Cold-crack-resistant cold-rolled strip steel
By setting arcuate ridges and grooves on the cold-rolled strip and setting a heat-resistant layer and thermal insulation layer on the surface, the problems of scattering and poor insulation after coiling are solved, and stable fixation and effective insulation are achieved.
Patent Information
- Application Number
- CN202421971174.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The existing cold-rolled strip steel is prone to dissipation due to rope breakage after coiling, and its insulation effect is poor, and cold cracks are prone to occur at low temperatures.
Two symmetrically distributed arcuate grooves are fixedly arranged on the outer plate surface of the cold-rolled strip, and two symmetrically distributed arcuate grooves are opened on the inner plate surface. At the same time, an aluminum-copper-lithium heat-resistant layer and a composite aluminum foil insulation layer are respectively provided on the upper and lower surfaces of the cold-rolled strip.
Through the design of arc-shaped corrugated and grooves, the cold-rolled strip can be fixed and stable during coiling to avoid distraction. At the same time, the aluminum-copper-lithium heat-resistant layer and composite aluminum foil insulation layer improve the insulation effect and avoid the occurrence of cold cracks.
Smart Images
Figure CN222836656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cold-rolled steel strips, in particular to a cold-crack resistant cold-rolled steel strip. Background Art
[0002] Cold rolled strip steel is made of hot rolled strip steel or steel plate and is rolled into finished products by cold rolling mill at room temperature. Cold rolled strip steel and thin plate have the advantages of smooth and flat surface, high dimensional accuracy and good mechanical properties. Most of the products are in coils, and a large part of them are processed into coated steel plates before leaving the factory. Coiled cold rolled thin plates have high production efficiency, are easy to use, and are conducive to subsequent processing. Therefore, they are widely used and have gradually replaced hot stacked rolled thin plates of the same thickness. However, the existing cold rolled strip steel is fixed with ropes after coiling. However, the ropes are easy to break, which makes the coiled cold rolled strip steel easy to become scattered. At the same time, the thermal insulation effect of the existing cold rolled strip steel is poor, and cold cracks will occur when used at low temperatures.
[0003] Therefore, it is necessary to provide a new cold-crack resistant 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 cold-rolled steel strip that is resistant to cold cracking.
[0005] The cold-crack resistant cold-rolled steel strip provided by the utility model comprises a cold-rolled steel strip body, the outer plate surface of the cold-rolled steel strip body is fixedly provided with two symmetrically distributed arc-shaped ridges, and the inner plate surface of the cold-rolled steel strip body is provided with two symmetrically distributed arc-shaped grooves;
[0006] The cold-rolled steel strip body comprises a cold-rolled steel strip layer, and the upper and lower surfaces of the cold-rolled steel strip layer are respectively provided with an aluminum-copper-lithium heat-resistant layer and a composite aluminum foil insulation layer.
[0007] Preferably, the positions of the arc-shaped ribs and the arc-shaped grooves correspond one to one, and the arc-shaped ribs and the arc-shaped grooves are interference fit with each other.
[0008] Preferably, the aluminum-copper-lithium heat-resistant layer is coated with an aluminum oxide coating.
[0009] Preferably, a maraging steel layer is embedded on the lower surface of the composite aluminum foil insulation layer.
[0010] Preferably, a titanium alloy layer with a composite structure is provided on the lower surface of the maraging steel layer.
[0011] Compared with the related art, the cold-crack resistant cold-rolled steel strip provided by the utility model has the following beneficial effects:
[0012] The upper and lower surfaces of the cold-rolled steel strip body of the utility model are respectively provided with arc ridges and arc grooves. Therefore, when the cold-rolled steel strip body is rolled up, the arc ridges on the outer ring wall of the cold-rolled steel strip body can be pressed into the arc grooves on the inner ring of the cold-rolled steel strip body, so that the rolled cold-rolled steel strip body is fixed and will not be easily scattered. When the cold-rolled steel strip body needs to be used, the outer ring of the cold-rolled steel strip body can be pulled outward obliquely to separate the cold-rolled steel strip body at that location. The operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 A schematic structural diagram of a preferred embodiment of the cold-crack resistant cold-rolled steel strip provided by the utility model;
[0014] Figure 2 for Figure 1 The schematic diagram of the distribution structure of arc-shaped ridges and arc-shaped grooves on the cold-rolled steel strip body is shown;
[0015] Figure 3 for Figure 1 Schematic diagram of the structure of the cold-rolled strip steel body shown.
[0016] Numbers in the figure: 1, cold-rolled strip body; 11, arc-shaped ridges; 12, arc-shaped grooves; 101, cold-rolled strip layer; 102, aluminum-copper-lithium heat-resistant layer; 103, alumina coating; 104, composite aluminum foil insulation layer; 105, maraging steel layer; 106, titanium alloy layer. DETAILED DESCRIPTION
[0017] 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.
[0018] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.
[0019] See also Figures 1 to 3 An embodiment of the utility model provides a cold-crack resistant cold-rolled steel strip, and the cold-crack resistant cold-rolled steel strip includes a cold-rolled steel strip body 1.
[0020] In the embodiments of the present invention, please refer to Figure 1 and Figure 2 The outer plate surface of the cold-rolled steel strip body 1 is fixedly provided with two symmetrically distributed arc-shaped ribs 11, and the inner plate surface of the cold-rolled steel strip body 1 is provided with two symmetrically distributed arc-shaped grooves 12, and the positions of the arc-shaped ribs 11 and the arc-shaped grooves 12 correspond one to one, and the arc-shaped ribs 11 and the arc-shaped grooves 12 are interference fit with each other.
