High-plasticity cold-rolled strip steel for deep stamping

Abstract

The utility model discloses a high-plasticity cold-rolled strip steel for deep drawing, which comprises a strip steel substrate which comprises an upper layer and a lower layer. The upper portion of the upper layer is provided with a plurality of protruding structures distributed in an array mode, and the protruding structures are hemispherical. The lower part of the upper layer is provided with a first wave-shaped surface, and the upper part of the lower layer is provided with a second wave-shaped surface; the first wave-shaped surface is tightly attached to the second wave-shaped surface; a plurality of first reinforcing ribs which are uniformly distributed at equal intervals in the length direction are arranged in the upper layer; and a plurality of second reinforcing ribs which are uniformly distributed at equal intervals along the length direction are arranged in the lower layer. The upper layer and the lower layer are arranged, the upper portion of the upper layer is provided with a plurality of protruding structures, the surface area can be increased, stress can be better dispersed in the stamping process, and the forming performance of materials is improved; and the first wave-shaped surface of the upper layer is tightly attached to the second wave-shaped surface of the lower layer, so that relative sliding between layers is reduced, and the overall stability and integrity of the strip steel are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of cold-rolled strip steel technology, specifically to a high-plasticity cold-rolled strip steel for deep drawing. Background Technology

[0002] In modern industrial production, cold-rolled strip steel, as an important metallic material, is widely used in many fields such as automobile manufacturing and electronic equipment manufacturing. Especially in deep drawing processes, extremely high performance requirements are placed on cold-rolled strip steel. Traditional cold-rolled strip steel, during deep drawing, struggles to evenly distribute stress, easily leading to excessive localized deformation or even breakage, severely impacting product quality and production efficiency. Furthermore, traditional cold-rolled strip steel generally uses a single material, failing to meet the demands for high plasticity and high strength. While materials with good plasticity are easy to form during stamping, the product strength is insufficient; conversely, using high-strength materials results in poor plasticity, making deep drawing difficult.

[0003] Based on the above, this utility model proposes a high-plasticity cold-rolled strip steel for deep drawing, which can effectively solve the above problems. Utility Model Content

[0004] This utility model addresses the shortcomings of the existing technology by providing a high-plasticity cold-rolled strip steel for deep drawing.

[0005] This utility model is achieved through the following technical solution:

[0006] A high-plasticity cold-rolled strip for deep drawing includes a strip substrate comprising an upper layer and a lower layer; the upper part of the upper layer has a plurality of arrayed protrusions, the protrusions being hemispherical in shape; the lower part of the upper layer has a first wavy surface, and the upper part of the lower layer has a second wavy surface; the first wavy surface and the second wavy surface are closely fitted together; the interior of the upper layer has a plurality of first reinforcing ribs evenly distributed along the length direction; the interior of the lower layer has a plurality of second reinforcing ribs evenly distributed along the length direction.

[0007] According to the above technical solution, as a further preferred technical solution, a connecting block is provided at one end of the strip steel substrate, and a connecting groove is provided at the other end of the strip steel substrate to cooperate with and connect with the connecting block; both the connecting block and the connecting groove are isosceles triangles.

[0008] According to the above technical solution, as a further preferred technical solution, the upper layer is made of aluminum alloy.

[0009] According to the above technical solution, as a further preferred technical solution, the material of the protruding structure is the same as the material of the upper layer.

[0010] According to the above technical solution, as a further preferred technical solution, the material of the lower layer is high-strength steel.

[0011] According to the above technical solution, as a further preferred technical solution, the first reinforcing rib and the second reinforcing rib are both made of martensitic stainless steel, and the cross-sections of the first reinforcing rib and the second reinforcing rib are both circular.

[0012] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0013] This utility model provides a high-plasticity cold-rolled strip steel for deep drawing. By setting an upper layer and a lower layer, the upper part of which is provided with multiple protruding structures, the surface area can be increased, which can better disperse stress during stamping and improve the forming performance of the material. Furthermore, the first wavy surface of the upper layer and the second wavy surface of the lower layer are closely fitted, reducing the relative sliding between layers and enhancing the overall stability and integrity of the strip steel, ensuring that the structural integrity of the strip steel is maintained during deep drawing. At the same time, the setting of the first and second reinforcing ribs can significantly improve the strength and rigidity of the strip steel in the length direction, making it more resistant to external forces during deep drawing, less prone to deformation or breakage, and ensuring product quality and processing accuracy. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is an exploded view of the present invention. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the preferred embodiments of this utility model are described below in conjunction with specific examples. However, it should be understood that the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. For better illustration of this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the drawings for those skilled in the art. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0017] A high-plasticity cold-rolled strip for deep drawing includes a strip substrate, which comprises an upper layer 1 and a lower layer 2. The upper layer 1 has a plurality of arrayed protrusions 11 on its upper part, the protrusions 11 being hemispherical in shape. The lower part of the upper layer 1 has a first wavy surface 12, and the upper part of the lower layer 2 has a second wavy surface 21. The first wavy surface 12 and the second wavy surface 21 are closely fitted together. The interior of the upper layer 1 has a plurality of first reinforcing ribs 13 evenly distributed along the length direction. The interior of the lower layer 2 has a plurality of second reinforcing ribs 22 evenly distributed along the length direction.

