High yield strength channel section and method of manufacture

Abstract

The present application provides a method of manufacturing high tensile strength channel steel, the method comprising the steps of: (i) mounting a coil of high strength steel material on a coil support device; (ii) feeding the coil into a leveller to obtain a flattened high strength steel strip; (iii) feeding the flattened high strength steel strip into a roll forming machine to process the strip to form channel steel; (iv) cutting the channel steel to custom lengths according to the specific requirements of the construction or structural application; thereby obtaining high tensile strength channel steel that can be used in construction and / or other applications.

Description

Technical Field

[0001] This invention relates to a high-strength channel steel, specifically to a high-strength channel steel for use in building structures, manufactured using high tensile strength steel. Background Technology

[0002] Channel steel is a versatile structural system that can be used in a wide range of construction and engineering projects. Some common uses of channel steel include: (i) supporting structures; (ii) mounting systems; (iii) construction; (iv) building components; (v) solar panel supports; and (vi) utilities and infrastructure.

[0003] (i) Support Structure: Channel steel is commonly used to construct support frames for pipes, cable conduits, cable trays, and HVAC systems, suitable for commercial and industrial buildings. This system offers flexibility, allowing for easy adjustment and customization of support configurations, facilitating layout adjustments and customization.

[0004] (ii) Installation system: Channel steel is used to install distribution boards, equipment racks, mechanical equipment and instruments, providing a stable support frame for fixing these devices to walls, ceilings or floors.

[0005] (iii) Building Construction: In building construction, channel steel is commonly used to build frames and support structures. As a multi-functional material, channel steel can be used to create custom structures such as platforms, walkways, stairs, and workbenches.

[0006] (iv) Building components: In building applications, channel steel can be used as a multi-functional component, suitable for custom lighting fixtures, display racks and various structural components used to support building elements such as lighting systems and signage.

[0007] (v) Solar panel brackets: Channel steel is widely used for the installation of solar panels and can be used to build mounting brackets for solar panels on rooftops or in open areas.

[0008] (vi) Utilities and infrastructure: Channel steel is used in utilities projects to manufacture supports and frames to support public equipment such as transformers, meters and outdoor cabinets.

[0009] Channel steel is typically formed by shaping steel or other metal materials to achieve the desired cross-sectional profile. Overall, channel steel combines flexibility and strength, making it a versatile option for various applications requiring structural support and adaptability. Its compatibility with a wide range of fittings and accessories enables innovative and efficient solutions in building and engineering projects.

[0010] In the current market, channel steel is mainly manufactured using galvanized steel, with yield strengths mostly between 235 and 440 N / mm². Channel steel with a yield strength reaching 550 N / mm² is relatively rare. Current manufacturing methods may use standard channel steel profiles to accommodate the DFMA process, but this may result in the use of heavier channel steel components, leading to excessive steel consumption. The limitations of existing channel steel manufacturing processes pose challenges in terms of lean manufacturing practices, environmental sustainability, and rising costs.

[0011] Other drawbacks of existing channel steel production processes include: larger channel steel dimensions, increased costs, and limitations in designing diverse channel steel structures.

[0012] U.S. Patent No. 4,947,607 discloses a support device for a suspended ceiling structure, comprising: a plurality of grid members suspended below an upper structure; and at least one compression support assembly disposed between the upper structure and one of the grid members. The compression support assembly includes an elongated tubular outer channel steel member having an inner surface; and an elongated inner channel steel member axially sleeved with the outer channel steel member, the first end of the inner channel steel member being disposed inside the outer channel steel member. The device further includes a locking member fixed to the first end of the inner channel steel member, the locking member engaging with the inner surface of the outer channel steel member, such that the compression support assembly extends axially and prevents it from contracting axially. The locking member includes a resilient disc spring clip, the edge of which is embedded in the inner surface of the outer channel steel member.

