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Precision casting method for graphite mould-ceramic core titanium alloy

A technology of precision casting and graphite type, which is applied in the direction of cores, casting molding equipment, casting molds, etc., can solve the problems of unguaranteed precision of castings, rough casting surfaces, and many casting processes, so as to avoid quality defects, accurate dimensions, The effect of reducing production costs

Inactive Publication Date: 2015-04-29
青岛齐力铸钢有限公司
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AI Technical Summary

Problems solved by technology

[0004] The graphite type-ceramic core titanium alloy precision casting process generally includes preparation of ceramic core, preparation of graphite shell, degassing of graphite shell and ceramic core, etc. In the current titanium alloy precision casting process, the precision of the finished casting cannot be guaranteed , and the surface of the casting is rough, not only the casting process is more, which affects the production capacity, but also the scrap rate is high

Method used

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Embodiment

[0016] The graphite type-ceramic core titanium alloy precision casting method of the present embodiment comprises the following steps:

[0017] (1) Preparation of ceramic core and graphite shell;

[0018] (2) Degassing of graphite shell and ceramic core: The degassing of the ceramic core is to put the prepared ceramic core into a vacuum degassing furnace, heat it to 230°C, keep it warm for 1.5h, and cool it down to room temperature;

[0019] (3) The ceramic core and graphite shell are assembled into a mold according to the casting shell group diagram: the degassing of the graphite shell is to put the prepared graphite shell into a vacuum degassing furnace and heat it to 850°C, keep warm for 7.5h, and cool down to room temperature with the furnace;

[0020] (4) Melting and casting: Put the degassed ceramic core and graphite shell into the vacuum consumable electrode shell solidification furnace for melting and casting according to the titanium alloy melting and po...

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Abstract

The invention discloses a precision casting method for a graphite mould-ceramic core titanium alloy. The precision casting method disclosed by the invention comprises the following steps: preparing a ceramic mould core and a graphite mould shell, then, degassing the graphite mould shell and the ceramic mould core, assembling the ceramic mould core and the graphite mould shell to form a casting mould according to a casting mould shell figure, smelting, and casting. The precision casting method disclosed by the invention has the advantages that aiming at a complex three-dimensional variable-curved surface titanium alloy precise casting, a titanium alloy casting is cast by utilizing the precision casting method disclosed by the invention; therefore, the dimensional accuracy, the internal quality and the surface quality of the casting are improved; the rejection rate of the casting is greatly reduced; the casting cost of the casting is reduced; and the production period of the casting is shortened.

Description

[0001] technical field [0002] The invention belongs to the technical field of casting, and in particular relates to a graphite type-ceramic core titanium alloy precision casting method. [0003] Background technique [0004] The graphite type-ceramic core titanium alloy precision casting process generally includes preparation of ceramic core, preparation of graphite shell, degassing of graphite shell and ceramic core, etc. In the current titanium alloy precision casting process, the precision of the finished casting cannot be guaranteed , and the surface of the casting is rough, not only the casting process is more, which affects the production capacity, but also the scrap rate is high. [0005] Contents of the invention [0006] In order to overcome the above-mentioned technical problems existing in the prior art, the object of the present invention is to provide a graphite-ceramic core titanium alloy precision casting method, which can directly cast graphite-cera...

Claims

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Application Information

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IPC IPC(8): B22C9/10B22C9/02B22C9/12
CPCB22C9/10B22C9/02B22C9/12
Inventor 刘占向
Owner 青岛齐力铸钢有限公司
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