Rust-resistant galvanized steel door

Abstract

The utility model discloses an anti-corrosion galvanized steel door which comprises a door body, the door body is provided with an outer door plate and an inner door plate, and a filling cavity is formed between the outer door plate and the inner door plate. Filler is arranged in the filling cavity, and the two side faces of the filler are bonded with the inner side faces of the outer door plate and the inner door plate correspondingly. Galvanized layers are arranged on the outer surfaces of the outer door plate and the inner door plate, passivation layers are arranged on the surfaces of the galvanized layers, primer layers are arranged on the surfaces of the passivation layers, and finish paint layers are arranged on the outer surfaces of the primer layers. According to the anti-corrosion galvanized steel door, the outer surface of the outer door plate and the outer surface of the inner door plate are both provided with the galvanized layers, the anti-corrosion performance of the door body is remarkably improved, meanwhile, the passivation layers, the primer layers and the finish paint layers are arranged on the outer sides of the galvanized layers, the attractiveness of the door body is improved, the anti-corrosion performance of the door body is further improved, and the service life of the door body is prolonged. The service life of the door body is prolonged, and the using requirements for a safety door and a courtyard door are met.

Description

Technical Field

[0001] The utility model relates to the technical field of steel doors, and particularly relates to an anti-rust galvanized steel door. Background Art

[0002] Due to its strong and durable characteristics, steel doors are widely used as security doors and courtyard doors in the construction field. Generally, a steel door consists of an outer door panel and an inner door panel, and a filling cavity is formed between the two panels for filling heat-insulating and sound-insulating materials. However, steel doors are prone to rust in humid environments, which not only affects their appearance but may also reduce their service life and safety. Although traditional steel doors provide a certain degree of anti-rust protection by spraying paint or coatings, this protective layer is prone to wear and fall off, with poor anti-rust performance and unable to provide long-term effective protection.

[0003] Based on the above situation, the utility model proposes an anti-rust galvanized steel door, which can effectively solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an anti-rust galvanized steel door. The anti-rust galvanized steel door provided by the utility model significantly improves the anti-rust performance of the door body by arranging galvanized layers on the outer surfaces of both the outer door panel and the inner door panel. At the same time, a passivation layer, a primer layer, and a topcoat layer are arranged on the outside of the galvanized layer, which not only improves the aesthetics of the door body but also further increases the anti-rust performance of the door body, extends the service life of the door body, and meets the usage requirements for security doors and courtyard doors.

[0005] The utility model is realized by the following technical solutions:

[0006] An anti-rust galvanized steel door includes a door body, the door body has an outer door panel and an inner door panel, and a filling cavity is provided between the outer door panel and the inner door panel; a filler is arranged in the filling cavity, and both side surfaces of the filler are adhesively bonded to the inner side surfaces of the outer door panel and the inner door panel respectively; galvanized layers are arranged on the outer surfaces of both the outer door panel and the inner door panel, a passivation layer is arranged on the surface of the galvanized layer, a primer layer is arranged on the surface of the passivation layer, and a topcoat layer is arranged on the outer surface of the primer layer.

[0007] According to the above technical solution, as a further preferred technical solution of the above technical solution, both the outer door panel and the inner door panel are made of cold-rolled steel, and keels are fixedly connected to the inner side surfaces of both the outer door panel and the inner door panel.

[0008] According to the above technical solution, as a further preferred technical solution of the above technical solution, the filler is polyurethane foam.

[0009] According to the above technical solution, as a further preferred technical solution of the above technical solution, the material of the primer layer is epoxy resin.

[0010] According to the above technical solution, as a further preferred technical solution of the above technical solution, the material of the topcoat layer is acrylic or polyurethane paint.

[0011] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0012] An anti-rust galvanized steel door provided by the present utility model significantly improves the anti-rust performance of the door body by arranging galvanized layers on the outer surfaces of both the outer door panel and the inner door panel. At the same time, a passivation layer, a primer layer, and a topcoat layer are arranged on the outer side of the galvanized layer, which not only improves the aesthetic degree of the door body but also further increases the anti-rust performance of the door body, increases the service life of the door body, and meets the use requirements for security doors and courtyard doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the preferred implementation solutions of the present utility model will be described below in conjunction with specific embodiments. However, it should be understood that the drawings are only for illustrative purposes and cannot be construed as a limitation to this patent; for better illustrating this embodiment, some components in the drawings will be omitted, enlarged, or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The positional relationships described in the drawings are only for illustrative purposes and cannot be construed as a limitation to this patent.