[0018] The strip steel substrate of this utility model includes an upper layer 1 and a lower layer 2. The upper part of the upper layer is provided with multiple protruding structures, which can increase the surface area and better disperse stress during stamping, thereby improving the forming performance of the material. Furthermore, the first wavy surface 12 of the upper layer 1 and the second wavy surface 21 of the lower layer 2 are closely fitted, reducing the relative sliding between layers and enhancing the overall stability and integrity of the strip steel, ensuring that the structural integrity of the strip steel is maintained during deep drawing. At the same time, the provision of the first reinforcing rib 13 and the second reinforcing rib 22 can significantly improve the strength and rigidity of the strip steel in the length direction, making it more resistant to external forces during deep drawing, less prone to deformation or breakage, and ensuring product quality and processing accuracy.

[0019] Furthermore, in another embodiment, a connecting block 3 is provided at one end of the strip steel substrate, and a connecting groove 4 is provided at the other end of the strip steel substrate to cooperate with and connect with the connecting block 3; both the connecting block 3 and the connecting groove 4 are isosceles triangles.

[0020] By setting up connecting block 3 and connecting groove 4, when multiple strips of steel need to be spliced, the connection and positioning can be carried out quickly and accurately, improving construction or processing efficiency.

[0021] Furthermore, in another embodiment, the upper layer 1 is made of aluminum alloy.

[0022] By using an upper layer made of aluminum alloy, which has a low density, the overall weight of the strip can be effectively reduced. While meeting the material plasticity requirements of deep drawing, the weight of the product is reduced, making it suitable for applications where weight is a concern.

[0023] Furthermore, in another embodiment, the material of the protrusion structure 11 is the same as the material of the upper layer 1.

[0024] By setting up a raised structure 11, and the material of the raised structure 11 being the same as that of the upper layer 1, the consistency of the material of the upper layer 1 of the strip is ensured. During the deep drawing process, the raised structure 11 and the substrate of the upper layer 1 can deform together, avoiding stress concentration or deformation incoordination caused by material differences, and further improving the overall forming performance and product quality of the strip.

[0025] Furthermore, in another embodiment, the lower layer 2 is made of high-strength steel.

[0026] By using the lower layer 2 made of high-strength steel, which has high strength and hardness, it can provide good support and load-bearing capacity for the strip. Combined with the upper layer 1 aluminum alloy, the strip has both the good plasticity of aluminum alloy and the high strength of high-strength steel, which meets the requirements of high plasticity deep drawing for comprehensive material performance. It is suitable for manufacturing parts with high requirements for strength and formability.

[0027] Furthermore, in another embodiment, the first reinforcing rib 13 and the second reinforcing rib 22 are both made of martensitic stainless steel, and the cross-sections of the first reinforcing rib 13 and the second reinforcing rib 22 are both circular.

[0028] By setting the first reinforcing rib 12 and the second reinforcing rib 22 made of martensitic stainless steel, the martensitic stainless steel has high strength and good corrosion resistance, which can not only enhance the strength of the strip in the length direction, but also improve the corrosion resistance of the strip in various environments and extend the service life of the product.

[0029] Based on the description and drawings of this utility model, those skilled in the art can easily manufacture or use the high-plasticity cold-rolled strip steel for deep drawing according to this utility model, and can produce the positive effects described in this utility model.

[0030] Unless otherwise specified, in this utility model, terms such as "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this utility model are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the accompanying drawings and according to the specific circumstances.

[0031] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A high-plasticity deep-drawing cold-rolled steel strip, characterized by: The material includes a strip steel substrate, which comprises an upper layer (1) and a lower layer (2); the upper layer (1) has a plurality of arrayed protrusions (11) on its upper part, and the protrusions (11) are hemispherical in shape; the lower part of the upper layer (1) has a first wavy surface (12), and the upper part of the lower layer (2) has a second wavy surface (21); the first wavy surface (12) and the second wavy surface (21) are closely fitted together; the interior of the upper layer (1) has a plurality of first reinforcing ribs (13) evenly distributed at equal intervals along the length direction; the interior of the lower layer (2) has a plurality of second reinforcing ribs (22) evenly distributed at equal intervals along the length direction.

2. A cold-rolled strip steel for high-plasticity deep drawing according to claim 1, characterized in that: A connecting block (3) is provided at one end of the strip steel substrate, and a connecting groove (4) is provided at the other end of the strip steel substrate to cooperate with the connecting block (3); both the connecting block (3) and the connecting groove (4) are isosceles triangles.

3. A cold-rolled strip steel for high-plasticity deep drawing according to claim 1, characterized in that: The upper layer (1) is made of aluminum alloy.

4. A cold-rolled strip steel for high-plasticity deep drawing according to claim 3, characterized in that: The material of the protruding structure (11) is the same as that of the upper layer (1).

5. The cold-rolled strip steel for deep drawing of high ductility according to claim 1, characterized by: The lower layer (2) is made of high-strength steel.

6. A cold-rolled strip steel for high-plasticity deep drawing according to claim 1, characterized by: The first reinforcing rib (13) and the second reinforcing rib (22) are both made of martensitic stainless steel, and the cross-sections of the first reinforcing rib (13) and the second reinforcing rib (22) are both circular.

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