CN113492230A - Steel plate shearing method and steel plate shearing device for improving efficiency - Google Patents
Steel plate shearing method and steel plate shearing device for improving efficiency Download PDFInfo
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- CN113492230A CN113492230A CN202110616103.0A CN202110616103A CN113492230A CN 113492230 A CN113492230 A CN 113492230A CN 202110616103 A CN202110616103 A CN 202110616103A CN 113492230 A CN113492230 A CN 113492230A
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- shearing
- large plate
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- conveying
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- 238000010008 shearing Methods 0.000 title claims abstract description 138
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 49
- 239000010959 steel Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000001514 detection method Methods 0.000 claims description 12
- 238000004513 sizing Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 6
- 238000007730 finishing process Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 239000002699 waste material Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/006—Accessories for shearing machines or shearing devices for obtaining pieces of a predetermined length, e.g. control arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
- B23D33/02—Arrangements for holding, guiding, and/or feeding work during the operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/22—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring existing or desired position of tool or work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to a steel plate shearing method and a steel plate shearing device for improving efficiency, wherein the steel plate shearing method comprises the following steps: conveying the large plate to the position below the splitting and shearing device through the first conveying device, and longitudinally shearing the large plate along the longitudinal shearing line of the large plate by the splitting and shearing device to obtain an incompletely sheared large plate of which the rear end is kept connected and the other part is longitudinally sheared; and the second conveying device is used for conveying the incompletely cut large plate to the lower part of the fixed-length shearing device from the front end to the rear end in sequence, the fixed-length shearing device carries out one or more times of transverse shearing on the cut part of the incompletely cut large plate along the transverse shearing line of the incompletely cut large plate, and at least two small plates are obtained by shearing along the transverse shearing line every time. The method is easy to operate, and the shearing efficiency of the large plate is greatly improved.
Description
Technical Field
The invention relates to the technical field of metallurgical industry, in particular to a steel plate shearing method and a steel plate shearing device for improving efficiency.
Background
In the production process of the steel plate, a large plate which is basically formed by rolling needs to be sheared, the large plate is firstly split by a splitting and shearing device along the longitudinal direction, then the cut-off board is conveyed to a cut-off cutting device for cutting off along the transverse direction after being cut off in a cut-off cutting device, one large plate is divided into two parts, in the process of conveying the two small plates which are cut from the middle part from the splitting and shearing device to the sizing and shearing device, because the lower surfaces of different small plates are influenced by factors such as uneven roller way and uneven friction force, the front ends of the two small plates can not be conveyed in a complete alignment way, when the small plates are conveyed to a sizing shearing device for sizing shearing, the front end of two platelets generally staggers certain distance, needs to cut two platelets to length respectively in proper order this moment, and finishing inefficiency leads to waiting in a large number to finish the serious backlog of board, influences the contract and delivers, and how to improve the shearing efficiency of subdivision large plate is the problem that this field is waited to solve urgently.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems of low steel plate finishing efficiency, serious overstock of a large number of plates to be finished and influence on contract delivery in the prior art.
In order to solve the above technical problems, the present invention provides a steel plate shearing method with improved efficiency, comprising a finishing process, the finishing process comprising the steps of:
s1, providing a large plate, a first conveying device, a splitting and shearing device, a second conveying device and a sizing and shearing device, wherein the large plate is provided with a large plate front end and a large plate rear end which are positioned at two longitudinal ends of the large plate;
s2, conveying the large plate to the position below the splitting and shearing device through the first conveying device, longitudinally shearing the large plate through the splitting and shearing device to obtain an incompletely sheared large plate, wherein the rear ends of the incompletely sheared large plate are kept connected, and other parts of the incompletely sheared large plate are longitudinally sheared;
and S3, conveying the incompletely cut large board to the lower part of the fixed-length shearing device in a posture that the front end of the large board is in front and the rear end of the large board is behind through the second conveying device, and transversely shearing the longitudinally cut part of the incompletely cut large board once or multiple times by the fixed-length shearing device, wherein at least two small boards are obtained by transversely shearing every time.
