KR100946148B1 - 황산 내식성이 우수한 내황산 부식강과 그 제조방법 - Google Patents
황산 내식성이 우수한 내황산 부식강과 그 제조방법 Download PDFInfo
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- KR100946148B1 KR100946148B1 KR1020070118472A KR20070118472A KR100946148B1 KR 100946148 B1 KR100946148 B1 KR 100946148B1 KR 1020070118472 A KR1020070118472 A KR 1020070118472A KR 20070118472 A KR20070118472 A KR 20070118472A KR 100946148 B1 KR100946148 B1 KR 100946148B1
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- sulfuric acid
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- acid corrosion
- corrosion resistance
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- 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
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
- C21D9/085—Cooling or quenching
-
- 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
- C22C38/30—Ferrous alloys, e.g. steel alloys containing chromium with cobalt
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
구분 | 화학성분(중량%) | ||||||||||||
C | Mn | Si | P | S | Cu | Co | Cr | Ni | Nb | V | Ti | (Mn+Cr+Nb)/Ni | |
A1 | 0.07 | 0.5 | 0.2 | 0.015 | 0.012 | 0.35 | 0.1 | 0.25 | 2 | ||||
A2 | 0.1 | 0.7 | 0.25 | 0.015 | 0.012 | 0.35 | 0.6 | 0.04 | - | ||||
A3 | 0.07 | 1.53 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.04 | 40 | ||
A4 | 0.07 | 1.53 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.02 | 40.4 | ||
A5 | 0.07 | 1.53 | 0.2 | 0.055 | 0.012 | 0.35 | 0.05 | 0.5 | 0.25 | 0.02 | 6.08 | ||
A6 | 0.07 | 1.53 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.25 | 0.04 | 6 | |||
A7 | 0.07 | 1.53 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.1 | 0.05 | 0.04 | 32.8 | ||
A8 | 0.07 | 1.53 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.04 | 40.8 | ||
A9 | 0.07 | 1.80 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.04 | 46.8 | ||
A10 | 0.07 | 0.8 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.03 | 26.6 | ||
A11 | 0.07 | 1.0 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.03 | 30.6 | ||
A12 | 0.07 | 1.2 | 0.2 | 0.015 | 0.012 | 0.35 | 0.05 | 0.5 | 0.05 | 0.03 | 34.6 |
구분 | 열연 권취 온도 | 평균 냉각 속도 (℃/s) | 기계적 성질: 상온 (Mpa, %) | 기계적 성질: 500℃ (Mpa, %) | 부식속도 | 비고 | ||||
YS | TS | El | YS | TS | El | Mg/cm2/hr | ||||
목표재질 | ≥400 | ≥500 | ≥15 | ≥250 | ≥310 | ≥15 | ≤40 | |||
A1 | 560 | 40 | 326 | 437 | 33.8 | 186 | 228 | 41.1 | 39.1 | 비교재1 |
660 | 25 | 295 | 414 | 40.9 | 167 | 216 | 41.7 | 39.6 | 비교재2 | |
A2 | 560 | 40 | 487 | 572 | 20.9 | 340 | 395 | 40.3 | 55.4 | 비교재3 |
660 | 25 | 401 | 497 | 24.4 | 215 | 287 | 46.0 | 56.8 | 비교재4 | |
A3 | 560 | 40 | 496 | 569 | 24.9 | 339 | 389 | 23.5 | 42.5 | 비교재5 |
660 | 25 | 323 | 432 | 32.2 | 195 | 307 | 27.0 | 48.2 | 비교재6 | |
A4 | 560 | 40 | 546 | 643 | 20.4 | 413 | 470 | 15.3 | 31.7 | 발명재1 |
