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System for centrifugally casting high-activity titanium

A technology of centrifugal casting machine and titanium metal, which is applied in the system of titanium aluminide alloy and the field of centrifugal casting of high-activity titanium alloy, which can solve the problem of incomplete filling of the mold

Inactive Publication Date: 2010-09-15
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while the induced magnetic field both heats the metal and keeps the molten metal suspended in the space inside the crucible, once the system power is turned off, the metal slides back into the water-cooled crucible and cools down again before it can be poured
This can lead to incomplete filling of the mold

Method used

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  • System for centrifugally casting high-activity titanium
  • System for centrifugally casting high-activity titanium
  • System for centrifugally casting high-activity titanium

Examples

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Embodiment Construction

[0021] Embodiments described herein generally relate to systems for centrifugal casting highly reactive metals, particularly titanium alloys and titanium aluminide alloys, into clean shaped components, although the following description is not limited thereto.

[0022] According to the following description, as figure 1 As shown, an induction crucible 10 having a body 12 may be provided. The body 12 can be made of any metal with good thermal and electrical conductivity, such as copper, for example. The body 12 may be water cooled to prevent the copper from melting during heating of the crucible. More specifically, copper typically melts at about 1900°F (about 1038°C), while TiAl melts at about 2600°F (about 1427°C), and the copper in the crucible can form a low-melting eutectic with titanium. Water cooling the crucible prevents this from happening. A water cooling inlet 24 and a water cooling outlet 26 may be used to circulate cooling water through a plurality of channels 2...

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PUM

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Abstract

The invention relates to a system for centrifugally casting high-activity titanium. The system comprises a cold-wall sensing crucible, a power supply, a preheated second crucible and a centrifugal casting machine, wherein the cold wall sensing crucible is used for accommodating a titanium material and is provided with a plurality of sensing coils and a removable bottom plate; the power supply is used for heating the titanium material in the crucible so as to acquire molten metal; the preheated second crucible is used for receiving the molten metal when the molten metal falls from the sensing crucible after the bottom plate is removed and the power supply is turned off; and the centrifugal casting machine is used for maintaining the second crucible and accelerating the second crucible so as to centrifugally force the molten metal to enter a mould for generating a casting member.

Description

technical field [0001] Embodiments described herein relate generally to systems for centrifugal casting of highly reactive metals. More specifically, the examples herein generally describe systems for centrifugal casting of highly reactive titanium alloys, and particularly titanium aluminide alloys. Background technique [0002] Turbine engine designers are constantly seeking new materials with improved properties to reduce engine weight and achieve higher engine operating temperatures. Titanium alloys (Ti alloys), and especially titanium aluminide-based alloys (TiAl alloys), combine low temperature mechanical properties such as room temperature ductility and toughness with medium and high temperature strength and creep resistance. For these reasons, TiAl alloys are expected to replace the nickel-based superalloys currently used to manufacture most turbine engine components. [0003] Vacuum arc remelting (VAR) is a technique commonly used to melt Ti alloys. VAR typically ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/12B22D21/02B22D21/04
Inventor T·J·凯利M·J·韦默
Owner GENERAL ELECTRIC CO