The method further comprises a pretreatment process, wherein the raw material steel plate is transversely sheared in the pretreatment process to obtain a large plate, and the front end of the large plate is a straight edge parallel to a transverse shearing line.
Further, the rear end of the large plate is a straight edge parallel to the transverse shearing line or a curved edge not parallel to the transverse shearing line.
Further, in step S2, the longitudinal dimension of the rear end of the large board which remains connected is 100-150 mm.
Further, in step S2, the longitudinal dimension of the rear end of the large board which remains connected is 120-130 mm.
Further, in step S2, the splitting and shearing device shears and divides the large plate into two parts longitudinally, and in step S3, two small plates are obtained by each transverse shearing.
Further, in step S3, the position of the incompletely cut large board on the second conveying device is detected by a detection device, the second conveying device controls start and stop according to the position of the incompletely cut large board, and the fixed-length cutting device controls start and stop according to the position of the incompletely cut large board.
The invention also provides another technical scheme: a steel plate shearing apparatus for carrying out the steel plate shearing method as described above, comprising:
the first conveying device is used for conveying the large plate;
the splitting and shearing device is used for incompletely splitting the large plate on the first conveying device along the longitudinal direction;
the second conveying device is used for conveying the large plates which are not completely cut;
the detection device is used for detecting the position of the large plate which is not completely cut on the second conveying device;
the fixed-length shearing device is used for completely shearing the incompletely sheared large plates on the second conveying device along the transverse direction;
the input end of the control device is in communication connection with the detection device, and the output end of the control device is in communication connection with the first conveying device, the subdivision shearing device, the second conveying device and the fixed-length shearing device.
Further, the first conveying device and the second conveying device are both roller conveying devices.
Further, the detection device is a laser length measuring instrument.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1) according to the steel plate shearing method and the steel plate shearing device for improving the efficiency, after the large plate is split by the splitting and shearing device, a certain distance is reserved at the rear end of the large plate, the large plate is not split and is kept connected, and the front end of the large plate can be aligned and conveyed in the process of conveying different parts of the large plate which are longitudinally split from the splitting and shearing device to the fixed-length shearing device, so that the different parts of the large plate which are longitudinally split can be simultaneously cut in a fixed length by the fixed-length shearing device, and the shearing efficiency of the steel plate during finishing is greatly improved;
2) according to the steel plate shearing method and the steel plate shearing device for improving the efficiency, after the fixed-length shearing is finished, the rear ends of the connected large plates are collected as waste materials, the rear ends of the large plates do not need to be longitudinally cut, and compared with the traditional finished longitudinal shearing, the shearing process of longitudinal shearing cannot be increased;
3) according to the steel plate shearing method and the steel plate shearing device for improving the efficiency, disclosed by the invention, the longitudinal size of the rear end of the connected large plate is kept at 100-150mm, so that the large plate can be ensured to be connected and synchronously conveyed, the size of the rear end of the large plate serving as waste can be reduced as much as possible, and the waste of the large plate is reduced;
4) the invention discloses a steel plate shearing method and a steel plate shearing device for improving efficiency, and a roller conveying device is simple in structure and high in reliability;
5) the invention discloses a steel plate shearing method and a steel plate shearing device with improved efficiency, a laser length measuring instrument is high in precision and quick in dynamic response, measurement can be completed quickly and accurately, and the steel plate shearing method and the steel plate shearing device are beneficial to quick sizing of a sizing and shearing device.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference will now be made in detail to the present disclosure, examples of which are illustrated in the accompanying drawings.
FIG. 1 is a front view of a steel plate shearing apparatus;
fig. 2 is a top view of a schematic of large panel transport.
The specification reference numbers indicate: 10. a large plate; 11. the front end of the large plate; 12. the rear end of the large plate; 13. a large panel that is not completely cut; 13. a longitudinal shear line; 14. a transverse shear line; 20. a first conveying device; 30. subdividing a shearing device; 40. a second conveying device; 50. shear device is decided to chi.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further improvements to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure. In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.