[0013] U.S. Patent No. 7,774,992 discloses a combination system of ceramic tiles and channel steel for constructing crustal dome structures. The ceramic tile is generally triangular, with its corners cut off to accommodate connection nodes for fixing the channel steel in place. The tile has a three-dimensional upper surface in a polyhedral shape, an integrally formed reinforcing rib structure, and grooves on the lower surface of its three sides.

[0014] US Patent No. 5,568,993 discloses a high-rigidity structure that connects to upper and lower support structures via six channel steels connected to three upper and three lower nodes. Each connecting component consists of hemispherical spheres mounted at both ends of each channel steel and held within cylindrical through-holes, such that the centerlines of the channel steels intersect at the nodes. This structural design eliminates bending loads on the channel steels while significantly simplifying the design and construction of the overall structure.

[0015] Traditionally, channel steel is typically made from metal tubing, such as structural steel tubing with a predetermined diameter, and constructed to withstand predetermined compressive stress. The conventional manufacturing method for channel steel is roll forming. Summary of the Invention

[0016] On one hand, the present invention relates to a method for manufacturing channel steel with a yield strength of 700 to 800 N / mm² and a tensile strength of 900 to 980 N / mm², wherein high-strength steel is used, which has significant advantages over low-carbon steel.

[0017] The main objective of this invention is to provide a method for manufacturing high tensile strength channel steel, which includes the following steps: (i) Installing a coil made of high-strength steel onto a coil support device; (ii) The coil is fed into a leveling device to obtain a flat high-strength steel strip; (iii) The flat high-strength steel strip is fed into a roll forming machine for processing to form a channel steel; (iv) Cut the channel steel to a custom length according to the specific requirements of the construction or structural application; This results in high tensile strength channel steel that can be used in construction and / or other applications.

[0018] Another object of the present invention is to provide a channel steel comprising an elongated body made of high-strength tensile steel, the body having a generally U-shaped hollow central section and two connected side sections perpendicular to the central section and extending inward from the outer end of the body into the elongated body, thereby forming a U-shaped channel structure.

[0019] Another object of the present invention is to provide a method for manufacturing a high tensile strength channel steel, wherein the high strength steel material has a yield strength range of 700 to 800 N / mm² and a tensile strength range of 900 to 980 N / mm², and the channel steel has a yield strength range of 700 to 800 N / mm² and a tensile strength range of 900 to 980 N / mm².

[0020] Another object of the present invention is to provide a method for manufacturing high tensile strength channel steel, which includes surface treatment of the channel steel to achieve corrosion protection and / or improve appearance.

[0021] Another object of the present invention is to provide a method for manufacturing high tensile strength channel steel, wherein the strength-to-weight ratio of the high tensile strength channel steel can reduce steel consumption and its weight, thereby facilitating lean manufacturing and environmentally sustainable processes.

[0022] Another object of the present invention is to provide a method for manufacturing high tensile strength channel steel, wherein the step of feeding the flat high-strength steel strip into a roll forming machine provides flexibility for forming different channel steel cross-sectional shapes according to specific needs and applications.

[0023] Another object of the present invention is to provide a method for manufacturing high tensile strength channel steel, wherein the obtained high tensile strength channel steel has a reduced footprint.

[0024] Another object of the present invention is to provide a channel steel having a structure comprising a hollow central base section and two side flanges, the two side flanges being connected to form an elongated, U-shaped structure, wherein the two sides of the channel steel are designed for use in inserting fasteners, fittings and accessories during installation.

[0025] Another object of the present invention is to provide a channel steel made of high-strength steel material, wherein the yield strength of the steel material is in the range of 700 to 800 N / mm² and the tensile strength is in the range of 900 to 980 N / mm², and the channel steel itself has a yield strength in the range of 700 to 800 N / mm² and a tensile strength in the range of 900 to 980 N / mm².

