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Impeller manufacturing process method and impeller

A process method and technology of manufacturing process, which is applied in the field of casting, can solve problems affecting the firmness of the blade structure, damage to the blade, and increased centrifugal force of the blade, and achieve the effects of improving the firmness of the structure, prolonging the service life, and high casting precision

Inactive Publication Date: 2019-12-03
潍坊盛龙精密铸件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The increase of impeller speed will lead to the increase of the centrifugal force on the blade. When the speed exceeds the set value, the blade will be damaged.
In order to reduce the centrifugal force on the impeller, it is necessary to expand the effective flow surface of the impeller and reduce the thickness of the blade as much as possible, but too small thickness will affect the structural firmness of the blade

Method used

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  • Impeller manufacturing process method and impeller

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Embodiment Construction

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0021] Refer below figure 1 The manufacturing process of the impeller according to the embodiment of the present invention is described.

[0022] Such as figure 1 As shown, the manufacturing process of the impeller according to the embodiment of the present invention includes:

[0023] A wax pattern in the shape of an impeller is prepared, and the wax pattern is kept warm and cooled. Among them, the indoor temperature T1 when preparing pressed wax can meet: 24℃≤T1≤26℃, the wax material temperature T2 can meet: 56℃≤T2≤60℃, and the temp...

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Abstract

The invention discloses an impeller manufacturing process method and an impeller. The process method comprises the following steps: preparing a wax mold, subjecting the wax mold to heat preservation and cooling, coating the outer surface of the wax mold with at least one coating layer and drying to form an outer shell; melting the wax mold in the outer shell by adopting water vapor to form a cavity; fusing stainless steel raw materials to form molten steel, heating the outer shell to a set temperature, pouring the molten steel into the cavity, forming an impeller model after the molten steel in the cavity is solidified, taking the impeller model out of the outer shell and polishing, and carrying out primary shot blasting, acid pickling and argon welding on the impeller model to form the impeller. According to the impeller manufacturing process method, the operation is convenient, the casting precision of the impeller can be greatly improved, the structural firmness of blades can be improved on the premise that the thickness of the blades is reduced, and therefore the service life of the blades can be prolonged.

Description

technical field [0001] The invention relates to the field of casting technology, in particular to a manufacturing process method of an impeller and the impeller. Background technique [0002] With the development of science and technology, the centrifugal pump is also developing towards high speed, so the speed and head of the impeller must also be improved. The speed up of the impeller will increase the centrifugal force on the blades. When the speed exceeds the set value, the blades will be damaged. In order to reduce the centrifugal force on the impeller, it is necessary to expand the effective flow surface of the impeller and reduce the thickness of the blade as much as possible, but too small thickness will affect the structural firmness of the blade. Therefore, how to improve the casting precision of the impeller is the key to improving the service life of the impeller. Contents of the invention [0003] The present invention aims to solve at least one of the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C9/22B22C7/02B22D31/00F04D29/22
CPCB22C7/02B22C9/04B22C9/22B22D31/00F04D29/22
Inventor 陈培伟
Owner 潍坊盛龙精密铸件有限公司
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