Hot-rolled integrally formed inner expanding type anchor cavity steel sheet and method of manufacturing the same

Abstract

The application discloses a hot-rolled integrally-formed inner-expanding type anchoring cavity steel plate and a manufacturing method thereof, and belongs to the technical field of steel plate manufacturing. The steel plate comprises a steel plate body and an inner-expanding type anchoring cavity integrally formed on the surface of the steel plate body by hot rolling, the anchoring cavity is one or a combination of multiple of a transverse groove type, a longitudinal groove type and a dot-shaped pit type, and does not cut through the steel plate body, so that the steel plate is kept complete. The manufacturing method utilizes the plastic flow effect of a steel blank under a hot state, and forms an inner-expanding cavity structure with a small opening and a large interior through special die pressing, so that reliable mechanical interlocking can be formed between the steel plate and various materials such as concrete without welding. The application has the advantages of no welding hidden danger, high connection strength, good structural integrity, excellent anti-seepage performance, high construction efficiency, strong durability and industrialized production, and is suitable for various multi-material combined structure engineering.

Description

Technical Field

[0001] This invention belongs to the field of steel plate manufacturing technology, specifically relating to a hot-rolled, integrally formed steel plate with an internally expanded anchoring cavity and its manufacturing method. Background Technology

[0002] Traditional steel plate bonding structures with other materials or concrete typically use welded shear studs, studs, or other fasteners to connect the steel plate to the concrete layer, or directly weld materials different from the steel plate. This approach suffers from problems such as welding fatigue, cracking, easy detachment, and low construction efficiency. While some existing technologies have attempted to replace welded components with anchoring structures, such as drilling holes in the steel plate, this approach compromises the integrity of the steel plate, resulting in the loss of its original strength, impermeability, and other core properties. The connection effect is poor, and the performance of the steel plate itself cannot be guaranteed. Furthermore, anchoring structures suffer from complex processes and difficulties in large-scale industrial production. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a hot-rolled, integrally formed steel plate with an internally expanded anchoring cavity and its manufacturing method. While ensuring the integrity of the steel plate body and retaining all its inherent characteristics and advantages, reliable mechanical interlocking with different materials such as concrete is achieved by integrally forming transverse and longitudinal grooved anchoring cavities and dotted pit anchoring cavities on the steel plate body. This eliminates the need for welded connectors, prevents leakage, and balances the steel plate's own strength, impermeability, and other properties with the need for tight connection with dissimilar materials, thereby improving structural integrity, durability, and construction efficiency. The steel plate of this invention includes a steel plate body and an internally expanded anchoring cavity integrally formed on its surface. The anchoring cavity can be a transverse grooved anchoring cavity, a longitudinal grooved anchoring cavity, a dotted pit anchoring cavity, or a combination thereof, integrally rolled from the same steel billet during the hot forming stage. The anchoring cavity extends to a certain depth inside the steel billet without penetrating the steel plate body, ensuring the integrity of the steel plate body. Beneficial Effects: 1. No Welding Risks: Eliminates the need for welded connectors such as shear studs and bolts, eliminating welding fatigue and detachment risks, and solving connection problems such as inability to weld different materials or easy cracking after welding. 2. Reliable Connection: The internally expanded anchoring cavity, including but not limited to transverse groove type, longitudinal groove type, and dot-shaped pit type anchoring cavities, forms a mechanical interlock with different materials such as concrete, non-ferrous metals, wood, and plastics, resulting in excellent interlayer shear and pull-out resistance. 3. Preserves the Inherent Properties of the Steel Plate: The non-penetrating design of the anchoring cavity ensures the integrity of the steel plate itself, fully preserving all the original strength, impermeability, and other characteristics and advantages of the steel plate. The side of the steel plate without the anchoring cavity can fully maintain the original performance of the steel plate, eliminating leakage problems and ensuring the structural performance of the steel plate itself, such as compressive strength and deformation resistance. 4. High Durability: Hot-rolled integral molding, good structural integrity, and long service life. 5. Efficient Construction: No on-site welding required, fast assembly and construction, adaptable to the rapid construction of multi-material combination structures.

[0004] Attached image description: Figure 1 This is an overall schematic diagram of the hot-rolled, one-piece formed, internally expanded anchoring cavity steel plate described in this invention. Figure 1 The upper part is a top view, showing the planar layout of the steel plate body and anchoring cavities. Specifically: the light gray area represents the steel plate body; the upper dark area represents the longitudinally grooved anchoring cavities, distributed in continuous strips; the middle dark area represents the transversely grooved anchoring cavities, also distributed in continuous strips; and the lower dark circular area represents the dotted, pitted anchoring cavities, distributed in an array. All anchoring cavities are integrally formed with the steel plate body during the hot forming stage and do not penetrate the steel plate body, allowing for mechanical interlocking connections with various materials. Figure 1 The lower half is a cross-sectional view, illustrating the internal structure of the expanded anchoring cavity after rolling. The light gray area represents the steel plate itself; the dark area represents the expanded anchoring cavity, which has a small opening and a large internal space, resembling an inverted trapezoid or cone shape. This effectively enhances the interlocking effect with various materials, and the anchoring cavity does not penetrate the steel plate itself, ensuring the integrity of the steel plate. This structure eliminates traditional welded connectors, achieving reliable connection between dissimilar materials while retaining all the inherent properties of the steel plate, thus improving the overall integrity and durability of the multi-material composite structure.

Claims

1. A method for manufacturing a hot-rolled, one-piece, internally expanded anchoring cavity steel plate, characterized in that, Includes the following steps: Select a steel billet of appropriate thickness and adjust it to the hot pressing temperature range; use a special mold to make an opening groove on the surface of the steel billet, the groove is opened to a certain depth inside the steel billet but does not cut through the steel billet body, and the plastic rheological effect of the steel billet under hot state is used to form an inwardly expanding cavity structure with a larger bottom and a smaller top; after cooling, the finished steel plate is obtained.

2. The manufacturing method according to claim 1, characterized in that, The internally expanded cavity structure includes, but is not limited to, one or more combinations of transverse groove anchoring cavities, longitudinal groove anchoring cavities, and dotted pit anchoring cavities.

3. The manufacturing method according to claim 1, characterized in that, During the pressing process, the lower half of the billet undergoes smaller deformation due to solid support, while the upper half, which has no support, undergoes larger deformation, thus forming an inwardly expanding structure with a small opening and a large internal space.

4. A hot-rolled, one-piece formed steel plate with an internally expanded anchoring cavity, characterized in that, The steel plate body includes an internally expanded anchoring cavity formed integrally by hot rolling on its surface; the anchoring cavity is one or more combinations of transverse groove, longitudinal groove, and dot-shaped pit; the anchoring cavity does not penetrate the steel plate body and is integrally formed by hot rolling from the same steel billet as the steel plate body.

5. The steel plate according to claim 4, characterized in that, The internally expanded anchoring cavity is an inverted trapezoidal or conical structure that is larger at the bottom and smaller at the top, and can form a mechanically interlocked connection with materials such as concrete, non-ferrous metals, wood, and plastics.

6. The steel plate according to claim 4, characterized in that, The steel plate body is a continuous and complete structure without perforations or welds, maintaining its original strength, impermeability, and resistance to pressure and deformation.

Images