Scope of Application

【Operating Instructions】

Developed according to the technical specifications and requirements of the national standard GB/T 5464-2010, this test furnace is suitable for test methods evaluating the combustion performance of building materials under laboratory conditions. It is applicable for testing the combustion performance classification of Class A fire-resistant materials within the GB 8624 building material combustion performance grading system.

YS-JCB-2 Building Material Non-Combustibility Test Furnace

Scope of Application

Developed according to the technical specifications and requirements of the national standard GB/T 5464-2010, this test furnace is suitable for test methods evaluating the combustion performance of building materials under laboratory conditions. It is applicable for testing the combustion performance classification of Class A fire-resistant materials within the GB 8624 building material combustion performance grading system.

Compliance Standards

• GB/T 5464-2010

• GB/T 8624

• ISO 1182 "Reaction to fire tests for building products — Non-combustibility test"

Instrument Features

1. Advanced Control: Utilizes microcomputer and Silicon Controlled Rectifier (SCR) technology to regulate furnace power and temperature.

2. Dual Control Modes: Operations can be controlled via the touch screen or a computer, with easy switching between modes. One device can support multiple computer terminals simultaneously, allowing for LAN sharing. (Note: Computer and printer are supplied by the user; host software, router, and network cables are included with the equipment.)

3. High Automation: During the test, the system displays and records temperatures for the furnace, specimen center, and specimen surface. It automatically provides step-by-step operation prompts.

4. Data Analysis: Capable of querying historical curves and automatically judging temperature equilibrium.

5. Safety & Ease of Use: The testing process is safe, reliable, and user-friendly.

6. Furnace Design: Features a custom-molded refractory furnace chamber with excellent thermal insulation.

7. High Performance: Uses high-quality strip heaters, capable of reaching temperatures up to 900℃.

8. Software Integration: PLC + LabVIEW professional software displays real-time curves for furnace, specimen center, and specimen surface temperatures. It enables automatic control, data acquisition/processing, and result saving/output.

9. Observation: Equipped with a top-mounted viewport for safe observation of the specimen's combustion status inside the furnace.

Technical Specifications

1. Furnace Dimensions: Φ40cm, Height 1.5m.

2. Heating Element: 80/20 Nickel-Chromium resistance strip (Thickness 0.2mm, Width 3mm).

3. Specimen Size: Φ45 × 50 mm.

4. Heating Tube: Inner diameter 75mm ± 1mm, Outer diameter Φ90mm ± 1mm, Height 150mm ± 1mm; Power approx. 2KW.

5. Thermocouple: Nickel-Chromium/Nickel-Silicon armored thermocouple (Outer diameter 1.5mm, Wire diameter 0.3mm); Heater power: 2KW.

6. Stabilization Time: Approx. 1 hour from room temperature to 750℃ to reach stability for testing.

7. Sensor Configuration: Equipped with furnace thermocouple, specimen center thermocouple, and specimen surface thermocouple.

8. Scanning Device: 360° rotatable and升降 (lifting/lowering) thermocouple scanning device.

9. Airflow System: Stainless steel inverted cone air stabilizer and cylindrical flow guide hood.

10. Temperature Control: Software automatically controls heating rate and manages furnace temperature in stages.

11. Operating Environment: -5℃ to 40℃.

12. Power Supply: AC 220V ±10%, 50Hz, Current ≤ 10A.

13. Stabilization: Time from room temperature to 750℃ is ≤ 1 hour.

14. Heating Source: Electric furnace preheated to 750 ± 5℃; Max furnace temperature 900℃; Furnace temperature 750 ± 5℃; Temperature drift ≤ 2℃ within 10 minutes.

15. Temperature Accuracy: ≤ ±0.5℃.

16. Heating Power: 800-1000W.

17. Max Power: 1.5KW.

18. Heating Voltage: 0 ~ 100V adjustable.

19. Software Logic: Includes current regression judgment for temperature equilibrium conditions.