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Continuous suspension type directional solidification casting device of cold crucible

A technology of directional solidification and cold crucible, which is applied in the field of cold crucible directional solidification devices, can solve the problems of not being able to cast blades with complex shapes, and achieve the effects of improving processing efficiency and avoiding chemical reactions

Active Publication Date: 2013-02-20
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the efficiency of the existing cold crucible directional solidification device, and to overcome the defect of not being able to cast blades with complex shapes, the present invention provides a suspension type cold crucible continuous filling directional solidification casting device, which can better solve the above problems

Method used

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  • Continuous suspension type directional solidification casting device of cold crucible
  • Continuous suspension type directional solidification casting device of cold crucible
  • Continuous suspension type directional solidification casting device of cold crucible

Examples

Experimental program
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Effect test

Embodiment 1

[0057] Continuous suspension cold crucible directional solidification casting device, including closed furnace body, feeding rod, material rod, water-cooled copper crucible, induction coil, pull rod, crystallizer, coolant material, the upper end of the material rod located in the furnace body is fixed on On the lower end of the feed rod, the lower end of the material rod extends into the water-cooled copper crucible, which has a slotted structure, and the upper induction coil is wound on the outside of the water-cooled copper crucible to excite the alternating magnetic field and diffuse into it through the slot. In this way, the hot zone required for the processing process is generated. The crystallizer containing the coolant material is placed directly below the water-cooled copper crucible, and the drawing rod is placed in the crystallizer. The inner wall of the water-cooled copper crucible is provided with a trapezoidal boss. The trapezoidal boss is placed in the induction a...

Embodiment 2

[0066] The difference between this embodiment and Embodiment 1 is that, as figure 2 As shown, the trapezoidal boss only has an upper inclined surface. Others are the same as in Embodiment 1.

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Abstract

The invention provides a continuous suspension type directional solidification casting device of a cold crucible. Heat-resisting lightweight titanium-aluminum alloy vanes are badly needed in transportation and energy industries, and a traditional directional solidification device causes severe impurity pollution and damages plasticity and toughness of the vanes. The directional solidification casting device aims at improving the efficiency of the directional solidification device of the cold crucible and overcomes the shortcoming that the existing casting device cannot be used for casting vanes with complex shape. A trapezoid boss is annularly arranged on the inner wall of the water cooling copper crucible, an induction coil is wound around the outer portion of the crucible, the boss is placed in the coil, an excited alternating current magnetic field is diffused inwards through crucible gaps to generate a hot area to achieve suspension rod liquid feeding of material rods. The device further comprises a drawing-pulling rod in a crystallizer, a mould casing with cross section being vane-shaped is fixed on the upper end face of the drawing-pulling rod, and the mould casing is heated by an outer induction graphite sleeve. The continuous suspension type directional solidification casting device achieves suspension melting liquid feeding, sequential filling and directional solidification of metal liquid, avoids chemical reaction of a titanium-aluminum alloy melt body and the mould casing and improves directional solidification processing efficiency of titanium-aluminum alloy.

Description

technical field [0001] The invention relates to a cold crucible directional solidification device. Background technique [0002] 1. Background and significance of the invention [0003] With the rapid development of social economy, there is an urgent demand for materials and processing technologies with higher performance and special functions. As a sign of the times, aerospace, petrochemical and electric power industries are in great need of high temperature resistance, low density, ultra- Lightweight new material with high strength and high modulus of elasticity. Due to its low density, good oxidation resistance and excellent high-temperature performance, TiAl-based alloy is a potential material for high-temperature components. Especially TiAl-based alloys with full lamellar structure (room temperature structure is γ-TiAl+α-Ti 3 Al duplex structure) shows good comprehensive mechanical properties and has attracted people's attention. [0004] For engine materials, TiAl-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D27/02
Inventor 丁宏升李明亮王永喆陈瑞润郭景杰
Owner HARBIN INST OF TECH
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