The zone melting furnace OTF-1100-CBZ is a compact crystal growth system for CZ, Bridgman, and zone melting up to 1000°C. The precision pulling & rotation mechanism is built on a compact vertical tube furnace with 1" quartz tube and vacuum-sealed flange, which can pull single crystal from a melt in the crucible via seed or downward to grow the crystal via with a capillary. Applications: zone melt purification, directional solidification, or CZ, Bridgman, and zone melting single crystal growth for metallic material

Specifications:

Ring Heater	One compact ring heater made of MoSi2 is cast into fibrous alumina  with  SS case  used for zone melting Max. working temperature is 1000ºC The ID of the ring heater is 30 mm Heating zone length is about 6 mm The spare heating ring is available upon request at the extra cost
Power	Voltage: AC 220 V, Single Phase 50/60Hz 1 KW
PLC Control	Touch Screen, User-Friendly Parameters: single crystal pulling speed, rod rotation speed, and working temperature
Working Temperature	MoSi2 Resistance Heating with resistance heating Maximum Working Temperature: 1000°C ( <1hr) Constant heating temperature: 950ºC
Tube and Flange	1" O.D. high purity quartz tube  ( smaller tube is available upon request ) Top flange with KF 25 vacuum connection port, mechanical pressure gauge, adjustable high-pressure relief valve Bottom stainless steel flange with the gas delivery port and 1/4" Feedthrough for the thermal couple One S type thermal couple on the bottom of the crucible for temperature control
Zone Melting Mechanism	Zone melting or directional solidification is by moving the crucible in a vacuum-sealed tube and retractable bellows to pass the heating ring. Moving speed: 0 - 65 mm/hour  Tube rotation speed: 0 - 100 RPM, adjustable The travel distance: 0 - 65 mm Servo motor controlled Customized the pulling and rotation speed is available at extra cost
Vacuum Pump (Not included)	10-2 torr via dual-stage mechanical vacuum pump (bottom right picture) 10-5 torr via Turbopump (bottom left picture) The vacuum pump is optional. Please click here to choose a vacuum pump.
Compliance	CE certified NRTL certification is available upon request at the extra cost
Warranty	One Year limited warranty with lifetime support
Dimension	Vertical furnace: 270 mm x 450 mm x 1050 mm Control unit: 480 mm x 360 mm x 250 mm
Net Weight	75 kg 165 lbs
Demonstration Video
Application note	In order to zone melting for metallic materials, you may make a solid rod sample from powder before zone melting via CIP as the link below Please review the article “Broad temperature plateau for high ZTs in heavily doped p-type SnSe single crystals " published in  Energy＆Environmental Science for reference