Self-casting vacuum arc melting furnace

The utility model discloses a self-casting vacuum arc melting furnace which comprises a vacuum melting chamber, wherein the vacuum melting chamber is arranged on a machine frame. The front side of the vacuum melting chamber is provided with a material charging door. Three layers of water cooling electrodes are arranged on the vacuum melting chamber, and are hermetically arranged on the center of the upper top through a universal adjusting ball valve which is arranged on the vacuum melting chamber. The rear side of the vacuum melting chamber is provided with a high-vacuum pumping pipeline, and the high-vacuum pumping pipeline is connected with a turbine molecular pump. The lower part of the vacuum melting chamber is provided with a vacuum self-casting device to case samples. By arranging the material charging door on the vacuum melting chamber, the equipment simplifies the structure, decreases the cost, and is convenient and practical. By adopting the turbine molecular pump of 600 L/s and the direct-connected