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Method of preparing semi-circular hole by casting

A semi-circular, hole core technology, applied in the direction of casting molding equipment, casting mold, casting mold composition, etc., can solve the problems of difficult realization and high processing cost

Inactive Publication Date: 2015-03-04
SHENYANG POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] It is difficult to prepare semicircular holes in thick and large cross-section castings by traditional casting methods
At present, the forming method of the semicircular hole on the component: one is the traditional mechanical processing technology, such as using a forming knife to prepare; the other is a special processing technology, including laser processing, electron beam processing, electrolytic processing and EDM Processing, both processing costs are higher

Method used

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  • Method of preparing semi-circular hole by casting
  • Method of preparing semi-circular hole by casting

Examples

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Embodiment Construction

[0012] This embodiment is described by taking the casting of a semicircular through hole with a radius of 3 mm and a length of 30 mm as an example. Carry out molding according to the designed casting structure; according to the shape of the semicircular hole, apply the graphite coating evenly on the semicircular iron frame to obtain the semicircular hole core, which is consistent with the semicircular hole to be formed The hole size is the same, put the semicircular hole core into the pre-formed hole position in the cavity; pour the molten metal aluminum into the mold at a pouring temperature of 700°C, and obtain the casting after cooling and solidification; after taking out the casting Pull out the semicircular core to obtain a semicircular hole. Such as figure 2 shown.

[0013] The above-mentioned embodiments are helpful for illustrating the present invention, rather than limiting the present invention, and improvements to the present invention under the premise of the co...

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Abstract

The invention relates to the field of casting, and particularly relates to a method of preparing a semi-circular hole by casting. The method comprises the following steps: moulding according to a designed casting structure; uniformly paint a graphite coating to a semi-circular metallic framework to obtain a semi-circular hole core which is equal to the formed hole in size; putting the semi-circular hole core to the position of the pre-formed hole and pouring; taking out the casting after the casting is cooled, and drawing the semi-circular hole core out to obtain the semi-circular hole with the size meeting the design requirement. The method has the advantages of solving the problem that the semi-circular hole cannot be cast by a normal casting method.

Description

technical field [0001] The invention relates to the field of casting, in particular to a method for preparing semicircular holes by casting. Background technique [0002] It is difficult to prepare semicircular holes in thick and large cross-section castings by traditional casting methods. At present, the forming method of the semicircular hole on the component: one is the traditional mechanical processing technology, such as using a forming knife to prepare; the other is a special processing technology, including laser processing, electron beam processing, electrolytic processing and EDM Processing, both processing costs are higher. Therefore, the present invention proposes to use graphite coating as the surface material of the semicircular hole core, and to use a metal with a higher melting point than the metal matrix as the skeleton material of the hole core. The position of the hole is fixed. After the casting is cooled, the casting is taken out, and then the semicircu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/24B22C3/00B22C9/10
CPCB22C9/24B22C3/00B22C9/10
Inventor 曲迎东秦刚金美玲孙凤双尤俊华李荣德
Owner SHENYANG POLYTECHNIC UNIV
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