Positive pressure vertical centrifugal vacuum induction smelting and casting furnace

A vertical centrifugal and vacuum induction technology, applied in furnaces, crucible furnaces, furnace types, etc., can solve the problems of unsatisfactory filling and feeding of castings, achieve good filling and feeding effects, wide application range, drive high torque effect

Inactive Publication Date: 2004-07-14
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for some alloys, even if the pressure is increased to ~0.05MPa during smelting, the above-mentioned problems in smelting cannot be solved.
In addition, for castings with special casting shapes, such as castings with a large slenderness ratio (L / φ), conventional vacuum induction melting furnaces and top casting and bottom casting processes are used, and the filling and shrinkage of castings are not ideal

Method used

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  • Positive pressure vertical centrifugal vacuum induction smelting and casting furnace
  • Positive pressure vertical centrifugal vacuum induction smelting and casting furnace
  • Positive pressure vertical centrifugal vacuum induction smelting and casting furnace

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 As shown, it includes a lower furnace body 6 with a hopper 1 and a crucible 5. The coil 3 is arranged on the outside of the crucible 5, placed in the lower furnace body 6, and electrically connected to the control power supply 12. The hopper 1 is arranged on the upper furnace cover 13. On the side, the upper furnace cover 13 is connected with the hydraulic cylinder through the lifting shaft, the lower furnace body 6 is connected with the vacuum system 18, and the joint between the upper furnace cover 13 and the lower furnace body 6 and the bucket body of the hopper 1 and the cover of the hopper Add a limit snap ring 2 respectively, and install a centrifugal device in the lower furnace body 6;

[0021] Such as diagram 2-1 , 2-2 , 3, the snap ring 2 is connected to the hydraulic cylinder, and its cross-section is a re...

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Abstract

The present invention relates to the manufacture technology of vacuum smelting and casting apparatus, and is especially positive pressure vertical centrifugal vacuum induction smelting and casting furnace. The configuration of the furnace includes feeding bin set on the upper furnace cover connected via elevating shaft to the hydraulic cylinder, lower furnace body, winding set inside the lower furnace body and connected to the control power supply, centrifuge inside the furnace, etc. There are retaining rings set in the joint between the upper furnace cover and the lower furnace body and that between the feeding bin and the feeding bin cover. The furnace may be used in alloy smelting and centrifugal or gravitational alloy casting at vacuum or positive pressure with less reaction between active element and oxide crucible material, accurate alloy components and ideal casting filling and casting-on effect.

Description

technical field [0001] The invention relates to the manufacturing technology of vacuum melting and casting equipment, in particular to a positive pressure vertical centrifugal vacuum induction melting and casting furnace. Background technique [0002] At present, conventional vacuum induction melting furnaces have mature manufacturing technology at home and abroad, but when using this type of furnace to smelt cast alloys, it is usually difficult to ensure the accurate composition of alloy elements in the alloy with high vapor pressure in the liquid state, and high N content (>0.3wt%) N content of stainless steel. Especially when smelting active metal alloys (such as Ti-Al-based alloys, etc.), in order to reduce the strong reaction between the active elements and the refractory oxide crucible material during vacuum induction smelting, generally when melting in a vacuum induction furnace, the furnace is usually lowered. A certain amount of protective atmosphere (such as ~0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/10F27B14/04F27B14/06
Inventor 高明张顺南赵秀娟张晋德马颖澈刘奎李依依
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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