A production process of super-large size plate

Abstract

The application discloses a super-large specification plate production process, comprising the following steps: step S1: obtaining a slab and loading the slab into a rolling mill for rolling; step S2: when the slab is rolled to a thickness of a target thickness, the slab is sheared into a plurality of plates with a target length, and the target length is a target length calculated according to the length of a finished product and the elongation of the slab; step S3: the plates are continuously and repeatedly rolled until the plates are rolled to the size of the finished product, and the finished product is obtained; and step S4: the finished product is moved to the outlet of the rolling mill, and the finished product is unloaded by using hoisting equipment. The super-large specification plate production process can effectively reduce the residence time of the finished product on a light roller way and the contact range with the light roller way, achieve the technical effects of reducing the unevenness of the finished plate, avoiding large-area scratches and oil stains, meet all technical indexes and user use requirements, and improve the finished product rate of the super-large specification plate.

Description

Technical Field

[0001] This invention relates to the field of sheet metal production methods, and in particular to a process for producing extra-large sheet metal. Background Technology

[0002] In recent years, with the continuous upgrading of sheet metal processing equipment, the market demand for extra-large sheet metal has been increasing. Extra-large sheet metal can not only reduce the number of welds in the final product, improve the overall performance of the final product, and reduce potential quality defects, but also reduce geometric waste and increase the yield of semi-finished products.

[0003] In the prior art, after the sheet metal is rolled, it is generally necessary to transport the sheet metal from the mill exit to the unloading position. The area between the mill exit and the unloading position is a light roller conveyor. The conveying plane of the light roller conveyor is an inverted triangle and the roller conveyor is relatively long. The sheet metal after rolling stays on the roller conveyor for a long time, causing the middle of the extra-large sheet metal to be concave in the hot state. The contact area between the lower surface and the roller conveyor is increased and the contact time is longer, which easily produces large-area scratches and oil stains.

[0004] Therefore, how to effectively improve the extrusion processing quality of ultra-large plates is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a manufacturing process for extra-large panels, which reduces damage to extra-large panels and improves processing efficiency and quality.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A process for producing extra-large format boards includes the following steps:

[0008] Step S1: Obtain the slab and load it into the rolling mill for rolling;

[0009] Step S2: When the slab is rolled to the target thickness, the slab is cut into several plates with a target length, and the target length is calculated based on the length of the finished product and the elongation of the slab.

[0010] Step S3: Continue rolling the sheet material repeatedly until it reaches the finished product size to obtain the finished product;

[0011] Step S4: Move the finished product to the exit of the rolling mill and unload the finished product using a hoisting device.

[0012] Preferably, step S2 further includes: when the slab is rolled to the target thickness, controlling the slab to move to the light roller table at the mill exit and shearing the slab.

[0013] Preferably, in step S2, the target thickness is 80-100 mm.

[0014] Preferably, in step S3, the thickness H of the finished product is ≤50mm, the width W is ≥3000mm, and the length L is ≥10000mm.

[0015] Preferably, the slab is an aluminum alloy slab.

[0016] Preferably, it further includes:

[0017] Step S5: Measure the dimensions of the finished product after unloading.

[0018] Preferably, the hoisting equipment includes a lifting component and a transfer component; step S4 further includes:

[0019] The finished products are moved to the exit of the rolling mill, and before all the finished products enter the light roller conveyor, the lifting components are used to lift the finished products one by one, and the transfer components are used to rotate the lifting components and the finished products to the storage area to complete the unloading of the finished products.

[0020] Preferably, step S4 further includes:

[0021] The finished product is moved to the exit of the rolling mill. When a single finished product moves to the light roller conveyor, the lifting component is used to lift the finished product, and the transfer component is used to rotate the lifting component and the finished product to the storage area to complete the unloading of the finished product.

[0022] Repeat the above process to unload the next finished product.

[0023] Preferably, the lifting component is a high-temperature resistant lifting component, and the high-temperature resistant lifting component is installed on the transfer component.

[0024] Preferably, the lifting component is a high-temperature resistant suction cup, which can be adsorbed onto the surface of the finished product.

