Tel : +86-592-3926659
Email : gilia@inthelaboratory.com
Lab 1200C Box Furnace with Vacuum and Atmosphere Capability
Introduction
As shown in the diagram, the GWL-ZQLB series vacuum atmosphere box furnace integrates temperature control system, vacuum chamber, vacuum pump, gas circuit, pressure protection, gas flow control, positive/negative pressure display, and water circulation pump. The water circulation tank and furnace body are integrated. The furnace lining is made of vacuum-formed high-purity alumina lightweight material.
It uses electric heating elements as heat sources. It is a special device designed for laboratories in universities, research institutes, and industrial enterprises for sintering, melting, analysis, and production of ceramics, metallurgy, electronics, glass, chemicals, machinery, refractory materials, new materials, special materials, building materials, metals, nonmetals, and other compounds.
The control panel is equipped with an intelligent temperature controller, power switch, main heating start/stop button, voltmeter, ammeter, computer interface, water pump switch, vacuum pump switch, gas flow meter, positive/negative pressure gauge, electric contact pressure gauge, and valves for real-time monitoring. The furnace adopts reliable integrated circuits with good anti-interference performance. The furnace shell temperature during operation is ≤40°C, greatly improving the working environment. It features microcomputer program control, programmable temperature curves, automatic heating/cooling, and editable parameters during operation, making it flexible and easy to operate.
Temperature control accuracy: ±1°C (no overshoot); constant temperature accuracy: ±5°C. Fast heating rate, maximum ≤45°C/min.
The furnace chamber uses vacuum-formed alumina lightweight material, featuring high working temperature, low heat storage, thermal shock resistance, no cracking, no slagging, and excellent thermal insulation. With a rational double-layer air-cooled structure, the test cycle is greatly shortened.
Technical Specifications
|
Item |
900℃ |
|
Maximum working temperature |
1200℃ |
|
Normal working temperature |
900℃ (adjustable) |
|
AC Voltage |
3-phase 380V, 50-60Hz |
|
Heating element |
Silicon carbide rod |
|
Heating element position |
Both sides of chamber |
|
Thermocouple & measuring range |
Ni-Cr/Ni-Si K type, 0-1350℃ |
|
Programmable segments |
1 group: 50 segments; 2 groups: 22 segments each; 3 groups: 8 segments each (adjustable) |
|
Heating rate |
1℃/h to 20℃/min (adjustable) |
|
Furnace door height |
1000 mm from ground |
|
Vacuum range |
100 Pa to 10⁻¹ Pa |
|
Micro positive pressure |
Within 10 kPa; vacuum pumping ≤ 30 min; PID adjustable; electronic pressure gauge |
|
Heating zones |
3-zone design |
|
Furnace body |
CNC machined, polished, pickled, phosphated, plastic sprayed, high-temperature baked; two-tone, oxidation-resistant, acid/alkali-resistant, corrosion-resistant, high-temp resistant, easy to clean |
|
Structure |
Double-layer air-cooled furnace body |
|
Door opening |
180° side opening |
|
Water cooling |
Furnace mouth, door, roof; 1-inch water pipe connector |
|
Vacuum pump |
Two-stage direct rotary vane pump, 60 m³/h; 3-inch furnace port |
|
Vacuum display |
Analog pressure gauge (-0.1 MPa) + digital positive/negative pressure gauge |
|
Pressure resistance |
6-20 mm steel plate, double-sided welded; positive pressure resistant to 0.1 MPa |
|
Gas valves |
Stainless steel |
|
Pressure detection |
1 analog positive/negative pressure gauge (digital vacuum gauge optional) |
|
Gas flow meters |
2 float flow meters |
|
Pressure protection |
Electric contact pressure gauge / sensor triggers control module: closes intake valve, opens exhaust valve, activates audible-visual alarm to release overpressure |
|
Gas leakage alarm |
Detects toxic/hazardous gases; triggers shutdown, closes gas supply, opens ventilation (optional) |
|
Applicable atmospheres |
H₂, N₂, Ar, CO, O₂, etc. |
|
Refractory material |
Vacuum-formed alumina fiber lightweight board; furnace bottom: lightweight hollow sphere alumina board |
|
Insulation |
4 layers: alumina fiber blanket, fiber board, polycrystalline fiber board, vacuum-formed lightweight board |
|
Furnace shell temperature |
≤45°C (continuous long-term operation) |
|
Protection system |
Integrated module, dual-circuit control & protection: overshoot, over-temp, over/under voltage, over current, phase loss, broken thermocouple, current feedback, soft start |
|
Control mode |
Closed-loop SCR phase-shift trigger; constant voltage/current/power; current inner loop + voltage outer loop |
|
Display parameters |
Temperature, segment No., time, remaining time, power %, voltage, current |
|
Temperature curve control |
Intelligent controller with PID/APID/MPT, auto-tuning, self-learning, 30-segment (50-segment optional) programming, smooth curve fitting |
|
Multi-curve program |
30/50 segments total; assignable to 1/2/3/5 curves; storable and callable |
|
Communication |
RS485 (up to 1700 m); PC control: start/pause/stop, curve setting, data recording, history curve/report (1 s-1 h interval, long-term storage) |
|
Standard accessories |
1 crucible tongs, 1 pair high-temperature gloves |
|
Warranty |
1-year free warranty; heating elements not covered (free replacement if naturally damaged within 3 months) |
|
Notes |
1. Recommended heating/cooling rate: 10-20℃/min (too fast shortens element life)2. Small chamber cracks are normal; repairable with alumina coating3. Avoid high-temperature liquid spillage on bottom; use backing plate or alumina powder4. Install in well-ventilated, dry area |
|
Packing list |
1 furnace, 1 door insulation plug (for ≥1700℃ furnaces), 1 crucible tongs, 1 pair high-temp gloves, manual, certificate, delivery note |
IPv6 network supported 