High-tensile cold-rolled strip steel

Abstract

The utility model relates to the technical field of cold-rolled strip steel, in particular to high-tensile cold-rolled strip steel. The high-tensile cold-rolled strip steel comprises a maraging steel layer and cold-rolled strip steel bodies compounded on the two side faces of the maraging steel layer. A plurality of hollow cavities which are distributed at equal intervals are formed in the maraging steel layer, and elastic corrugated steel plates are fixedly embedded in the inner walls of the two sides of each hollow cavity; the cold-rolled strip steel body is provided with two layers, and a plurality of abutting steel plates distributed at equal intervals are fixedly erected between the two layers of cold-rolled strip steel bodies. The maraging steel layer in the high-tensile-strength type cold-rolled strip steel can greatly improve the tensile strength of the cold-rolled strip steel, the cold-rolled strip steel is prevented from being damaged when being subjected to tensile force, and the elastic corrugated steel plate on the other side is stretched while the elastic corrugated steel plate in the tensile direction is pressed through the abutting steel plate. And the elastic corrugated steel plate is of an elastic structure, so that the tensile property of the cold-rolled strip steel is further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-rolled steel strips, in particular to a high-tensile-resistance cold-rolled steel strip. Background Art

[0002] Cold-rolled steel strip refers to hot-rolled steel strip and steel plate as raw materials, which are rolled into steel strip and thin plate by cold rolling mill at room temperature. Cold-rolled steel strip and thin plate are generally 0.1-3mm thick and 100-2000mm wide. Steel strip with a thickness of less than 0.2mm is called ultra-thin steel strip or foil, which is a product further processed by cold-rolled steel strip. The production process of cold-rolled steel strip mainly includes billet preparation, pickling, cold rolling, annealing and finishing. Among them, cold rolling is the main process to deform the material. The hot-rolled steel strip or steel plate is rolled into cold-rolled steel strip of the required thickness by the cold rolling mill. Annealing is to eliminate the hardening of cold rolling work, so that the steel plate recrystallizes and softens, and has good plasticity. Finishing includes inspection, shearing, straightening, printing, classification and packaging to ensure the quality and appearance of the product. However, the current tensile strength of cold-rolled strip is not high and cannot meet people's needs.

[0003] Therefore, it is necessary to provide a new high tensile strength cold-rolled strip steel to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a high tensile strength cold-rolled steel strip.

[0005] The high tensile strength cold-rolled steel strip provided by the utility model comprises:

[0006] Maraging steel layer, and

[0007] A cold-rolled steel strip body composited on both sides of the maraging steel layer;

[0008] The maraging steel layer is provided with a plurality of equally spaced hollow cavities, and elastic corrugated steel plates are fixedly embedded on the inner walls on both sides of each of the hollow cavities;

[0009] Wherein, the cold-rolled steel strip body is provided with two layers, and a plurality of equally spaced abutting steel plates are fixedly mounted between the two layers of the cold-rolled steel strip body;

[0010] The two layers of cold-rolled steel strip bodies are respectively fixedly embedded on the upper and lower sides of the maraging steel layer, and the abutting steel plates between the two layers of cold-rolled steel strip bodies are respectively inserted into the hollow cavities opened in the maraging steel layer.

[0011] Preferably, the two side walls of the abutting steel plate located in the hollow cavity are respectively fixedly connected to the connecting plate surfaces of the two elastic corrugated steel plates.

[0012] Preferably, the cold-rolled strip steel body comprises hard alloy steel, an outer plate wall of the hard alloy steel is provided with an aluminum-copper-lithium heat-resistant layer, and an outer surface of the aluminum-copper-lithium heat-resistant layer is provided with an anti-rust layer.

[0013] Preferably, the anti-rust layer is made of high manganese steel material.

[0014] Preferably, an RTV anti-fouling flashover coating layer is sprayed on the anti-rust layer.

