Aluminum alloy impeller centrifuge casting method

An aluminum alloy impeller and centrifugal casting technology, applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of poor surface quality of castings, low dimensional accuracy, and high production costs, and achieve high production costs. More, the effect of improving production efficiency

Inactive Publication Date: 2015-05-20
青岛齐力铸钢有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a centrifugal casting method for an aluminum alloy impeller, which solves the problems of high production cost, poor casting surface quality and low dimensional accuracy existing in the existing casting method

Method used

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Embodiment

[0016] The aluminum alloy impeller centrifugal casting method of the present embodiment comprises the following steps:

[0017] (1) Preparation of the impeller wax mold: prepare the impeller wax mold according to the shape and size of the impeller, and then hang sand and dewax the impeller wax mold to obtain the impeller shell;

[0018] (2) Wax mold preheating: put the impeller shell obtained in step 1 into a resistance furnace for preheating, the preheating temperature is 450°C, and the preheating time is 4 hours;

[0019] (3) Tool treatment: Brush the surface of the tool in contact with the molten aluminum during casting and smelting with a water-based paint. The above-mentioned water-based paint is a solution of zinc oxide, talcum powder and water glass, and then put the above-mentioned tools into a resistance furnace for drying. The temperature is 350°C, and the drying time is 3 hours;

[0020] (4) Centrifugal casting: Fix the preheated impeller shell in step (2) on the c...

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Abstract

The invention discloses an aluminum alloy impeller centrifuge casting method. The method comprises the following steps: making an impeller wax mold; preheating the wax mold; carrying out tool treatment; melting alloy selected for an impeller; melting Al7Si aluminum ingots; adding an Al-5Ti intermediate alloy, and melting; adding a pure Mg block, and melting; adding an Al-10Sr intermediate alloy, and melting; adding the Al-10Sr intermediate alloy into a graphite crucible, stirring a melt in the graphite crucible, and carrying out degassing refining; and carrying out centrifuge casting to realize mold filling and solidification of the above alloy melt under the action of centrifugal force, solidifying for a certain period of time, demolding, and cleaning the obtained casting. The problems of high production cost of present casting methods, and poor quality and low dimension precision of the surfaces of castings are solved in the invention.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a centrifugal casting method of an aluminum alloy impeller. [0003] Background technique [0004] The casting of aluminum alloy impeller has high requirements on the size of the impeller. The current flange casting process has the problems of high production cost, poor casting surface quality and low dimensional accuracy. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art field, the object of the present invention is to provide a centrifugal casting method for an aluminum alloy impeller, which solves the problems of high production cost, poor casting surface quality, and low dimensional accuracy existing in the existing casting method. [0007] The aluminum alloy impeller centrifugal casting method provided by the invention comprises the following steps: [0008] (1) Prep...

Claims

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Application Information

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IPC IPC(8): B22C9/04B22D13/00B22D13/10
CPCB22C9/04B22D13/00B22D13/10
Inventor 刘占向
Owner 青岛齐力铸钢有限公司
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