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Flash Butt Welding Member and Flash Butt Welding Method for Providing Wheel Rim Weld Part with Excellent Formability
| Content Provider | The Lens |
|---|---|
| Related Links | https://www.lens.org/images/patent/EP/3851236/B1/EP_3851236_B1.pdf |
| Language | English |
| Publisher Date | 2023-03-29 |
| Access Restriction | Open |
| Alternative Title | Abbrennstumpfschweissvorrichtung Und Verfahren Zum Stumpfschweissen Zur Bereitstellung Eines Radfelgenteils Mit Ausgezeichneter Umformbarkeit Élément De Soudage En Bout Par Étincelage Et Procédé De Soudage En Bout Par Étincelage Pour La Fourniture D'une Pièce De Soudure De Jante De Roue Dotée D'une Excellente Aptitude Au Formage |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2020-08-25 |
| Agent | Zech, Stefan Markus |
| Applicant | Posco Co Ltd |
| Application No. | 20861065 |
| Claim | A welding member having excellent formability for a wheel rim weld portion, including a weld portion obtained by flash butt welding two steel plates using an electrode: wherein hardness of the weld portion is 220 to 270 Hv, the weld portion satisfies d 2 in which L is an overall length of an upset part forming the weld portion, and an average grain diameter of a coarse-grained HAZ portion forming the weld portion is 100 µm or less, and an average grain diameter of the fine-grained HAZ portion is 10 µm or less. The welding member of claim 1, wherein the weld portion satisfies d The welding member of claim 1, wherein the weld portion satisfies 3 A flash butt welding method of flash butt welding a weld target surface of two steel plates using an electrode and subsequently upset heating, the flash butt welding method comprising: pre-heating the weld target surface of the steel plate before the flash butt welding, cooling the upset heated weld portion, and subsequently post-heating the weld portion, wherein the weld portion obtained by the post-heating has hardness of 220 to 270 Hv, the weld portion satisfies d 2 in which L is an overall length of an upset part forming the weld portion, and an average grain diameter of a coarse-grained HAZ portion forming the weld portion is 100 µm or less, and an average grain diameter of the fine-grained HAZ portion is 10 µm or less. |
| CPC Classification | SOLDERING OR UNSOLDERING;WELDING;CLADDING OR PLATING BY SOLDERING OR WELDING;CUTTING BY APPLYING HEAT LOCALLY; e.g. FLAME CUTTING;WORKING BY LASER BEAM Vehicle Wheels ;Castors;Axles For Wheels Or Castors;Increasing Wheel Adhesion |
| Extended Family | 029-315-810-713-205 158-739-921-929-945 039-803-923-596-071 146-273-582-804-031 029-424-136-772-440 137-871-250-624-433 022-053-985-874-906 105-191-468-111-817 150-725-178-165-003 167-267-292-597-91X 013-520-072-001-223 168-399-486-762-590 |
| Patent ID | 3851236 |
| Inventor/Author | Bae Gyu-yeol Kim Ho-soo |
| IPC | B23K37/02 B23K11/02 B23K11/04 B23K103/04 |
| Status | Active |
| Owner | Posco Holdings Inc. Posco Co., Ltd Posco |
| Simple Family | 158-739-921-929-945 029-315-810-713-205 039-803-923-596-071 146-273-582-804-031 029-424-136-772-440 167-267-292-597-91X 022-053-985-874-906 137-871-250-624-433 105-191-468-111-817 150-725-178-165-003 013-520-072-001-223 168-399-486-762-590 |
| CPC (with Group) | B23K11/04 B23K11/34 B23K2103/04 B23K11/043 B23K11/02 B23K37/0258 B23K11/002 B60B2310/302 |
| Issuing Authority | European Patent Office (EPO) |
| Kind | Patent/Patent 1st level of publication/Inventor's certificate |
