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Setting core for pouring cooling channel and reinforcement setting

A technology of cooling channel and base type, which is applied in the core to cast the cooling channel, and the refractory metal core is used in the field of casting process, which can solve the problems that it is difficult to provide cooling and impossible to reach

Inactive Publication Date: 2006-04-26
UNITED TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the complex shape of many components makes certain areas difficult or impossible to reach through drilling, making it difficult to provide effective cooling

Method used

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  • Setting core for pouring cooling channel and reinforcement setting
  • Setting core for pouring cooling channel and reinforcement setting
  • Setting core for pouring cooling channel and reinforcement setting

Examples

Experimental program
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Embodiment Construction

[0016] The base core of the present invention differs from the refractory metal cores currently used in the casting process in that the base core conforms to the shape of the inner surface of the mold used in the initial stages of casting and is The process has structural strength and shape. Furthermore, as will be described in more detail below, the base core of the present invention consists of mechanically bent fins which in turn integrally form casting cooling channels or holes.

[0017] The structural foldback mandrel may be formed from a metal foil consisting of a refractory metal subjected to a cutting operation. The cutting operation includes cutting a structure into a metal foil via laser machining, photolithography or chemical etching, direct casting or forging, conventional machining, or stamping. In the present invention, a refractory core made of such foil is mechanically bent to fit snugly into the curved portion of a mold whose internal volume corresponds to th...

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Abstract

A method for casting a workpiece comprising the steps of applying a protective coating (21) to a base core (10) the base core comprising, a metal strip (19) comprising a generally planar expanse, a plurality of tabs (17) arranged in a pattern upon the metal strip each of the tabs comprising a base end (11), a terminus end (13), and a tab shaft (15) extending from the base end to the terminus end wherein each of the tabs is angularly displaceable about each the base end of the tabs, injecting a molding substance about the tabs of the base core, encapsulating the base core in a shell (23), removing the molding substance, casting the base core, and removing the base core. <IMAGE> <IMAGE> <IMAGE>

Description

technical field [0001] The present invention relates to a prefabricated refractory metal core and a method of casting cooling channels using such a core. More specifically, the present invention relates to a method of applying such a refractory metal core to a casting process, the refractory metal core is composed of movable tabs (tabs) and a base body, thereby providing a cooling channel and defined Structural cast parts. Background technique [0002] Some refractory metals, including molybdenum (Mo) and tungsten (W), have melting points higher than the usual casting temperatures of nickel and cobalt based superalloys. These refractory metals can be fabricated into forged sheets or formed in necessary dimensions to produce a cooling passage for cooling structures of turbines and combustion chambers, among others. Refractory metal sheets and foils are sufficiently malleable that they can be bent and formed into complex shapes. To increase ductility, the temperature of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/10B22C9/24F02C7/00B22C9/04
CPCB22C9/04B22C9/10
Inventor S·W·博德
Owner UNITED TECH CORP