WO2023075283A1 - 클래드 판재 가공성이 우수한 페라이트계 스테인리스강 및 제조방법 - Google Patents
클래드 판재 가공성이 우수한 페라이트계 스테인리스강 및 제조방법 Download PDFInfo
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- WO2023075283A1 WO2023075283A1 PCT/KR2022/015951 KR2022015951W WO2023075283A1 WO 2023075283 A1 WO2023075283 A1 WO 2023075283A1 KR 2022015951 W KR2022015951 W KR 2022015951W WO 2023075283 A1 WO2023075283 A1 WO 2023075283A1
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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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
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- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0236—Cold rolling
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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
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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 of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties of ferrous metals or ferrous alloys by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties of ferrous metals or ferrous alloys 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
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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
- 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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- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
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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
- C22C38/02—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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
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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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
Definitions
- the present invention relates to a ferritic stainless steel with excellent clad sheet workability and a manufacturing method, and is a technique for improving the material and workability by controlling alloy components.
- Ferritic stainless steel is widely used in home appliances such as washing machines and refrigerators and kitchen utensils such as pots and rice cookers due to its low price and beautiful surface quality compared to austenitic stainless steel.
- ferritic stainless steel is widely applied to pots, rice cookers, etc. due to the harmfulness of existing Al, luxurious surfaces, and high functional requirements such as induction heaters.
- it is heavier than conventional aluminum and has low thermal conductivity, which is disadvantageous for cooking food. Therefore, in order to improve this point, there are increasing cases of making pots or rice cookers by clad with stainless steel and Al or Cu.
- the present invention is to solve the above problems, and an object of the present invention is to improve the material and clad sheet workability through optimization of steel components.
- C 0.0005 to 0.02%, N: 0.005 to 0.02%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.001 to 0.05%, Cr: 10.0 to 25.0%, Nb: 0.01 to 0.5%, Ti: 0.01 to 0.5%, including the remaining Fe and unavoidable impurities, and the average R-bar value for each direction is 1.5 or more (where the average R-bar value is is (R 0 + 2R 45 + R 90 )/4), and the height of the curve after processing the clad plate is 25 ⁇ m or less.
- C 0.0005 to 0.02%, N: 0.005 to 0.02%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: Preparing a slab containing 0.001 to 0.05%, Cr: 10.0 to 25.0%, Nb: 0.01 to 0.5%, Ti: 0.01 to 0.5%, the remainder Fe and unavoidable impurities through a continuous casting process; Hot-rolling the prepared slab at 800 to 1250 ° C.; Performing hot rolling annealing in a temperature range of 900 to 1050 ° C. and then performing cold rolling at a reduction ratio of 70% or more; and performing final cold annealing in less than 1 hour at a temperature range of 800 to 950 ° C.
- FIG. 1 is a photograph of the occurrence of bending and cross-sectional organization after pot molding of a clad plate.
- Figure 2 is a graph showing the bending height according to the difference in hardness between stainless steel and Al.
- C 0.0005 to 0.02%, N: 0.005 to 0.02%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.001 to 0.05%, Cr: 10.0 to 25.0%, Nb: 0.01 to 0.5%, Ti: 0.01 to 0.5%, including the remaining Fe and unavoidable impurities, and the average R-bar value for each direction is 1.5 or more (where the average R-bar value is is (R 0 + 2R 45 + R 90 )/4), and the height of the curve after processing the clad plate is 25 ⁇ m or less.
- C 0.0005 to 0.02%, N: 0.005 to 0.02%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.001 to 0.05%, Cr: 10.0 to 25.0%, Nb: 0.01 to 0.5%, Ti: 0.01 to 0.5%, including the remaining Fe and unavoidable impurities, and the average R-bar value for each direction is 1.5 or more (where the average R-bar value is means (R 0 + 2R 45 + R 90 )/4), and the height of the curve after processing the clad plate is 25 ⁇ m or less.
- the amount of carbon (C) is 0.0005% or more and 0.02% or less. If the amount of carbon (C) is less than 0.0005%, the refining price for making high-purity products becomes expensive, and if it exceeds 0.02%, the elongation and corrosion resistance of the material increase due to the increase in impurities.
- the amount of nitrogen (N) is 0.005% or more and 0.02% or less. If the amount of nitrogen (N) is less than 0.005%, TiN crystallization is lowered and the equiaxed crystallization rate of the slab is lowered, and if it exceeds 0.02%, impurities in the material increase, resulting in poor elongation and corrosion resistance.
