【 Weak current College 】 fire door sense---Power By 【 China power house network 】

Common sense fire door 1. fire resistance of fire door is more long? ", in accordance with GB-7633 doors and shutter of fire test methods for fire doors, fire resistance test for class a fire resistance of fireproof doors should not be less than 1.2h; class b fire door with fire-resistant limit should not be less than 0.9h; class c fire door with fire-resistant limit should not be less than 0.6h. 2. a, b, c on the fire door difference ? steel and wooden fire door a, b, c on the fire resistance of the door body padding differs from the type and scale of refractories. Class a fire door body filler Alumino-silicate cotton (commonly known as white cotton); class c fire door body padding rock wool (commonly known as yellow cotton); class b fire door body filled aluminium silicate cotton and wool the half. The appearance of the same door and internal frame structure are the same, so only from the outside is not able to distinguish between its fire resistance rating. 3. fireproof、wooden fireproof door is divided into the eight type? fire product quality certification in the fireproof、wooden fireproof door product type approval supplement the rules in article II on fireproof、wooden fireproof door each divided into the following eight types: eight types, (without opening direction, not with or without bottom Kham) from easy to difficult sorting:
1. steel, wooden single-leaf fireproof doors
2. steel and wooden double-leaf doors
3. steel and wooden single-leaf doors with glass fireproof
4. steel and wooden double doors with glass fireproof door
5. steel and wooden single-leaf fireproof doors form with light
6. steel and wooden double-leaf doors with bright window
7. steel and wooden single-leaf band with glass fireproof door-window
8. steel and wooden double doors with glass Windows with bright fire door 4. China fire safety products quality certification Committee on fire doors there are 8 kinds of classification types and three flame resistant grades, why type approval certificate and test report is only available in steel, wood fire door all three certificate? Follow China fire product quality certification Committee the fireproof、wooden fireproof door product type approval supplement the rules set out in annex 3 to the fireproof、wooden fireproof door product type approval and inspection according to the description, the inspection items, sampling methods and criteria "in the provisions of the sampling mode: fireproof、wooden fireproof door by enterprises to apply for each flame resistant grade (grade a, b, c) in the most difficult of the specifications for the random drawing (sorted according to the degree of difficulty fireproof、wooden fireproof door product type approval supplementary rules of article 2 of the regulations). steel and wooden fire door applications for various fire rating sampling are the most difficult of the two-door with glass fireproof door with lit Windows, steel, wood fire door with fire-resistance rating by three certificates, as are the most difficult type so the other seven types of doors can be produced. Report: fireproof、wooden fireproof door (no open direction, not with or without bottom Kham) from easy to difficult door Figure 8 type. 5. fireproof door frames, fan installation with precision?, fireproof door frame requires the doors installed concise fire doors of door frame size as designed and the relationship between the size of the hole are: left, right, top 10 mm clearance between the, lower to 20MM buried. Frames, door with dimensions: height clearance on joint total 10MM, under joint 8MM. 2MM Width clearance Sin door to 6MM, hinge side and lock side 3MM; 10 mm double door, left, right, sewing individual 3MM, Raphe 4MM. For example: 1200MM double door box working width, fan width as 1080MM 535 × 2 = 1070MM, cumulative gap 10 mm. See the attached map. 6. door frame installation requirements 1. location precision: lower to buried 20MM should ensure that the level of the door frame, on the box that error is less than 1/500MM; two vertical box should be horizontal, vertical and parallel sensitivity 1/1000MM, and should be in the same plane.
2. dimensional accuracy: box working width upper, middle and lower point size difference is not greater than 1 mm, diagonal error is less than 2MM. Installation of the door frame of error and install the doors in question. 7. door frame installation error on the door leaf installed in 1. be buried too deep, joints reduce, door leaf and the ground rubs; over 8MM, door leaf will fail to install. To the left, right, vertical buried box inconsistencies (transverse box not level!), box fan of upper and lower joints for diagonal joints, single side-hinged door frame Vertical joints of upper and lower fan is inconsistent or cannot close; double door two fan blowing, rub, serious will shut the door and lock tongue into the keyhole. Solution: reinstall the door frame as required to requirements.
2. transverse level of the box. Inevitably be buried deep inconsistencies, as described in the item description and solution proposals.
3. two-lap box not vertical, box mouth will form a parallelogram or upper and lower working width inconsistent. Generated box fan with clearance problems with 1 item. At the same time also produces is door leaf and frame laminate surface, the gap is not consistent. Solution: reinstall the door frame as required to requirements.
4. box work on large wide three-point size small or large on small, hinge side clearance between the top and bottom are inconsistent, door frame fan have rubs or cannot close, serious door leaf will not be installed. Middle size large or small, middle side be large or small, will have the same problem. Solution: reinstall the door frame as required to requirements.