A high-pressure casting process for a non-welded axial flow fan

A high-pressure casting and axial flow fan technology, which is applied in the field of high-pressure casting technology, can solve the problems of low efficiency of performance parameters, heavy weight of low-pressure casting impellers, and lack of market competitiveness.

Active Publication Date: 2020-10-23
ZHEJIANG SHANGFENG SPECIAL BLOWER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low-pressure cast impeller is heavy and lacks market competitiveness; the steel welded impeller is easy to deviate from the technical requirements, and the efficiency of performance parameters is low

Method used

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  • A high-pressure casting process for a non-welded axial flow fan
  • A high-pressure casting process for a non-welded axial flow fan
  • A high-pressure casting process for a non-welded axial flow fan

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A high-pressure casting process for a non-welded axial flow fan, specifically a high-pressure casting process for an impeller, including: a. Design and manufacture of a casting mold: according to the shape of the impeller, the shape of the casting mold is designed to complete the manufacture of a cone; b. The installation of the casting mold And test: put the mold into the casting machine, and test the performance index of the mold; c. Pretreatment of the mold: after preheating the mold, spray paint on the inner wall of the mold; d. With casting: after the upper and lower molds of the mold are combined, the molten metal is injected into the mold; e. Injection and cooling: The injection pressure is reasonably controlled to fill the entire mold with metal, and then the mold is cooled. Processing to make the castings rapidly formed; f. Open the mold and take out the parts: after the molding is completed, the upper and lower molds are opened, and the formed castings are dire...

Embodiment 2

[0063] A high-pressure casting process for a non-welded axial flow fan, specifically a high-pressure casting process for an impeller, including: a. Design and manufacture of a casting mold: according to the shape of the impeller, the shape of the casting mold is designed to complete the manufacture of a cone; b. The installation of the casting mold And test: put the mold into the casting machine, and test the performance index of the mold; c. Pretreatment of the mold: after preheating the mold, spray paint on the inner wall of the mold; d. With casting: after the upper and lower molds of the mold are combined, the molten metal is injected into the mold; e. Injection and cooling: The injection pressure is reasonably controlled to fill the entire mold with metal, and then the mold is cooled. Processing to make the castings rapidly formed; f. Open the mold and take out the parts: after the molding is completed, the upper and lower molds are opened, and the formed castings are dire...

Embodiment 3

[0065] A high-pressure casting process for a non-welded axial flow fan, specifically a high-pressure casting process for an impeller, including: a. Design and manufacture of a casting mold: according to the shape of the impeller, the shape of the casting mold is designed to complete the manufacture of a cone; b. The installation of the casting mold And test: put the mold into the casting machine, and test the performance index of the mold; c. Pretreatment of the mold: after preheating the mold, spray paint on the inner wall of the mold; d. With casting: after the upper and lower molds of the mold are combined, the molten metal is injected into the mold; e. Injection and cooling: The injection pressure is reasonably controlled to fill the entire mold with metal, and then the mold is cooled. processing to make the castings rapidly formed; f. Open the mold and take out the parts: after the molding is completed, the upper and lower molds are opened, and the formed castings are dire...

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PUM

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Abstract

The invention discloses a high-pressure casting process of a welding-free axial flow fan, in particular to a high-pressure casting process of an impeller. The high-pressure casting process comprises the steps of: a, casting mold designing and manufacturing: designing the shapes of the casting molds according to the shape of the impeller to finish manufacturing cones; b, casting mold mounting and test: mounting the casting molds into a casting machine, and testing performance indexes of the casting molds; c, casting mold pretreatment: after preheating treatment is conducted on the casting molds, spraying paint to the inner walls of the casting molds; d, mold assembling and casting: after the upper molds and the lower molds of the casting molds are combined, injecting molten metal into the casting molds; e, injection and cooling: reasonably controlling the injection pressure, filling the whole casting molds with metal, then performing cooling treatment on the casting molds, and rapidly forming the castings; f, mold opening and taking-out: opening the upper molds and the lower molds after the casting molds are formed, and directly taking out the formed castings; and g, quality inspection: performing index detection and surface treatment on the obtained castings, screening the castings meeting the requirements, and obtaining finished products.

Description

technical field [0001] The invention belongs to the technical field of fan processing, and in particular relates to a high-pressure casting process of an axial flow fan without welding. Background technique [0002] At present, the common design in the fan industry adopts the method of welding to assemble the various parts of the fan. This method is manual welding, which is labor-intensive, and welding defects are prone to occur at the solder joints, and the manufacturing and installation are very cumbersome. [0003] In addition, the impellers of industrial and civil construction axial fans on the market generally use low-pressure casting impellers or steel welded impellers. The low-pressure casting impeller is heavy and lacks market competitiveness; the steel welded impeller is easy to deviate from the technical requirements, and the efficiency of performance parameters is low. [0004] When the impeller is manufactured by casting, it is necessary to coat the surface of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D17/00B22D17/20B22D17/22
CPCB22D17/00B22D17/2007B22D17/2015B22D17/2236
Inventor 胡伟锋竹渝晓卢青青陈一伟石红
Owner ZHEJIANG SHANGFENG SPECIAL BLOWER IND CO LTD
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