CN-224229719-U - Fracture-preventing high-strength hot-rolled spring flat steel

Abstract

The utility model discloses a fracture-resistant high-strength hot-rolled spring flat steel, which belongs to the technical field of hot-rolled spring flat steel and comprises a flat steel body, wherein the outer side of the flat steel body is respectively provided with first glass fibers and second glass fibers, the inside of the flat steel body is provided with a cavity, the inside of the cavity is respectively provided with first reinforcing ribs and second reinforcing ribs at equal intervals, the inside of the flat steel body is connected with buffer cylinders at equal intervals, and the outer surface of the flat steel body is coated with a protective layer. The fracture-resistant high-strength hot-rolled spring flat steel has the advantages that stress can be dispersed, crack propagation can be prevented through the grid structure formed by the first glass fiber and the second glass fiber, the bending resistance and torsion resistance of the flat steel body can be improved by matching with the first reinforcing rib and the second reinforcing rib, and meanwhile, impact energy can be absorbed by utilizing the buffer cylinder, so that the fracture resistance, fatigue resistance and earthquake resistance of the flat steel body can be enhanced by utilizing the multi-structure synergistic effect.

Inventors

• HU PEIRONG
• WEI JUNQIN
• TANG ZHIFEI

Assignees

• 江苏巴马型钢有限公司

Dates

Publication Date

20260512

Application Date

20250616

Claims (6)

1. 1. The anti-fracture high-strength hot rolled spring flat steel is characterized by further comprising a cavity which is formed in the flat steel body (1), a first reinforcing rib (4) and a second reinforcing rib (5) are respectively arranged in the cavity at equal intervals, a buffer cylinder (6) is connected in the flat steel body (1) at equal intervals, a protective layer (7) is coated on the outer surface of the flat steel body (1), an anti-corrosion layer (8) is coated on one side, far away from the flat steel body (1), of the protective layer (7), and a wear-resistant layer (9) is coated on one side, far away from the protective layer (7), of the anti-corrosion layer (8).
2. 2. The breakage-proof high-strength hot rolled spring flat steel according to claim 1, wherein the first glass fibers (2) and the second glass fibers (3) are distributed on the outer side of the flat steel body (1) in an equidistant and staggered mode, the first glass fibers (2) and the second glass fibers (3) form a grid structure, and the first glass fibers (2) and the second glass fibers (3) are bonded on the outer side of the flat steel body (1) through an adhesive.
3. 3. A fracture-resistant high-strength hot-rolled spring flat steel according to claim 1, wherein a plurality of the first reinforcing ribs (4) and the second reinforcing ribs (5) are vertically staggered in a grid shape in the cavity, the first reinforcing ribs (4) and the second reinforcing ribs (5) are made of high-strength alloy steel materials, and the first reinforcing ribs (4) and the second reinforcing ribs (5) are welded and fixed in the cavity of the flat steel body (1).
4. 4. A fracture-resistant high-strength hot-rolled flat spring steel according to claim 1, wherein a plurality of the second reinforcing ribs (5) are arranged in grid cells formed by the first reinforcing ribs (4) and the second reinforcing ribs (5), and the second reinforcing ribs (5) are made of spring steel materials.
5. 5. The fracture-resistant high-strength hot rolled spring flat steel according to claim 1, wherein the protective layer (7) is made of a phosphating film material, so that the corrosion resistance and the coating adhesion of the flat steel body (1) can be improved, and the anti-corrosion layer (8) is made of an epoxy zinc-rich coating material.
6. 6. The breakage-proof high-strength hot rolled spring flat steel as claimed in claim 1, wherein the wear-resistant layer (9) is made of an electroless nickel phosphorus alloy material, so that the wear resistance of the flat steel body (1) can be remarkably improved.

Description

Fracture-preventing high-strength hot-rolled spring flat steel Technical Field The utility model relates to the technical field of steel, in particular to fracture-resistant high-strength hot rolled spring flat steel. Background The hot-rolled flat spring steel is a steel material with specific cross-sectional shape and performance requirements and is mainly used for manufacturing elastic elements such as springs and the like; the steel is a flat steel produced by a hot rolling process, is widely applied to the fields of suspension systems of vehicles such as automobiles, motorcycles, tractors and the like, damping parts in industrial equipment, elastic elements of various machines and the like, and is an important engineering material; in order to solve the defects, the prior art (Chinese patent with the application number of 202320981505.5 and the authorized publication date of 2023-11-07) discloses high-strength hot rolled spring flat steel, a flat steel body, first glass fibers and second glass fibers are arranged, anti-fracture mechanisms formed by combining the first glass fibers and the second glass fibers are fixed on the upper side and the lower side of the inside of the flat steel body, the first glass fibers and the second glass fibers are combined to form a net structure, the strength of the flat steel can be increased, breakage is avoided, the flat steel body, the first reinforcing ribs and the second reinforcing ribs are arranged at equal intervals on the middle of the flat steel body, the anti-deformation mechanisms formed by combining the first reinforcing ribs and the second reinforcing ribs are distributed in the first reinforcing ribs at equal intervals, the deformation is effectively avoided, the flat steel body, the high-low temperature polytetrafluoroethylene film and the PE film are arranged on the upper side and the lower side of the flat steel body, the high-low temperature polytetrafluoroethylene film is arranged on the two sides of the high-low temperature polytetrafluoroethylene film, and the high-corrosion resistance PE is prolonged, and the service life is prolonged. The prior art is through the fracture prevention mechanism that first glass fiber and second glass fiber combination constitute, can increase the intensity of band steel, avoid the fracture, but hot rolling spring band steel is more flexible excessively when bearing bending load, the ability of the great external force of spring load-bearing has been restricted, it is unsuitable for high bearing requirement scene, in the hot rolling spring band steel once appear the crackle simultaneously, will expand fast, reduce band steel toughness, make it easily become invalid because of fatigue crack under cyclic load, therefore we just propose the high strength hot rolling spring band steel that prevents the fracture can be fine solution above problem. Disclosure of utility model The utility model aims to provide a fracture-resistant high-strength hot-rolled spring flat steel, which solves the problems that the hot-rolled spring flat steel provided by the background art is easier to excessively bend when bearing bending load, limits the capability of bearing larger external force of a spring, is not suitable for a high-bearing requirement scene, and can be rapidly expanded once cracks appear in the hot-rolled spring flat steel, and reduces the toughness of the flat steel so that the flat steel is easy to fail due to fatigue cracks under cyclic load. The high-strength hot-rolled spring flat steel comprises a flat steel body, wherein the outer side of the flat steel body is provided with first glass fibers and second glass fibers respectively, a cavity is formed in the flat steel body, first reinforcing ribs and second reinforcing ribs are arranged in the cavity at equal intervals, buffer cylinders are connected in the flat steel body at equal intervals, the outer surface of the flat steel body is coated with a protective layer, one side of the protective layer, far away from the flat steel body, is coated with an anti-corrosion layer, and one side of the anti-corrosion layer, far away from the protective layer, is coated with a wear-resistant layer. Preferably, the first glass fibers and the second glass fibers are distributed on the outer side of the flat steel body in an equidistant and staggered mode, the first glass fibers and the second glass fibers form a grid structure, and the first glass fibers and the second glass fibers are bonded on the outer side of the flat steel body through an adhesive. Preferably, a plurality of first strengthening ribs and second strengthening ribs are vertically staggered in the cavity to form a grid shape, the first strengthening ribs and the second strengthening ribs are made of high-strength alloy steel materials, and the first strengthening ribs and the second strengthening ribs are welded and fixed in the cavity of the flat steel body. Preferably, the plurality of second reinforcing ri