[0021] It should be noted that the upper and lower surfaces of the cold-rolled steel strip body 1 are respectively provided with arc-shaped ridges 11 and arc-shaped grooves 12. Therefore, when the cold-rolled steel strip body 1 is coiled, the arc-shaped ridges 11 on the outer ring wall of the cold-rolled steel strip body 1 can be pressed into the arc-shaped grooves 12 on the inner ring of the cold-rolled steel strip body 1, so that the coiled cold-rolled steel strip body 1 is fixed and will not be easily scattered. When the cold-rolled steel strip body 1 needs to be used, the outer ring of the cold-rolled steel strip body 1 can be pulled outward to separate the cold-rolled steel strip body 1 at that location. The operation is simple and convenient.
[0022] In the embodiments of the present invention, please refer to Figure 1 and Figure 3 The cold-rolled steel strip body 1 comprises a cold-rolled steel strip layer 101, and the upper and lower surfaces of the cold-rolled steel strip layer 101 are respectively provided with an aluminum-copper-lithium heat-resistant layer 102 and a composite aluminum foil insulation layer 104, and the aluminum-copper-lithium heat-resistant layer 102 is coated with an aluminum oxide coating 103, and the lower surface of the composite aluminum foil insulation layer 104 is embedded with a maraging steel layer 105, and the lower surface of the maraging steel layer 105 is provided with a titanium alloy layer 106 of a composite structure.
[0023] It should be noted that the aluminum-copper-lithium heat-resistant layer 102 can maintain good mechanical properties and chemical stability in a high temperature environment, which is convenient for people to use cold-rolled steel strips at high temperatures, and the alumina coating 103 greatly improves the wear resistance of the cold-rolled steel strips. The composite aluminum foil insulation layer 104 can prevent the heat energy transfer inside the cold-rolled steel strip body 1, thereby reducing the heat energy contained in the cold-rolled steel strip body 1, ensuring the temperature of the cold-rolled steel strip body 1, and avoiding the hidden danger of cold cracks in the cold-rolled steel strip body 1 due to low temperature. The martensitic aging steel layer 105 can greatly increase the tensile strength of the cold-rolled steel strip and avoid damage to the cold-rolled steel strip when subjected to tension. The titanium alloy layer 106 can greatly enhance the strength of the cold-rolled steel strip.
[0024] The working principle of the cold-crack resistant cold-rolled strip steel provided by the utility model is as follows:
[0025] The upper and lower surfaces of the cold-rolled steel strip body 1 are respectively provided with arc ribs 11 and arc grooves 12. Therefore, when the cold-rolled steel strip body 1 is rolled up, the arc ribs 11 on the outer ring wall of the cold-rolled steel strip body 1 can be pressed into the arc grooves 12 on the inner ring of the cold-rolled steel strip body 1, so that the rolled cold-rolled steel strip body 1 is fixed and will not be easily scattered. When the cold-rolled steel strip body 1 is needed, the outer ring of the cold-rolled steel strip body 1 can be pulled outward to separate the cold-rolled steel strip body 1 at that location. The operation is simple and convenient, and the aluminum-copper-lithium heat-resistant layer 102 provided on the cold-rolled steel strip body 1 can also maintain good mechanical properties under high temperature environment. The performance and chemical stability make it convenient for people to use the cold-rolled steel strip at high temperatures, and the alumina coating 103 greatly improves the wear resistance of the cold-rolled steel strip. The composite aluminum foil insulation layer 104 can prevent the heat energy transfer inside the cold-rolled steel strip body 1, thereby reducing the heat energy contained inside the cold-rolled steel strip body 1, ensuring the temperature of the cold-rolled steel strip body 1, and avoiding the hidden danger of cold cracks in the cold-rolled steel strip body 1 due to low temperature. The martensitic aging steel layer 105 can greatly increase the tensile strength of the cold-rolled steel strip and avoid damage to the cold-rolled steel strip when subjected to tension. The titanium alloy layer 106 can greatly enhance the strength of the cold-rolled steel strip.
[0026] 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 cold-crack resistant cold-rolled steel strip, characterized in that: It comprises a cold-rolled steel strip body (1), the outer plate surface of the cold-rolled steel strip body (1) is fixedly provided with two symmetrically distributed arc-shaped ridges (11), and the inner plate surface of the cold-rolled steel strip body (1) is provided with two symmetrically distributed arc-shaped grooves (12); The cold-rolled steel strip body (1) comprises a cold-rolled steel strip layer (101), and the upper and lower surfaces of the cold-rolled steel strip layer (101) are respectively provided with an aluminum-copper-lithium heat-resistant layer (102) and a composite aluminum foil heat-insulating layer (104).
2. The cold-crack resistant cold-rolled steel strip according to claim 1, characterized in that: The positions of the arc-shaped ribs (11) and the arc-shaped grooves (12) correspond one to one, and the arc-shaped ribs (11) and the arc-shaped grooves (12) are interference-fitted with each other.
3. The cold-crack resistant cold-rolled steel strip according to claim 1, characterized in that: The aluminum-copper-lithium heat-resistant layer (102) is coated with an aluminum oxide coating (103).
4. The cold-crack resistant cold-rolled steel strip according to claim 3, characterized in that: A maraging steel layer (105) is embedded on the lower surface of the composite aluminum foil thermal insulation layer (104).
5. The cold-crack resistant cold-rolled steel strip according to claim 4, characterized in that: A titanium alloy layer (106) with a composite structure is provided on the lower surface of the maraging steel layer (105).