[0025] The ultra-large plate production process provided by this invention includes the following steps: Step S1: Obtain a slab and load the slab into a rolling mill for rolling; Step S2: When the slab is rolled to the target thickness, cut the slab into several plates with a target length, wherein the target length is calculated based on the length of the finished product and the elongation of the slab; Step S3: Continue to roll the plates repeatedly until the plates are rolled to the finished product size to obtain the finished product; Step S4: Move the finished product to the exit of the rolling mill and unload the finished product using a hoisting device. The ultra-large sheet production process provided by this invention, on the one hand, changes the shearing time of the slab by cutting it into several sheets of target length when the slab is rolled to the target thickness, thus avoiding the need for shearing on the light roller conveyor after the slab is rolled into a finished product; on the other hand, after obtaining the finished product, it is moved to the exit of the rolling mill and unloaded using a hoisting device, avoiding unloading on the light roller conveyor. Through these two aspects, the dwell time and contact area of ​​the finished product on the light roller conveyor can be effectively reduced, thereby reducing the unevenness of the finished sheet, avoiding large-area scratches and oil stains, meeting all technical indicators and user requirements, and improving the yield of ultra-large sheet.

[0026] In a preferred embodiment, the method further includes: Step S5: Measuring the dimensional information of the finished product after unloading. The above process, which previously involved measuring the dimensions on a lightweight roller conveyor, is now adjusted to measuring after unloading. This also reduces the dwell time of the sheet metal on the lightweight roller conveyor after rolling, effectively preventing the problem of indentation in the center of oversized sheets under heat, and effectively reducing sheet unevenness. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A flowchart of an embodiment of the production process for ultra-large-size boards provided by the present invention;

[0029] Figure 2 A flowchart of Embodiment 2 of the production process for ultra-large-size boards provided by the present invention;

[0030] Figure 3This is a flowchart of Embodiment 3 of the production process for ultra-large-size boards provided by the present invention. Detailed Implementation

[0031] The core of this invention is to provide a production process for ultra-large format boards, which can significantly improve the yield of ultra-large format boards and meet the requirements for use.

[0032] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Please refer to Figures 1 to 3 , Figure 1 A flowchart of an embodiment of the production process for ultra-large-size boards provided by the present invention; Figure 2 A flowchart of Embodiment 2 of the production process for ultra-large-size boards provided by the present invention; Figure 3 This is a flowchart of Embodiment 3 of the production process for ultra-large-size boards provided by the present invention.

[0034] In this embodiment, the production process of extra-large panels includes the following steps:

[0035] Step S1: Obtain the slab and load it into the rolling mill for rolling;

[0036] Step S2: When the slab is rolled to the target thickness, the slab is cut into several plates with a target length, and the target length is calculated based on the length of the finished product and the elongation of the slab.

[0037] Step S3: Continue rolling the sheet material repeatedly until it reaches the finished product size to obtain the finished product;

[0038] Step S4: Move the finished product to the exit of the rolling mill and unload the finished product using a hoisting device.

[0039] Specifically, in step S2, the target length is calculated based on the length of the finished product and the elongation of the slab. In other words, the sheared sheet, after specific rolling processing, can directly obtain the desired finished product without further shearing. The selection of the target length depends on a combination of the target thickness and the thickness and length of the finished product, and can be derived through known experimental data or experiments. This ultra-large-format plate production process, on the one hand, changes the shearing time of the slab by shearing it into several sheets of the target length when the slab is rolled to the target thickness, avoiding the need for shearing on a light roller conveyor after the slab is rolled into a finished product; on the other hand, after obtaining the finished product, it is moved to the exit of the rolling mill and unloaded using a hoisting device, avoiding unloading on the light roller conveyor. Without large-scale modifications to the ultra-large-format plate rolling equipment, by optimizing the process flow, defects such as scratches and oil stains on the surface of ultra-large-format plates after rolling can be effectively solved, resulting in low cost and significant effects.

[0040] The extra-large size board production process provided by this invention can effectively reduce the dwell time of the finished product on the light roller conveyor and the contact range with the light roller conveyor, thereby reducing the unevenness of the finished board, avoiding large-area scratches and oil stains, meeting all technical indicators and user requirements, and improving the yield of extra-large size boards.