[0015] An anti-rust galvanized steel door includes a door body. The door body has an outer door panel 1 and an inner door panel 2, and there is a filling cavity between the outer door panel 1 and the inner door panel 2; a filler 3 is arranged in the filling cavity, and both side surfaces of the filler 3 are adhesively bonded to the inner side surfaces of the outer door panel 1 and the inner door panel 2 respectively; galvanized layers 4 are arranged on the outer surfaces of both the outer door panel 1 and the inner door panel 2, a passivation layer 5 is arranged on the surface of the galvanized layer 4, a primer layer 6 is arranged on the surface of the passivation layer 5, and a topcoat layer 7 is arranged on the outer surface of the primer layer 6.

[0016] The present utility model significantly improves the anti-rust performance of the door body 1 by arranging galvanized layers 4 on the outer surfaces of both the outer door panel 1 and the inner door panel 2. At the same time, a passivation layer 5, a primer layer 6, and a topcoat layer 7 are arranged on the outer side of the galvanized layer 4, which not only improves the aesthetic degree of the door body but also further increases the anti-rust performance of the door body, increases the service life of the door body, and meets the use requirements for security doors and courtyard doors.

[0017] Further, in another embodiment, both the outer door panel 1 and the inner door panel 2 are made of cold-rolled steel, and keels 8 are fixedly connected to the inner sides of the outer door panel 1 and the inner door panel 2.

[0018] By using cold-rolled steel as the material for the outer door panel 1 and the inner door panel 2 and fixedly connecting the keels 8 to the inner sides, the structural strength and stability of the door body are enhanced.

[0019] Further, in another embodiment, the filler 3 is polyurethane foam.

[0020] By using polyurethane foam as the filler 3, the door body has excellent heat insulation and sound insulation effects.

[0021] Further, in another embodiment, the primer layer 6 is made of epoxy resin.

[0022] By adopting the primer layer 6 made of epoxy resin, the protective performance of the coating is enhanced.

[0023] Further, in another embodiment, the topcoat layer 7 is made of acrylic or polyurethane paint.

[0024] By adopting the topcoat layer 7 made of acrylic or polyurethane paint, good weather resistance and decorative effects are provided.

[0025] Based on the description and drawings of the present invention, those skilled in the art can easily manufacture or use an anti-rust galvanized steel door of the present invention and can achieve the positive effects recorded in the present invention.

[0026] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the orientation or positional relationship in the present invention are only for illustrative purposes and cannot be understood as a limitation to this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood by combining the drawings and according to the specific circumstances.

[0027] Unless otherwise clearly defined and limited, in this utility model, if there are terms such as "set", "connected" and "coupled", they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific situations.

[0028] As mentioned above, the above are only the preferred embodiments of this utility model, and do not impose any form of limitation on this utility model. Any simple modification or equivalent change made to the above embodiments based on the technical essence of this utility model falls within the protection scope of this utility model.

Claims

1. A rust-resistant galvanized steel door, characterized by: The invention comprises a door body, wherein the door body comprises an outer door panel (1) and an inner door panel (2), wherein a filling cavity is provided between the outer door panel (1) and the inner door panel (2); a filler (3) is provided in the filling cavity, and two side surfaces of the filler (3) are respectively bonded to the inner side surfaces of the outer door panel (1) and the inner door panel (2); the outer surfaces of the outer door panel (1) and the inner door panel (2) are both provided with a galvanized layer (4), the surface of the galvanized layer (4) is provided with a passivation layer (5), the surface of the passivation layer (5) is provided with a primer layer (6), and the outer surface of the primer layer (6) is provided with a topcoat layer (7).

2. The anti-corrosion galvanized steel door according to claim 1, characterized in that: The outer door panel (1) and the inner door panel (2) are both made of cold-rolled steel, and the inner side surfaces of the outer door panel (1) and the inner door panel (2) are both fixedly connected with a keel (8).

3. The anti-corrosion galvanized steel door according to claim 1, characterized in that: The filler (3) is polyurethane foam.

4. The anti-corrosion galvanized steel door according to claim 1, characterized in that: The material of the primer layer (6) is epoxy resin.

5. The anti-corrosion galvanized steel door according to claim 1, characterized in that: The material of the topcoat layer (7) is acrylic acid or polyurethane paint.

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