660 | 25 | 407 | 504 | 25.3 | 269 | 368 | 28.0 | 36.1 | 발명재8 | |
A5 | 560 | 40 | 518 | 613 | 21.4 | 376 | 441 | 18.0 | 57.9 | 비교재7 |
660 | 25 | 426 | 527 | 29.0 | 267 | 327 | 32.8 | 76.3 | 비교재8 | |
A6 | 560 | 40 | 489 | 549 | 14.6 | 328 | 378 | 16.5 | 49.2 | 비교재9 |
660 | 25 | 319 | 421 | 34.6 | 183 | 282 | 32.8 | 51.9 | 비교재10 | |
A7 | 560 | 40 | 541 | 617 | 18.6 | 384 | 426 | 19.6 | 36.3 | 발명재2 |
660 | 25 | 431 | 511 | 27.6 | 288 | 378 | 26.1 | 39.4 | 발명재9 | |
A8 | 560 | 40 | 549 | 671 | 18.3 | 420 | 472 | 16.9 | 34.3 | 발명재3 |
660 | 25 | 441 | 529 | 25.5 | 257 | 358 | 28.0 | 38.2 | 발명재10 | |
A9 | 560 | 40 | 558 | 667 | 21.1 | 439 | 502 | 20.8 | 39.4 | 발명재4 |
660 | 25 | 434 | 529 | 24.7 | 291 | 398 | 26.7 | 39.6 | 발명재11 | |
A10 | 560 | 40 | 534.3 | 605.3 | 24.9 | 343.0 | 375.7 | 25.6 | 36.23 | 발명재5 |
660 | 25 | 446.2 | 517.9 | 25.3 | 279.3 | 307.3 | 21.5 | 34.19 | 발명재12 | |
A11 | 560 | 40 | 537.6 | 617.4 | 24.3 | 357.7 | 393.0 | 24.3 | 35.31 | 발명재6 |
660 | 25 | 456.4 | 532.8 | 32.4 | 269.0 | 319.3 | 33.3 | 32.07 | 발명재13 | |
A12 | 560 | 40 | 545.8 | 635.8 | 23.6 | 386.0 | 421.3 | 20.0 | 33.49 | 발명재7 |
660 | 25 | 485.7 | 553.6 | 32.6 | 262.7 | 317.0 | 33.9 | 31.78 | 발명재14 |
Claims (12)
- 중량%로, C: 0.15%이하(0%는 제외), Si: 1.0%이하(0%는 제외), Mn: 2.0%이하(0%는 제외), S: 0.03%이하, P: 0.02%이하, Al: 0.01~0.1%, Cu: 0.2~1.0%, Co: 0.02~0.1%, Cr: 0.1~1.0%, Ni: 0.1%이하(0%는 제외), Nb: 0.02~0.1%, 나머지 Fe와 기타 불가피한 불순물로 조성되는 황산 내식성이 우수한 내황산부식강.
- 중량%로, C: 0.15%이하(0%는 제외), Si: 1.0%이하(0%는 제외), Mn: 2.0%이하(0%는 제외), S: 0.03%이하, P: 0.02%이하, Al: 0.01~0.1%, Cu: 0.2~1.0%, Co: 0.02~0.1%, Cr: 0.1~1.0%, Ni: 0.1%이하(0%는 제외), Nb: 0.02~0.1%, 나머지 Fe와 기타 불가피한 불순물로 조성되고, 엑시쿨러 페라이트(accicular ferrite), 베이니틱 페라이트(bainitic ferrite), 베이나이트(bainite)의 저온조직에서 선택되는 적어도 1종이 포함되는 황산 내식성이 우수한 내황산부식강.
- 제 1항 또는 제 3항에 있어서, 상기 Mn의 함량은 1.51-2.0%임을 특징으로 하 는 황산 내식성이 우수한 내황산부식강.
- 제 1항 또는 제 3항에 있어서, 상기 Mn의 함량은 0.5-1.50%임을 특징으로 하는 황산 내식성이 우수한 내황산부식강.
- 제 1항 또는 제 3항에 있어서, 상기 내황산부식강에는 V이 0.02-0.1% 함량으로 포함되는 것을 특징으로 하는 황산 내식성이 우수한 내황산부식강.
- 제 3항에 있어서, 상기 엑시쿨러 페라이트(accicular ferrite), 베이니틱 페라이트(bainitic ferrite), 베이나이트(bainite)에서 선택되는 적어도 1종은 20%이상임을 특징으로 하는 황산 내식성이 우수한 내황산부식강.
- 중량%로, C: 0.15%이하(0%는 제외), Si: 1.0%이하(0%는 제외), Mn: 2.0%이하(0%는 제외), S: 0.03%이하, P: 0.02%이하, Al: 0.01~0.1%, Cu: 0.2~1.0%, Co: 0.02~0.1%, Cr: 0.1~1.0%, Ni: 0.1%이하(0%는 제외), Nb: 0.02~0.1%, 나머지 Fe와 기타 불가피한 불순물로 조성되는 강을 열간압연후 가속냉각하여 500~660℃의 온도로 권취하여 저온조직을 갖는 것을 포함하여 이루어지는 황산 내식성이 우수한 내황산부식강의 제조방법.
- 제 8항에 있어서, 상기 가속냉각은 30~50℃/s의 평균 속도로 냉각하는 것을 특징으로 하는 황산 내식성이 우수한 내황산부식강의 제조방법.
- 제 8항에 있어서, 상기 Mn의 함량은 1.51-2.0%임을 특징으로 하는 황산 내식성이 우수한 내황산부식강의 제조방법.
- 제 8항에 있어서, 상기 Mn의 함량은 0.5-1.50%임을 특징으로 하는 황산 내식성이 우수한 내황산부식강의 제조방법.
- 제 8항에 있어서, 상기 내황산부식강에는 V이 0.02-0.1% 함량으로 포함되는 것을 특징으로 하는 황산 내식성이 우수한 내황산부식강의 제조방법.