Referring to fig. 1 and 2, as illustrated therein, an improved efficiency steel sheet shearing method includes a finishing process including the steps of:
s1, providing a large plate 10, a first conveying device 20, a splitting and shearing device 30, a second conveying device 40 and a sizing and shearing device 50, wherein the large plate 10 is provided with a large plate front end 11 and a large plate rear end 12 which are positioned at two longitudinal ends of the large plate;
s2, conveying the large plate 10 to the position below the splitting and shearing device 30 through the first conveying device 20, and longitudinally shearing the large plate 10 by the splitting and shearing device 30 along the longitudinal shearing line 13 to obtain the incompletely sheared large plate 10 of which the rear end is kept connected and the other part is longitudinally sheared;
and S3, conveying the incompletely cut large board 10 to the lower part of the fixed-length shearing device 50 in a posture that the front end 11 of the large board is in front and the rear end 12 of the large board is in back through the second conveying device 40, and transversely shearing the longitudinally cut part of the incompletely cut large board 10 once or more times by the fixed-length shearing device 50 along the transverse shearing line 14, wherein at least two small boards are obtained by each transverse shearing.
In the above, when the large plate is longitudinally sheared, the rear end of the large plate is kept connected, so that the front end of the longitudinally sheared part of the large plate is ensured to be transported in alignment during subsequent transportation, different longitudinally sheared parts of the large plate are simultaneously sized and sheared, and the shearing efficiency of the steel plate is improved.
The preferred embodiment in this embodiment further includes a pretreatment step of performing transverse shearing on the raw steel plate to obtain the large plate 10, where the front end 11 of the large plate is a straight edge parallel to the transverse shearing line 14.
In the above, the large board is pre-processed before finishing, and the front end of the large board is transversely cut during the pre-processing so that the front end of the large board is a straight edge parallel to the transverse cutting line 14, and the large board can be directly sized without cutting the front end of the large board after reaching the sizing and cutting device.
In the preferred embodiment of this embodiment, in step S1, the large board rear end 12 is a straight side parallel to the transverse cut line 14 or a curved side not parallel to the transverse cut line 14.
In the above, the rear end of the large plate is subsequently collected as scrap, and therefore, the shape of the rear end of the large plate does not need to be cut in advance, simplifying the pretreatment process of the steel plate.
In the preferred embodiment of the present embodiment, in step S2, the longitudinal dimension of the rear end 12 of the large board to be kept connected is 100-150 mm. For example 100mm or 110mm or 120mm or 130mm or 140mm or 150 mm. The actual size is determined according to the shape of the rear end of the large plate, and the longitudinal size of the rear end of the large plate is reduced as far as possible on the premise that the large plate is kept connected and the final shape of the small plate is not affected, so that the waste of steel plates is reduced.
In the preferred embodiment of this embodiment, in step S2, the splitting and shearing device 30 splits the large plate 10 into two parts by longitudinal shearing, and in step S3, two small plates are obtained by each transverse shearing.
In the above, the longitudinal shearing of the large plate is divided into two, which is a common longitudinal shearing method. In other embodiments, the large plate can be longitudinally cut into three or more parts according to actual needs, so that three or more small plates are obtained by each transverse cutting.
In the preferred embodiment of the present embodiment, in step S3, the position of the incompletely cut large board 10 on the second conveyor 40 is detected by a detection device (not shown), the second conveyor 40 is controlled to start or stop according to the position of the incompletely cut large board 10, and the fixed-length shearing device 50 is controlled to start or stop according to the position of the incompletely cut large board 10.
In the above, the detection device detects the position of the front end of the incompletely cut large plate, and after the front end of the large plate reaches the preset position, it indicates that the small plate with the preset size can be obtained by cutting the steel plate by the fixed-length cutting device.
