1 theme content and suitable scope
The test specimen requirement of the fireproof order and degree that this standard provided a safe, fireproof experiment, test facilities, experiment
Of program of eye, test, fireproof limit decide criterion and test report.
This standard applies to the safe of general use.
2 cite standard
The clause that following standard place contains, through citing in this standard compose makes the clause of this standard. When this standard is published, what show version to all be effective. All standards can be edited, use this level each just should be discussed use following level the possibility of newest version.
3 fireproof grade
The definite opinion of fireproof grade compasses of the safe is expressed 1.
Express 1
4 test specimen ask
4.1 sampling
4.1.1 choose in every kinds of product have it is test specimen representatively. Thick to structure, material and wall homogeneous phase is the same as, it is the product with different measurement only, choose among them size is the largest for test specimen.
When the 4.1.2 fireproof order and degree that have 3hc, 2hc or 1hc experiment, test specimen amount is two; When the fireproof order and degree that has 3h, 2h or 1h experiments, test specimen amount is.
4.2 preparation
Before 4.2.1 experiments, want to be propped up in setting of test specimen bottom, change direction in order to prevent annulus melt in fireproof experiment process and make test specimen dump.
The 4.2.2 newspaper that are 148mm×210mm with dimension loosen to knead the spitball that is 6 ～ 7cm into the diameter loosely, be in each inside test specimen next (include a drawer to wait) even ground places 5 spitball.
5 test facilities
5.1 experiments furnace
5.1.1 experiments furnace should accord with GB9978-88 in 3.1 warm up condition and the regulation of 3.2 pressure conditions, make test specimen divides bottom beyond other each all can get internal heat equably, and blaze cannot pound test specimen directly.
5.1.2 experiments furnace should be in 10min make furnace temperature achieves 900 ℃ .
5.2 furnace temperature are measured
The temperature inside furnace measures the regulation that should accord with the temperature inside the 2.3.1 furnace in GB9978-88 to measure. Thermocouple is decorated in the 4 flank semmetry of test specimen, amount not less than 4, its heat up end to be apart from test specimen 4 flank 50mm.
Temperature of interior of 5.3 test specimen is measured
The measurement of temperature of test specimen interior uses filar diameter to undertake for the thermocouple of 0.5mm, thermocouple is inserted from starting a hole of test specimen bottom, insert aperture to be sealed with fireproof material.
Takeup of 5.4 test specimen
The setting has heavy facility, in the experiment below strong down, promote this standard the height of the requirement test specimen.
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