- the amount of silicon (Si) is 0.01% or more and 1.0% or less. If the amount of silicon (Si) is less than 0.01%, the refining price for making high-purity products becomes expensive, and if it exceeds 1.0%, the hardness of the material increases excessively, resulting in reduced workability and bending.
- the amount of chromium (Cr) is 10.0% or more and 25.0% or less. If the amount of chromium (Cr) is less than 10.0%, there is a problem of poor corrosion resistance and strength, and if it exceeds 25.0%, there is a problem that the burden of price increase increases.
- the amount of manganese (Mn) is 0.01% or more and 1.0% or less. If the amount of manganese (Mn) is less than 0.01%, there is a problem in that the refining price increases, and if it exceeds 1.0%, the elongation rate decreases due to the increase in impurities in the material.
- the amount of phosphorus (P) is 0.001% or more and 0.05% or less.
- Phosphorus (P) is an impurity inevitably contained in steel, and since it is an element that causes intergranular corrosion during pickling or inhibits hot workability, it is desirable to control its content as low as possible.
- the refining price increases, and when it exceeds 0.05%, the elongation and strain hardening index decrease due to the increase in impurities.
- the amount of niobium (Nb) is 0.01% or more and 0.5% or less. If the amount of niobium (Nb) is less than 0.01%, as shown in Comparative Examples 1 to 4 below, there is a problem in that the crystal grains become too large and the R value decreases, and if the amount exceeds 0.5%, workability decreases and cost increases.
- the amount of titanium (Ti) is 0.01% or more and 0.5% or less. If the amount of titanium (Ti) is less than 0.01%, as shown in Comparative Examples 1 to 4 below, there is a problem in that the crystal grains become too large and the R value decreases, and if the amount exceeds 0.5%, defects due to Ti-based inclusions increase. .
- the cross-sectional hardness difference between the two materials may be 50 to 150 Hv. If the hardness difference is less than 50Hv, there is a problem of frequent cracks in clad plate processing, and if the hardness difference exceeds 150Hv, even if the R-bar value is 1.5 or more, local necking occurs in ferritic stainless steel due to non-uniform deformation of Al during clad plate processing. is generated periodically to form curves on the surface.
- C 0.0005 to 0.02%, N: 0.005 to 0.02%, Si: 0.01 to 1.0%, Mn: 0.01 to 1.0%, P: 0.001 to 0.05%, Cr: 10.0 to 25.0%, Nb: 0.01 to 0.5%, Ti: 0.01 to 0.5%, preparing a slab containing the remaining Fe and unavoidable impurities through a continuous casting process;
- hot rolling in the range of 800 to 1250 ° C
- hot rolling annealing was performed in the temperature range of 900 to 1050 ° C, and then cold rolling at a reduction rate of 70% or more.
- final cold annealing was performed in the temperature range of 800 to 950 ° C for less than 1 hour to prepare stainless steels of Examples 1 to 3 and Comparative Examples 1 to 7 in Table 2 below, and R-bar, hardness difference and bending height It was measured, and it is shown in Table 2 below.
- the R-bar value (R 0 + 2R 45 + R 90 )/4) was calculated from the R values measured for each direction.
- the difference in hardness the difference in Vickers hardness of the cross section of the two materials after bonding with Al was obtained, and the Vickers hardness was measured using an HV-114 Vickers hardness tester manufactured by Mitutoyo.
- Examples 1 to 3 satisfy the alloy composition range and manufacturing conditions of the present invention, thereby securing an R-bar value of 1.5 or more and controlling the hardness difference to 50 to 150 Hv to produce cladding with excellent processability of 25 ⁇ m or less. I was able to make sheet metal.