The following steel plate shearing apparatus for carrying out the above steel plate shearing method includes:
a first conveying device 20, wherein the first conveying device 20 is used for conveying the large plate 10;
the splitting and shearing device 30, the splitting and shearing device 30 is used for incompletely splitting the large plate 10 on the first conveying device 20 along the longitudinal direction;
a second conveying device 40, wherein the second conveying device 40 is used for conveying the large plate 10 which is not completely cut;
a detecting device (not shown in the figures) for detecting the position of the incompletely cut large plate 10 on the second conveying device 40;
the fixed-length shearing device 50 is used for completely shearing the incompletely sheared large plates 10 on the second conveying device 40 along the transverse direction by the fixed-length shearing device 50;
and a control device (not shown), wherein the input end of the control device is in communication connection with the detection device, and the output end of the control device is in communication connection with the first conveying device 20, the splitting and shearing device 30, the second conveying device 40 and the fixed-length shearing device 50.
In the above, the subdivision shearing device is arranged above the first conveying device, the control device controls the first conveying device and the subdivision shearing device according to a preset program, the subdivision shearing device incompletely shears large plates on the first conveying device, the fixed-length shearing device is arranged above the second conveying device, the control device controls the second conveying device and the fixed-length shearing device according to detection information of the detection device, the fixed-length shearing device shears large plates on the second conveying device, the output end of the first conveying device is connected with the input end of the second conveying device, or a third conveying device is arranged between the output end of the first conveying device and the input end of the second conveying device, so that the problem of steel plate accumulation caused by the fact that the first conveying device and the second conveying device are asynchronous is solved.
In a preferred embodiment of the present embodiment, the first conveyor 20 and the second conveyor 40 are both roller conveyors.
In a preferred embodiment of the present invention, the detection device is a laser length measuring instrument.
In the above, the incompletely cut large plates cannot be staggered at the front ends of different parts cut longitudinally due to the fact that the rear ends of the large plates are connected into a whole in the conveying process, and when the large plates are cut to length, the different parts cut longitudinally are cut to length simultaneously. By doing so, the finishing efficiency is improved by at least 1.5 times.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. An improved steel plate shearing method is characterized by comprising a finishing process, wherein the finishing process comprises the following steps:
s1, providing a large plate, a first conveying device, a splitting and shearing device, a second conveying device and a sizing and shearing device, wherein the large plate is provided with a large plate front end and a large plate rear end which are positioned at two longitudinal ends of the large plate;
s2, conveying the large plate to the position below the splitting and shearing device through the first conveying device, longitudinally shearing the large plate through the splitting and shearing device to obtain an incompletely sheared large plate, wherein the rear ends of the incompletely sheared large plate are kept connected, and other parts of the incompletely sheared large plate are longitudinally sheared;
and S3, conveying the incompletely cut large board to the lower part of the fixed-length shearing device in a posture that the front end of the large board is in front and the rear end of the large board is behind through the second conveying device, and transversely shearing the longitudinally cut part of the incompletely cut large board once or multiple times by the fixed-length shearing device, wherein at least two small boards are obtained by transversely shearing every time.
2. The method for shearing a steel plate with improved efficiency according to claim 1, further comprising a pretreatment step of subjecting the raw steel plate to transverse shearing to obtain a large plate, wherein the front end of the large plate is a straight edge parallel to the transverse shearing line.
3. The method of claim 2, wherein the rear end of the large plate is a straight side parallel to the transverse shear line or a curved side not parallel to the transverse shear line.
4. The efficiency-improved steel sheet shearing method as recited in claim 1, wherein in the step S2, the longitudinal dimension of the rear end of the large sheet remaining connected is 100-150 mm.
5. The efficiency-improved steel plate shearing method as recited in claim 4, wherein in the step S2, the longitudinal dimension of the rear end of the large plate which is kept connected is 120-130 mm.
6. The method for shearing a steel plate with improved efficiency as claimed in claim 1, wherein the splitting and shearing device splits the large plate into two parts by longitudinal shearing in step S2, and two small plates are obtained by each transverse shearing in step S3.
