JP2024500152A - 遅れ破壊抵抗性が向上した線材、部品およびその製造方法 - Google Patents
遅れ破壊抵抗性が向上した線材、部品およびその製造方法 Download PDFInfo
- Publication number
- JP2024500152A JP2024500152A JP2023537438A JP2023537438A JP2024500152A JP 2024500152 A JP2024500152 A JP 2024500152A JP 2023537438 A JP2023537438 A JP 2023537438A JP 2023537438 A JP2023537438 A JP 2023537438A JP 2024500152 A JP2024500152 A JP 2024500152A
- Authority
- JP
- Japan
- Prior art keywords
- relational expression
- delayed fracture
- fracture resistance
- content
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003111 delayed effect Effects 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 230000014509 gene expression Effects 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 11
- 229910052796 boron Inorganic materials 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 229910001566 austenite Inorganic materials 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 13
- 230000000717 retained effect Effects 0.000 claims description 12
- 229910000734 martensite Inorganic materials 0.000 claims description 10
- 238000010791 quenching Methods 0.000 claims description 10
- 230000000171 quenching effect Effects 0.000 claims description 10
- 238000005096 rolling process Methods 0.000 claims description 8
- 238000005496 tempering Methods 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 abstract 1
- 239000011572 manganese Substances 0.000 description 29
- 239000010936 titanium Substances 0.000 description 28
- 238000005728 strengthening Methods 0.000 description 19
- 230000000052 comparative effect Effects 0.000 description 17
- 230000000694 effects Effects 0.000 description 15
- 239000006104 solid solution Substances 0.000 description 15
- 239000013078 crystal Substances 0.000 description 14
- 239000000047 product Substances 0.000 description 12
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- KZEVSDGEBAJOTK-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[5-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CC=1OC(=NN=1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O KZEVSDGEBAJOTK-UHFFFAOYSA-N 0.000 description 1
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- APLNAFMUEHKRLM-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(3,4,6,7-tetrahydroimidazo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)N=CN2 APLNAFMUEHKRLM-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing 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
- C22C38/001—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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/32—Soft annealing, e.g. spheroidising
-
- 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
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- 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
- C21D9/0093—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for screws; for bolts
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
- C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
-
- 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
- C22C38/04—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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- 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
- C21D2211/008—Martensite
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)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Articles (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0178274 | 2020-12-18 | ||
| KR1020200178274A KR102492644B1 (ko) | 2020-12-18 | 2020-12-18 | 지연파괴 저항성이 향상된 선재, 부품 및 그 제조방법 |
| PCT/KR2021/018977 WO2022131752A1 (ko) | 2020-12-18 | 2021-12-14 | 지연파괴 저항성이 향상된 선재, 부품 및 그 제조방법 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2024500152A true JP2024500152A (ja) | 2024-01-04 |
