SN/T 2498.4-2012Basic environmental testing for the import and export fireworks and firecracker articles. Damp heat, steady state (English PDF)

3.1 Equipment

3.1.1 Temperature/humidity chamber. The temperature can be maintained at 75 °C ± 2 °C, humidity can be maintained at 93% ± 2%.

3.1.2 Automatic temperature and humidity recording system. real-time measurement, recording and storage temperature/humidity test chamber temperature and humidity.

3.2 Sample Requirements

Sample to be tested should be Pyrotechnic products, the number of samples is 6 or 6 sales package.

3.3 Test Procedure

3.3.1 Initial Detection

Randomly selected three samples or three sales packaging, in accordance with the requirements of SN/T 0306.5-2012 Appendix A, respectively appearance and Regulation Grid size, component mounting, fuse and discharge performance testing, if not appear any missing SN/T 0306.2 and SN/T 0306.3 provisions Trap, then the remaining three or three sales package samples test conditions.

3.3.2 Environmental Testing

3.3.2.1 The test sample kept at room temperature for 2h.

3.3.2.2 The sample was placed in a temperature/humidity chamber, without humidification of the test chamber temperature to 75 °C.

3.3.2.3 until the test chamber temperature was raised to 75 °C and stable, the chamber is set to 93% relative humidity, the samples were humidified, to be tested the inside temperature and relative humidity reaches a predetermined value and stability, it began to calculate the duration of the test, test duration 48h.

3.3.3 Intermediate detection

During the test conditions should be observed whether the sample produced a fire or explosion, whether to produce colored smoke or gas; temperature and humidity automatically credited by