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KR20080046114A KR20080046114A (ko) | 2008-05-26 |
KR100946148B1 true KR100946148B1 (ko) | 2010-03-10 |
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JP (1) | JP5239089B2 (ko) |
KR (1) | KR100946148B1 (ko) |
CN (1) | CN101542006A (ko) |
WO (1) | WO2008062984A1 (ko) |
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US20150299829A1 (en) * | 2012-03-19 | 2015-10-22 | Nisshin Steel Co., Ltd. | Acid dew point corrosion-resistant steel and exhaust gas flow path constituent member |
KR101518578B1 (ko) * | 2013-09-10 | 2015-05-07 | 주식회사 포스코 | 내마모성 및 표면품질이 우수한 황산 및 염산 복합내식용 강판 및 그 제조방법 |
KR101536429B1 (ko) * | 2013-10-30 | 2015-07-13 | 주식회사 포스코 | 황산 및 염산 복합내식성이 우수한 열연강판 및 이의 제조방법 |
KR102045881B1 (ko) | 2016-09-28 | 2019-11-19 | 주식회사 포스코 | 강판 표면처리용 용액 조성물 및 이를 이용하여 표면처리된 강판 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000017382A (ja) | 1998-07-03 | 2000-01-18 | Nippon Steel Corp | 耐硫酸腐食性に優れた鋼 |
JP2001107196A (ja) | 1999-10-07 | 2001-04-17 | Sumitomo Metal Ind Ltd | 耐溶接割れ性と耐硫酸腐食性に優れたオーステナイト鋼溶接継手およびその溶接材料 |
WO2002063056A1 (fr) | 2001-02-02 | 2002-08-15 | Nippon Steel Corporation | Acier d"excellente resistance a la corrosion au point de rosee de l"acide sulfurique |
JP2003213367A (ja) | 2001-11-19 | 2003-07-30 | Nippon Steel Corp | 耐塩酸腐食性および耐硫酸腐食性に優れた低合金鋼およびその溶接継手 |
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JPH06184636A (ja) * | 1992-12-18 | 1994-07-05 | Nippon Steel Corp | 溶接性の優れた高強度高靭性シームレス鋼管の製造法 |
JPH07179987A (ja) * | 1993-12-22 | 1995-07-18 | Nkk Corp | 耐水素誘起割れ性および耐硫化物応力腐食割れ性の優れた高強度鋼 |
JP3704306B2 (ja) * | 2001-12-28 | 2005-10-12 | 新日本製鐵株式会社 | 溶接性、穴拡げ性および耐食性に優れた溶融亜鉛めっき高強度鋼板およびその製造方法 |
JP4291711B2 (ja) * | 2004-03-03 | 2009-07-08 | 新日本製鐵株式会社 | 焼付け硬化性を有する高バーリング熱延鋼板およびその製造方法 |
JP5047180B2 (ja) * | 2005-10-25 | 2012-10-10 | ポスコ | 耐食性に優れた自動車マフラー用鋼板及びその製造方法 |
JP4444924B2 (ja) * | 2006-01-25 | 2010-03-31 | 株式会社神戸製鋼所 | 耐食性と母材靭性に優れた船舶用高張力鋼材 |
JP4823930B2 (ja) * | 2006-02-10 | 2011-11-24 | 新日本製鐵株式会社 | 耐酸腐食鋼 |
JP5186769B2 (ja) * | 2006-02-13 | 2013-04-24 | 新日鐵住金株式会社 | 耐硫酸露点腐食鋼 |
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- 2007-11-20 KR KR1020070118472A patent/KR100946148B1/ko active IP Right Grant
- 2007-11-20 JP JP2009538322A patent/JP5239089B2/ja active Active
- 2007-11-20 CN CNA2007800431759A patent/CN101542006A/zh active Pending
- 2007-11-20 WO PCT/KR2007/005824 patent/WO2008062984A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000017382A (ja) | 1998-07-03 | 2000-01-18 | Nippon Steel Corp | 耐硫酸腐食性に優れた鋼 |
JP2001107196A (ja) | 1999-10-07 | 2001-04-17 | Sumitomo Metal Ind Ltd | 耐溶接割れ性と耐硫酸腐食性に優れたオーステナイト鋼溶接継手およびその溶接材料 |
WO2002063056A1 (fr) | 2001-02-02 | 2002-08-15 | Nippon Steel Corporation | Acier d"excellente resistance a la corrosion au point de rosee de l"acide sulfurique |
JP2003213367A (ja) | 2001-11-19 | 2003-07-30 | Nippon Steel Corp | 耐塩酸腐食性および耐硫酸腐食性に優れた低合金鋼およびその溶接継手 |
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KR20080046114A (ko) | 2008-05-26 |
JP5239089B2 (ja) | 2013-07-17 |
JP2010510391A (ja) | 2010-04-02 |
CN101542006A (zh) | 2009-09-23 |
WO2008062984A1 (en) | 2008-05-29 |
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