WO2023121133A1 - Tôle d'acier pour tuyau d'acier de système d'échappement ayant une résistance à la corrosion et une formabilité améliorées, et son procédé de production - Google Patents
Tôle d'acier pour tuyau d'acier de système d'échappement ayant une résistance à la corrosion et une formabilité améliorées, et son procédé de production Download PDFInfo
- Publication number
- WO2023121133A1 WO2023121133A1 PCT/KR2022/020359 KR2022020359W WO2023121133A1 WO 2023121133 A1 WO2023121133 A1 WO 2023121133A1 KR 2022020359 W KR2022020359 W KR 2022020359W WO 2023121133 A1 WO2023121133 A1 WO 2023121133A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- less
- corrosion resistance
- formability
- steel sheet
- content
- Prior art date
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 98
- 239000010959 steel Substances 0.000 title claims abstract description 98
- 238000005260 corrosion Methods 0.000 title claims abstract description 48
- 230000007797 corrosion Effects 0.000 title claims abstract description 48
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 239000012535 impurity Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 26
- 229910052782 aluminium Inorganic materials 0.000 claims description 25
- 229910052710 silicon Inorganic materials 0.000 claims description 25
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 229910052748 manganese Inorganic materials 0.000 claims description 17
- 229910052759 nickel Inorganic materials 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000003303 reheating Methods 0.000 claims description 11
- 238000000137 annealing Methods 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 238000005097 cold rolling Methods 0.000 claims description 5
- 238000005098 hot rolling Methods 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 11
- 239000000956 alloy Substances 0.000 abstract description 11
- 239000011651 chromium Substances 0.000 description 25
- 239000011572 manganese Substances 0.000 description 25
- 230000000052 comparative effect Effects 0.000 description 19
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 239000010949 copper Substances 0.000 description 17
- 239000010936 titanium Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000734 martensite Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000001036 glow-discharge mass spectrometry Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 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
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
-
- 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
-
- 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
- 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
- C21D8/0236—Cold 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
- 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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
-
- 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
-
- 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
-
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
-
- 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
Definitions
- the content of N may be 0.001% or more and 0.02% or less.
- the remaining component of the present invention is iron (Fe).
- Fe iron
- the steel sheet for steel pipes having improved corrosion resistance and formability according to an embodiment of the present invention may have a coating index of 30% or more represented by Equation (2) below.
- a hot-rolled material may be produced by hot-rolling the reheated slab, and a cold-rolled material may be manufactured by cold-rolling the hot-rolled material.
- Example 1 0.006 0.85 0.30 0.03 0.02 9.5 0.11 0.19 0.007
- Example 2 0.006 0.48 0.30 0.03 0.01 9.5 0.08 0.20 0.006
- Example 3 0.007 0.78 0.28 0.02 0.15 8.8 0.04 0.17 0.006
- Example 4 0.006 0.92 0.30 0.20 0.03 9.1 0.03 0.19 0.006
- Example 5 0.006 0.80 0.30 0.25 0.10 9.1 0.15 0.15 0.006
- Comparative Example 1 0.005 0.50 0.25 0.01 0.03 11.2 0.03 0.20 0.006
- Comparative Example 2 0.006 0.48 0.45 0.03 0.35 0.0 0.01 0.21 0.009
- Comparative Example 3 0.006 0.22 0.30 0.03 0.25 9.5 0.10 0.19 0.008
- Comparative Example 4 0.008 0.21 0.31 0.03 0.03 8.8 0.10 0.20 0.003 Comparative Example 5 0.008 0.52 0.27 0.06 0.15 9.1 0.01 0.22 0.004 Comparative Example 6 0.006 0.
- Equation (1) values, Equation (2) values, Ericsson values, and pit potentials are shown in Table 2 below. Equation (1) values are expressed by calculating Equation (1) below.
- Ericsson value was measured as follows. After inserting the specimen between the upper and lower dies, the outer periphery of the specimen was fixed with a force of 20 kN. Thereafter, deformation was applied to the specimen at a speed of 5 to 20 mm/min using a spherical punch having a diameter of 20 mm. Thereafter, a punch was inserted until the specimen was fractured, and then the strain height of the specimen was measured at fracture. The higher the Ericsson value, the better the moldability.
