Vacuum induction furnace for casting thin-walled castings and method for casting thin-walled titanium alloy castings
A vacuum induction furnace and thin-wall casting technology, applied in the field of special casting, can solve the problems of poor metal filling ability, short solidification time, limitation, etc. Effect
Inactive Publication Date: 2016-01-13
XI'AN POLYTECHNIC UNIVERSITY
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Problems solved by technology
[0003] The pouring part of the existing vacuum induction furnace has no heating device and heat preservation device. It is difficult to maintain the molten metal in a relatively high temperature range during the pouring process, which makes the filling ability of the molten metal poor and it is difficult to cast high-quality and surface-free products. Thin Wall Metal Castings
When casting thin-walled castings, due to the rapid heat dissipation of the molten metal and the short solidification time, the huge wall tension and viscous resistance limit the smooth progress of the filling process, making it difficult to achieve smooth filling of thin-walled castings, so castings will appear Defects of insufficient pouring or cold shut
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[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0041] Vacuum induction furnace for casting thin-walled castings of the present invention has a structure such as figure 1 As shown, it includes a vacuum induction furnace shell 2, the upper end of the vacuum induction furnace shell 2 is provided with a vacuum furnace cover, the vacuum induction furnace shell 2 is symmetrically provided with a melting chamber and a pouring chamber, and a melting device 1 is arranged in the melting chamber , the pouring cavity is provided with a heating pouring device 3, and the turning space of the melting device 1 is set between the upper part of the melting chamber and the pouring chamber and the upper cover of the vacuum furnace.
[0042] The smelting device 1 includes a crucible and a turning frame. The outer wall of the crucible is provided with an induction coil. The crucible is fixed in the turning fra...
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The invention discloses a vacuum induction furnace for casting thin-wall castings. The vacuum induction furnace comprises a vacuum induction furnace shell. A vacuum furnace upper cover is disposed at the upper end of the vacuum induction furnace shell. A smelting cavity and a pouring cavity are symmetrically formed in the vacuum induction furnace shell. A smelting device is disposed in the smelting cavity. A heating pouring device is disposed in the pouring cavity. A turnover space for the smelting device is reserved between the upper portions of the smelting and pouring cavities and the vacuum furnace upper cover. A wireless thermocouple temperature transmitter is disposed outside the vacuum induction furnace shell. The invention further discloses a method of casting thin-wall titanium alloy castings. The method includes solidifying titanium alloy in a crucible, smelting the alloy into melt according to the vacuum induction principle, turning the crucible to pour the melt into a pouring inner container, setting a heating and insulation device outside the pouring inner container, and casting to obtain a thin-wall titanium alloy casting. The vacuum induction furnace for casting thin-wall castings can be used to cast high-quality thin-wall metal parts with no surface defects.
Description
technical field [0001] The invention belongs to the technical field of special casting, and relates to a vacuum induction furnace for casting thin-walled parts, and also relates to a method for casting thin-walled titanium alloy castings by using the vacuum induction furnace. Background technique [0002] Vacuum induction furnace is a vacuum electric furnace used in the metallurgical industry for melting special alloys such as heat-resistant alloys, magnetic materials, electrical materials and high-strength steel. Its working principle is to use alternating current to act on the induction coil in a vacuum environment to generate Alternating magnetic field, the alternating magnetic field induces an alternating current on the charge - "eddy current", and the charge is heated and melted by "eddy current". Compared with other types of electric furnaces, the vacuum induction furnace has the advantages of fast heating speed, high equipment productivity and less oxidation loss. In ...
Claims
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IPC IPC(8): B22D27/04
Inventor 屈银虎刘新峰王凤梁涛
Owner XI'AN POLYTECHNIC UNIVERSITY