Zhuochi GL1200KX Rotating Tube Furnace

Overview

The Zhuochi GL1200KX Rotating Tube Furnace is an engineered thermal processing system designed for controlled high-temperature synthesis, annealing, chemical vapor deposition (CVD), and purification under dynamic atmospheric or vacuum conditions. Its core architecture integrates rotational motion, precise programmable temperature control, and configurable gas handling—enabling uniform thermal exposure across solid or powder samples during extended dwell cycles. Unlike static tube furnaces, the GL1200KX employs a motor-driven rotation mechanism (~9 rpm) to eliminate gravitational segregation, promote homogeneous heat transfer, and mitigate thermal gradients along the sample bed. The furnace operates on resistive heating via high-stability 0Cr27Al7Mo2 alloy wire embedded within a low-thermal-mass polycrystalline alumina fiber lining, ensuring rapid thermal response and energy efficiency. A dual-shell structure with phosphate-treated cold-rolled steel housing and integrated forced-air cooling supports safe operation at sustained 1200 °C, while maintaining external surface temperatures below 60 °C under nominal load.

Key Features

• Motorized tube rotation at ~9 rpm, driven by precision减速 motor and supported by sealed ball-bearing mounts for long-term stability and minimal vibration
• Electric linear actuator enables reproducible 15° tilt adjustment, facilitating controlled material flow and gas-solids interaction in CVD or carbothermic reduction experiments
• 50-segment programmable PID controller (LTDE series) with ramp-soak capability, 1 °C resolution, and built-in over-temperature protection (dual-stage)
• Dual-layer insulation system: inner polycrystalline alumina fiber chamber (Ø120 mm × 500 mm) + outer ceramic fiber blanket, achieving <1.5 kW/m² surface heat loss at 1200 °C
• Vacuum-compatible design rated to –0.1 MPa; standard quartz tube (60/100 mm tapered) with stainless steel CF-flanged end caps and calibrated float-type mass flow meters for N₂, Ar, H₂, or forming gas
• Modular gas interface supports optional multi-channel gas mixing manifolds (up to 4 independent lines) with digital pressure monitoring and leak-tight Swagelok fittings
• Front-access hinged door with safety interlock, quick-release flange clamps, and bottom-mounted thermocouple feedthrough for accurate axial temperature profiling

Sample Compatibility & Compliance

The GL1200KX accommodates diverse sample forms—including powders, pellets, fibers, thin films on substrates, and granular precursors—within its 400 mm active heating zone. The rotating motion ensures consistent exposure for batch processing in materials research (e.g., Li-ion cathode calcination, graphene oxide reduction, metal oxide sintering). Its construction complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), while electrical safety meets GB 4706.1–2005 (equivalent to IEC 60335-1). Vacuum and inert-atmosphere configurations support ASTM C1171 (ceramic sintering), ISO 11507 (UV/weathering simulation pre-treatment), and USP environmental conditioning protocols when operated within validated SOPs. All control firmware logs timestamped temperature profiles and alarm events, supporting GLP-compliant documentation under internal audit frameworks.

Software & Data Management

While the LTDE controller operates as a standalone hardware unit, it provides RS485 Modbus RTU output for integration into LabVIEW, MATLAB, or custom SCADA environments. Real-time temperature data, segment progression status, and fault codes are exportable via USB-to-serial adapter in CSV format. The system supports full traceability: each thermal cycle stores start time, operator ID (via manual entry), maximum deviation from setpoint, and duration of any over-temperature event. For regulated environments, optional firmware upgrades enable 21 CFR Part 11–compliant electronic signatures and audit trail generation, including user access logs and parameter change history with IP-based session tracking.

Applications

• Controlled-atmosphere annealing of semiconductor wafers and transparent conductive oxides (TCOs)
• CVD precursor decomposition for carbon nanotube, MoS₂, or perovskite thin-film growth
• Thermal purification of battery-grade transition metal oxides (e.g., Ni-rich NMC, LFP)
• Reductive roasting of metal ores and spent catalyst regeneration under H₂/N₂ mixtures
• High-temperature phase transformation studies in metallurgy and ceramic science
• Inert-gas sintering of advanced ceramics (SiC, AlN) with minimized grain coarsening

FAQ

What is the maximum recommended continuous operating temperature?
The furnace is rated for continuous operation at 1200 °C; prolonged use above this threshold may accelerate heating element degradation and reduce thermal uniformity.
Can the quartz tube be replaced with a ceramic or metallic tube?
Yes—custom tubes (e.g., alumina, molybdenum, or Inconel) can be fitted with appropriate flange adapters and thermal expansion compensation; consult technical support for dimensional validation and gas compatibility.
Is the rotation speed adjustable?
No—the integrated gearmotor delivers fixed ~9 rpm; variable-speed drives are available as factory-installed options upon request.
How is temperature uniformity verified across the hot zone?
Uniformity is specified as ±5 °C over the central 300 mm of the 400 mm heating zone at 1100 °C, measured using a calibrated 3-point thermocouple traverse per ASTM E220.
Does the system include vacuum pump and gas supply?
No—vacuum pumps, gas cylinders, regulators, and purification traps are supplied separately; the furnace includes only inlet/outlet ports and flowmeter assemblies.