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A kind of manufacturing method of centrifugal pump inducer

A manufacturing method and induction wheel technology, applied in the direction of manufacturing tools, casting equipment, casting molding equipment, etc., can solve the problems of many surface defects, poor casting precision, low quality of finished products, etc., achieve high fire resistance, reduce cleaning difficulty and cost low effect

Active Publication Date: 2020-06-05
ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0004] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art, and to provide a method for manufacturing an inducer of a centrifugal pump, which is highly feasible, easy to control, and can cast an inducer without a parting surface, with good molding quality and solved the problem of In the traditional manufacturing method, there are problems of poor casting precision, many surface defects, and low quality of finished products

Method used

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  • A kind of manufacturing method of centrifugal pump inducer
  • A kind of manufacturing method of centrifugal pump inducer
  • A kind of manufacturing method of centrifugal pump inducer

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Embodiment Construction

[0034] Such as Figure 1 to Figure 5 Shown, be the manufacture method of a kind of centrifugal pump inducer of the present invention, comprise the steps:

[0035] (a) Shell manufacturing: Make a wax mold according to the three-dimensional shape of the product, apply the refractory slurry evenly on the wax mold, and form a ceramic layer on the surface of the wax mold. The refractory slurry is made of silica, water and binder. Cheng, low cost, high fire resistance. Repeated application of slurry can increase the thickness of the ceramic layer to ensure sufficient refractory performance. Carry out drying at normal temperature then, add the dewaxing liquid of temperature 90~95 ℃ in the sprue of the ceramic wax pattern after hardening and carry out dewaxing, the composition of dewaxing liquid is 4~6% ammonium chloride solution, and dewaxing time is 20 to 30 minutes, to ensure sufficient dewaxing time, to avoid wax remaining on the inner cavity wall of the mold shell and affecting...

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Abstract

The invention discloses a manufacturing method of a centrifugal pump induction wheel. The manufacturing method comprises the following steps that (a) a shell is manufactured; (b) a liquid is injected;(c) vibration is carried out; (d) adjustment is carried out; and (e) post-processing is carried out. The manufacturing method is high in feasibility and easy to control, the induction wheel without parting surfaces can be cast, the forming quality is good, and the problems that the casting precision is poor, the surface defects are large and the quality of a finished product is low in a traditional manufacturing method are solved.

Description

technical field [0001] The invention relates to a manufacturing method of an induction wheel of a centrifugal pump. Background technique [0002] The inducer is a blade-type rotating machine used to increase the NPSH of the impeller inlet device of the centrifugal pump. It was first used in the engine fuel delivery pump in the aerospace field and other occasions. It has low blade load, small number of blades and suction performance. Good features can increase the medium pressure at the impeller inlet and effectively improve the cavitation at the impeller inlet of the centrifugal pump. [0003] The existing induction wheel has the following defects in the manufacturing process: 1. The traditional casting molding method has the problems of poor casting precision, many surface defects, and low quality of finished products; 2. Machining requires five-axis linkage processing, and the equipment cost is high. , low economic benefit. Contents of the invention [0004] The purpos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/28B22D27/08B22C9/04B22D35/04
CPCB22C9/04B22C9/28B22D27/08B22D35/04
Inventor 郭晓梅施高萍刘学应邱冲
Owner ZHEJIANG UNIV OF WATER RESOURCES & ELECTRIC POWER
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