Stainless steel plate with low internal stress

Abstract

The utility model discloses a stainless steel plate with low internal stress. The stainless steel plate comprises a stainless steel base layer, two strengthening layers, two corrosion-resistant layers, two wear-resistant layers and two impact-resistant layers, the two strengthening layers are laminated on the two surfaces of the stainless steel base layer; the two corrosion-resistant layers are respectively coated on the surfaces of the corresponding strengthening layers; the two wear-resistant layers are respectively coated on the surfaces of the corresponding corrosion-resistant layers, and the two impact-resistant layers are respectively overlapped on the surfaces of the corresponding wear-resistant layers. The corners of the stainless steel base layer are designed to be the round corners, the side faces of the stainless steel base layer are designed to be the arc-shaped faces protruding outwards, the design of the round corners and the arc-shaped faces enables the internal stress of the plate to be transited, and the influence of the internal stress on the plate is relieved as much as possible; and the unloading grooves unload part of internal stress, and due to the existence of the unloading grooves, the concentration condition of the internal stress of the plate is improved, so that the stainless steel product is not prone to deformation after being formed, and convenience is brought to shape design of the stainless steel product.

Description

Technical Field

[0001] The utility model relates to the technology in the field of stainless steel, in particular to a stainless steel plate with low internal stress. Background Art

[0002] According to the definition in GB / T20878-2007, stainless steel is a steel with the main characteristics of being stainless and corrosion-resistant, and the chromium content is at least 10.5%, and the maximum carbon content does not exceed 1.2%. Stainless steel is the abbreviation of stainless acid-resistant steel. Steels that are resistant to weak corrosive media such as air, steam, and water or have stainless properties are called stainless steels; while steels that are resistant to chemical corrosive media (chemical corrosion such as acids, alkalis, and salts) are called acid-resistant steels. Due to the differences in their chemical compositions, their corrosion resistances are different. Ordinary stainless steels are generally not resistant to chemical medium corrosion, while acid-resistant steels generally have stainless properties. The term "stainless steel" does not simply refer to a single type of stainless steel, but represents more than a hundred industrial stainless steels, and each developed stainless steel has good performance in its specific application field. The key to success is first to clarify the use, and then determine the correct steel type. There are usually only six types of steel related to the application field of building structures. They all contain 17-22% chromium, and better steel types also contain nickel. Adding molybdenum can further improve the atmospheric corrosion resistance, especially the corrosion resistance to chloride-containing atmospheres.

[0003] Due to so many advantages of stainless steel, it is widely used in industry. However, the stainless steel formed according to the current processing technology has low strength and large residual internal stress, and is prone to deformation, which brings inconvenience to the shape design of stainless steel products. Therefore, it is necessary to improve the existing stainless steel plates. Content of the Utility Model

[0004] In view of this, aiming at the deficiencies existing in the prior art, the main purpose of the utility model is to provide a stainless steel plate with low internal stress, which can effectively solve the problems that the existing stainless steel plate has large internal stress, is prone to deformation, and brings inconvenience to the shape design of stainless steel products.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A stainless steel plate with low internal stress includes a stainless steel base layer, two strengthening layers, two corrosion-resistant layers, two wear-resistant layers and two impact-resistant layers; unloading grooves are formed on the surface of the stainless steel base layer, the four corners of the stainless steel base layer are all rounded corners, and the side surfaces of the stainless steel base layer are all outwardly convex arc surfaces; the two strengthening layers are laminated on the two surfaces of the stainless steel base layer; the two corrosion-resistant layers are respectively coated on the surfaces of the corresponding strengthening layers; the two wear-resistant layers are respectively coated on the surfaces of the corresponding corrosion-resistant layers, and the two impact-resistant layers are respectively laminated on the surfaces of the corresponding wear-resistant layers.

[0007] As a preferred solution, the unloading grooves are multiple and extend laterally, and the multiple unloading grooves are arranged at intervals in the longitudinal direction.

[0008] As a preferred solution, the two strengthening layers are respectively formed on the two surfaces of the stainless steel base layer by shot peening, so that the metal surface is strengthened and a large residual compressive stress is generated, the internal stress of the plate is reduced, and the harm of stress concentration is reduced.

[0009] As a preferred solution, the two corrosion-resistant layers are both epoxy-phenolic paint layers.

[0010] As a preferred solution, the two wear-resistant layers are both made of PVDF.

[0011] As a preferred solution, the two impact-resistant layers are both made of glass fiber.

[0012] As a preferred solution, the unloading groove is an arc-shaped groove.

[0013] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0014] By designing the corners of the stainless steel base to be rounded, and the sides of the stainless steel base to be arc-shaped surfaces protruding outward, the design of the rounded corners and the arc-shaped surfaces allows the internal stress of the plate to be transitioned, thereby alleviating the influence of the internal stress on the plate as much as possible. In addition, a unloading groove is opened on the surface of the stainless steel base to relieve part of the internal stress. The presence of the unloading groove improves the concentration of internal stress of the plate, thereby making it less likely for the stainless steel product to be deformed after forming, thereby facilitating the shape design of the stainless steel product.

