Manufacturing system and method for producing a metal strip with openings, and metal strip

Abstract

The invention relates to a manufacturing method (30) for producing a metal strip (10) with openings, comprising at least one slitting device (32) for introducing slits into the metal strip (10), at least one stretching device (34) for widening the slits introduced into the metal strip (10) into openings (20, 24), and at least one shaping device (36) and / or at least one heat input device (38) for changing at least one material property. Furthermore, the invention relates to a method for producing a metal strip (10) with openings (20, 24) using the manufacturing system (30), and to a metal strip (10) with openings (20, 24) manufactured using the manufacturing system (30) and / or the method.

Description

Technical Field

[0001] This invention relates to a manufacturing method for producing metal strips with openings, the system comprising at least one roll-cutting device for introducing a slit into the metal strip and at least one stretching device for widening the slit introduced into the metal strip into an opening. Furthermore, this invention relates to a method for producing metal strips with openings using this manufacturing system, and metal strips with openings manufactured using this manufacturing system and / or this method. Background Technology

[0002] The metal strips mentioned above can be used, for example, to reinforce molded bodies made of injectable compounds, such as sealing rings made of elastic materials. Furthermore, such metal strips can also be used as filters, screens, or grids.

[0003] To create openings, a known method is to use rotary cutting to cut slits in a metal strip during a continuous manufacturing process, and then expand these slits into openings by stretching.

[0004] To achieve lower tolerances in the mechanical and dimensional properties of metal strip, cold-rolled strip is typically used as the raw material. The production process of cold-rolled strip involves first using hot-rolled strip, then subjecting it to multiple cold rolling processes, with annealing treatment between each process. If certain performance requirements of the metal, such as thickness tolerances, minimum or maximum tensile strength, and / or minimum or maximum elongation, are disregarded, the number of process steps can be reduced. Summary of the Invention

[0005] The object of this invention is to create a manufacturing system, method, and metal strip that enables the use of raw materials with high mechanical and geometric tolerances and low degree of processing.

[0006] To achieve this objective, the present invention provides a manufacturing system having the features of claim 1, a method having the features of claim 8, and a metal strip having the features of claim 10.

[0007] Advantageous embodiments of the manufacturing system, method, and metal strip are the subject of the corresponding dependent claims.

[0008] According to a first aspect of the invention, a manufacturing system for producing a metal strip with an opening is provided. The manufacturing system includes at least one roll-cutting device for introducing a slit into the metal strip, at least one stretching device for expanding the slit introduced into the metal strip into an opening, and at least one forming device and / or at least one heat input device for changing at least one material property of the metal strip.

[0009] By integrating additional process steps—achieved by providing at least one forming device and / or at least one heat input device—the effects of reduced tolerances in raw or starting materials can be eliminated during rotary cutting, or the tolerances of raw or starting materials can be reduced. Therefore, metal strips with low processing degrees and high geometric and / or mechanical tolerances can be used as raw or starting materials to produce metal strips. This manufacturing system can complete the processing of low-processing, high-tolerance raw or starting materials in a single step during roll cutting. This avoids additional transport distances, such as those incurred when processing hot-rolled strip into cold-rolled strip, thereby saving handling and processing energy consumption. Therefore, metal strips produced using the manufacturing system of this invention have a better carbon balance. Furthermore, this manufacturing system allows for individual adjustment of the material properties of the metal strip.

[0010] In a preferred embodiment, the raw material or starting material is a metal, particularly steel, aluminum, or copper. Preferably, the starting material or raw material is a so-called narrow roll, with a width between 20 mm and 120 mm, particularly between 25 mm and 62 mm. The narrow roll can be produced by slitting hot-rolled strip.

[0011] Preferably, the opening is formed by an edge opening introduced into the edge portion of the metal strip substrate and an internal opening introduced into the interior portion of the substrate.

[0012] In a preferred embodiment, the tensile strength, elongation at break, and / or yield strength of the metal strip can be adjusted by a forming device and / or a heat input device. This allows the material properties of the metal strip to be adjusted individually by the forming device and / or the heat input device. For example, the tensile strength of the metal strip can be adjusted by the forming device, while the elongation of the metal strip can be adjusted by the heat input device.

[0013] In a preferred embodiment, the order of the devices is variable. By changing the order of the devices, the tolerances of the raw materials can be precisely reduced, thereby enabling customized adjustments to the properties of the metal strip. For example, the forming device and the heat input device can be arranged before or after the roll cutting device and / or the stretching device. Alternatively, the forming device or the heat input device can be arranged before or after the roll cutting device and / or after the stretching device. Or, the forming device can be arranged before the roll cutting device, while the heat input device can be arranged after the stretching device.

[0014] In a preferred embodiment, the number of devices is variable. Therefore, the manufacturing system may include multiple forming devices and / or multiple heat input devices. For example, multiple forming devices may be connected in series to form raw materials or starting materials in multiple stages, thereby adjusting their tensile strength.