7. The method for shearing a steel plate according to claim 1, wherein in step S3, the position of the incompletely sheared large plate on the second conveying device is detected by a detecting device, the second conveying device is controlled to start or stop according to the position of the incompletely sheared large plate, and the fixed-length shearing device is controlled to start or stop according to the position of the incompletely sheared large plate.
8. A steel plate shearing apparatus for carrying out the steel plate shearing method as recited in claim 7, comprising:
the first conveying device is used for conveying the large plate;
the splitting and shearing device is used for incompletely splitting the large plate on the first conveying device along the longitudinal direction;
the second conveying device is used for conveying the large plates which are not completely cut;
the detection device is used for detecting the position of the large plate which is not completely cut on the second conveying device;
the fixed-length shearing device is used for completely shearing the incompletely sheared large plates on the second conveying device along the transverse direction;
the input end of the control device is in communication connection with the detection device, and the output end of the control device is in communication connection with the first conveying device, the subdivision shearing device, the second conveying device and the fixed-length shearing device.
9. A steel sheet shearing apparatus according to claim 8, wherein said first conveying means and said second conveying means are both roller conveying means.
10. A steel plate shearing apparatus as defined in claim 8, wherein said detecting means is a laser length measuring instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110616103.0A CN113492230B (en) | 2021-06-02 | 2021-06-02 | Steel plate shearing method and steel plate shearing device for improving efficiency |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110616103.0A CN113492230B (en) | 2021-06-02 | 2021-06-02 | Steel plate shearing method and steel plate shearing device for improving efficiency |
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| CN113492230A true CN113492230A (en) | 2021-10-12 |
| CN113492230B CN113492230B (en) | 2022-08-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1303176A (en) * | 1970-04-01 | 1973-01-17 | ||
| CN203390281U (en) * | 2013-07-23 | 2014-01-15 | 河南龙成重型钢结构有限公司 | Efficient hydraulic gate type plate shearing machine |
| CN106180880A (en) * | 2016-08-30 | 2016-12-07 | 中冶南方工程技术有限公司 | Thin plate detects and cutting system automatically |
| CN110142448A (en) * | 2019-06-27 | 2019-08-20 | 冯艳 | A kind of steel grating automation cutting system, automation cutting method, automatic production line and preparation method |
| CN111774646A (en) * | 2020-06-19 | 2020-10-16 | 超威电源集团有限公司 | Lead-acid storage battery polar plate slicing device |
-
2021
- 2021-06-02 CN CN202110616103.0A patent/CN113492230B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1303176A (en) * | 1970-04-01 | 1973-01-17 | ||
| CN203390281U (en) * | 2013-07-23 | 2014-01-15 | 河南龙成重型钢结构有限公司 | Efficient hydraulic gate type plate shearing machine |
| CN106180880A (en) * | 2016-08-30 | 2016-12-07 | 中冶南方工程技术有限公司 | Thin plate detects and cutting system automatically |
| CN110142448A (en) * | 2019-06-27 | 2019-08-20 | 冯艳 | A kind of steel grating automation cutting system, automation cutting method, automatic production line and preparation method |
| CN111774646A (en) * | 2020-06-19 | 2020-10-16 | 超威电源集团有限公司 | Lead-acid storage battery polar plate slicing device |
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| CN113492230B (en) | 2022-08-09 |
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Address after: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Fengzhen Shagang Technology Building Patentee after: Jiangsu Shagang Steel Co.,Ltd. Patentee after: JIANGSU SHAGANG GROUP Co.,Ltd. Address before: Suzhou City, Jiangsu province 215625 Zhangjiagang City Jin Fengzhen Shagang Technology Building Patentee before: ZHANGJIAGANG HONGCHANG STEEL PLATE Co.,Ltd. Patentee before: JIANGSU SHAGANG GROUP Co.,Ltd. |
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| CP03 | Change of name, title or address |