Tensile integrated cold-rolled strip steel

Abstract

The utility model discloses tensile integrated cold-rolled strip steel, and relates to the technical field of cold-rolled strip steel. The cold-rolled strip steel comprises low-carbon cold-rolled steel, a cold-rolled strip steel body, a first low-carbon microalloyed steel middle layer located on the outer wall of the low-carbon cold-rolled steel, a second medium-carbon steel middle layer located on the outer wall of the first low-carbon microalloyed steel middle layer, and high-strength hot-rolled steel located on the outer wall of the second medium-carbon steel middle layer. And; the pressing grooves are distributed in the outer side of the cold-rolled strip steel body at equal intervals, and the particles are located on the inner walls of the pressing grooves and distributed at equal intervals. According to the utility model, the multilayer structure and the stable structure of the cold-rolled strip steel body are arranged, so that the problem that the tensile resistance is insufficient because the thickness of the cold-rolled strip steel is relatively thin and the tensile resistance of the material is poor is solved.

Description

Technical Field

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

[0002] Integrated cold-rolled strip refers to steel strip that has completed the cold rolling process on a continuous production line. This production method integrates multiple processes into one system to achieve an efficient and automated production process. The existing technology has improved the oxidation resistance of cold-rolled strip, but its tensile resistance is insufficient.

[0003] A Chinese patent discloses an oxidation-resistant cold-rolled steel strip (authorization announcement number CN217729897U). The patented technology includes a first steel strip layer, an aluminum strip layer, and a second steel strip layer arranged in sequence from top to bottom. An adhesive layer is fixed between the first steel strip layer and the aluminum strip layer, an adhesive layer is fixed between the aluminum strip layer and the second steel strip layer, a carbon fiber layer is fixed inside the adhesive layer, a first galvanized layer is provided on the upper surface of the first steel strip layer, and a second galvanized layer is provided on the lower surface of the second steel strip layer. The cold-rolled steel strip in the utility model is composed of two layers of steel strip and an aluminum strip layer, and a galvanized layer is provided on the surface of the steel strip layer, which greatly increases the oxidation resistance of the steel strip; a carbon fiber layer is fixed inside the adhesive layer, which increases the strength of the steel strip and avoids the steel strip from breaking.

[0004] This patented technology has significant advantages in oxidation resistance when used, but it still has shortcomings when used, especially during use, because the thickness of the cold-rolled strip is thin and the material has poor tensile resistance, so the tensile resistance is insufficient. Therefore, technical personnel in this field provide a tensile-resistant integrated cold-rolled strip to solve the problems raised in the above background technology. Utility Model Content

[0005] 1. Technical solution

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a tensile-resistant integrated cold-rolled steel strip, comprising low-carbon cold-rolled steel,

[0008] The cold-rolled steel strip body comprises a low-carbon microalloy steel intermediate layer 1 located on the outer wall of the low-carbon cold-rolled steel, a medium-carbon steel intermediate layer 2 located on the outer wall of the low-carbon microalloy steel intermediate layer 1, and a high-strength hot-rolled steel located on the outer wall of the medium-carbon steel intermediate layer 2;

[0009] as well as;

[0010] Stable structure, with evenly spaced grooves on the outside of the cold-rolled strip body and evenly spaced particles on the inner wall of the grooves.

[0011] Furthermore, the outer wall of the high-strength hot-rolled steel is provided with a galvanized coating, and the thickness of the galvanized coating is 10 μm;

[0012] Specifically, a 10 μm thick galvanized coating covers the entire surface of the steel strip, providing corrosion resistance and appearance protection.

[0013] Further, the thickness of the low carbon cold rolled steel is 3.2 mm, and the thickness of the low carbon micro alloy steel middle layer is 1 mm;

[0014] Specifically, a 3.2 mm thick low carbon cold rolled steel provides a substrate for the cold rolled strip, providing stability, and a 1 mm thick low carbon micro alloy steel intermediate layer has deformation and bending performance capabilities.

