WO2022172516A1 - 鋼帯のレーザー切断方法、レーザー切断設備、冷間圧延方法、及び冷延鋼帯の製造方法 - Google Patents
鋼帯のレーザー切断方法、レーザー切断設備、冷間圧延方法、及び冷延鋼帯の製造方法 Download PDFInfo
- Publication number
- WO2022172516A1 WO2022172516A1 PCT/JP2021/039401 JP2021039401W WO2022172516A1 WO 2022172516 A1 WO2022172516 A1 WO 2022172516A1 JP 2021039401 W JP2021039401 W JP 2021039401W WO 2022172516 A1 WO2022172516 A1 WO 2022172516A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel strip
- laser cutting
- cold
- dross
- laser
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 106
- 239000010959 steel Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000003698 laser cutting Methods 0.000 title claims abstract description 46
- 238000005097 cold rolling Methods 0.000 title claims description 30
- 239000010960 cold rolled steel Substances 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 description 28
- 239000000956 alloy Substances 0.000 description 13
- 238000005096 rolling process Methods 0.000 description 12
- 238000003466 welding Methods 0.000 description 11
- 229910000976 Electrical steel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007716 flux method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/28—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/08—Devices involving relative movement between laser beam and workpiece
- B23K26/083—Devices involving movement of the workpiece in at least one axial direction
- B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
- B23K26/0846—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt for moving elongated workpieces longitudinally, e.g. wire or strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
- B21B2015/0021—Cutting or shearing the product in the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0092—Welding in the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/16—Bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Definitions
- the present invention relates to a steel strip laser cutting method, laser cutting equipment, a cold rolling method, and a cold rolled steel strip manufacturing method.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a steel strip laser cutting method and a laser cutting method capable of suppressing breakage of the steel strip at the weld even in the case of a brittle material or a high alloy material. to provide facilities. Another object of the present invention is to provide a steel strip cold rolling method capable of stably cold-rolling a steel strip by suppressing breakage of the steel strip at the weld even in the case of a brittle material or a high-alloy material.
- Another object of the present invention is to provide a method for producing a cold-rolled steel strip that can stably produce a cold-rolled steel strip by suppressing breakage of the steel strip at the weld zone even in the case of a brittle material or a high-alloy material. to provide.
- the inventors of the present invention have found that the dross generated in the cross-section of the steel strip after being cut by laser light extends into a sharp shape by cold rolling and serves as the starting point of cracks from the ends of the steel strip in the width direction. I realized that it could be. Therefore, as a result of examining the relationship between the dross and the cracking susceptibility of the steel strip, it was found that the cracking susceptibility of the steel strip increases when the dross generated during laser cutting is concentrated.
- the inventors of the present invention have found that by controlling the dross aspect ratio (dross height/dross width) and the dross spacing on the laser cut surface of the steel strip, the width of the steel strip even after cold rolling is reduced. It was found that cracking from the direction end can be suppressed.
- the steel strip laser cutting method uses a laser beam to cut the widthwise end of the steel strip including the joint where the trailing end of the preceding steel strip and the leading end of the succeeding steel strip are joined.
- a method for laser cutting a steel strip wherein the distance between the dross having an aspect ratio of 1.0 or more is 1.0 mm or more at the width direction end after cutting, and the dross having an aspect ratio of 1.0 or more and the aspect ratio The steel strip is cut so that the spacing between dross less than 1.0 is 1.0 mm or greater.
- the cutting step of cutting the ends in the width direction and the hole forming step of forming one or more holes in the steel strip with a laser may be performed continuously while the steel strip is stopped.
- the steel strip laser cutting equipment according to the present invention executes the steel strip laser cutting method according to the present invention.
- the steel strip cold rolling method according to the present invention cold-rolls the steel strip cut by the steel strip laser cutting method according to the present invention.
- the method for cutting a cold-rolled steel strip according to the present invention manufactures a cold-rolled steel strip through steps including the cold-rolling method for a steel strip according to the present invention.
- the steel strip laser cutting method and laser cutting equipment it is possible to suppress breakage of the steel strip at the weld even in the case of a brittle material or a high-alloy material. Moreover, according to the method for cold rolling a steel strip according to the present invention, even in the case of a brittle material or a high-alloy material, the steel strip can be stably cold-rolled by suppressing breakage of the steel strip at the weld zone.