[0015] In a preferred embodiment, the forming apparatus is configured as a rolling apparatus and / or a straightening apparatus. The straightening apparatus may include multiple rollers on which the metal strip is bent and straightened, thereby increasing the elongation of the metal strip. The rolling apparatus is preferably a cold rolling apparatus. The cold rolling apparatus rolls the metal strip, thereby changing its tensile strength. Alternatively, the rolling apparatus may also be configured as a hot rolling apparatus.

[0016] In a preferred embodiment, the heat input device is configured as an annealing device. This annealing device heats and then cools the metal strip, thereby adjusting the mechanical properties of the metal strip. Specifically, the annealing device can be used to change the elongation of the metal strip.

[0017] In a preferred embodiment, the stretching device is configured as a roller stretching device. This roller stretching device is used to widen the slits on the metal strip into an opening. The width of the opening can be changed by adjusting the degree of roller pressure.

[0018] According to another aspect of the invention, a method for producing a metal strip with an opening using the manufacturing system of the invention is provided. In this method, a metal strip is first provided. A slit is introduced into the metal strip using a roll cutting device, and then the slit-stripped metal strip is stretched using a stretching device to enlarge the slit into an opening. Before introducing the slit and / or after stretching, the metal strip is shaped using at least one forming device and / or heat-treated using at least one heating device.

[0019] By shaping and / or heat-treating the metal strip, roll cutting and adjustment of the strip's mechanical properties can be completed in a single process flow. This allows for the use of metal strips with low machining depth and high tolerances as raw materials or starting materials.

[0020] In a preferred embodiment, the metal strip is a continuous strip.

[0021] In a preferred embodiment, the metal strip is rolled or straightened by a forming device and / or annealed by a heat input device.

[0022] According to another aspect of the invention, a metal strip with an opening is provided, which is manufactured using a manufacturing system according to the invention and / or a method according to the invention.

[0023] In a preferred embodiment, the starting material used for the metal strip is hot-rolled strip. Attached Figure Description

[0024] The following description, based on exemplary embodiments shown in the accompanying drawings, will describe in more detail the metal strip, the manufacturing system, the method for producing a metal strip with openings, and other features and advantages. The figures illustrate: Figure 1 Top view of the metal strip; and Figure 2 For production Figure 1 A schematic diagram of the manufacturing system for the metal strip shown. Detailed Implementation

[0025] Figure 1 A metal strip 10 is shown, which can be used, for example, to reinforce molded bodies (not shown), such as gaskets, or as filters, sieves, or grids.

[0026] The metal strip 10 has a strip-shaped base 12 formed by a first edge portion 14a and a second edge portion 14b, and an inner portion 16 disposed therebetween.

[0027] Both edge portions 14a and 14b include multiple thin sheets 18, which are separated by edge openings 20. The edge openings 20 extend inward from the edge 22 of the substrate 12 in the longitudinal direction L, and the two edge openings 20 are always opposite each other. The edge openings 20 are wedge-shaped inward.

[0028] Internal openings 24 are formed in the internal portion 16, each of which gradually decreases in size towards both sides. For example... Figure 1 As shown, in the longitudinal direction L of the metal strip 10, the internal openings 24 are alternately arranged between two edge openings 20, and two opposing internal openings 24 are also arranged between each pair of adjacent edge openings 20.

[0029] Figure 1 The metal strip 10 shown, especially the edge opening 20 and the inner opening 24, is used Figure 2 It was manufactured by the manufacturing system 30 shown.

[0030] The manufacturing system 30 has at least one roll cutting device 32 for introducing a slit into the metal strip 10; at least one stretching device 34 for widening the slit introduced into the metal strip 10 into openings 20, 24; at least one forming device 36 for forming the metal strip 10; and at least one heat input device 38 for heat treating the metal strip 10.

[0031] The roll cutting device 32 introduces a slit into the metal strip 10. For this purpose, the roll cutting device 32 may include a rotating cutting wheel that introduces the slit into the metal strip 10.

[0032] The stretching device 34 stretches the metal strip 10 along the longitudinal direction L. This widens the slit into openings 20, 24. The stretching device 34 can be configured as a roller stretching device.

[0033] The forming device 36 reshapes the metal strip to alter its mechanical and / or geometric properties. Using the forming device 36, the tensile strength and / or elongation of the metal strip 10 can be changed. The forming device 36 can be configured as a rolling device and / or a straightening device.

[0034] The heat input device 38 is used to heat treat the metal strip 10 to change its mechanical and / or geometric properties. The elongation of the metal strip 10 can be changed using the heat input device 38. The heat input device 38 can be configured as an annealing device for annealing the metal strip 10.

