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1500ºC Bridgman Furnace for Directional Solidification of Polycrystalline Ingots - EQ-SKJ-BG1500-LD

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Item Number: EQ-SKJ-BG1500-LD

EQ-SKJ-BG1500 is a 1500°C max. Bridgman furnace for directional solidification of Polycrystalline Ingots upto 1'' diamerter. Three individual controlled heating modules & speed adjustable cooling fans at furance exit provide advantages to create larger temp. gradient at the melt/crystal interface as needed. Automatic crucible retrieving system enables the most convenient way for sample loading/unloading. Optional crucible rotation stage can be added at additional cost for single crystal ingot growth. 

Basic Specifications:

Advanced Features

  • Three stacked heating modules with independent temperature measurement and control enable the flexibility of creating various temperature gradients along the length of the heated area;
  • Two speed adjustable cooling fans with TC at the exit of the furnace allow the better control over the temperature gradient at the melt/crystal interface; 
  • φ25mm Alumina sample pulling stage with TC attachment for accurate temperature monitoring of the crucible on top and generate instant temperature plot;
  • Electric elevated crucible stage enable an automatic and convenient sample loading / retrieving;
  • The use of 2'' O.D mullite tube provides better thermoshock resistance upto 1500C when larger thermogradient is desired
Power Requirements
  • 220VAC Three phase 50/60Hz
  • 14KW
Max,  Working Temperature  1500°C -  SiC heating elements
 Processing Tube & Flange
  • USA Quality Mullite (60% Al2O3 +38% SiO2) Tube, Size: 50.4 mm OD  x 44.5 mm ID x 1200 mm L
  • A pair of 2'' stainless steel flange is connected to both end of the processing tube which allows for inert gas purging or vacuum during the crystal growing process
Sample Stage
  • φ25X20mm H Alumina Sample Stage
  • B type thermocouple insert from the bottom of the sample stage for accurate temperature measurement of the crucible
Crucible Retriving Mechanism
  • Automatic sample retrieving system for easy crucible loading / unloading, 
  • 700mm max. travel distance
 Heating Zones Three heating zones with independent temperature measurement and control
  • Three zones: 300mm (12") long in total, please click bottom left picture for more size info;
  • 100mm long for each zone, please click bottom right picture for more size info;
Temperature Control
  • Three PID temp. controller with 30 programmable segments for precise control of heating, cooling rate and dwell time.
  • Built-in overheating & broken thermocouple protection.
  • +/- 2 ºC temperature accuracy.
  • Three B type thermocouples (one for each zone).
  • Temperature gradient along the length of heated area < 7.5ºC/mm
  • Heating & Cooling rate: <10ºC/mm
Cooling Fans One speed adjutable cooling fans are installed at the bottom exit of the furnace
 Furnace Travel Distance & Speed
  • As the furnace heater moves upward, the crucible is moving toward the bottom exit of the furnace where the lower temperature is seen. 
  • The maximum travel distance of the furnace heater is 360 mm. 
  • Travel speed: 0.15-15 mm/hr
 Vacuum Pump (Not included)
  • 10E-2 torr via dual stage mechanical vacuum pump (bottom right picture)
  • 10E-5 torr via Turbopump (bottom left picture) 
  • The vacuum pump is optional. Please click here to choose a vacuum pump. 
Dimension 1080mm L X 880mm W X2980mm H
Shipping Weight & Dimensions
  • 1) 3225 lbs, 83x48x86"
  • 2) 751 lbs, 49x41x58"
Installation Video     
Optional & Related Products
  • For single crystal growth, the rotation of crucible stage is needed, additional cost will apply. Please contact our engineering team for more information.
  • A board selections of crucible materials: Boron Nitride; Alumina; Zirconia; Graphite....
         Graphite Crucible 
                 Alumina                Boron Nitride    Graphite             Zirconia

  • Al, Ag, Au, Cu, Mg, Ni 

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