- the method for manufacturing a cold-rolled steel strip according to the present invention it is possible to stably manufacture a cold-rolled steel strip by suppressing breakage of the steel strip at the weld even in the case of a brittle material or a high-alloy material. can.
- FIG. 1 is a schematic diagram for explaining a steel strip laser cutting method according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a cross-sectional image and a surface image of a test material after cold rolling in a portion where a large amount of dross is generated.
- FIG. 3 is a diagram showing a cross-sectional image and a surface image of a test material after cold rolling in a portion where the amount of dross generated is small.
- FIG. 4 is a diagram for explaining the duty factor.
- the preceding steel strip 1 and the following steel strip can be used without causing breakage at the weld zone 3.
- Strip 2 can be cold rolled continuously.
- the shape of the notch 11 and the trajectory of laser cutting are not limited to the present embodiment, and the shape of the notch 11 may be other shapes such as a semicircular shape and a substantially isosceles trapezoidal shape. No problem.
- the following laboratory-scale rolling experiment was conducted. That is, a 2 mm-thick silicon steel sheet containing 3.3% by mass of Si and having both ends in the width direction cut by laser was used as a test material. Then, the test material was cold-rolled at a total rolling reduction of 50% using a rolling mill with a work roll diameter of 500 mm without applying tension.
- the distance between dross having an aspect ratio (dross height/dross width) of 1.0 or more generated during laser cutting is set to 1.0 mm or more, and dross having an aspect ratio of 1.0 or more and the dross having an aspect ratio of less than 1.0 shall be 1.0 mm or more.
- the shape of the dross develops into a sharp shape during cold rolling even in the case of brittle materials such as silicon steel sheets and high-strength steel sheets with high Si and Mn contents and high alloy materials. Cold rolling can be performed without causing breakage of the steel strip at the welded portion.
- the cutting conditions were gas type: compressed air, gas pressure of 1.0 MPa, laser output of 0.8 kW, duty factor of 0.5, and scanning speed of 3.0 m/min.
- rolling was performed in the same manner as in the example, except that laser cutting was not performed to meet the conditions of the present invention, and the laser cutting conditions were such that sharp-shaped dross was generated more.
- Table 1 shows the state of dross and the rate of occurrence of broken coils after rolling 100 coils in Examples and Comparative Examples in which laser cutting was performed as described above.
- the incidence of weld fracture was 8.0 to 12.0% in Comparative Examples, whereas the incidence of weld fracture was 2% or less in Examples. .
- a steel strip laser cutting method and laser cutting equipment capable of suppressing breakage of the steel strip at the weld even in the case of a brittle material or a high alloy material.
- a steel strip cold rolling method capable of stably performing cold rolling while suppressing breakage of the steel strip at the weld even in the case of a brittle material or a high-alloy material. can do.
