KJ GROUP KSL-1400X-A2 High-Temperature Box Furnace (8 L, 1400 °C)
| Brand | KJ GROUP |
|---|---|
| Origin | Anhui, China |
| Model | KSL-1400X-A2 |
| Max Temperature | 1400 °C (continuous operation ≤1300 °C) |
| Temperature Uniformity | ±1 °C |
| Power Supply | AC 220 V, 50 Hz, 5.2 kW |
| Heating Rate | 10 °C/min (to max temp) |
| Heating Element | Silicon Carbide (SiC) Rods |
| Chamber Dimensions | 200 mm × 200 mm × 200 mm (8 L) |
| External Dimensions | 550 mm × 660 mm × 820 mm |
| Net Weight | 120 kg |
| Thermocouple | Type S (Platinum–Rhodium/Platinum) |
| Control System | 30-Stage PID Programmable Controller |
| Insulation | High-Purity Alumina Polycrystalline Fiber |
| Interior Coating | US-Imported Alumina Reflective Coating |
| Safety Certification | CE Compliant |
Overview
The KJ GROUP KSL-1400X-A2 is a precision-engineered high-temperature box furnace designed for controlled thermal processing in research laboratories, materials science facilities, and quality control environments. Operating on the principle of resistive heating via silicon carbide (SiC) rod elements, it delivers stable, repeatable temperature profiles up to 1400 °C — with continuous operation rated at ≤1300 °C to ensure long-term thermal stability and component longevity. The furnace employs a Type S (platinum–rhodium/platinum) thermocouple for high-accuracy temperature sensing across its operational range, coupled with a 30-segment programmable PID controller that enables precise ramp-hold-cool sequences. Its double-layer steel housing — insulated with high-purity alumina polycrystalline fiber and internally coated with a US-sourced reflective alumina layer — achieves surface temperatures below 60 °C under full load, enhancing operator safety and energy efficiency.
Key Features
- Double-walled stainless steel construction with advanced thermal insulation, limiting external surface temperature to <60 °C during operation.
- High-density alumina polycrystalline fiber insulation lining, offering low thermal conductivity and excellent thermal shock resistance.
- Internally applied US-imported alumina reflective coating on the furnace chamber walls, improving radiant heat transfer efficiency and extending refractory life.
- 30-stage programmable PID temperature controller supporting complex thermal profiles — including multi-ramp, hold, and cooling segments — with user-defined setpoints and dwell times.
- Side-opening door design with integrated ceramic fiber gasket for improved sealing integrity and ease of sample loading/unloading.
- CE-certified electrical architecture compliant with EN 61000-6-3 (EMC) and EN 61000-6-2 (immunity) standards; meets essential health and safety requirements per EU Machinery Directive 2006/42/EC.
Sample Compatibility & Compliance
The KSL-1400X-A2 accommodates standard crucibles (e.g., alumina, quartz, graphite) and ceramic boats within its 200 mm × 200 mm × 200 mm (8 L) isothermal zone. It is suitable for sintering, ashing, annealing, calcination, and pre-firing applications involving oxides, ceramics, battery cathode precursors, and metallurgical powders. While not vacuum-rated or gas-tight, the furnace permits inert or mildly reducing atmospheres (e.g., N₂, Ar) when fitted with optional gas inlet/outlet ports. It is explicitly unsuitable for flammable, explosive, or highly corrosive gases (e.g., H₂S, Cl₂, Na vapor) without prior consultation and custom refractory modification. Users conducting GLP/GMP-regulated thermal treatments should implement external data logging with audit-trail-capable software to satisfy 21 CFR Part 11 traceability requirements.
Software & Data Management
The built-in 518P intelligent temperature controller supports RS485 communication (Modbus RTU protocol), enabling integration with third-party SCADA systems or laboratory information management systems (LIMS). Optional KJ GROUP FurnaceControl™ software provides real-time temperature monitoring, profile upload/download, historical trend analysis, and CSV export of time-stamped temperature logs. All thermal cycles are timestamped and stored locally with cycle ID tagging — supporting ISO/IEC 17025-compliant record retention when paired with validated backup procedures.
Applications
- Sintering of advanced ceramics (Al₂O₃, ZrO₂, SiC) and functional oxides.
- Thermal treatment of lithium-ion battery cathode materials (e.g., LiCoO₂, NMC, LFP).
- Ash content determination per ASTM D3174 and ISO 1171 standards.
- Pre-oxidation of metal foams and porous substrates.
- Heat treatment of dental and orthopedic biomaterials (e.g., hydroxyapatite coatings).
- Calibration reference source for thermocouple verification labs operating below 1300 °C.
FAQ
What is the recommended maximum heating/cooling rate for optimal furnace longevity?
The manufacturer specifies 10 °C/min as the upper limit for both heating and cooling rates to minimize thermal stress on SiC rods and insulation layers.
Can this furnace operate under vacuum or controlled atmosphere conditions?
No — the KSL-1400X-A2 lacks vacuum sealing and is not rated for pressurized or sealed-gas environments. Optional gas inlet kits support open-flow inert atmospheres only.
Is the internal alumina coating repairable if damaged?
Yes — minor cracking or spalling of the reflective alumina layer is normal after extended use and can be restored using KJ GROUP’s certified alumina slurry (Part No. KJ-ALC-REFL), applied per technical bulletin TB-KSL-07.
Does the furnace comply with FDA or ISO 13485 requirements?
The unit itself is CE-marked and constructed to industrial safety standards; however, regulatory compliance for medical device manufacturing depends on system-level validation, including installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ) executed by the end user.
What maintenance intervals are recommended for SiC heating elements?
Under continuous operation at ≤1300 °C, SiC rods typically retain functional integrity for 1,500–2,000 hours; visual inspection and resistance measurement every 500 hours are advised. Two spare rods are included as standard.
