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Molding Technology of Single Flange Hollow Box Casting

A molding process and casting technology, which is applied in the field of molding technology of single-sided flange castings, can solve problems such as increased consumption costs, deformation of molding castings, and head deviation, so as to improve the quality of finished products, avoid head deviation, and reduce product defects. Effect

Active Publication Date: 2017-05-17
山西祥禾机械股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of casting encounters the following problems in the casting process, which greatly reduces the yield, increases the consumption cost, and wastes a lot of time: 1. Its special structure with flanges on one side, and the structure on both sides is unbalanced. 2. Due to the hollow box structure, there is no support inside, which will cause shrinkage or swelling during processing; 3. During the pouring process, the resin sand will expand due to the gas between the sands, resulting in molded castings Deformation defects

Method used

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  • Molding Technology of Single Flange Hollow Box Casting
  • Molding Technology of Single Flange Hollow Box Casting

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Embodiment Construction

[0017] The molding process method of the single-sided flange hollow box casting of the present invention, the casting is a rectangular hollow box and only the top surface is provided with a flange 2, according to the following steps:

[0018] The first step is to manufacture the pattern. According to the casting process drawing of the casting, the pattern 1 corresponding to the casting is manufactured. The top surface of the pattern 1 is provided with a flange 2, such as figure 1 As shown, a false flange 3 is also reserved on the bottom surface of the pattern 1, and the volume of the false flange 3 is equal to that of the flange plate 2 and the position is opposite, as shown in figure 2 shown;

[0019] In the second step, the paint is dried, and the paint is scratched on the surface of the finished pattern 1, and dried;

[0020] The third step, modeling, put the dried pattern in the sand box, place the sprue, and fill the sand box with resin sand for modeling;

[0021] The ...

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Abstract

The invention provides a formative technology method of a single-side flange hollow box casting, and belongs to the technical field of casting technologies. The formative technology method is aimed at solving the technical problem that products are scraped due to offset in the casting process, and the yield is improved. According to technical scheme of the formative technology method of the single-side flange hollow box casting, the casting is a rectangular hollow box, and a flange disc is only arranged on the top face of the casting. The method comprises the following steps that firstly, a template corresponding to the casting is manufactured according to a casting technology drawing of the casting, the flange disc is arranged on the top face of the template, a pseudo flange is further reserved on the bottom face of the template, the pseudo flange and the flange disc are equal in size and opposite in position, and the top face and the bottom face of the template are connected and fixed through a plurality of cast nails; secondly, coating is dried; thirdly, forming is conducted; fourthly, pouring, shakeout and cleaning are conducted; and fifthly, all portions of the casting are machined, and the pseudo flange and the cast nails on the casting are removed.

Description

technical field [0001] The molding process method of the single-sided flange casting of the present invention belongs to the technical field of casting process. Background technique [0002] The Finnish Tongli 310.652 casting is a hollow rectangular box with a flange on one side. This product has a particularly high process quality requirement, and the product will be scrapped if you do not pay attention to the casting process. However, this kind of casting encounters the following problems in the casting process, which greatly reduces the yield, increases the consumption cost, and wastes a lot of time: 1. Its special structure with flanges on one side, and the structure on both sides is unbalanced. 2. Due to the hollow box structure, there is no support inside, which will cause shrinkage or swelling during processing; 3. During the pouring process, the resin sand will expand due to the gas between the sands, resulting in molded castings deformation defects. These problems...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/24B22C9/02B22C7/00
Inventor 潘怀仁潘瑞祥
Owner 山西祥禾机械股份有限公司
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