[0026] The above and other features, aspects and advantages of the present invention can be more readily understood by taking into account the following drawings, description and claims. Attached Figure Description

[0027] The detailed description of the above-described invention and preferred embodiments, combined with the accompanying drawings, will make the present invention easier to understand. The accompanying drawings illustrate the currently preferred embodiments of the invention and are schematic diagrams. However, it should be understood that the present invention is not limited to the specific structures and components shown.

[0028] Figure 1 This is a flowchart of the channel steel manufacturing process provided by the present invention.

[0029] Figure 2 This is a cross-sectional view of the U-shaped channel steel provided by the present invention. The dimensions of the channel steel shown in the figure have been reduced and are for illustrative purposes only.

[0030] Figure 3 This is a perspective view of a channel steel according to a preferred embodiment of the present invention. The dimensions of the channel steel shown in the figure have been reduced and are for illustrative purposes only.

[0031] Figure 4 This is another preferred embodiment provided by the present invention. The dimensions of the channel steel shown in the figure have been reduced and are only for illustrative purposes. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings, wherein the same numerals denote the same elements. Figures 1 to 4A method for manufacturing a channel steel (10) of the present invention is shown, the channel steel having an elongated body made of high-strength tensile steel, the body comprising a generally U-shaped hollow central base section (20) and two connected side sections (22), the side sections being perpendicular to the central base section (20) and extending inward from the outer end of the body into the interior of the elongated body, thereby forming the channel steel (10).

[0033] A preferred embodiment of the present invention discloses a method for manufacturing high tensile strength channel steel, the method comprising the following steps: (i) Installing a coil made of high-strength steel onto a coil support device; (ii) The coil is fed into a leveling device to obtain a flat high-strength steel strip; (iii) The flat high-strength steel strip is fed into a roll forming machine for processing to form a channel steel; (iv) Cut the channel steel to a custom length according to the specific requirements of the construction or structural application; This results in high tensile strength channel steel that can be used in construction and / or other applications.

[0034] This invention uses high-strength steel to manufacture channel steel, which has an excellent strength-to-weight ratio, helping to reduce weight, thereby reducing steel consumption and production costs, and facilitating the implementation of lean manufacturing and environmentally sustainable processes.

[0035] Figure 1 A flowchart illustrating the manufacturing process of the high tensile strength channel steel provided by this invention.

[0036] In step (i), a coil of high-strength steel is prepared and placed on a coil support device to begin manufacturing U-shaped channel steel; in step (ii), the coil is fed into a leveling device to obtain a flat high-strength steel strip; in step (iii), the high-strength steel strip is fed into a roll forming machine for processing to form channel steel; in step (iv), the channel steel is cut to a custom length according to the specific requirements of the construction or structural application.

[0037] The unique feature of this manufacturing method is the introduction of high-strength steel with a yield strength of 700 to 800 N / mm² and a tensile strength of 900 to 980 N / mm², which can significantly reduce steel consumption during the manufacturing of channel steel.

[0038] The roller forming machine is used for bending steel and is an automatic high-speed flying shear roller forming machine.

[0039] Figure 2This is a cross-sectional view of the channel steel provided by the present invention. In a preferred example, the 41×41 mm channel steel can be reduced to a size of 41×21 mm, and its unfolded profile width is reduced from 137.1 mm to 111.2 mm, thereby reducing steel consumption by approximately 18.9%.

[0040] Figure 3 and Figure 4 A schematic perspective view of the channel steel provided by the present invention.

[0041] Compared to traditional cold-rolled steel, high-strength steel offers a superior strength-to-weight ratio. Similar to other advanced high-strength steels, it is a cost-effective alternative to metals or plastics, providing numerous weight-reduction possibilities in channel steel manufacturing. Unlike the ordinary steel used in traditional roll forming methods, this invention aims to utilize high-yield-strength steel with a yield strength of 700 to 800 MPa for channel steel manufacturing. By utilizing this high-strength steel, roll forming machines are more suitable for the channel steel forming process.

