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7KW Induction Melting System w/ Temperature-Controller (25 -80 mm Tube,Up to 1700C) - SP-15TC

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Tube size:
SP-15TC is a compact temperature-controlled induction heating/melting system with complete accessories. Such a complete system includes a 7KW Induction Heater, Quartz Tube with Flanges & Valves, Graphite Crucible & Refractory Assembly, 58L/m Recirculating Water Chiller, Vacuum Pump, and Mobile Cart. It is an ideal tool for growing crystal, melting and sintering new metallic alloys with melting point < 1700ºC (under vacuum or protective gas environment).

Model           EQ-SP-15TC-1       EQ-SP-15TC-3
Temp. Controller 
& Thermocouple

  • Precision digital temperature controller with Automatic PID tunning
  • 30 segments programmable for controlling heating and cooling rate as well as dwell time.
  • Overheating & thermocouple failure protection.
  • +/- 3 ºC temperature accuracy. 
  • Thermocouple: B type Thermocouple with Alumina Sheath, please click to order spares.
  • Continuous Working Temp. Range: 1000ºC~1700ºC
  • Max. Heating Rate: 
    • 10ºC/second (1000ºC-1200ºC)
    • 8ºC/second (1200ºC~1500ºC)
    • 3ºC~6ºC/second (1500ºC~1700ºC)
Induction Heater
  • Working Voltage: 208~240V AC, 50/ 60Hz, Single Phase
  • Working Current: 34 Amp (60A breaker required)
  • Max. Input Power: 7 KW
  • Output Frequency: 30 - 80 kHz Adjustable
  • Duty Cycle: 80%
  • Air Cooling: Rear Fan
  • Protection: Automatic water pressure, over-temperature, and overload protection
  • Refractory Assembling: Complete refractory assembling made of alumina, including bottom crucible support, crucible holder and cover
Graphite Crucible & Refractory liners
(Pls Select at the optional bar)

  • Graphite Crucible size: 0.5"(OD) x 0.26"(ID) x 3.11"(Deep) is available,please choose from option bar.
  • Max. Loading Capacity: Up to 1/2 of the total volume of the graphite crucible, ~3ml.
  • Single-layer refractory liner: 1 mm thick Alumina Blanke
  • High Purity Graphite Crucible: 1"(OD) x 0.59"(ID) x 3.75"(Deep) Crucible is included for heating and melting.
    • Max. Loading Capacity: Up to 1/2 of the total volume of the graphite crucible, ~8ml.
    • Double-layers refractory liner: 1800C Grade Fibrous Alumina Inner + 1600C Grade Mullite Blanket 
Induction Coil:
  • Size: 82.5mm(OD) x 65.5mm(ID) x 73.5mm(H)  
  • Size: 90mm(OD) x 82mm(ID) x 90mm(H)

Sealing Flanges & Quartz Chamber

(Please Select at the options bar)
  • 1" dia Quartz Tube with size: 25mm(OD) x 22mm(ID) x 355mm(L) is available, please choose from option bar. 
  • Top Flange: Stainless steel hinged type flange with 1/4'' thermocouple feedthrough, needle valve, and bard fitting.
  • bottom flange: Stainless steel flange with the needle valve and bard fitting. (Pic bottom-right) 
  • Two-end Open Quartz Tube is included with dimensions of 80mm(OD) x 76mm(ID) x 350mm(L) (click picture below-right to order spare)
  • KF25 right angle valve& clamps and 1000mm long SS bellows are included for connecting to vacuum pump
Pressure Sensor
  • Anti-Corrosive Capacitance Diaphragm Gauge, the measurement range is up to 3.8x10E-5 torr
  • One 24V,1A DC power adapter is included and ready to use. The input voltage for the adapter is 110~240V.
Water Chiller

  • Temperature range: 5 - 30°C
  • Water Flow Rate: 58 L/min
  • Water Tank: 15 Liters made of stainless steel
  • Note: It is recommended to use a specific coolant to get the best performance. It is normal to wait a couple of minutes for cooling down after several trials of heating
  • Note: the input voltage for the water chiller is 220V

Vacuum Pump
  • One 156L/m Rotary Vane Vacuum Pump is included
  • Rate: 156 L/min up to 10e-2 torr vacuum.
  • Max. Power Consumption: 0.4KW / 0.37KW
  • Working Voltage AC 208 -240V, single phase
  • For US customer, 110V Vacuum pump will be included
  • If you choose high-speed turbo-pump, vacuum level can reach 10- 6 torr 
  •             (Hi-Speed turbopump)
Heavy Duty Mobile Cart
  • Structure: Steel Frame Mobile Cart
  • 600mm(L) x 800mm(W) surface for placing Induction Heater & Quartz Tube with Flange
Protective Shield

  • For Non-UL Certified version, a protective shield made of phenolic sheets will be provided.
  • For UL Certified version, a clear protective shield made of polycarbonate will be provided.
  • The protective shield is to be placed around the quartz tube to contain the shooting glass shards if accidents were to happen.
Product Dimensions
  • Induction Heater: 18.5"(L) x 12"(W) x 17"(H) (470mm x 300mm x 430mm)
  • Water Chiller: 18"(L) x 18.7"(W) x 30"(H) (460mm x 475mm x 762mm)
  • Heavy Duty Mobile Cart: 600mm(L) x 800mm(W) x 597mm(H)
  • One year limited warranty with lifetime support
  • Consumable parts such as processing tube, refractory liners, o-rings, and heating coil are not covered by the warranty
  • NRTL Certification is available upon request at extra cost, please contact our sales representatives for a price quote.
  • Certify standards include: 1) Induction heater: UL61010-1 & UL499; 2) Vacuum Pump: UL1450; 3) Water Chiller: UL61010 & UL1995
Operation Manual & Video                            

Application Notes

Click here to learn more about the installation of a gas regulator.
  • The heater will shut down if over output occurs. Please reduce coil cycle number or sample size to keep heater operating under Max power
  • Melting time and temperature are related to materials, the crucible, refractory insulation, etc. If you do not know whether the induction heater can melt your sample or not, please contact our engineer for consulting. Have your alloy's composition, melting point, and quantity to be melted prepared
  • The Induction Melting System is designed for use under vacuum and low pressure < 0.02 MPa / 0.2 Bar/ 3 PSI and The flow rate for gases should be limited to < 200 SCCM ( or 200ml/min
  • Warning: A pressure regulator must be installed on your input gas tank ( click picture left to review ) and have the output gas pressure set below 3 PSI at all times after opening the gas tank with the gas maintained in a continuous flowing condition. Gas build-up with pressure levels exceeding over 3 PSI may cause irreversible damage to the furnace chamber.
  • Never heat the furnace while the gas release valve is closed and a positive pressure condition exists within the furnace chamber. The pressure gauge must be used to closely monitor the chamber condition at all times during the heating process; please open the gas release valve immediately once the chamber pressure has reached over 3 PSI to prevent unforeseeable damages.
  • This furnace can be modified as RTP ( rapid thermal processing  ) and HPCVD system with gas delivery system.  Please click the link below to see how.  If you have any special requirement, please let us know
Net Weight
   300 lbs
Shipping Weight & Dimensions
  • Total 2 Pallets
  • 320 lbs, 48"x40"x45"
  • 230 lbs, 48"x40"x40"

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1. Prices listed online are valid for the US market and who pay by credit card only. There will be extra charges for shipping & handling. Price various from country to country.
2. We may add extra charges for paper order and net30 terms due to extra labor costs.
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