- a method for producing a cold-rolled steel strip that can stably produce a cold-rolled steel strip by suppressing breakage of the steel strip at the weld even in the case of a brittle material or a high-alloy material. be able to.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Metal Rolling (AREA)
- Laser Beam Processing (AREA)
Abstract
Description
2 後行鋼帯
11 ノッチ
12 孔部
Claims (5)
- レーザー光を用いて先行鋼帯の後端部と後行鋼帯の先端部とを接合した接合部を含む鋼帯の幅方向端部を切断する鋼帯のレーザー切断方法であって、
切断後の前記幅方向端部において、アスペクト比1.0以上のドロス間の間隔が1.0mm以上、且つ、アスペクト比1.0以上のドロスとアスペクト比1.0未満のドロス間の間隔が1.0mm以上となるように鋼帯を切断する、鋼帯のレーザー切断方法。 - 前記幅方向端部を切断する切断工程と、前記鋼帯に一つ以上の孔部をレーザーにより形成する孔部形成工程とを、前記鋼帯を停止させた状態で連続して実行する、請求項1に記載の鋼帯のレーザー切断方法。
- 請求項1又は2に記載の鋼帯のレーザー切断方法を実行する、鋼帯のレーザー切断設備。
- 請求項1又は2に記載の鋼帯のレーザー切断方法によって切断された鋼帯に冷間圧延を行う、鋼帯の冷間圧延方法。
- 請求項4に記載の鋼帯の冷間圧延方法を含む工程によって冷延鋼帯を製造する、冷延鋼帯の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21925763.1A EP4252957A4 (en) | 2021-02-15 | 2021-10-26 | LASER CUTTING PROCESS FOR STEEL STRIP, LASER CUTTING MACHINE, COLD ROLLING PROCESS AND MANUFACTURING PROCESS FOR COLD ROLLED STEEL STRIP |
US18/275,070 US20240316697A1 (en) | 2021-02-15 | 2021-10-26 | Laser cutting method, laser cutting facility, and cold rolling method for steel strip, and method of manufacturing cold rolled steel strip |
CN202180092001.1A CN116783028A (zh) | 2021-02-15 | 2021-10-26 | 钢带的激光切断方法、激光切断设备、冷轧方法及冷轧钢带的制造方法 |
KR1020237027441A KR20230130719A (ko) | 2021-02-15 | 2021-10-26 | 강대의 레이저 절단 방법, 레이저 절단 설비, 냉간 압연 방법 및, 냉연 강대의 제조 방법 |
MX2023009514A MX2023009514A (es) | 2021-02-15 | 2021-10-26 | Metodo de corte por laser, instalacion de corte por laser y metodo de laminado en frio para tira de acero, y metodo de fabricacion de tira de acero laminado en frio. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-021847 | 2021-02-15 | ||
JP2021021847A JP2022124213A (ja) | 2021-02-15 | 2021-02-15 | 鋼帯のレーザー切断方法、レーザー切断設備、冷間圧延方法、及び冷延鋼帯の製造方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022172516A1 true WO2022172516A1 (ja) | 2022-08-18 |
Family
ID=82838595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2021/039401 WO2022172516A1 (ja) | 2021-02-15 | 2021-10-26 | 鋼帯のレーザー切断方法、レーザー切断設備、冷間圧延方法、及び冷延鋼帯の製造方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US20240316697A1 (ja) |
EP (1) | EP4252957A4 (ja) |
JP (1) | JP2022124213A (ja) |
KR (1) | KR20230130719A (ja) |
CN (1) | CN116783028A (ja) |
MX (1) | MX2023009514A (ja) |
TW (1) | TW202233343A (ja) |
WO (1) | WO2022172516A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI840157B (zh) * | 2023-03-13 | 2024-04-21 | 中國鋼鐵股份有限公司 | 具有不裁邊雷射銲道之產品的冷間軋延改良製程 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5876333U (ja) * | 1981-11-17 | 1983-05-23 | 三菱電機株式会社 | ストリツプの穴加工装置 |
JPS60115387A (ja) | 1983-11-25 | 1985-06-21 | Mitsubishi Electric Corp | レ−ザ−ビ−ムによる鋼板切り込み方法 |
JPH0576911A (ja) | 1991-09-17 | 1993-03-30 | Sumitomo Metal Ind Ltd | 鋼板のノツチング方法およびその装置 |
JP2003033805A (ja) * | 2001-07-23 | 2003-02-04 | Mitsubishi Electric Corp | ストリップ接続装置 |
JP2017080806A (ja) * | 2015-10-28 | 2017-05-18 | Jfeスチール株式会社 | 鋼帯のノッチング方法、冷間圧延方法および冷延鋼帯の製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56171499U (ja) * | 1980-05-23 | 1981-12-18 | ||
JPS62182283A (ja) | 1986-02-07 | 1987-08-10 | Nippon Parkerizing Co Ltd | ステンレス鋼板に塗装下地皮膜を形成するための表面処理方法 |
JP5764344B2 (ja) * | 2011-02-14 | 2015-08-19 | 本田技研工業株式会社 | 円筒状ワーク切断装置 |
JP5942800B2 (ja) * | 2012-11-13 | 2016-06-29 | 日本電気硝子株式会社 | 板ガラスの製造方法 |
-
2021
- 2021-02-15 JP JP2021021847A patent/JP2022124213A/ja active Pending
