본 발명은 열연 강판을 단면이 원형인 빔(beam) 형태로 롤포밍하는 단계, 상기 빔의 대향하는 양 단을 확산 접합하는 단계, 상기 빔을 가압하는 단계 및 상기 빔을 소둔 열처리하는 단계를 포함하는 도어 임팩트 빔 제조방법으로서, 본 발명에 의하면, 열처리 공정의 추가 없이 접합부 연화 문제를 해결하고, 강관의 접합 및 소둔 열처리를 통합하여 제조가 가능하다.
The present invention relates to a door impact beam manufacturing method, comprising the following steps of: roll-forming a hot rolled steel sheet into a beam shape having a circular cross section; diffusion-bonding opposite both ends of the beam; pressing the beam; and annealing the beam. According to the present invention, a joint unit softening problem is solved without addition of a heat treatment process, and joining and annealing of a steel pipe in manufacture of the door impact beam can be integrated.
MANUFACTURING METHOD FOR A DOOR IMPACT BEAM AND THE DOOR IMPACT BEAM
도어 임팩트 빔 제조방법 및 도어 임팩트 빔
2023-09-06
Patent
Electronic Resource
Korean
IPC: | B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING , Herstellen von Blechen, Metalldraht, -stangen, -rohren Metallprofilen oder Halbzeugen auf andere Weise als durch Walzen / B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL , Bearbeiten oder Verarbeiten von Blechen, Metallrohren, -stangen oder -profilen ohne wesentliches Abtragen des Werkstoffs / B23K Löten , SOLDERING OR UNSOLDERING / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS |
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