JP4676421B2 - 連続製造工程のためのレーザー溶接方法 - Google Patents
連続製造工程のためのレーザー溶接方法 Download PDFInfo
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- JP4676421B2 JP4676421B2 JP2006349003A JP2006349003A JP4676421B2 JP 4676421 B2 JP4676421 B2 JP 4676421B2 JP 2006349003 A JP2006349003 A JP 2006349003A JP 2006349003 A JP2006349003 A JP 2006349003A JP 4676421 B2 JP4676421 B2 JP 4676421B2
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- 238000003466 welding Methods 0.000 title claims description 147
- 238000000034 method Methods 0.000 title claims description 83
- 238000004519 manufacturing process Methods 0.000 title claims description 29
- 239000000463 material Substances 0.000 claims description 93
- 238000010438 heat treatment Methods 0.000 claims description 64
- 229910000831 Steel Inorganic materials 0.000 claims description 41
- 239000010959 steel Substances 0.000 claims description 41
- 230000009466 transformation Effects 0.000 claims description 31
- 238000005554 pickling Methods 0.000 claims description 30
- 238000005096 rolling process Methods 0.000 claims description 26
- 229910000677 High-carbon steel Inorganic materials 0.000 claims description 24
- 238000005097 cold rolling Methods 0.000 claims description 17
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 10
- 229910000990 Ni alloy Inorganic materials 0.000 claims description 9
- 239000010962 carbon steel Substances 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 8
- 238000000137 annealing Methods 0.000 claims description 7
- 239000013256 coordination polymer Substances 0.000 claims description 5
- 229910000794 TRIP steel Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims 1
- 239000000109 continuous material Substances 0.000 claims 1
- 238000005406 washing Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 21
- 239000011651 chromium Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 15
- 229910052751 metal Inorganic materials 0.000 description 13
- 239000002184 metal Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 12
- 229910000734 martensite Inorganic materials 0.000 description 12
- 238000005304 joining Methods 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910001563 bainite Inorganic materials 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 4
- 239000000945 filler Substances 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 239000002436 steel type Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 229910001562 pearlite Inorganic materials 0.000 description 3
- 102220005308 rs33960931 Human genes 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 229910001566 austenite Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
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- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910004354 OF 20 W Inorganic materials 0.000 description 1
- 229910001035 Soft ferrite Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
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- 230000001131 transforming effect Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- B23K26/18—Working by laser beam, e.g. welding, cutting or boring using absorbing layers on the workpiece, e.g. for marking or protecting purposes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Description
上記圧延材の接触部分に対して溶接段階でC:0.1重量%以下、Cr:0−1.22重量%を含む溶接材料を使用してレーザー溶接する段階とを含む連続圧延のためのレーザー溶接方法を提供する。
本発明において“低温変態組織が発生する圧延材”とは、レーザー溶接方法で相互接合させ溶接部を形成した後、冷却時に溶接部の組織が低温変態組織に相変態する圧延材を意味する。低温変態組織とは、マルテンサイト、ベイナイトが含まれた組織を意味する。レーザー溶接後に低温変態組織が発生する圧延材には、高炭素鋼または高強度鋼素材がある。
本発明による溶接装置を用いて移動する圧延材を溶接する場合、圧延材も移動するが、これと共に溶接装置も移動することになる。この際、圧延材の移動方向と溶接装置の移動方向が同一だったり反対だったりすることが出来る。圧延材の移動方向と溶接装置の移動方向が同一の場合には、圧延材の移動速度が溶接装置の移動速度と同じかより速く移動するのが好ましい。
先ず、溶接部の化学組成を制御する方法について説明する。
この方法は、溶接部の溶融金属を殆ど形成する溶接材料を制御する方法である。溶接材料はフィラー供給機16から溶接部60へ供給され、基本的にCの含量が0.1%以下で、Crの含量が0−1.22%の溶接材料が好ましい。このような溶接材料としては、炭素鋼と高靭性材料のNi合金が挙げられる。炭素鋼系列がより安定的に溶接品質を確保できるので好ましい。