[0015] In order to more clearly illustrate the structural features and functions of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments: BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of a preferred embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional view of a preferred embodiment of the utility model.

[0018] Description of the accompanying drawings:

[0019] 10. Stainless steel base 11. Unloading chute

[0020] 20. Strengthening layer 30. Corrosion resistant layer

[0021] 40. Wear-resistant layer 50. Impact-resistant layer. DETAILED DESCRIPTION

[0022] Please refer toFigures 1 to 2 As shown, it shows the specific structure of the preferred embodiment of the present utility model, including a stainless steel base layer 10, two strengthening layers 20, two corrosion-resistant layers 30, two wear-resistant layers 40 and two impact-resistant layers 50.

[0023] Unloading grooves 11 are formed on the surface of the stainless steel base layer 10. The four corners of the stainless steel base layer 10 are all rounded corners, and the sides of the stainless steel base layer 10 are all outwardly convex arc surfaces; in this embodiment, the unloading grooves 11 are arc grooves; and the unloading grooves 11 are multiple and extend horizontally, and the multiple unloading grooves 11 are arranged longitudinally at intervals.

[0024] The two strengthening layers 20 are stacked on the two surfaces of the stainless steel base layer 10; in this embodiment, the two strengthening layers 20 are respectively formed on the two surfaces of the stainless steel base layer 10 by shot peening treatment, reducing the internal stress of the plate and reducing the harm of stress concentration.

[0025] The two corrosion-resistant layers 30 are respectively coated on the surfaces of the corresponding strengthening layers 20; in this embodiment, the two corrosion-resistant layers 30 are both epoxy-phenolic paint layers.

[0026] The two wear-resistant layers 40 are respectively coated on the surfaces of the corresponding corrosion-resistant layers 30; in this embodiment, the two wear-resistant layers 40 are both made of PVDF material.

[0027] The two impact-resistant layers 50 are respectively stacked on the surfaces of the corresponding wear-resistant layers 40; in this embodiment, the two impact-resistant layers 50 are both made of glass fiber material.

[0028] The manufacturing process of this embodiment is described in detail as follows:

[0029] First, select a stainless steel body and roll it to form the stainless steel base layer 10. The surface of the stainless steel is plastically strengthened and residual compressive stress is generated, thereby reducing the harmful effect of stress concentration. Then, unloading grooves are formed on the stainless steel base layer 10. Then, the stainless steel base layer 10 is subjected to shot peening treatment to form the strengthening layers 20 on the two surfaces of the stainless steel base layer 10. Finally, the corrosion-resistant layer 30 and the wear-resistant layer 40 are coated in sequence, and the impact-resistant layer 50 is stacked.

[0030] The design focus of the present utility model is that by designing the corners of the stainless steel base layer as rounded corners and the sides of the stainless steel base layer as outwardly convex arc surfaces, the internal stress of the plate is transitioned, and the influence of the internal stress on the plate is alleviated as much as possible. Coupled with the presence of unloading grooves on the surface of the stainless steel base layer, part of the internal stress is removed by the unloading grooves, and the existence of the unloading grooves improves the concentration of the internal stress of the plate, so that the stainless steel product is not easily deformed after being formed, which brings convenience to the shape design of the stainless steel product.

[0031] The above are only the preferred embodiments of the present utility model, and do not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A stainless steel sheet with low internal stress, characterized in that: It includes a stainless steel base layer, two strengthening layers, two corrosion-resistant layers, two wear-resistant layers and two impact-resistant layers; unloading grooves are formed on the surface of the stainless steel base layer, the four corners of the stainless steel base layer are all rounded corners, and the sides of the stainless steel base layer are all outwardly convex arc surfaces; the two strengthening layers are stacked on the two surfaces of the stainless steel base layer; the two corrosion-resistant layers are respectively coated on the surfaces of the corresponding strengthening layers; the two wear-resistant layers are respectively coated on the surfaces of the corresponding corrosion-resistant layers, and the two impact-resistant layers are respectively stacked on the surfaces of the corresponding wear-resistant layers.

2. The stainless steel sheet with low internal stress according to claim 1, wherein: The unloading grooves are multiple and extend horizontally, and the multiple unloading grooves are arranged longitudinally at intervals.

3. The stainless steel sheet with low internal stress according to claim 1, characterized in that: The two strengthening layers are respectively formed on the two surfaces of the stainless steel base layer by shot peening.

4. The stainless steel sheet with low internal stress according to claim 1, characterized in that: The two corrosion-resistant layers are both epoxy-phenolic paint layers.

5. The stainless steel sheet with low internal stress according to claim 1, characterized in that: The two wear-resistant layers are both made of PVDF material.

6. The stainless steel sheet with low internal stress according to claim 1, wherein: The two impact-resistant layers are both made of glass fiber material.

7. The stainless steel sheet with low internal stress according to claim 1, characterized in that: The unloading grooves are arc-shaped grooves.

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