Technicalscheme of vacuum induction melting furnace
I.Overview:
Thevacuum induction melting furnace uses the principle of intermediatefrequency induction heating to melt and vacuum cast metal in avacuum state or under the protection of inert gas.
Thisvacuum induction melting furnace is of intermittent structure witha rated capacity of 500 kg. Under vacuum (or inert atmosphere)conditions, different metals such as super alloys,nickel-based alloys, cobalt-based alloys, stainless steel, steel,iron, copper, aluminum, magnesium, lithium, and titanium alloys canbe smelted.
Inthe smelting process, without affecting the vacuum of the smeltingvacuum chamber, temperature measurement, supplementary feeding,alloy feeding and sampling can be realized. Auxiliary functionssuch as mold heating.
Vacuuminduction melting furnace, vacuum melting, vacuumcasting.
Vacuuminduction melting furnace is complete, mainly composed of meltingcasting chamber, intermediate frequency power supply, inductionmelting furnace, tilting furnace casting system, main feedingsystem, vacuum isolation valve, metal temperature measurement,vacuum system, hydraulic system, electric control system, coolingsystem , Pneumatic system, working platform, etc.
2. Technicalparameters:
1.Technical parameters of smelting furnace:
Ratedcapacity: 500 kg
Metalspecific gravity: 7.8g/cm3
Meltingenvironment: vacuum or inert gas state.
Furnacelining material: suitable for alumina crucible, magnesia, graphitecrucible, metal crucible
Maximumworking temperature: 1750℃. (Working temperature depends on thecrucible material)
Ultimatevacuum: 5.0X10-3Pa 0.0005mbar (emptyfurnace, cold state)
Pressurerise rate: ≤3Pa/h
Powersupply type: thyristor intermediate frequency powersupply
Powersupply: KGPS-500KW-1K
Frequency:1000Hz
Threetemperature measurement methods:
1)Tungsten rhenium thermocouple temperature measurement range20-1600℃, insert into molten metal fortemperature measurement.
2)Infrared temperature measurement. Temperature measurement range700-2000℃ Online temperaturemeasurement.
3)Thermocouple is installed on the wall of graphite crucible or metalcrucible to measure temperature.
Tiltingmethod: hydraulic cylinder pushes to tilt.
Tiltingangle: -10̊-100̊̊
Numberof ingot molds: 1-4
Maximumheight of ingot mold: ≤1600 mm (determined according to userrequirements)
2.Power requirements:
Totalpower: 700KW
Powersupply voltage: 380V±5%, 50-60Hz
Controlvoltage: 220V
3.Cooling water parameters
Coolingwater circulation rate 75m3/h
Thehighest water inlet temperature is 5℃-35℃;
Outletwater temperature <55℃.
Waterinlet pressure 0.25-0.3MPa
