The Building Material Non-Combustibility Test Furnace is developed in accordance with the technical specifications and requirements stipulated in the national standard GB/T5464-2010. It is suitable for the test method to evaluate the combustion performance of building materials under laboratory conditions. It is applicable for testing the combustion performance classification of Class A fireproof materials in the GB8624 combustion performance grading of building materials.

Functional Features of the Building Material Non-Combustibility Test Furnace:                                     

1. Utilizes microcomputer technology and thyristor technology to regulate furnace temperature through power control;

2. Dual control modes: operation can be controlled on the touch screen or on a computer, with easy switching between control methods; one device can be operated by several computers simultaneously, allowing multiple computers to be online at the same time, enabling wireless network sharing (users provide their own computers and printers);

3. High degree of automation: displays and records the temperature inside the furnace, at the center of the specimen, and on the surface of the specimen during testing, with automatic prompts for operational steps;

4. Capable of querying historical curves and automatically determining temperature equilibrium;

5. Safe, reliable testing process with convenient operation;

6. Custom-made mold-formed refractory furnace chamber with excellent thermal insulation performance; 

7. Uses high-quality strip heaters, allowing furnace temperature to rise to 900°C;

8. Employs CH341 system-driven professional software to display real-time curves of furnace temperature, specimen center temperature, and specimen surface temperature, enabling automatic control, data acquisition and processing, data storage, and output of test results;

9. Equipped with an observation mirror on top for safe viewing of the combustion state of specimens inside the furnace.

Related Technical Parameters of the LDBR-2 Building Material Non-Combustibility Test Furnace                                         

1. Furnace dimensions: Φ40cm, height 1.5m. 

2. 80/20 nickel-chromium resistance strip specifications: thickness 0.2mm, width 3mm. 

3. Specimen dimensions: Φ45×50 (mm). 

4. Heating furnace tube inner diameter 75mm±1mm, outer diameter Φ90mm±1mm, height 150mm±1mm, power approximately 2KW. 

5. Thermocouple: nickel-chromium/nickel-silicon armored thermocouple, outer diameter 1.5mm, wire diameter 0.3mm, heating wire power: 2KW. 

6. Furnace temperature stabilization time: from room temperature to 750°C, ready for testing in about 1 hour. 

7. Equipped with furnace thermocouple, specimen center thermocouple, and specimen surface thermocouple; 

8. 360-degree rotatable and liftable thermocouple scanning device; 

9. Stainless steel inverted cone air stabilizer and cylindrical flow guide cover; 

10. Software automatically controls heating rate and regulates furnace temperature in stages; 

11. Operating environment: -5°C to 40°C. 

12. Power supply voltage: AC220V±10%, 50Hz, current ≤10A; 

13. Stabilization time: from room temperature to 750°C ≤1 hour; 

14. Heating source is an electric furnace preheated to 750±5°C, furnace temperature up to 900°C, internal furnace temperature 750±5°C, temperature drift not exceeding 2°C within 10 minutes; 

15. Temperature measurement accuracy: ≤±0.5°C. 

16. Heating power: 800-1000W; 

17. Power: 1.5KW; 

18. Power heating voltage: adjustable from 0~100V; 

19. The software includes current regression to determine temperature equilibrium conditions.  

Applicable Standards                                             

GB/T5464-2010  GB/T8624   ISO1182 Reaction to fire tests for building products — Non-combustibility test