[0015] Compared with the related art, the high tensile cold-rolled strip steel provided by the utility model has the following beneficial effects:

[0016] The utility model provides a maraging steel layer in the interlayer between two layers of cold-rolled steel strip bodies. On the one hand, the maraging steel layer has higher toughness than other ultra-high strength steels of the same strength level, and the maraging steel layer can greatly increase the tensile strength of the cold-rolled steel strip, thereby preventing the cold-rolled steel strip from being damaged when subjected to tension. On the other hand, when the cold-rolled steel strip bodies on both sides of the maraging steel layer are subjected to tension, the elastic folded steel plates in the tensile direction can be pressed by the abutting steel plates while the elastic folded steel plates on the other side are stretched. Since the elastic folded steel plates are elastic structures, the tensile resistance of the cold-rolled steel strip is further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a preferred embodiment of the high tensile cold-rolled strip steel provided by the utility model;

[0018] Figure 2 for Figure 1 The cross-sectional view and partially enlarged structural schematic diagram shown;

[0019] Figure 3 for Figure 2 Schematic diagram of the structure of the maraging steel layer shown;

[0020] Figure 4 for Figure 2 Schematic diagram of the structure of the cold-rolled strip steel body shown.

[0021] Numbers in the figure: 1, maraging steel layer; 1a, hollow cavity; 11, elastic corrugated steel plate; 2, cold-rolled strip steel body; 21, abutting steel plate; 201, hard alloy steel; 202, aluminum-copper-lithium heat-resistant layer; 203, anti-rust layer; 204, RTV anti-fouling flashover coating layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0023] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0024] See also Figures 1 to 4 The embodiment of the utility model provides a high tensile strength cold-rolled steel strip, and the high tensile strength cold-rolled steel strip includes: a maraging steel layer 1 and a cold-rolled steel strip body 2.

[0025] In the embodiments of the present invention, please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , both sides of the maraging steel layer 1 are compounded with a cold-rolled strip steel body 2. Specifically, a plurality of equally spaced hollow cavities 1a are opened on the maraging steel layer 1, and elastic corrugated steel plates 11 are fixedly embedded on both inner walls of each of the hollow cavities 1a, and the cold-rolled strip steel body 2 is provided with two layers, and a plurality of equally spaced abutting steel plates 21 are fixedly arranged between the two layers of the cold-rolled strip steel bodies 2, and the two layers of the cold-rolled strip steel bodies 2 are respectively fixedly embedded on the upper and lower sides of the maraging steel layer 1, and the abutting steel plates 21 between the two layers of the cold-rolled strip steel bodies 2 are respectively inserted into the hollow cavities 1a opened in the maraging steel layer 1, and the two side walls of the abutting steel plates 21 located in the hollow cavities 1a are respectively fixedly connected to the connecting plate surfaces of the two elastic corrugated steel plates 11.

[0026] It should be noted that: a maraging steel layer 1 is arranged in the interlayer between the two layers of cold-rolled steel strip bodies 2. On the one hand, the maraging steel layer 1 has higher toughness than other ultra-high strength steels of the same strength level, and the maraging steel layer 1 can greatly increase the tensile strength of the cold-rolled steel strip to prevent the cold-rolled steel strip from being damaged when subjected to tension. On the other hand, when the cold-rolled steel strip bodies 2 on both sides of the maraging steel layer 1 are subjected to tension, the elastic corrugated steel plate 11 on the tensile direction can be pressed by the abutting steel plate 21 while the elastic corrugated steel plate 11 on the other side is stretched. Since the elastic corrugated steel plate 11 is an elastic structure, the tensile resistance of the cold-rolled steel strip is further enhanced.

[0027] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The cold-rolled strip steel body 2 includes a hard alloy steel 201, an outer plate wall of the hard alloy steel 201 is provided with an aluminum-copper-lithium heat-resistant layer 202, and an outer surface of the aluminum-copper-lithium heat-resistant layer 202 is provided with an anti-rust layer 203, and the anti-rust layer 203 is made of high-manganese steel material, and an RTV anti-fouling flashover coating layer 204 is sprayed on the anti-rust layer 203.

