Steel thermal insulation fireproof door

Abstract

The invention relates to a steel thermal insulation fireproof door. The steel thermal insulation fireproof door comprises fireproof plates, a door leaf frame and keels, and is characterized in that the door leaf frame is welded to the keels arranged longitudinally and transversely into a whole, the section of each keel is shaped like a hollow rectangle or a hollow square without a right side, the two sides of each keel are respectively provided with one fireproof plate (10), the fireproof plates (10) are attached to the planes of the keels and are fixed to the keels through sunk screws (9), and fireproof decorative plates or steel plates are attached to the outsides of the fireproof plates (10). The steel thermal insulation fireproof door resolves the problems that in the development and production process in the prior art, complex habitual thoughts and technical prejudice are generated, and simple and effective techniques and processes are ignored. The steel thermal insulation fireproof door meets the requirements for high-temperature small deformation, thermal insulation and fire resistance through the reasonable structural layout and a simple and feasible process, is suitable for batch production, reduces waste and ungraded products, guarantees the consistency of products, and is high in production efficiency, low in cost and obvious in economic benefit.

Description

technical field [0001] The invention relates to a steel heat-insulating fire door, which belongs to the technical field of fire doors. Background technique [0002] Fire doors are used to partition fire zones and buildings that require fire protection. When a fire occurs, they can be closed reliably to prevent the spread and expansion of smoke and flames. Therefore, the strength and heat insulation capacity of fire-proof doors must meet the requirements of the national fire-proof door standards. Require. The fire resistance time of Class A fire doors must reach 1.5 hours. The temperature of the fire-receiving surface of the fire-proof door in the combustion test furnace is 1000°C, and the temperature of the back-fired surface of the rear door leaf does not exceed 180°C after 1.5 hours. It is required not to be deformed, and there is no phenomenon of fire or smoke. [0003] The structure of the steel fireproof door in the prior art includes a keel, a fireproof board, and a...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing steel heat-insulating fire doors have poor fire prevention effect and are prone to fire and smoke. The thickness of the fireproof board, but the effect of improvement is still not good, and it also leads to a substantial increase in the cost of materials

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