Ceramic mold shell for casting single crystal blades and manufacturing method thereof

A technology of ceramic formwork and single crystal blades, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve problems such as casting defects of ceramic formwork, prevent heat from being dissipated downward, reduce energy consumption, and improve temperature gradients Effect

Inactive Publication Date: 2019-10-11
深圳市万泽中南研究院有限公司 +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The invention provides a ceramic formwork for casting single crystal blades and a manufacturing method thereof, aiming to solve the problem of casting defects of the existing ceramic formwork

Method used

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  • Ceramic mold shell for casting single crystal blades and manufacturing method thereof
  • Ceramic mold shell for casting single crystal blades and manufacturing method thereof

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] The invention provides a ceramic formwork, which is used for casting of aero-engine or gas turbine superalloy blades, such as figure 2 As shown, when pouring, it is placed on the top of the water-cooled copper plate 5. The ceramic formwork 1 includes a plurality of blade cavities 2 for casting blades, which are arranged on the outer periphery of the center column 3 to form a ring-shaped structure. The hollow area 4 of the ceramic formwork 1 of the structure is filled with heat insulating material to form a heat insulating plug 6, so as to reduce the heat loss from the hot area to the cold a...

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Abstract

The invention is applicable to the technical field of casting, and provides a ceramic mold shell for casting single crystal blades and a manufacturing method thereof. The hollow area of the ceramic mold shell of an annular structure is filled with a heat insulation material to form a heat insulation plug, so that the heat loss of the hot zone in the directional solidification furnace to the cold zone is reduced, the temperature gradient of the solidified front edge in the casting is improved, the casting defect is reduced, and the quality of the single crystal and the directional casting is improved.

Description

technical field [0001] The invention belongs to the technical field of casting, and in particular relates to a ceramic mold shell for casting a single crystal blade and a manufacturing method thereof. Background technique [0002] In order to improve the performance of aero-engines and industrial gas turbines, high-temperature alloy blades often need to be made into columnar or single-crystal structures by precision casting and directional solidification. In the vacuum furnace, the high-temperature alloy is melted and poured into the ceramic formwork with the lower opening and placed on the water-cooled copper plate. The molten metal is first solidified by the chilling of the water-cooled copper plate, and the heat is transmitted downward and the ceramic formwork descends. Entering the cooling zone, the superalloy melt in the ceramic mold shell directional solidifies from the bottom to the top, and the crystal grains grow from the bottom to the top to form a vertical columna...

Claims

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Application Information

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IPC IPC(8): B22C9/22B22C9/04B22D27/04
CPCB22C9/04B22C9/22B22D27/045
Inventor 马德新崔树森冯杰徐维台
Owner 深圳市万泽中南研究院有限公司
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