- 2021-10-26 KR KR1020237027441A patent/KR20230130719A/ko active Pending
- 2021-10-26 MX MX2023009514A patent/MX2023009514A/es unknown
- 2021-10-26 WO PCT/JP2021/039401 patent/WO2022172516A1/ja active Application Filing
- 2021-10-26 EP EP21925763.1A patent/EP4252957A4/en active Pending
- 2021-10-26 CN CN202180092001.1A patent/CN116783028A/zh active Pending
- 2021-10-26 US US18/275,070 patent/US20240316697A1/en active Pending
- 2021-11-03 TW TW110141007A patent/TW202233343A/zh unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5876333U (ja) * | 1981-11-17 | 1983-05-23 | 三菱電機株式会社 | ストリツプの穴加工装置 |
JPS60115387A (ja) | 1983-11-25 | 1985-06-21 | Mitsubishi Electric Corp | レ−ザ−ビ−ムによる鋼板切り込み方法 |
JPH0576911A (ja) | 1991-09-17 | 1993-03-30 | Sumitomo Metal Ind Ltd | 鋼板のノツチング方法およびその装置 |
JP2003033805A (ja) * | 2001-07-23 | 2003-02-04 | Mitsubishi Electric Corp | ストリップ接続装置 |
JP2017080806A (ja) * | 2015-10-28 | 2017-05-18 | Jfeスチール株式会社 | 鋼帯のノッチング方法、冷間圧延方法および冷延鋼帯の製造方法 |
JP6354793B2 (ja) | 2015-10-28 | 2018-07-11 | Jfeスチール株式会社 | 鋼帯のノッチング設備、鋼帯のノッチング方法、冷間圧延設備、冷間圧延方法および冷延鋼帯の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP4252957A4 |
Also Published As
Publication number | Publication date |
---|---|
EP4252957A1 (en) | 2023-10-04 |
KR20230130719A (ko) | 2023-09-12 |
TW202233343A (zh) | 2022-09-01 |
JP2022124213A (ja) | 2022-08-25 |
US20240316697A1 (en) | 2024-09-26 |
MX2023009514A (es) | 2023-08-24 |
CN116783028A (zh) | 2023-09-19 |
EP4252957A4 (en) | 2024-06-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6358307B2 (ja) | 鋼帯のノッチング方法、冷間圧延方法および冷延鋼帯の製造方法 | |
JP6164315B1 (ja) | 鋼帯のノッチング設備、鋼帯のノッチング方法、冷間圧延設備および冷間圧延方法 | |
JP6593609B2 (ja) | 鋼帯の冷間圧延方法及び冷間圧延設備 | |
WO2022172516A1 (ja) | 鋼帯のレーザー切断方法、レーザー切断設備、冷間圧延方法、及び冷延鋼帯の製造方法 | |
US20240367261A1 (en) | Laser welding method for si-containing steel sheets | |
WO2022172515A1 (ja) | 鋼帯のレーザー切断方法、レーザー切断設備、冷間圧延方法、及び冷延鋼帯の製造方法 | |
US20240424598A1 (en) | Electrical steel strip friction stir welding method and method of producing electrical steel strip | |
JP7662113B1 (ja) | 突合せ溶接方法 | |
JP7662114B1 (ja) | 突合せ溶接方法 | |
US20250065436A1 (en) | Electrical steel strip friction stir welding method and method of producing electrical steel strip | |
JP6996575B2 (ja) | 冷間圧延方法及び冷延鋼帯の製造方法 | |
JP5388342B2 (ja) | 鋼帯の重ね溶接方法 | |
CN113597475B (zh) | 钢板和构件 | |
WO2025070270A1 (ja) | 突合せ溶接方法 | |
WO2025070269A1 (ja) | 突合せ溶接方法 | |
JP2018089670A (ja) | 鋼帯のノッチング方法、冷間圧延方法および冷延鋼帯の製造方法 | |
JP2007283340A (ja) | 突合せ溶接金属板のプレス成型方法および成型金型 | |
WO2023042636A1 (ja) | Si含有鋼板のレーザ溶接方法 | |
JP3541659B2 (ja) | Fe−Ni合金材と軟鋼材からなる溶接構造物およびその製造方法 | |
JP3202569B2 (ja) | 熱間鋼材の連続熱間圧延方法 | |
JPH10291003A (ja) | 異幅接合板の圧延破断防止方法 | |
JPH01271072A (ja) | 銅または銅合金板条材の接合方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21925763 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202317046129 Country of ref document: IN |
|
ENP | Entry into the national phase |
Ref document number: 2021925763 Country of ref document: EP Effective date: 20230627 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 202180092001.1 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 18275070 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20237027441 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020237027441 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: MX/A/2023/009514 Country of ref document: MX |
|
NENP | Non-entry into the national phase |
Ref country code: DE |