Electromagnetic-stirring pressurized centrifugal large-opening vacuum fusion casting furnace

Abstract

The invention discloses an electromagnetic-stirring pressurized centrifugal large-opening vacuum fusion casting furnace, which comprises a furnace body (1), a furnace door (2), a furnace cover (3), a sensor (4), a charging mechanism (5), a centrifugal rotating mechanism (7), an electromagnetic stirrer (8), a vacuum system (9), an inflating and pressurizing system (10) and a medium-frequency power supply (12), wherein the vacuum pumping pipe connecting port of the vacuum system (9) is communicated with the chamber of the furnace body (1); the sensor (4) is arranged in the chamber of the furnace body (1) and the power input end of the sensor (4) is connected with the power output end of the medium-frequency power supply (12); locking mechanisms are arranged on butting surfaces between the furnace body (1) and the furnace door (2) and between the furnace body (1) and the furnace cover (3); and the electromagnetic stirrer (8) is arranged around the rotating executing unit of the centrifugal rotating mechanism (7). The electromagnetic-stirring pressurized centrifugal large-opening vacuum fusion casting furnace has the advantages that the furnace can be used for producing cast ingots and precision castings made of high-nitrogen steel, high-temperature alloy and the like, the components of high-steam-pressure alloy elements can be guaranteed to be accurate, and the effects of mold filling and shrinkage compensation of special-shaped precision castings are ideal.

Description

technical field [0001] The invention belongs to the field of precision casting of special materials such as high-nitrogen steel and high-temperature alloy, and particularly relates to an expandable multifunctional electromagnetic stirring pressurized centrifugal large-opening vacuum casting furnace, which is carried out under vacuum or inflated and pressurized conditions. A variety of precision castings are prepared by intermediate frequency induction melting, pouring, centrifugal rotation, electromagnetic stirring, rapid cooling and other processes. Background technique [0002] When conventional vacuum induction furnaces smelt special alloys, it is difficult to ensure the accurate composition of high vapor pressure alloy elements in the melt and the nitrogen content of high nitrogen content steels. At the same time, in order to reduce the strong physical and chemical reaction between active elements and refractory oxide crucible materials during smelting, a certain amount ...

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Problems solved by technology

The high nitrogen steel is usually obtained under the nitrogen atmosphere of 0.2-2.0MPa, but the higher inflation pressure is limited by the existing design level

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