A. There are two types of fixing methods for installation of roll forming machine: transmissive and concealed concealed. Penetration is the most common way to install roof and wall roll forming machine, that is, the self-tapping screws or rivets are used to fix the color plates on the support members (such as the purlins), and the penetrating fixation is divided into wave-pin fixation, trough fixation or Their combination. Concealed concealed fixing is a method of fixing the special concealed buckle with the dark button type color plate to the support member (such as the purlin), and the fixing method of the female rib of the color plate and the central rib of the concealed button is generally used for the house. Panel installation.
B. Selection of self-tapping screws. When fixing screws are selected, the fixing parts should be selected according to the service life of the structure, and special attention should be paid to whether the life of the outer covering material is consistent with the life of the specified fixing parts. At the same time, note that the thickness of the steel string cannot exceed the self-drilling capacity of the screw. Screws are currently available with a plastic head, stainless steel top cover or a special durable finish. In addition, except for the screws for fixing the buckles, the other screws are provided with waterproof gaskets, and corresponding special gaskets are provided for the lighting panels and under special wind pressure conditions.
C. The side and end of the color plate are overlapped. When installing each steel plate, it should be placed on the front steel plate accurately and clamped to the previous steel plate until both ends of the steel plate are fixed. A simple and effective method is to use a pair of jaw clamps to clamp the overlapped steel plates. When the steel plate is placed in the longitudinal direction, the end portion, especially the upper end portion, needs to be clamped with the gusset portion, so that one end of the steel plate can be seated, and the overlap at one end is also in the correct position, thereby fixing the steel plate. During the fixing process, the clamp should always clamp the steel plate in the longitudinal direction. Before installing the next steel plate, each steel plate must be completely fixed. The fixing must start at the center of the steel plate and then extend to both sides, and finally the lap joint of the steel plate is fixed. For end lap joints, since the roof and wall profile panels are made by continuous processing, the steel plates can be supplied at a length limited by the transport conditions, usually without overlapping, and the length of the steel plates is sufficient to meet the needs of roofing. .
D, the installation of color plates is easier to master, and the handling of some details is more important. For the roof color board, the color board should be correspondingly closed at the roof and the eaves, in order to prevent rainwater from entering the roof more effectively.
Where the roofing panel is on the ridge, the edge between the ribs of the steel plate can be folded upwards with a hemming tool. It is used on all upper ends of all grades below 1/2 (250) roof steel to ensure that water blown by the wind below the flooding or deck does not flow into the building.
E. In the design of large-span and large-area workshops, in order to have sufficient brightness, lighting belts are often designed, usually arranged in the middle of each span. Although the setting of the lighting plate increases the degree of daylighting, it also increases the heat transfer of the sun and increases the temperature inside the building.
Finally, note that in general roofing and flooding installations, self-tapping screws, drills, hand saws, or other operations can leave metal debris on the roof or adjacent areas, such debris and other Miscellaneous items (rivets, nails, screws, etc.) must be removed from the roof, floodplains, gutters, etc. as soon as possible. This work should be done as a daily end. This is especially needed after the entire roof has been installed. If this work is neglected, it will oxidize the metal debris and cause stains on the surface of the steel sheet.
F. In the south, the color plate is generally designed as a single-layer color plate. In order to reduce the solar radiation heat into the interior of the building, when installing the roof panel, the insulation layer can be installed in the roof system. There is a very simple, economical and effective way to apply a double-sided reflective foil film to the stringers or slats before installing the roofing steel. This method can also be used as a steam barrier to reduce agglomeration. If the film is allowed to sag between the supports by 50 to 75 mm, the air layer between the film and the roof panel will further enhance the heat insulation effect.