本発明において溶接部の熱処理は、溶接接合部の亀裂を防ぐための溶接前に実施する予熱処理と、溶接後に溶接接合部の硬化現象を緩和させるために実施する後熱処理がある。
最初の概念は、AC1以下で比較的長時間維持して溶接部のマルテンサイト組織をテンパード(tempered)マルテンサイトに変化させ、延性を確保するテンパリング(Tempering)処理方法である。
本実施例では、表1のような組成を有する高炭素鋼熱間圧延材(主成分Fe)を使用した。圧延材の厚さは2.0mmであった。このような圧延材は、最大出力12kWのCO2レーザー溶接機を用いて相互溶接した。
Claims (6)
- 圧延材を連続製造工程のためにレーザー溶接する方法において、
低温変態組織が発生する圧延材を相互に接触させる段階と、
上記圧延材の接触部分を600℃乃至800℃の範囲で予熱処理する段階と、
上記圧延材の接触部分に対して溶接段階でC:0.1重量%以下、Cr:0−1.22重量%を含む溶接材料を使用してレーザー溶接する段階と、
上記接触部分を1005℃乃至1100℃の範囲で加熱して後熱処理する段階を含む連続製造工程のためのレーザー溶接方法。 - 上記溶接材料は、炭素鋼またはNi合金から選択されることを特徴とする請求項1に記載の連続製造工程のためのレーザー溶接方法。
- 上記溶接材料は、線材または粉末または薄膜の何れの形態であることを特徴とする請求項1に記載の連続製造工程のためのレーザー溶接方法。
- 上記低温変態組織が発生する圧延材は、Cの含量が0.5重量%以上の高炭素鋼、DP鋼、TRIP鋼、CP鋼から選択されることを特徴とする請求項1に記載の連続製造工程のためのレーザー溶接方法。
- 上記高炭素鋼は、重量%としてC:0.5%以上、Si:0.1〜0.5%、Mn:0.3〜0.6%、P:0.05%以下、S:0.05%以下、Cu:0.5%以下、Ni:3%以下、Cr:0.05〜0.5%、Al:0.05%以下を含み、その他の不可避な不純物と残りのFeから組成されることを特徴とする請求項4に記載の連続製造工程のためのレーザー溶接方法。
- 上記連続製造工程は、酸洗いと冷延する工程(PCM、Pickling&Tandem Cold Rolling Mill)、酸洗いとオイル塗布する工程(POL、Pickling&Oiling Line)、焼き鈍しと酸洗いする工程(APL、Annealing&Pickling Line)、酸洗いする工程(PL、Pickling Line)、冷延する工程(TCM、Tandem Cold Rolling Mill)の何れか一つであることを特徴とする請求項1に記載の連続製造工程のためのレーザー溶接方法。
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KR1020050130102A KR100711453B1 (ko) | 2005-12-26 | 2005-12-26 | 연속압연을 위한 고탄소강의 용접방법 |
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JP2007175774A JP2007175774A (ja) | 2007-07-12 |
JP4676421B2 true JP4676421B2 (ja) | 2011-04-27 |
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JP (1) | JP4676421B2 (ja) |
KR (1) | KR100711453B1 (ja) |
CN (1) | CN1990155A (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009220179A (ja) * | 2008-02-19 | 2009-10-01 | Toshiba Corp | 二重管の接合方法 |
KR101134852B1 (ko) * | 2010-02-16 | 2012-04-13 | 현대하이스코 주식회사 | Jⅰs s45c 고탄소강판의 연속압연을 위한 용접 방법 |
CN102925904B (zh) * | 2012-11-30 | 2014-11-12 | 张家港浦项不锈钢有限公司 | 一种不锈钢宽厚板卷热退火酸洗方法 |
JP6736941B2 (ja) * | 2016-03-28 | 2020-08-05 | 中国電力株式会社 | 鋼部材の溶接方法、及び溶接材料 |
KR102010080B1 (ko) * | 2017-12-26 | 2019-10-21 | 주식회사 포스코 | 강판의 용접부의 열처리방법 |
EP3520945B1 (en) * | 2018-02-05 | 2021-01-13 | Ningbo Geely Automobile Research & Development Co. Ltd. | Laser brazing process |
CN109183029B (zh) * | 2018-11-16 | 2021-02-19 | 佛山市南海区科琎精密机械有限公司 | 一种激光熔覆工艺 |
CN113146157B (zh) * | 2021-04-15 | 2023-03-03 | 鞍钢股份有限公司 | 600MPa级冷轧双相钢热轧基板激光焊接的方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57106488A (en) * | 1980-12-22 | 1982-07-02 | Kawasaki Steel Corp | Laser welding method |
JPH05132719A (ja) * | 1991-11-13 | 1993-05-28 | Kawasaki Steel Corp | 高炭素鋼板あるいは鋼帯の溶接方法 |
JP2005048271A (ja) * | 2003-07-31 | 2005-02-24 | Jfe Steel Kk | 高炭素鋼材の溶接方法 |
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JP2834587B2 (ja) * | 1991-01-14 | 1998-12-09 | 新日本製鐵株式会社 | 高炭素鋼板の突き合わせレーザ溶接法 |
JPH08276207A (ja) * | 1995-04-03 | 1996-10-22 | Sumitomo Metal Ind Ltd | 連続圧延における鋼帯溶接部の強化方法 |
JP3461753B2 (ja) | 1999-04-16 | 2003-10-27 | 新日本製鐵株式会社 | 連続熱間圧延方法 |
KR100990721B1 (ko) * | 2003-10-07 | 2010-10-29 | 주식회사 포스코 | 연속압연에 의한 열간압연재의 냉각방법 및 그 장치 |
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2005
- 2005-12-26 KR KR1020050130102A patent/KR100711453B1/ko active IP Right Grant
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- 2006-12-26 JP JP2006349003A patent/JP4676421B2/ja active Active
- 2006-12-26 CN CNA2006101720043A patent/CN1990155A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57106488A (en) * | 1980-12-22 | 1982-07-02 | Kawasaki Steel Corp | Laser welding method |
JPH05132719A (ja) * | 1991-11-13 | 1993-05-28 | Kawasaki Steel Corp | 高炭素鋼板あるいは鋼帯の溶接方法 |
JP2005048271A (ja) * | 2003-07-31 | 2005-02-24 | Jfe Steel Kk | 高炭素鋼材の溶接方法 |
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Publication number | Publication date |
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KR100711453B1 (ko) | 2007-04-24 |
CN1990155A (zh) | 2007-07-04 |
JP2007175774A (ja) | 2007-07-12 |
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