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- 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)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
| 강종 | C | N | Si | Mn | P | Cr | Nb | Ti | 구분 |
| A | 0.0151 | 0.0114 | 0.3 | 0.4 | 0.02 | 18.1 | 0.002 | 0.004 | 비교예의 강종 |
| B | 0.0104 | 0.0083 | 0.2 | 0.5 | 0.03 | 17.8 | 0.003 | 0.002 | |
| E | 0.0092 | 0.0090 | 0.2 | 0.4 | 0.02 | 22.4 | 0.04 | 0.21 | 실시예의 강종 |
| F | 0.0096 | 0.0110 | 0.3 | 0.5 | 0.02 | 18.2 | 0.30 | 0.05 | |
| G | 0.0134 | 0.0097 | 0.3 | 0.5 | 0.02 | 16.4 | 0.12 | 0.18 |
| 구분 | 강종 | R-bar | 경도 차이 (STS-Al, Hv) |
굴곡 높이 (㎛) |
| 실시예 1 | E | 1.92 | 95 | 12 |
| 실시예 2 | F | 1.75 | 138 | 21 |
| 실시예 3 | G | 1.98 | 117 | 15 |
| 비교예 1 | A | 1.24 | 124 | 27 |
| 비교예 2 | B | 1.35 | 132 | 31 |
| 비교예 3 | A | 1.07 | 157 | 36 |
| 비교예 4 | B | 1.18 | 166 | 42 |
| 비교예 5 | E | 1.84 | 162 | 28 |
| 비교예 6 | F | 1.72 | 185 | 39 |
| 비교예 7 | G | 1.92 | 171 | 34 |
Claims (3)
- 중량%로, C: 0.0005 내지 0.02%, N: 0.005 내지 0.02%, Si: 0.01 내지 1.0%, Mn: 0.01 내지 1.0%, P: 0.001 내지 0.05%, Cr: 10.0 내지 25.0%, Nb: 0.01 내지 0.5%, Ti: 0.01 내지 0.5%, 나머지 Fe 및 불가피한 불순물을 포함하고, 방향별 R값의 평균 R-bar 값이 1.5 이상이며(여기서 평균 R-bar값은 (R0 + 2R45 + R90)/4을 의미함), 클래드 판재 가공 후 굴곡의 높이가 25㎛ 이하인 클래드 판재 가공성이 우수한 페라이트계 스테인리스 강재.
- 청구항 1에 있어서, 상기 클래드 접합 후 Al과 경도 차이가 50~150Hv인 클래드 판재 가공성이 우수한 페라이트계 스테인리스 강재.
- 중량%로, C: 0.0005 내지 0.02%, N: 0.005 내지 0.02%, Si: 0.01 내지 1.0%, Mn: 0.01 내지 1.0%, P: 0.001 내지 0.05%, Cr: 10.0 내지 25.0%, Nb: 0.01 내지 0.5%, Ti: 0.01 내지 0.5%, 나머지 Fe 및 불가피한 불순물을 포함하는 슬라브를 연속주조 공정을 통해 제조하는 단계;제조된 슬라브를 800~1250℃ 구간에서 열간압연하는 단계;900~1050℃ 온도 범위에서 열연 소둔을 행한 후 70% 이상의 압하율로 냉연을 하는 단계; 및800~950℃ 온도 범위에서 1시간 미만으로 최종 냉연소둔을 하는 단계를 포함하는 클래드 판재 가공성이 우수한 페라이트계 스테인리스 강재의 제조방법.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US18/698,704 US20240417832A1 (en) | 2021-10-25 | 2022-10-19 | Ferritic stainless steel with excellent clad sheet workability, and manufacturing method therefor |
| EP22887479.8A EP4400624A4 (en) | 2021-10-25 | 2022-10-19 | Ferritic stainless steel exhibiting excellent suitability for shaping clad sheet metal, and its manufacturing process |
| CN202280070630.9A CN118140002A (zh) | 2021-10-25 | 2022-10-19 | 复合板材加工性优异的铁素体系不锈钢及其制造方法 |
| JP2024523511A JP2024537909A (ja) | 2021-10-25 | 2022-10-19 | クラッド板材加工性に優れたフェライト系ステンレス鋼材及びその製造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210143016A KR20230059023A (ko) | 2021-10-25 | 2021-10-25 | 클래드 판재 가공성이 우수한 페라이트계 스테인리스강 및 제조방법 |
| KR10-2021-0143016 | 2021-10-25 |
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| Publication Number | Publication Date |
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| WO2023075283A1 true WO2023075283A1 (ko) | 2023-05-04 |
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| PCT/KR2022/015951 Ceased WO2023075283A1 (ko) | 2021-10-25 | 2022-10-19 | 클래드 판재 가공성이 우수한 페라이트계 스테인리스강 및 제조방법 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240417832A1 (ko) |