[0041] In some embodiments, step S2 further includes: when the slab is rolled to the target thickness, controlling the slab to move to the light roller table at the mill exit, and shearing the slab. Specifically, the shearing equipment is installed at the location of the light roller table. By moving the slab to the light roller table at the mill exit, the slab can be easily sheared, which is efficient, convenient for length measurement, and has high accuracy.

[0042] In some embodiments, the target thickness in step S2 is 80-100 mm. That is, when the slab is rolled to a thickness of 80-100 mm, the slab is moved to the light roller table at the mill exit and sheared. This arrangement is for convenience.

[0043] In some embodiments, in step S3, the thickness H of the finished product is ≤50mm, the width W is ≥3000mm, and the length L is ≥10000mm. Specifically, this production process is mainly used for the production and processing of extra-large panels, which refer to finished panels with a width W ≥3000mm and a length L ≥10000mm.

[0044] In some embodiments, the slab is an aluminum alloy slab, meaning that the production process is preferably used to process aluminum alloy slabs, which have good ductility and are easy to process; of course, the production process can also be applied to the processing of slabs made of other materials.

[0045] In some implementations, it also includes:

[0046] Step S5: Measure the dimensions of the finished product after unloading. In the above process, the measurement of the finished product's dimensions has been changed from the existing technology of measuring on a light-duty roller conveyor to measuring after unloading. This also reduces the dwell time of the sheet on the light-duty roller conveyor after rolling, effectively avoiding the problem of the center of oversized sheets easily becoming concave under heat, and effectively reducing the flatness of the sheet.

[0047] In some embodiments, the hoisting equipment includes a lifting component and a transfer component; step S4 further includes:

[0048] The finished products are moved to the exit of the rolling mill, and before all the finished products enter the light roller conveyor, the lifting components lift each product one by one, and the transfer components rotate the lifting components and the finished products to the storage area to complete the unloading of the finished products. Specifically, after the sheet metal is rolled to obtain finished products, the finished products are moved one by one from the exit of the rolling mill to the light roller conveyor. This production process, by lifting the finished products before they all enter the light roller conveyor to complete the unloading process, and by changing the unloading position after rolling, shortens the length of the light roller conveyor at the exit by about 40 meters, reducing the contact area between the finished sheet metal and the light roller conveyor by about 50%.

[0049] In some implementations, step S4 further includes:

[0050] The finished product is moved to the exit of the rolling mill. When a single finished product moves to the light roller conveyor, the lifting component is used to lift the finished product, and the transfer component is used to rotate the lifting component and the finished product to the storage area to complete the unloading of the finished product.

[0051] Repeat the above steps to unload the next finished product.

[0052] Specifically, the above steps are to further reduce the contact time between the finished product and the lightweight roller conveyor, and to unload the finished product as it moves onto the lightweight roller conveyor, thereby improving unloading efficiency and minimizing the contact time between the finished product sheet and the lightweight roller conveyor.

[0053] In some embodiments, the lifting component is a high-temperature resistant lifting component, which is mounted on the transfer component. Specifically, by connecting the high-temperature resistant lifting component to the finished sheet material, the impact of the high temperature of the finished sheet material on the lifting component can be reduced, thereby extending the service life of the lifting component.

[0054] In some embodiments, the lifting component is a high-temperature resistant suction cup, which can adhere to the surface of the finished product. Using a high-temperature resistant suction cup to transfer the finished product can reduce the connection time between the lifting component and the finished product sheet, and improve the transfer efficiency; of course, the lifting component can also be other high-temperature resistant components, such as high-temperature resistant ropes, high-temperature resistant hooks, etc.

[0055] Example 1

[0056] The manufacturing process for this extra-large board includes the following steps:

[0057] Step S1: Obtain the slab and load it into the rolling mill for rolling;

[0058] Step S2: When the slab is rolled to the target thickness, the slab is cut into several plates with a target length, and the target length is calculated based on the length of the finished product and the elongation of the slab.

[0059] Step S3: Continue rolling the sheet material repeatedly until it reaches the finished product size to obtain the finished product;

[0060] Step S4: Move the finished product to the exit of the rolling mill and unload the finished product using a hoisting device.