- Examples 1 to 5 satisfied the alloy composition, component range, and Equation (1) and Equation (2) values presented in the present invention. Accordingly, Examples 1 to 5 satisfied the Ericsson value of 4.4 mm or more and the pitting potential of 70 mV or more. That is, Examples 1 to 5 were excellent in both corrosion resistance and formability. However, Comparative Examples 1 to 6 did not satisfy the value of 2 or more in the equation (1), and thus did not satisfy the Ericsson value of 4.4 mm or more. But't That is, Comparative Examples 1 to 6 were inferior in formability.
- FIG. 1 is a photograph of the Ericsson test results of Example 2
- FIG. 2 is a photograph of the Ericsson test results of Comparative Example 2.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
La présente spécification divulgue : une tôle d'acier pour un tuyau d'acier de système d'échappement, la tôle d'acier étant économique et améliorée en termes de résistance à la corrosion et de formabilité en contrôlant les composants d'alliage et le procédé de production ; et un procédé de production de la tôle d'acier. La tôle d'acier qui est destinée à un tuyau en acier et présente une résistance à la corrosion et une formabilité améliorées selon un mode de réalisation de la présente invention peut inclure de 0,001 à 0,02 % en poids de C, de 0,4 à 1,0 % en poids de Si, de 0,1 à 0,5 % en poids de Mn, de 8,0 à 10,0 % en poids de Cr, de 0 à 0,3 % en poids de Ni (à l'exclusion de 0), de 0 à 0,3 % en poids de Cu (à l'exclusion de 0), de 0,02 à 0,2 % en poids d'Al, de 0,001 à 0,02 % en poids de N, et de 0,05 à 0,4 % en poids de Ti, le reste incluant du Fe et des impuretés inévitables.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0184092 | 2021-12-21 | ||
| KR1020210184092A KR20230094726A (ko) | 2021-12-21 | 2021-12-21 | 내식성과 성형성이 향상된 배기계 강관용 강판 및 그 제조방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023121133A1 true WO2023121133A1 (fr) | 2023-06-29 |
Family
ID=86903306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/020359 WO2023121133A1 (fr) | 2021-12-21 | 2022-12-14 | Tôle d'acier pour tuyau d'acier de système d'échappement ayant une résistance à la corrosion et une formabilité améliorées, et son procédé de production |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR20230094726A (fr) |
| WO (1) | WO2023121133A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002285300A (ja) * | 2001-01-18 | 2002-10-03 | Kawasaki Steel Corp | フェライト系ステンレス鋼板およびその製造方法 |
| JP2007270168A (ja) * | 2006-03-30 | 2007-10-18 | Jfe Steel Kk | Ｃｒ含有フェライト系鋼板の製造方法 |
| KR20100058851A (ko) * | 2008-11-25 | 2010-06-04 | 주식회사 포스코 | 성형성 및 리징성이 개선된 페라이트계 스테인리스 강의 제조방법 |
| KR20150110762A (ko) * | 2013-03-27 | 2015-10-02 | 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 | 연마 후의 표면 내식성이 우수한 페라이트계 스테인리스강 및 그 제조 방법 |
| KR20210079082A (ko) * | 2019-12-19 | 2021-06-29 | 주식회사 포스코 | 고온 특성 및 성형성이 향상된 저Cr 페라이트계 스테인리스강 및 그 제조방법 |
-
2021
- 2021-12-21 KR KR1020210184092A patent/KR20230094726A/ko unknown
-
2022
- 2022-12-14 WO PCT/KR2022/020359 patent/WO2023121133A1/fr active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002285300A (ja) * | 2001-01-18 | 2002-10-03 | Kawasaki Steel Corp | フェライト系ステンレス鋼板およびその製造方法 |
| JP2007270168A (ja) * | 2006-03-30 | 2007-10-18 | Jfe Steel Kk | Ｃｒ含有フェライト系鋼板の製造方法 |
| KR20100058851A (ko) * | 2008-11-25 | 2010-06-04 | 주식회사 포스코 | 성형성 및 리징성이 개선된 페라이트계 스테인리스 강의 제조방법 |
| KR20150110762A (ko) * | 2013-03-27 | 2015-10-02 | 닛폰 스틸 앤드 스미킨 스테인레스 스틸 코포레이션 | 연마 후의 표면 내식성이 우수한 페라이트계 스테인리스강 및 그 제조 방법 |
| KR20210079082A (ko) * | 2019-12-19 | 2021-06-29 | 주식회사 포스코 | 고온 특성 및 성형성이 향상된 저Cr 페라이트계 스테인리스강 및 그 제조방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230094726A (ko) | 2023-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019117430A1 (fr) | Acier inoxydable ferritique ayant une excellente résistance à l'oxydation à haute température et procédé de fabrication associé | |