Family
ID=82059247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2023537438A Pending JP2024500152A (ja) | 2020-12-18 | 2021-12-14 | 遅れ破壊抵抗性が向上した線材、部品およびその製造方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20240060162A1 (ko) |
| EP (1) | EP4265766A1 (ko) |
| JP (1) | JP2024500152A (ko) |
| KR (1) | KR102492644B1 (ko) |
| CN (1) | CN116783316A (ko) |
| WO (1) | WO2022131752A1 (ko) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3966493B2 (ja) * | 1999-05-26 | 2007-08-29 | 新日本製鐵株式会社 | 冷間鍛造用線材及びその製造方法 |
| TWI318645B (en) * | 2005-02-16 | 2009-12-21 | Nippon Steel Corp | Hot rolled steel wire material having superior processability for cold forgine after spheroidization, spheroidized steel wire having superior processability for cold forgine and methods for manufacturing the same |
| KR101091446B1 (ko) * | 2008-12-26 | 2011-12-07 | 주식회사 포스코 | 반복 가압 특성이 우수한 저온 압력용기용 고강도 강판, 그제조방법 및 딥 드로잉 제품의 제조방법 |
| KR101297539B1 (ko) * | 2010-03-02 | 2013-08-14 | 신닛테츠스미킨 카부시키카이샤 | 냉간 단조성이 우수한 강선 및 그 제조 방법 |
| JP6034632B2 (ja) * | 2012-03-26 | 2016-11-30 | 株式会社神戸製鋼所 | 耐遅れ破壊性に優れたボロン添加高強度ボルト用鋼および高強度ボルト |
| JP5776623B2 (ja) * | 2012-05-08 | 2015-09-09 | 新日鐵住金株式会社 | 冷間加工性に優れた鋼線材・棒鋼とその製造方法 |
| KR101665886B1 (ko) * | 2015-09-04 | 2016-10-13 | 주식회사 포스코 | 냉간가공성 및 충격인성이 우수한 비조질강 및 그 제조방법 |
| CN107815594A (zh) * | 2017-11-12 | 2018-03-20 | 湖南华菱湘潭钢铁有限公司 | 一种冷挤压齿轮盘条的生产方法 |
-
2020
- 2020-12-18 KR KR1020200178274A patent/KR102492644B1/ko active IP Right Grant
-
2021
- 2021-12-14 WO PCT/KR2021/018977 patent/WO2022131752A1/ko active Application Filing
- 2021-12-14 JP JP2023537438A patent/JP2024500152A/ja active Pending
- 2021-12-14 US US18/268,061 patent/US20240060162A1/en active Pending
- 2021-12-14 CN CN202180090890.8A patent/CN116783316A/zh active Pending
- 2021-12-14 EP EP21907056.2A patent/EP4265766A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022131752A1 (ko) | 2022-06-23 |
| KR20220087847A (ko) | 2022-06-27 |
| EP4265766A1 (en) | 2023-10-25 |
| KR102492644B1 (ko) | 2023-01-30 |
| US20240060162A1 (en) | 2024-02-22 |
| CN116783316A (zh) | 2023-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10577671B2 (en) | High-hardness hot-rolled steel product, and a method of manufacturing the same | |
| CA2962472C (en) | High-toughness hot-rolled high-strength steel with yield strength of grade 800 mpa and preparation method thereof | |
| JPH0441616A (ja) | 低硬度で且つ耐摩耗性および曲げ加工性に優れた耐摩耗鋼の製造方法 | |
| JPH11236644A (ja) | 高強度特性と低熱処理歪み特性に優れた高周波焼入れ用鋼材とその製造方法 | |
| JP2024060017A (ja) | 超高強度ばね用線材、鋼線及びその製造方法 | |
| JP7508469B2 (ja) | せん断加工性に優れた超高強度鋼板及びその製造方法 | |
| CN113966404B (zh) | 具有优异的可拉拔性和冲击韧性的非热处理线材及其制造方法 | |
| KR101300158B1 (ko) | 강도 및 인성이 우수한 고탄소 강판 및 그 제조 방법 | |
| JPH1180903A (ja) | 遅れ破壊特性に優れた高強度鋼部材およびその製造方法 | |
| JPH039168B2 (ko) | ||
| KR20210077505A (ko) | 우수한 수소취성 저항성을 가지는 고강도 냉간압조용 선재 및 그 제조방법 | |
| JP3422864B2 (ja) | 加工性の優れたステンレス鋼およびその製造方法 | |
| JP3422865B2 (ja) | 高強度マルテンサイト系ステンレス鋼部材の製造方法 | |
| JP2007513259A (ja) | 優れた低温衝撃特性を有する冷間圧造用鋼線及びその製造方法 | |
| JP7427764B2 (ja) | 高強度ばね用線材および鋼線並びにその製造方法 | |
| CN116724131A (zh) | 具有优异的热处理特性和抗氢致延迟断裂性的冷镦用高强度线材、热处理组件及其制造方法 | |
| JP2024500152A (ja) | 遅れ破壊抵抗性が向上した線材、部品およびその製造方法 | |
| JP2017071859A (ja) | 非調質鋼およびその製造方法 | |
| JPH0526850B2 (ko) | ||
| KR102722875B1 (ko) | 고강도강의 열처리 방법 및 그로부터 획득된 제품 | |
| KR102492631B1 (ko) | 지연파괴 저항성이 향상된 볼트용 선재, 부품 및 그 제조방법 | |
| JPS6156268A (ja) | 高靭性高張力鋼およびその製造法 | |
| KR101696097B1 (ko) | 충격인성이 우수한 고강도 비조질 선재 및 이의 제조방법 | |
| KR20240101160A (ko) | 열처리 특성이 우수한 샤프트용 중탄소강 선재 및 그 제조 방법 | |
| JP2023542952A (ja) | 自動車の板ばね用鋼及びそのばね板の製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20230810 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20240913 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20241008 |