[0015] Furthermore, the thickness of the second intermediate layer of medium carbon steel is 1.8 mm, and the thickness of the high-strength hot-rolled steel is 1.5 mm;

[0016] Specifically, the 1.8 mm thick medium carbon steel middle layer improves the strength of the cold-rolled strip, and the 1.5 mm thick high-strength hot-rolled steel improves the strength and rigidity of the cold-rolled strip.

[0017] Furthermore, inner chamfers are provided on the inner walls on both sides of the pressing groove, the inner walls on both sides of the pressing groove are 90°, and the inner chamfers are in the shape of arcs;

[0018] Specifically, the inner angle of the pressure groove has a natural arc transition, which improves the strength during hard pulling.

[0019] Furthermore, an outer chamfer is provided between the upper end of the groove and the cold-rolled steel strip body, and the outer chamfer is in an arc shape;

[0020] Specifically, when installing the cold-rolled strip, the arc-shaped outer chamfer is used to reduce the risk of workers being scratched.

[0021] 2. Beneficial effects

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] In the utility model, low-carbon cold-rolled steel provides stability and reliability, a low-carbon microalloy steel middle layer one enhances the internal organization and toughness, and provides better deformation and bending performance, and a high-strength hot-rolled steel and medium-carbon steel middle layer two provide the main strength and hardness, and are used to increase the overall tensile performance. With different combinations of materials in each layer, the tensile resistance, wear resistance, corrosion resistance and other characteristics can be comprehensively exerted to form a multi-layer cold-rolled steel strip with strong tensile resistance;

[0024] At the same time, a stable structure is pressed on the outside of the cold-rolled steel strip body, and the arrangement of the pressed grooves and particles improves the gripping force on the surface of the object when the coating material is bonded.

[0025] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the main three-dimensional structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from a first perspective when viewed from above;

[0029] Figure 3 It is a side view stereoscopic structural schematic diagram of the utility model;

[0030] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model when viewed from a top second viewing angle.

[0031] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0032] 100. Cold-rolled steel strip body; 101. Low-carbon cold-rolled steel; 102. Low-carbon microalloy steel intermediate layer 1; 103. Medium-carbon steel intermediate layer 2; 104. High-strength hot-rolled steel; 105. Galvanized coating;

[0033] 200, stable structure; 201, groove; 202, inner chamfer; 203, outer chamfer; 204, particles. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0036] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0037] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0038] Example 1

[0039] See also Figure 1-Figure 4 As shown, this embodiment is a tensile integrated cold-rolled steel strip, comprising low-carbon cold-rolled steel 101,

[0040] The cold-rolled steel strip body 100 comprises a low-carbon microalloyed steel intermediate layer 102 located on the outer wall of the low-carbon cold-rolled steel 101, a medium-carbon steel intermediate layer 2 103 located on the outer wall of the low-carbon microalloyed steel intermediate layer 102, and a high-strength hot-rolled steel 104 located on the outer wall of the medium-carbon steel intermediate layer 2 103;

[0041] The outer wall of the high-strength hot-rolled steel 104 is provided with a galvanized coating 105, and the thickness of the galvanized coating 105 is 10 μm;

[0042] The thickness of the low carbon cold rolled steel 101 is 3.2 mm, and the thickness of the low carbon micro alloy steel middle layer 102 is 1 mm;

[0043] The thickness of the medium carbon steel middle layer 103 is 1.8 mm, and the thickness of the high strength hot rolled steel 104 is 1.5 mm;

[0044] Use of the cold-rolled steel strip body 100;

