Refractory metal smelting furnace

Smelting capacity: 1kg, 3kg, 5kg (weight of niobium smelter shall prevail)
Ultimate vacuum: 6.7×10-3
Furnace: double stainless steel

species:

≥ 2100 ℃: can smelt metal Cr, Zr, V, Pd, Pt, Rh, and alloy
≥ 2600 ℃: can melt the metal Hf, Nb, Ru, Ir, and alloys
≥3100 ℃: And the alloy Mo, Ta and alloys.

Refractory metal melting furnace Features:
Used to improve the melting temperature of the electromagnetic field design, using a special high temperature can withstand cold crucible equipment

Cold crucible induction melting equipment Description:
Cold crucible device is cold crucible induction melting equipment core components, the main body is water-cooled copper crucible. In order to allow the electromagnetic field to enter the interior of the crucible, the crucible is divided into 20 to 30 flakes along the axial portion. In each flap, there is a cooling system for the water supply circuit so that the crucible withstands a high temperature of 2000 to 3000C.
At present, focus on improving the levitation force technical measures, that is, increased levitation force, then the molten bath and the inner wall of the crucible to reduce the heat taken away by the crucible significantly reduced. The levitation force increases with the increase of the induced current and the number of divisions of the crucible, and the optimal parameters are set according to the test results. The test results show that when the inner diameter of crucible is 800mm, the maximum levitation force is obtained when the frequency of induction power is 10 ~ 30KHZ. In order to achieve the best process results, under the condition of constant power supply, reduce the diameter of the crucible and the induction coil, and increase the density of the magnetic flux in the crucible; the taper crucible and the induction coil with the bottom are used to increase the levitation force, Reduce the contact between the molten pool and the bottom of the crucible; and install a water-cooled copper crucible cover over the crucible to reduce the heat radiation loss. The lid of the crucible must be slitted so that the magnetic flux can pass through. The crucible water circuit design and crucible cooling enhancement have actually become the key factors to increase the melting temperature.