| EP (1) | EP4400624A4 (ko) |
| JP (1) | JP2024537909A (ko) |
| KR (1) | KR20230059023A (ko) |
| CN (1) | CN118140002A (ko) |
| WO (1) | WO2023075283A1 (ko) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101695758B1 (ko) * | 2015-12-23 | 2017-01-13 | 주식회사 포스코 | 가공성이 향상된 페라이트계 스테인리스강 및 이의 제조 방법 |
| CN109136735A (zh) * | 2017-06-27 | 2019-01-04 | 宝钢不锈钢有限公司 | 具有良好成形性能的铁素体不锈钢及其制造方法 |
| JP2019123892A (ja) * | 2018-01-12 | 2019-07-25 | 日鉄日新製鋼株式会社 | フェライト系ステンレス鋼板およびその製造方法 |
| JP2020164956A (ja) * | 2019-03-29 | 2020-10-08 | 日鉄ステンレス株式会社 | フェライト系ステンレス鋼板およびその製造方法 |
| WO2021065738A1 (ja) * | 2019-10-02 | 2021-04-08 | 日鉄ステンレス株式会社 | フェライト系ステンレス鋼板およびその製造方法ならびにフェライト系ステンレス部材 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE40950E1 (en) * | 1999-03-30 | 2009-11-10 | Jfe Steel Corporation | Ferritic stainless steel plate |
| KR100762151B1 (ko) * | 2001-10-31 | 2007-10-01 | 제이에프이 스틸 가부시키가이샤 | 딥드로잉성 및 내이차가공취성이 우수한 페라이트계스테인리스강판 및 그 제조방법 |
| JP5002991B2 (ja) * | 2006-03-20 | 2012-08-15 | Jfeスチール株式会社 | 耐面歪み性及び表面性状に優れたフェライト系ステンレス冷延鋼板の製造方法及び被膜鋼板 |
| KR101485639B1 (ko) * | 2012-12-20 | 2015-01-22 | 주식회사 포스코 | 내리징성이 우수한 페라이트계 스테인리스강 및 그 제조 방법 |
| KR101964318B1 (ko) * | 2017-08-31 | 2019-04-01 | 주식회사포스코 | 방열성 및 가공성이 향상된 페라이트계 스테인리스강 및 이의 제조 방법 |
| CN108315648B (zh) * | 2018-02-13 | 2020-04-14 | 济南大学 | 一种载有scr处理装置的汽车排气系统后级消声器用铁素体不锈钢及制备方法 |
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2021
- 2021-10-25 KR KR1020210143016A patent/KR20230059023A/ko active Pending
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2022
- 2022-10-19 EP EP22887479.8A patent/EP4400624A4/en active Pending
- 2022-10-19 CN CN202280070630.9A patent/CN118140002A/zh active Pending
- 2022-10-19 US US18/698,704 patent/US20240417832A1/en active Pending
- 2022-10-19 WO PCT/KR2022/015951 patent/WO2023075283A1/ko not_active Ceased
- 2022-10-19 JP JP2024523511A patent/JP2024537909A/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101695758B1 (ko) * | 2015-12-23 | 2017-01-13 | 주식회사 포스코 | 가공성이 향상된 페라이트계 스테인리스강 및 이의 제조 방법 |
| CN109136735A (zh) * | 2017-06-27 | 2019-01-04 | 宝钢不锈钢有限公司 | 具有良好成形性能的铁素体不锈钢及其制造方法 |
| JP2019123892A (ja) * | 2018-01-12 | 2019-07-25 | 日鉄日新製鋼株式会社 | フェライト系ステンレス鋼板およびその製造方法 |
| JP2020164956A (ja) * | 2019-03-29 | 2020-10-08 | 日鉄ステンレス株式会社 | フェライト系ステンレス鋼板およびその製造方法 |
| WO2021065738A1 (ja) * | 2019-10-02 | 2021-04-08 | 日鉄ステンレス株式会社 | フェライト系ステンレス鋼板およびその製造方法ならびにフェライト系ステンレス部材 |
Non-Patent Citations (1)
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Also Published As
| Publication number | Publication date |
|---|---|
| US20240417832A1 (en) | 2024-12-19 |
| EP4400624A1 (en) | 2024-07-17 |
| CN118140002A (zh) | 2024-06-04 |
| EP4400624A4 (en) | 2025-10-29 |
| KR20230059023A (ko) | 2023-05-03 |
| JP2024537909A (ja) | 2024-10-16 |
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