[0028] It should be noted that: the cemented carbide steel 201 makes the cold-rolled strip body 2 have excellent properties such as high strength and high wear resistance, while the aluminum-copper-lithium heat-resistant layer 202 makes the cold-rolled strip have the characteristics of low density, high strength and good heat resistance. The anti-rust layer 203 made of high-manganese steel material improves the anti-rust function of the cold-rolled strip, and the RTV anti-fouling flash coating layer 204 can prevent external sewage from penetrating into the inner layer of the cold-rolled strip body 2, causing the inner layer to be contaminated or damaged.

[0029] The working principle of the high tensile cold-rolled strip steel provided by the utility model is as follows:

[0030] A maraging steel layer 1 is provided in the interlayer between the two layers of cold-rolled steel strip bodies 2. On the one hand, the maraging steel layer 1 has higher toughness than other ultra-high strength steels of the same strength level, and the maraging steel layer 1 can greatly increase the tensile strength of the cold-rolled steel strip to prevent the cold-rolled steel strip from being damaged when subjected to tension. On the other hand, when the cold-rolled steel strip bodies 2 on both sides of the maraging steel layer 1 are subjected to tension, the elastic corrugated steel plate 11 on the tensile direction can be pressed by the abutting steel plate 21 while the elastic corrugated steel plate 11 on the other side is stretched. Since the elastic corrugated steel plate 11 is an elastic structure, the tensile resistance of the cold-rolled steel strip is further enhanced.

[0031] The hard alloy steel 201 makes the cold-rolled strip body 2 have excellent properties such as high strength and high wear resistance, while the aluminum-copper-lithium heat-resistant layer 202 makes the cold-rolled strip have the characteristics of low density, high strength and good heat resistance. The anti-rust layer 203 made of high-manganese steel material improves the anti-rust function of the cold-rolled strip, and the RTV anti-fouling flash coating layer 204 can prevent external sewage from penetrating into the inner layer of the cold-rolled strip body 2, causing the inner layer to be contaminated or damaged.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high tensile cold-rolled steel strip, characterized in that: include: a maraging steel layer (1), and A cold-rolled steel strip body (2) composited on both sides of the maraging steel layer (1); The maraging steel layer (1) is provided with a plurality of equally spaced hollow cavities (1a), and elastic corrugated steel plates (11) are fixedly embedded on the inner walls on both sides of each hollow cavity (1a); The cold-rolled steel strip body (2) is provided with two layers, and a plurality of equally spaced abutting steel plates (21) are fixedly mounted between the two layers of the cold-rolled steel strip body (2); The two layers of cold-rolled steel strip bodies (2) are respectively fixedly embedded on the upper and lower sides of the maraging steel layer (1), and the abutting steel plates (21) between the two layers of cold-rolled steel strip bodies (2) are respectively inserted into the hollow cavities (1a) opened in the maraging steel layer (1).

2. The high tensile strength cold rolled steel strip according to claim 1, characterized in that: The two side walls of the abutting steel plate (21) located in the hollow cavity (1a) are respectively fixedly connected to the connecting plate surfaces of the two elastic pleated steel plates (11).

3. The high tensile strength cold rolled steel strip according to claim 1, characterized in that: The cold-rolled steel strip body (2) comprises hard alloy steel (201), the outer plate wall of the hard alloy steel (201) is provided with an aluminum-copper-lithium heat-resistant layer (202), and the outer surface of the aluminum-copper-lithium heat-resistant layer (202) is provided with an anti-rust layer (203).

4. The high tensile strength cold rolled steel strip according to claim 3, characterized in that: The anti-rust layer (203) is made of high-manganese steel material.

5. The high tensile strength cold rolled steel strip according to claim 4, characterized in that: An RTV anti-fouling flashover coating layer (204) is sprayed on the anti-rust layer (203).

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