Connection mode of fire door and wall
Self-tapping screws for wooden doors;
Steel doors use expansion bolts, nail guns or welding methods.
Installation technology of fire door:
When installing door frames and doors, they should be installed in the opening direction of the doors, and the fire doors must be opened in the evacuation direction, which can be said to be the most important point in installation. The distance between the door frame and the surrounding walls should not be too large, and it should be plugged with cement mortar or rock wool when necessary; When installing fire doors, pay attention to whether there is good air tightness; Many installation teams cut corners during installation, which is resolutely put an end to. It is best for users to personally check when installing. Don't make the door frame yourself, buy a regular fire-proof door leaf for installation.
In fact, in the whole life of the fire door, the use specification is the most important, which not only affects the normal function of the fire door, but also affects its service life.
Fire doors are divided into wood and steel, and the finished products must meet the fire performance required by the design. All metal components shall be arc welded, and the weld shall be free of defects such as unfused and incomplete blowholes, cracks and burn-through. The steel skeleton should conform to the specifications after straightening, and the finished product should have the factory certificate, and check with the drawings to see if it meets the design requirements.
The installation of fire doors should be flush with the wall surface in the opening direction of door leaves.
The installation of wooden fire-proof door frames and fans is the same as that of wooden door frames and fans.
The fire door should be about 20mm smaller than the installation of size of the hole. The door frame should be firmly connected with the wall, and the gap should be filled with heat-resistant materials. Installation should be straight to avoid sawing. If there is inevitable sawing, the surface of sawing plane must be coated with fire retardant paint once. After the hardware parts are chiseled, a fire retardant paint should be applied at the chiseled place. Fire doors and walls should be connected by expansion bolts. If wooden bricks are used, they must be treated with flame retardant, and door closers must be installed on fire doors.
When the fireproof door leaf of reinforced concrete door frame is loaded into the door frame, the gap between the door and the door frame should be adjusted first to make the door leaf straight. The upper and lower door shafts must be on the same vertical line. When welding with the embedded iron parts of the door frame, the position should be corrected to prevent displacement and deformation. Upper and lower bolts, pins and handles shall be installed accurately and welded firmly after trial installation. After installation, switch tests should be carried out several times. After passing the inspection, the door frame should be painted and the hardware should be painted with fireproof paint.