V-method casting process

A casting process and mold technology, applied in the field of V-method casting process, can solve the problems of complex operation process, unreasonable ratio and low reliability, and achieve the effect of simple operation process, reasonable ratio and high reliability

Inactive Publication Date: 2015-04-29
LIUZHOU ZHENGLONG MACHINERY MFG
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  • Abstract
  • Description
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Problems solved by technology

[0013] In the process of realizing the present invention, the inventors found that at least there are defects such as unreasonable proportioning, complicated operation process and low reliability in the prior art

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Embodiment Construction

[0029] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0030] According to an embodiment of the present invention, such as figure 1 As shown, a V-method casting process is provided.

[0031] In the technical solution of the present invention, combined with the successful practice of Zhengzhou Yusheng Foundry Co., Ltd., the domestic V-method and lost foam casting sand are investigated, focusing on the feasibility of sharing dry sand with these two casting technologies. It is hoped that on the basis of seeking common ground while reserving differences, we can find a breakthrough in the reasonable and unified sand use of V-method casting and lost foam casting, and bring more enterprises to use these two casting processes i...

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Abstract

The invention discloses a V-method casting process which comprises the following steps: directly connecting an air hole in EVA with the size of 0.10-0.20mm with a vacuum pipe of an exhaust chamber; vacuumizing a softened plastic film by virtue of the air hole in the mold; placing a negative pressure sand box on the mold; filling the sand box with dry sand; covering a layer of sealing films on the top of the sand mold, and connecting a pouring basin with a top sprue, wherein only the sand needs to be flattened on the lower mold before laminating; vacuumizing the sand box, releasing the vacuum in the mold exhaust chamber, introducing compressed air for blowback, and separating the sand mold from the mold; producing the lower mold by using the same method; closing the upper mold and the lower mold, and preparing to perform pouring. According to the V-method casting process disclosed by the invention, the defects of unreasonable ratio, complicated operation process, low reliability and the like in the prior art can be overcome, and the advantages of reasonable ratio, simple operation process and low reliability are realized.

Description

technical field [0001] The invention relates to the technical field of casting, in particular to a V-method casting process. Background technique [0002] V method casting and lost foam casting are both the third generation of physical forming casting technology introduced in my country at the same time. The promotion and development of lost foam casting technology is rapid, and the development momentum is good. The quality of castings and the technical level of process tooling have been greatly improved. The economic scale of the enterprise is constantly expanding and improving. In recent years, due to environmental protection, energy consumption and labor constraints, a large number of foreign castings have been transferred to China. At the same time, domestic demand for castings is also increasing. While customers are constantly improving the internal quality requirements of castings, they are also continuously improving their requirements for the surface quality of cast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/03
CPCB22C9/03
Inventor 蔡成刚
Owner LIUZHOU ZHENGLONG MACHINERY MFG
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