With the extensive use of fire doors in large public places, the number of fire doors in the market has increased, and wooden fire doors have been introduced. What is the specification of wooden fire doors ? Today we will take a look at the specification of wooden fire doors .
Rules for fire prevention of wooden fire doors 1 , Fire Protection Codes for Design of Buildings, etc. stipulate that firewalls must use non-combustible or non-combustible materials; Fire Protection Code for Interior Design of Buildings stipulates that in addition to ordinary houses, wall decoration of all buildings must use non-combustible. Or flame retardant material. As a part of the fire wall, the wooden fire door is fire-resistant except for the fire-resistant limit. The "General Technical Conditions for Wood Fire Doors" does not require any door facing material.
The allowable deviations of the warpage of the door frame and the door leaf in the wood fire door code 2 and the allowable deviation of the wood fire door are 3 mm and 2 mm, respectively, and the allowable deviation of the frame and fan contact surface flatness in the allowable deviation of the installation of the wooden fire door is 2mm. If the warpage deviations of the door frame and the door leaf are 2.5 mm and 0.2 mm respectively, the deviation of the flatness of the contact surface between the frame and the fan after installation is more than 2 mm, which does not meet the requirements of the standard.
Wooden Fire Door Specification 3. It can be seen from the “Wooden Fire Door Production Permissible Deviation†that the production of the Class I wooden fire door height and width allows the deviation of the door frame to be 0/-1 and the door leaf to be +1/0. Assuming that the nominal size of the door leaf is X, the actual size of the I-level product door leaf may be X to X+1 mm, and the actual size of the door frame inner mouth may be X-1 to X mm. If you do not re-machine the door or door frame during installation, the fit is too hard to close the door.
According to "The width of joints installed on wooden fire doors", the width of joints for installation of wooden fire doors, the gap between door leaves, the vertical gap between the fan and the frame is 1.5 to 2.5 mm, and the gap between the frame and the fan is 1.0 to 1.55 mm. It is necessary to ensure that the unilateral vertical seam between the fan and the frame is 1.5-2.5mm, and the recutting amount of the door leaf during installation is 3.0-7.0mm.
Wood Fire Door Specification 4. The heat insulation material used inside the wooden fire door leaf is usually a density of 90-180kg/m3 of aluminum silicate fiber or rock wool fiber products, and the rigidity and strength are poor. It needs to be fixed with a high temperature adhesive and barbed wire. Brushing high-temperature glue and fixing barbed wire has a great influence on the production efficiency. Some companies have omitted this process in actual production.
The specification of wooden fire doors 5 and the protection of gaps have an important influence on the fire resistance of fire doors. According to Japan's requirements, high-temperature glue must be applied between the frame material of wood fire door leaf, between the frame material and the filling material, and an intumescent fire-proof sealing strip must be used between the frame material and the packing strip and between the door leaf and the door frame. In the case of product type certification, domestic enterprises usually apply high-temperature glue between the material of the door frame, between the material of the frame and the filling material, between the material of the frame and the bag, apply fire-retardant paint between the door leaf and the door frame, or use intumescent fire protection. sealing strip.
However, due to the application of high-temperature adhesives or the use of intumescent fire-proof seals, it has a great impact on production efficiency and raises the production cost. Therefore, in actual production, some companies have omitted this process.
Wood Fire Door Specification 6 , fire door filling materials generally use aluminum silicate fiber or rock wool. The working temperature of aluminum silicate fiber is above 900°C, and the working temperature of rock wool is lower than 700°C. The fire resistance of aluminum silicate fiber is obviously better than rock wool, but the price is higher. Some companies use aluminum silicate fibers as filling material for the door leaf during type certification testing, but rock wool is used as filling material in production.
With regard to the specification of wooden fire doors , I will introduce them here. I hope to help you, and more information on the decoration will be provided on this site. Stay tuned.
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