Product introduction:

This test method is to ignite the sample in the combustion chamber, and the ignition source is the gas radiant plate and the medium-sized gas burner.
The radiation intensity of the radiant plate is 32.5kw/m2 (surface) at the distance of 75mm, and the flame height of the blowtorch is 75-100mm, which is applied to the sample in the same direction as the radiant plate. The sample was exposed to the radiant heat source plate for 10min. Record the flame propagation of the sample for 1.5 minutes and 10 minutes. The test results are divided into four grades. Grade 4 materials have high fire risk and are not allowed to be used as building materials.

Standard:

BS476-7: 

Technical parameters:

1. Test furnace: 850mm x 850mm x 850mm, with steel plate outside and refractory brick lining;
2. Voltage: 220 V 50 Hz;
3. Weight: 400kg;
4. Combustion gas: propane or natural gas (provided by the customer);
5. Equipped with hair dryer;
6. The burner tube is made of stainless steel, with an inner diameter of 3.0 mm and an outer diameter of 6.4 mm;
7. Flame height of blowtorch: 75-100mm;
8. The radiation plate is installed on the frame, and the radiation intensity is 32.5kw/m2 (surface);
9. Cooling water flow is 12L/min;
10. The gas flow is 1500 ± 200 ml/min;
11.Ambient Temperature:10°C ~ 35°C；
12. Electronic ignition, automatic flameout and safety monitoring device;
13. Stainless steel exhaust pipe, with removable parts and easy to clean thermocouples;
14. Equipped with touch screen and LabVIEW control system;
15. The computer automatically processes the data and prints the test report.