Novel steel heat-insulation and fire-proof auxiliary and main door and manufacturing method thereof

Abstract

The invention belongs to the technical field of door and window manufacturing, and particularly relates to a novel steel heat-insulation and fire-proof auxiliary and main door and a manufacturing method thereof. The novel steel heat-insulation and fire-proof auxiliary and main door comprises a door frame and door leaves, wherein the door leaves comprise a main door and an auxiliary door; the main door and the auxiliary door are respectively hinged to the left side and right side of the door frame; the surfaces of the main door, the auxiliary door and the door frame are respectively made of cold-rolled galvanized steel plates, and the interiors of the main door and the auxiliary door are filled by expanded perlite fireproof plates; a magnesium and silicon fireproof plate is arranged on the fire receiving surface of the inner wall of the door frame, and magnesium and silicon fireproof plates are respectively arranged on the adhering side surfaces between the main door as well as auxiliary door and the door frame, the adhering side surface between the main door and the auxiliary door, and the fire receiving surfaces of the main door and the auxiliary door. The novel steel heat-insulation and fire-proof auxiliary and main door has the advantage that by arranging the magnesium and silicon fireproof plates on the gap between the main door as well as auxiliary door and the door frame and the gap between the auxiliary door and the main door, the fireproof property of the door gap is greatly improved, and the outward propagation of fire to the door joint is prevented.

Description

technical field [0001] The invention belongs to the technical field of door and window manufacture, and in particular relates to a novel steel heat-insulating and fireproof composite door and a manufacturing method thereof. Background technique [0002] Existing metal fire doors are generally assembled by hinges, locksets and door hardware with door frames and door leaves. The door frame of the fire door is directly processed by the metal plate through shearing, stamping, bending, welding and other processes. The door leaf is processed by filling the inside of the formed door leaf panel with fireproof filler. In order to make the door leaf have a certain strength, the inside of the door leaf needs to be supported by a steel skeleton, so as to realize the integrity of the fire door and meet the needs of the fire resistance limit of the steel fire door. However, the fireproof layer in the prior art is often arranged on the door leaf surface (i.e. the fire-receiving side of t...

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Problems solved by technology

However, the fireproof layer in the prior art is often arranged on the door leaf surface (i.e. the fire-receiving side of the door leaf), but when a fire breaks out, the fire will generally spread outward from the gap between the door leaf and the door frame. Partial fire performance, no matter how good the fire performance of the door leaf is, it is difficult to stop the fire

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