[0061] Example 2

[0062] The manufacturing process for this extra-large board includes the following steps:

[0063] Step S1: Obtain the slab and load it into the rolling mill for rolling;

[0064] Step S2: When the slab is rolled to the target thickness, the slab is cut into several plates with a target length, and the target length is calculated based on the length of the finished product and the elongation of the slab.

[0065] Step S3: Continue rolling the sheet material repeatedly until it reaches the finished product size to obtain the finished product;

[0066] Step S4: Move the finished product to the exit of the rolling mill and unload the finished product using a hoisting device;

[0067] Step S5: Measure the dimensions of the finished product after unloading.

[0068] Example 3

[0069] The manufacturing process for this extra-large board includes the following steps:

[0070] Step S1: Obtain the slab and load it into the rolling mill for rolling;

[0071] Step S2: When the slab is rolled to the target thickness, the slab is cut into several plates with a target length, and the target length is calculated based on the length of the finished product and the elongation of the slab.

[0072] Step S3: Continue rolling the sheet material repeatedly until it reaches the finished product size to obtain the finished product;

[0073] Step S4: Move the finished product to the exit of the rolling mill. When a single finished product moves onto the light roller conveyor, the lifting component lifts the finished product, and the transfer component rotates the lifting component and the finished product to the storage area to complete the unloading of the finished product. Repeat the above process to unload the next finished product.

[0074] Step S5: Measure the dimensions of the finished product after unloading.

[0075] This extra-large sheet production process reduces the sheet's dwell time on the roller conveyor by approximately 86% through three methods: pre-calculating the shearing amount and cutting the sheet to the required target length when the sheet thickness is 80-100mm; measuring the dimensions after unloading; and changing the unloading position after rolling. This effectively reduces the contact area and dwell time between the sheet and the light roller conveyor after rolling, thereby improving the yield.

[0076] The above provides a detailed description of the production process for ultra-large-format boards provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A manufacturing process for extra-large size boards, characterized in that, Includes the following steps: Step S1: Obtain the slab and load it into the rolling mill for rolling; Step S2: When the slab is rolled to the target thickness, the slab is cut into several plates with a target length, and the target length is calculated based on the length of the finished product and the elongation of the slab. Step S3: Continue rolling the sheet material repeatedly until it reaches the finished product size to obtain the finished product; Step S4: Move the finished product to the exit of the rolling mill and unload the finished product using a hoisting device.

2. The production process for ultra-large size boards according to claim 1, characterized in that, Step S2 further includes: when the slab is rolled to the target thickness, controlling the slab to move to the light roller table at the mill exit and shearing the slab.

3. The production process for ultra-large size boards according to claim 2, characterized in that, In step S2, the target thickness is 80-100mm.

4. The production process for ultra-large size boards according to claim 1, characterized in that, In step S3, the thickness H of the finished product is ≤50mm, the width W is ≥3000mm, and the length L is ≥10000mm.

5. The production process for ultra-large size boards according to claim 1, characterized in that, The slab is an aluminum alloy slab.

6. The production process for extra-large panels according to any one of claims 1 to 5, characterized in that, Also includes: Step S5: Measure the dimensions of the finished product after unloading.

7. The production process for extra-large panels according to any one of claims 1 to 5, characterized in that, The hoisting equipment includes a lifting component and a transfer component; step S4 further includes: The finished products are moved to the exit of the rolling mill, and before all the finished products enter the light roller conveyor, the lifting components are used to lift the finished products one by one, and the transfer components are used to rotate the lifting components and the finished products to the storage area to complete the unloading of the finished products.

8. The production process for extra-large panels according to claim 7, characterized in that, Step S4 further includes: The finished product is moved to the exit of the rolling mill. When a single finished product moves to the light roller conveyor, the lifting component is used to lift the finished product, and the transfer component is used to rotate the lifting component and the finished product to the storage area to complete the unloading of the finished product. Repeat the above process to unload the next finished product.

9. The production process for extra-large panels according to claim 7, characterized in that, The lifting component is a high-temperature resistant lifting component, which is installed on the transfer component.

10. The production process for ultra-large size boards according to claim 9, characterized in that, The lifting component is a high-temperature resistant suction cup, which can be adsorbed onto the surface of the finished product.

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