[0035] The order of devices 32, 34, 36, and 38 is variable. In this embodiment, the forming device 36 and the heat input device 38 are arranged before the roll cutting device. Alternatively, the heat input device 38 may be arranged after the stretching device 34 or before the forming device 36. Furthermore, the number of devices 32, 34, 36, and 38 is also variable. For example, multiple forming devices 36 may be arranged in series within the manufacturing system 30 to form the metal strip in multiple stages, thereby improving its tensile strength and / or elongation.

[0036] The following describes a possible method for producing metal strip 10 using manufacturing system 30. For example... Figure 2 As shown, a starting material 40 in the form of a coil is first provided. The starting material 40 is a hot-rolled strip in the form of a narrow coil, with a width between 20 mm and 120 mm, particularly between 25 mm and 62 mm. The starting material 40 is fed into the manufacturing system 30 and formed in the forming device 36, specifically, cold-rolled, to increase the tensile strength of the metal strip 10. After leaving the forming device 36, the metal strip 10 is fed into a heat treatment device 38 for annealing to increase the elongation of the metal strip 10. Subsequently, the metal strip 10 is fed into a roll cutting device 32, where a slit is opened in the metal strip 10. The metal strip is then fed into a stretching device 34, where the slit is expanded into openings 20, 24 by roll stretching. After roll stretching, the metal strip 10 with openings 20, 24 is rewound into a coil 42.

[0037] Using at least one forming device 36 and / or at least one heat input device 38, a material 40 with low processing degree and high tolerance can be used as the starting material for the metal strip 10. The mechanical and / or geometric properties of the metal strip 10 can be precisely adjusted by the forming device 36 and / or the heat input device 38, thereby eliminating the influence of the high tolerance of the starting material 40. Therefore, cost-effective hot-rolled strip can be used as the starting material for the roll cutting process. The forming and heat treatment process steps can reduce the high tolerance of the hot-rolled strip.

[0038] The manufacturing system 30 can simultaneously modify the mechanical and / or geometric properties of the metal strip 10 and perform the roll cutting process in a single process flow. Therefore, an affordable metal strip 10 can be used as the starting material 40, such as hot-rolled strip. This avoids the transportation distances required when processing hot-rolled strip into cold-rolled strip, thus saving handling and processing energy consumption, and resulting in a better carbon balance for the metal strip 10 produced by the manufacturing system 30. Furthermore, the manufacturing system 30 can also individually adjust the material properties of the metal strip 10.

[0039] List of reference numerals 10 metal strips 12 matrix 14a First Edge Section 14b Second Edge Section 16 Internal Parts 18 thin slices 20 edge opening 22 Edge 24 internal openings 30 Manufacturing System 32 Roller Cutting Device 34 Tensioning device 36 forming device 38 heat input devices 40 starting materials 42 rolls L longitudinal direction

Claims

1. A manufacturing system (30) for producing a metal strip (10) with openings (20, 24), comprising at least one roll cutting device (32) for introducing a slit in the metal strip (10), at least one stretching device (34) for expanding the slit introduced into the metal strip (10) into an opening (20, 24), and at least one forming device (36) and / or at least one heat input device (38) for changing at least one material property of the metal strip (10).

2. The manufacturing system (30) according to claim 1, characterized in that, The tensile strength, elongation at break and / or yield strength of the metal strip (10) can be adjusted by the forming device (36) and / or the heat input device (38).

3. The manufacturing system (30) according to claim 1 or 2, characterized in that, The order of the devices (32, 34, 36, 38) is variable.

4. The manufacturing system (30) according to any one of the preceding claims, characterized in that, The number of devices (32, 34, 36, 38) is variable.

5. The manufacturing system (30) according to any one of the preceding claims, characterized in that, The forming device (36) is configured as a rolling device and / or a straightening device.

6. The manufacturing system (30) according to any one of the preceding claims, characterized in that, The heat input device (38) is configured as an annealing device.

7. The manufacturing system (30) according to any one of the preceding claims, characterized in that, The stretching device (34) is configured as a roller stretching device.

8. A method for producing a metal strip (10) with openings (20, 24) using a manufacturing system (30) according to any one of claims 1 to 7, comprising the following steps: a. Provide metal strip (10); b. Using a roller cutting device (32), a slit is introduced into the metal strip (10); c. Use a stretching device (34) to stretch the slit metal strip (10) to enlarge the slit into an opening (20, 24). Before the slit is introduced and / or after stretching, the metal strip (10) is shaped using at least one forming device (36) and / or the metal strip (10) is heat-treated using at least one heat input device (38).

9. The method according to claim 8, characterized in that, The metal strip (10) is rolled or straightened by forming device (36) and / or annealed by heat input device (38).

10. A metal strip (10) having openings (20, 24), the metal strip (10) being manufactured using a manufacturing system (30) according to any one of claims 1 to 7, and / or using the method according to claim 8 or 9.

11. The metal strip (10) according to claim 10, characterized in that, The starting material (40) of the metal strip (10) is hot-rolled strip.

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