, and a sand core is arranged on the periphery of the central chill; a central exhaust hole is formed in the central chill in a penetrating manner from up to down; five rows of small exhaust holes are drilled in the side wall, in contact with the sand core, of the central chill; the small exhaust holes extend into the central chill and communicate with the central exhaust hole; the horizontal section of the central exhaust hole is circular; thediameter of the small exhaust holes is 3 mm; ten small exhaust holes are in each row; and the sand core is of a cylindrical structure of which the interior is hollow. According to the novel chill coating sand core mold, the structure is simple, stable and reliable, the air trapping phenomenon in a product can be quickly and effectively eliminated, and casting cost is reduced.

Description

technical field [0001] The invention relates to the technical field of venting during the casting process of castings, in particular to a novel chilled iron-wrapped sand core mold capable of venting. Background technique [0002] With the advancement of science, castings are developing towards complex shapes, high strength, and high quality. During the casting process, higher requirements are put forward for the internal quality and appearance quality of castings. In order to solve the problems of shrinkage porosity, shrinkage cavity and cracks in the casting process, chill iron is usually added to the sand core and mold core, but the center chill iron may cause the gas inside the product to be unable to be discharged smoothly, resulting in nest gas phenomenon. Contents of the invention [0003] The invention aims to solve the deficiencies of the prior art, and provides a novel cold iron-wrapped sand core mold that can be vented. [0004] In order to achieve the above obj...

Claims

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Application Information

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IPC IPC(8): B22D15/00B22C9/10
CPCB22D15/00B22C9/106
Inventor 别云波
Owner TIANJIN HANGYU METAL PROCESSING
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