[0042] According to a preferred embodiment of the invention, the channel steel (10) comprises an elongated body made of high tensile strength steel, the body having a generally U-shaped hollow central base section (20) and two connected side sections (22) perpendicular to the central base section (20) and extending inward from the outer end of the body into the interior of the body, thereby forming the U-shaped channel steel (10). The two side sections (22) of the channel steel are designed to provide locations for accommodating fasteners, fittings, and accessories during installation. The yield strength of the channel steel (10) ranges from 700 to 800 N / mm², and the tensile strength ranges from 900 to 980 N / mm². Before the channel steel (10) is packaged for transport or applied to the construction site, it is surface-treated by finishing equipment to prevent corrosion and / or improve its appearance.

[0043] Those skilled in the art will understand that various modifications and variations can be made to the above embodiments without departing from the overall concept of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed, but is intended to cover all equivalent alternatives within the spirit and scope of the claims.

Claims

1. A method for manufacturing high tensile strength channel steel, characterized in that, The method includes the following steps: (i) Installing a coil made of high-strength steel onto a coil support device; (ii) The coil is fed into a leveling device to obtain a flat high-strength steel strip; (iii) The flat high-strength steel strip is fed into a roll forming machine for processing to form a channel steel; (iv) Cut the channel steel to a custom length according to the specific requirements of the construction or structural application; This results in high tensile strength channel steel that can be used in construction and / or other applications.

2. The method for manufacturing high tensile strength channel steel according to claim 1, wherein the yield strength of the high strength steel material is in the range of 700 to 800 N / mm², and the tensile strength is in the range of 900 to 980 N / mm².

3. The method for manufacturing high tensile strength channel steel according to claim 2, wherein the yield strength of the channel steel is in the range of 700 to 800 N / mm², and the tensile strength is in the range of 900 to 980 N / mm².

4. The method for manufacturing high tensile strength channel steel according to claim 1, characterized in that, It also includes step (vi): surface treatment of the channel steel to prevent corrosion and / or improve its appearance.

5. The method for manufacturing high tensile strength channel steel according to claim 4, wherein the yield strength of the channel steel is in the range of 700 to 800 N / mm², and the tensile strength is in the range of 900 to 980 N / mm².

6. The method for manufacturing high tensile strength channel steel according to claim 1, wherein the strength-to-weight ratio of the high tensile strength channel steel can reduce the consumption of steel.

7. The method for manufacturing high tensile strength channel steel according to claim 1, wherein the high tensile strength channel steel can reduce its weight, thereby facilitating lean manufacturing and environmentally sustainable processes.

8. The method for manufacturing high tensile strength channel steel according to claim 1, wherein the step of feeding the flat high-strength steel strip into a roll forming machine provides flexibility for forming different channel steel cross-sectional shapes according to specific needs and applications.

9. The method for manufacturing high tensile strength channel steel according to claim 1, wherein the obtained high tensile strength channel steel has a smaller volume.

10. The method for manufacturing high tensile strength channel steel according to claim 1, wherein the roll forming machine can be used to manufacture U-shaped high tensile strength channel steel.

11. A channel steel, characterized in that, The material comprises an elongated body made of high-strength tensile steel, the body having a generally U-shaped hollow central base section and two connected side sections perpendicular to the central base section and extending inward from the outer end of the body into the elongated body, thereby forming the U-shaped channel steel.

12. The channel steel of claim 11, wherein the side sections of the channel steel are used to provide locations for accommodating fittings, fasteners and accessories during installation.

13. The channel steel according to claim 11, wherein the yield strength of the channel steel is in the range of 700 to 800 N / mm², and the tensile strength is in the range of 900 to 980 N / mm².

14. The channel steel of claim 11, wherein the surface of the channel steel is treated to prevent corrosion and / or improve appearance.

15. The channel steel according to claim 14, wherein the channel steel is treated by finishing equipment before being packaged, transported, or applied to the construction site.

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