Flexibility, reliability and fire resistance of fire door test method

flexibility

Opening and closing flexibility
When the fire door is in use, the specimen is installed on the test frame, and its opening and closing flexibility is measured by hand and eye.

Door opening force F
According to the use state, the specimen was installed on the test frame, the door was in the closed state, the dynamometer acted on the door handle, and was perpendicular to the door, the door was pulled apart, and the door opening force F was measured and recorded.

reliability

Test frame
It is an adjustable frame to be suitable for the installation of fire doors of different specifications and sizes, and the frame should have sufficient stiffness to avoid deformation affecting the test results during the test.

Test piece
Including the door frame, door and actual use should be equipped with fireproof hardware Accessories such as fire lock, door closers and sequencers composed of fire doors.

Test procedure
1. Fix the specimen on the test frame.

2. When the door is opened and closed, the operation period is 8s to 14s, and the opening Angle of the door is 70°. Record the operation times. During the test, it should be recorded whether the various accessories of the fire door are loose, falling off, seriously deformed, and blocked.

Fire resistance

Test procedure
According to the use state, the specimen is installed on the test frame, and the specimen is checked before the fire resistance test. The door blade should be opened flexibly. The door door is closed by the door closing device such as the door closing device, so that the inclined tongue of the fire lock meets, and the door door should not be locked by a key; The door for special use (such as the pipe well door) can be locked with a key, and the key should not be left in the lock hole.

Note: The specimens should be tested for compatibility tolerance, flexibility and fire resistance in the same frame and in the same state.

Fire resistance criteria
1. Fire integrity
The time during which the specimen can maintain fire resistance and heat insulation during fire resistance test. A specimen is considered to have lost its integrity when any of the following conditions occur:

a) the cotton pad is ignited;

b) The gap probe can pass through;

c) The flame appears on the back fire surface and lasts for more than 10s.

2. Fire insulation
2.1 General Provisions
For specimens containing different thermal insulation zones, each zone should be judged separately according to the loss of fire insulation criteria. The loss of fire insulation in any area means that the specimen loses fire insulation.

2.2 Average temperature rise
When the average temperature rise of the backfire surface of the specimen exceeds 140℃, it is determined that the specimen loses the fire insulation property. The average temperature should be obtained from the temperature recorded by the electric couple.

2.3 Maximum temperature rise
If the maximum temperature rise of the back fire surface of the specimen (except the door frame or the guide rail) exceeds the initial average temperature of the specimen surface by 180℃, it is determined that the specimen loses the fire insulation property. The maximum temperature should be obtained from the temperature recorded by the thermocouple.

If the highest temperature rise on the door and shutter (heat insulation) frame or guide rail exceeds the initial average surface temperature of 360 ° C, the test specimen is judged to lose fire insulation. The maximum temperature should be obtained from the temperature recorded by the electric couple.