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Burring Structural Member
Abstract: The present invention provides a burring structural member that is resistant to fracture even when the burring structural part is bent back. In the burring structural member according to the present disclosure: a plate section has a thickness T of 2.0 mm or greater; the Charpy impact value vE(0) of the plate section at 0°C is 50 J/cm2 or greater; a BCI value, calculated according to BCI = vE(0)/Lc on the basis of the Charpy impact value vE(0) (J/cm2) and a maximum length Lc (µm) of a crack on the inner bend side of a curved wall section of the burring structural part, is 2.5 or greater; and the inner bend side of the curved wall section has a radius of curvature R (mm) that is greater than R1 calculated according to R1 = 25/BCI-1.5.
Notices, Deadlines & Correspondence
Patent Information
Applicants
NIPPON STEEL CORPORATION
Inventors
1. KOBAYASHI, Shunsuke
2. KATO, Ryoma
3. SHUTO, Hiroshi
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 202417068701-TRANSLATIOIN OF PRIOIRTY DOCUMENTS ETC. [11-09-2024(online)].pdf | 2024-09-11 |
| 2 | 202417068701-STATEMENT OF UNDERTAKING (FORM 3) [11-09-2024(online)].pdf | 2024-09-11 |
| 3 | 202417068701-REQUEST FOR EXAMINATION (FORM-18) [11-09-2024(online)].pdf | 2024-09-11 |
| 4 | 202417068701-PROOF OF RIGHT [11-09-2024(online)].pdf | 2024-09-11 |
| 5 | 202417068701-PRIORITY DOCUMENTS [11-09-2024(online)].pdf | 2024-09-11 |
| 6 | 202417068701-POWER OF AUTHORITY [11-09-2024(online)].pdf | 2024-09-11 |
| 7 | 202417068701-FORM 18 [11-09-2024(online)].pdf | 2024-09-11 |
| 8 | 202417068701-FORM 1 [11-09-2024(online)].pdf | 2024-09-11 |
| 9 | 202417068701-DRAWINGS [11-09-2024(online)].pdf | 2024-09-11 |
| 10 | 202417068701-DECLARATION OF INVENTORSHIP (FORM 5) [11-09-2024(online)].pdf | 2024-09-11 |
| 11 | 202417068701-COMPLETE SPECIFICATION [11-09-2024(online)].pdf | 2024-09-11 |
| 12 | 202417068701-FORM 3 [09-01-2025(online)].pdf | 2025-01-09 |