Hefei Kejing KSL-1200X-H Hybrid Box-Tube Furnace

Overview

The Hefei Kejing KSL-1200X-H Hybrid Box-Tube Furnace is an engineered solution for laboratories requiring simultaneous thermal processing under multiple atmospheres—air, inert gas, reducing gas, or high vacuum—within a single integrated platform. Its dual-mode architecture combines a 7.2 L box-type chamber and two independently sealable quartz tube zones, enabling parallel experiments with distinct environmental controls. The furnace operates on the principle of resistive heating via top- and side-mounted Kanthal A1 or similar high-stability alloy elements, embedded within a high-purity alumina fiber insulation matrix coated with sintered alumina to minimize thermal loss and enhance radial and axial temperature uniformity across the working zone. Designed for reproducible high-temperature treatments up to 1200 °C, it meets fundamental requirements for ceramic sintering, catalyst activation, thin-film annealing, powder metallurgy pre-treatment, and solid-state reaction studies where precise thermal history control is critical.

Key Features

• Hybrid configuration supports concurrent box-mode (ambient air) and tube-mode (vacuum/inert/reducing atmosphere) operations without cross-contamination.
• Dual-shell housing with integrated forced-air cooling maintains external surface temperature below 60 °C during continuous operation at 1200 °C—ensuring operator safety and benchtop compatibility.
• High-emissivity alumina fiber insulation (≥99.8% Al₂O₃) with ceramic coating delivers rapid thermal response and stable isothermal profiles; measured uniformity is ±1 °C within the central 60% of the chamber volume per ASTM E220-21 calibration guidelines.
• Vacuum-ready design includes two KF25 stainless-steel flanges with built-in mechanical vacuum gauges and 1/4″ armored thermocouple feedthroughs for direct in-tube sample temperature monitoring—critical for process validation under non-oxidizing conditions.
• Integrated safety interlock cuts power upon door opening, preventing accidental exposure to high-temperature surfaces or thermal shock to samples.
• Standard 0.5″ fused quartz viewport enables real-time visual observation of sample behavior (e.g., phase transitions, melt flow, or discoloration) without breaking vacuum or atmosphere.

Sample Compatibility & Compliance

The KSL-1200X-H accommodates diverse sample geometries—from crucibles and boats to wafers and pellets—within its 300 × 200 × 120 mm chamber or Φ50 × 600 mm quartz tubes. Quartz tubing permits optical access and compatibility with halogen, hydrogen, argon, nitrogen, and forming gas environments. For regulatory-sensitive applications—including ISO 17025-accredited labs or GLP-compliant materials development—the system supports traceable temperature profiling via optional Eurotherm 3504 controller with 21 CFR Part 11–compliant audit trail when paired with validated software. All electrical components exceeding 24 V DC/AC are UL, MET, and CSA certified; CE marking confirms conformity with EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. Upon request and client-funded third-party assessment, individual units can be certified to TÜV SÜD or CSA Group standards for installation in regulated industrial R&D facilities.

Software & Data Management

Standard FA-YD518P-AG controller provides 30-segment programmable ramp-soak profiles, self-tuning PID logic, and dual alarm channels (over-temperature and thermocouple open-circuit). For automated data capture and long-term trending, the optional MTS02-Y PC interface software enables real-time temperature curve visualization, timestamped CSV export, and comparative overlay of multiple runs—essential for DOE-driven thermal optimization. When configured with the Eurotherm 3504, the furnace integrates natively into LabVIEW-based test systems via Modbus RTU or Ethernet/IP, supporting synchronized acquisition with external sensors (e.g., mass spectrometers or dilatometers) in multi-instrument workflows.

Applications

• Ceramic and composite sintering under controlled oxygen partial pressure
• Graphene oxide reduction and MXene synthesis under Ar/H₂ atmospheres
• Thermal gravimetric analysis (TGA) pre-conditioning of battery cathode precursors
• Pre-oxidation of Ni-based superalloys prior to hot isostatic pressing
• Low-temperature annealing of perovskite solar cell layers in nitrogen gloveboxes
• Calibration reference furnace for Type K or S thermocouples per IEC 60584-2

FAQ

Can this furnace operate continuously at 1200 °C?
Yes—rated for continuous duty at maximum temperature, provided ambient conditions remain within 5–35 °C and relative humidity ≤80% non-condensing, with adequate ventilation clearance (≥150 mm on all sides).

Is the quartz tube compatible with hydrofluoric acid vapor?
No—fused quartz is susceptible to etching by HF-containing atmospheres; alumina or mullite tubes are recommended for such chemistries.

What vacuum level is achievable with the standard mechanical pump?
Approximately 10⁻³ Torr (1.3 × 10⁻¹ Pa); for ultra-high vacuum applications (e.g., CVD precursor pyrolysis), a turbo-molecular pumping station is required to reach 10⁻⁵ Torr.

Does the furnace support remote monitoring via Ethernet?
The base controller uses RS-232 (DB9); Ethernet connectivity requires the optional Eurotherm 3504 with built-in Modbus TCP or the MTS02-Y software running on a local host PC with network-shared access.

Are calibration certificates included with purchase?
A factory-assembled NIST-traceable temperature uniformity report (per ASTM E220) is available upon request at additional cost; on-site IQ/OQ documentation packages may be commissioned separately for GxP environments.