| WO2018110779A1 (fr) | Tôle d'acier faiblement allié ayant une résistance et une ductilité excellentes | |
| WO2021100995A1 (fr) | Tôle d'acier ayant une résistance élevée et une grande aptitude au formage et son procédé de fabrication | |
| WO2020060051A1 (fr) | Tôle d'acier inoxydable ferritique laminée à chaud et non recuite ayant une excellente solidité au choc, et son procédé de fabrication | |
| WO2018117477A1 (fr) | Acier inoxydable duplex ayant d'excellentes caractéristiques de résistance à la corrosion et d'usinabilité et procédé de fabrication de celui-ci | |
| WO2017052005A1 (fr) | Acier inoxydable ferritique et son procédé de fabrication | |
| WO2019059660A1 (fr) | Tôle d'acier faiblement allié possédant une résistance et une ductilité excellentes et procédé de fabrication s'y rapportant | |
| WO2021010599A2 (fr) | Acier inoxydable austénitique ayant une résistance améliorée et procédé de fabrication associé | |
| WO2023121133A1 (fr) | Tôle d'acier pour tuyau d'acier de système d'échappement ayant une résistance à la corrosion et une formabilité améliorées, et son procédé de production | |
| WO2016064226A1 (fr) | Tôle d'acier inoxydable ferritique à haute résistance et ductilité élevée et son procédé de production | |
| WO2019117432A1 (fr) | Acier inoxydable à base de ferrite à excellente ténacité à l'impact, et son procédé de production | |
| WO2019124729A1 (fr) | Acier inoxydable ferritique utilitaire possédant une excellente aptitude au façonnage à chaud et son procédé de fabrication | |
| WO2022131504A1 (fr) | Acier inoxydable austénitique doté d'une résistance au ramollissement à haute température améliorée | |
| WO2010074458A2 (fr) | Tôle d'acier laminée à froid de haute résistance présentant une aptitude à l'emboutissage profond améliorée et un rapport d'élasticité élevé, tôle d'acier galvanisée utilisant celle-ci, tôle d'acier allié galvanisée et procédé de fabrication correspondant | |
| WO2015099214A1 (fr) | Tôle d'acier trempé présentant une excellente résistance et ductilité et procédé pour sa fabrication | |
| WO2021125564A1 (fr) | Acier inoxydable ferritique à haute résistance pour collier de serrage et son procédé de fabrication | |
| WO2021125793A1 (fr) | Fil-machine pour acier de qualité de frappe à froid à haute résistance présentant une excellente résistance à la fragilisation par l'hydrogène, et procédé de fabrication associé | |
| WO2017111436A1 (fr) | Acier inoxydable ferritique pour système d'échappement d'automobile, ayant une résistance à la corrosion par piqûre et une résistance à la corrosion par eau de condensation améliorées, et son procédé de fabrication | |
| WO2020085687A1 (fr) | Acier inoxydable ferritique à haute résistance pour collier de serrage et son procédé de production | |
| WO2019124690A1 (fr) | Acier inoxydable ferritique ayant une aptitude au façonnage améliorée pour la dilatation de tubes et son procédé de fabrication | |
| WO2022270814A1 (fr) | Acier inoxydable austénitique et son procédé de fabrication | |
| WO2020122320A1 (fr) | Acier inoxydable ferritique à faible teneur en cr présentant une aptitude au formage et des propriétés à température élevée excellentes, et son procédé de fabrication | |
| WO2024135997A1 (fr) | Acier inoxydable ferritique pour applications de construction et son procédé de production | |
| WO2019039774A1 (fr) | Acier inoxydable ferritique ayant une ténacité à l'impact à basse température améliorée et son procédé de production | |
| WO2017111437A1 (fr) | Acier inoxydable duplex pauvre et son procédé de fabrication |
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: 22911766 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2401004083 Country of ref document: TH |