[0045] Low carbon cold rolled steel 101 provides good ductility and toughness, and has a smooth surface texture, which is suitable for subsequent processing. The strength of the low carbon microalloy steel intermediate layer 102 is slightly higher than that of the ordinary low carbon cold rolled steel 101, which improves fatigue resistance and formability. The medium carbon steel intermediate layer 2 103 provides higher strength and hardness, improves the stability of the overall structure, and increases the bearing capacity. The high strength hot rolled steel 104 provides extremely high strength and rigidity, excellent compressive resistance, and enhances the bearing capacity of the overall component. The galvanized coating 105 provides corrosion resistance, delays steel oxidation, extends service life, and reduces maintenance costs. In the design of the cold rolled strip steel structure, the nested design of each layer of material makes the whole have the ductility of low carbon steel, the hardness and bearing capacity of medium carbon steel, the strength and compressive resistance of high strength hot rolled steel 104, and is accompanied by an anti-corrosion galvanized coating 105, which effectively achieves the goal of excellent tensile performance.

[0046] Example 2

[0047] See also Figure 1-Figure 4 As shown, this embodiment is based on the embodiment 1 and also includes:

[0048] as well as;

[0049] The stable structure 200 is formed of grooves 201 equidistantly distributed on the outside of the cold-rolled steel strip body 100 and particles 204 equidistantly distributed on the inner wall of the grooves 201 ;

[0050] The inner walls on both sides of the groove 201 are provided with inner chamfers 202, the inner walls on both sides of the groove 201 are 90 degrees, and the inner chamfers 202 are in an arc shape;

[0051] An outer chamfer 203 is provided between the upper end of the groove 201 and the cold-rolled steel strip body 100, and the outer chamfer 203 is in an arc shape;

[0052] Use of the stable structure 200;

[0053] The equidistant distribution of the grooves 201 and the inner wall particles 204 increases the friction of the surface and improves the gripping stability with other components. The arc shape of the inner chamfer 202 can reduce stress concentration and avoid cracks while maintaining the overall strength and stability of the structure. The arc shape of the outer chamfer 203 can not only reduce the risk of damage, but also help to improve hand comfort and avoid discomfort caused by sharp edges. It effectively improves the gripping force and stability of the cold-rolled strip, making it easier to firmly fix it in the required position during operation.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tensile integrated cold-rolled steel strip, characterized in that: Including low carbon cold rolled steel (101), The cold-rolled steel strip body (100) comprises a low-carbon microalloyed steel intermediate layer 1 (102) located on the outer wall of the low-carbon cold-rolled steel (101), a medium-carbon steel intermediate layer 2 (103) located on the outer wall of the low-carbon microalloyed steel intermediate layer 1 (102), and a high-strength hot-rolled steel (104) located on the outer wall of the medium-carbon steel intermediate layer 2 (103); as well as; The stable structure (200) comprises grooves (201) equidistantly distributed on the outside of the cold-rolled steel strip body (100) and particles (204) equidistantly distributed on the inner wall of the grooves (201).

2. The tensile-resistant integrated cold-rolled steel strip according to claim 1, characterized in that: The outer wall of the high-strength hot-rolled steel (104) is provided with a galvanized coating (105), and the thickness of the galvanized coating (105) is 10 μm.

3. The tensile-resistant integrated cold-rolled steel strip according to claim 1, characterized in that: The thickness of the low carbon cold rolled steel (101) is 3.2 mm, and the thickness of the low carbon micro alloy steel intermediate layer 1 (102) is 1 mm.

4. The tensile-resistant integrated cold-rolled steel strip according to claim 1, characterized in that: The thickness of the second medium carbon steel intermediate layer (103) is 1.8 mm, and the thickness of the high strength hot rolled steel (104) is 1.5 mm.

5. The tensile-resistant integrated cold-rolled steel strip according to claim 1, characterized in that: Inner chamfers (202) are provided on the inner walls on both sides of the pressing groove (201), the inner walls on both sides of the pressing groove (201) are at an angle of 90°, and the inner chamfers (202) are in the shape of an arc.

6. The tensile-resistant integrated cold-rolled steel strip according to claim 1, characterized in that: An outer chamfer (203) is provided between the upper end of the pressing groove (201) and the cold-rolled steel strip body (100), and the outer chamfer (203) is in an arc shape.

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