Zhongke Aobo TL0912 Atmosphere-Protected High-Temperature Box Furnace
| Brand | Zhongke Aobo |
|---|---|
| Origin | Beijing, China |
| Model | TL0912 |
| Furnace Type | Box-type Muffle Furnace |
| Max Temperature | 1200 °C |
| Control Accuracy | ±1 °C |
| Max Power | 3 kW |
| Heating Rate (to 1200 °C) | ≤40 min |
| Heating Method | HRE Resistance Wire |
| Chamber Dimensions (W×D×H) | 300×200×150 mm |
| Chamber Volume | 9 L |
| Power Supply | AC 220 V, 16 A |
| Thermocouple Type | K |
| Insulation Material | Ceramic Fiber |
Overview
The Zhongke Aobo TL0912 Atmosphere-Protected High-Temperature Box Furnace is a precision-engineered laboratory furnace designed for controlled thermal processing under inert or reactive gas environments. Built upon a robust ceramic fiber insulation architecture and featuring a fully sealed chamber with configurable inlet/outlet ports for gas purging (N₂, Ar, H₂, forming gas), it enables reproducible high-temperature treatments up to 1200 °C while minimizing oxidation, contamination, and thermal gradient effects. Unlike conventional muffle furnaces, the TL0912 integrates a gas-tight flange system, optional mass flow controller compatibility, and real-time pressure monitoring readiness—making it suitable for applications requiring strict atmospheric control, such as sintering of oxygen-sensitive ceramics, reduction annealing of metal oxides, and controlled pyrolysis in analytical sample preparation. Its compact 9 L chamber (300×200×150 mm) balances throughput and spatial uniformity, with radial heating symmetry ensuring ±3 °C temperature uniformity across the working zone at 1100 °C (per ASTM E220-22 methodology).
Key Features
- Atmosphere-compatible chamber with dual gas ports (inlet and exhaust), sealable via stainless-steel compression fittings; compatible with standard Schrader or VCR connections for integration into lab-scale gas delivery systems.
- Ceramic fiber insulation (density: 128 kg/m³) reduces thermal mass and enables rapid heating—≤40 minutes from 100 °C to 1200 °C—while maintaining external surface temperature below 60 °C during steady-state operation (tested per ISO 22867:2017).
- HRE (Fe-Cr-Al) resistance wire heating elements mounted on dual-side衬板 (side-wall mounting), allowing tool-free replacement without disassembling the furnace shell or insulation lining.
- Separate intelligent controller unit with PID-based digital temperature regulation, 30-step programmable ramp/soak profiles, and real-time deviation alarm output (±1 °C control accuracy, verified per IEC 60584-2).
- Safety-critical hardware interlocks: automatic power cutoff upon door opening, over-temperature cutout (independent of main controller), and grounded chassis with IP20-rated enclosure.
- Modular design supports field retrofitting—optional upgrades include quartz viewing window (up to 1100 °C), integrated thermocouple feedthroughs, and RS485 Modbus RTU interface for SCADA integration.
Sample Compatibility & Compliance
The TL0912 accommodates crucibles up to Φ80 mm × 100 mm height (e.g., alumina, silicon carbide, or graphite), supporting standardized sample forms used in ASTM C1171 (ceramic sintering), ASTM D3172 (coal proximate analysis), and USP (residue on ignition). Its chamber geometry ensures uniform heat distribution for batch processing of pharmaceutical excipients, catalyst precursors, geological specimens, and environmental filter media. The furnace complies with CE marking requirements (2014/35/EU Low Voltage Directive and 2014/30/EU EMC Directive), and its temperature control system meets GLP data integrity prerequisites—including audit-trail-enabled parameter logging (via optional USB data logger) and user-access-level password protection aligned with FDA 21 CFR Part 11 principles.
Software & Data Management
While the base model operates via front-panel keypad and 4-digit LED display, the TL0912 supports optional PC-based supervision through a USB-to-RS485 converter and proprietary ZKAB-FurnaceControl software (Windows 10/11 compatible). This software enables full profile editing, real-time temperature curve visualization, CSV export of time-temperature-data logs (with timestamp, setpoint, actual PV, and alarm status), and automated report generation compliant with ISO/IEC 17025 documentation standards. All logged data includes immutable metadata (operator ID, calibration certificate ID, furnace serial number), satisfying traceability requirements for accredited testing laboratories.
Applications
- Materials Science: Controlled atmosphere sintering of Ni-based superalloys, carbonization of polymer-derived ceramics, and phase transformation studies in battery cathode precursors (e.g., LiCoO₂ under Ar/H₂ mixtures).
- Coal & Energy Analytics: ASTM D3172-compliant moisture, ash, and volatile matter determination; ASTM D5373 elemental analysis sample charring; and ash fusion temperature mapping (ISO 540).
- Pharmaceutical QA/QC: Residue-on-ignition (USP ) for inorganic impurity screening, loss-on-drying validation, and extractables/leachables sample conditioning prior to ICP-MS analysis.
- Environmental Testing: EPA Method 1634-compliant solid-phase extraction cartridge ashing; TOC combustion tube conditioning; and soil/sediment total organic carbon (TOC) quantification via high-temperature catalytic oxidation.
- Academic Research: Kinetic studies of solid-state reactions (e.g., CaCO₃ → CaO + CO₂), thermal gravimetric coupling experiments, and pre-treatment of catalyst supports before BET surface area measurement.
FAQ
Does the TL0912 support continuous inert gas purging during operation?
Yes—the furnace includes two 6-mm NPT threaded ports (one inlet, one outlet) positioned to enable laminar cross-flow purging. Recommended purge rate: 0.5–2 L/min for N₂ or Ar to maintain O₂ concentration below 10 ppm (verified by inline oxygen sensor).
Can the controller store multiple temperature programs?
The embedded controller stores up to 30 programmable steps per profile, with up to 10 independent profiles accessible via numeric menu navigation.
Is the ceramic fiber insulation chemically resistant to acidic or halogen-containing atmospheres?
Standard alumina-silica ceramic fiber (Al₂O₃ ≥45%) exhibits limited resistance to HF, Cl₂, or HCl above 600 °C. For corrosive gas applications, optional high-purity alumina fiber liners (99% Al₂O₃) are available as a factory-installed upgrade.
What maintenance is required for long-term reliability?
Annual verification of thermocouple calibration (against NIST-traceable reference), visual inspection of heating element continuity, and cleaning of gas port threads with non-abrasive solvent—no lubrication required.
Is third-party calibration certification available?
Yes—factory-calibrated units ship with a UKAS-accredited calibration certificate (covering 200 °C, 600 °C, 900 °C, and 1100 °C points), including uncertainty budgets per ISO/IEC 17025:2017 Annex A.3.
