본 발명은 판스프링 강재가 니켈(Ni) 0.003~0.2 중량%, 구리(Cu) 0.005~0.2 중량%, 몰리브덴(Mo) 0.01~0.5 중량%, 티타늄(Ti) 0.01~0.04 중량%, 바나듐(V) 0.01~0.04 중량%, 니오븀(Nb) 0.001~0.2 중량%, 알루미늄(Al) 0.001~0.01 중량% 중에서 선택되는 1종 이상이 함유되고, 탄소(C) 0.1~0.4 중량%, 실리콘(Si) 0.1~1.0 중량%, 망간(Mn) 0.1~1.5 중량%, 크롬(Cr) 0.1~0.7 중량%, 보론(B) 0.001~0.004 중량%, 질소(N) 0.004~0.015 중량%, 잔부 철 및 기타 불가피하게 함유되는 불순물로 조성되어, 베이나이트 조직분율이 90%이상 형성되도록 함으로써, 판스프링용 평 강재를 절단한 후, 강재의 선단을 가공하고, 열처리 및 표면처리를 수행한 다음 조립하여 제조되는 판스프링의 열처리 과정에서 뜨임 공정을 생략하도록 하는 자동차 현가장치용 판스프링에 관한 것이다.

    The present invention relates to a leaf spring for automobile suspension which improves leaf spring production efficiency. Steel of the leaf spring comprises one or more selected among 0.003-0.2 wt% of nickel (Ni), 0.005-0.2 wt% of copper (Cu), 0.01-0.5 wt% of molybdenum (Mo), 0.01-0.04 wt% of titanium (Ti), 0.01-0.04 wt% of vanadium (V), 0.001-0.2 wt% of niobium (Nb), and 0.001-0.01 wt% of aluminum (Al), 0.1-0.4 wt% of carbon (C), 0.1-1 wt% of silicon (Si), 0.1-1.5 wt% of manganese (Mn), 0.1-0.7 wt% of chromium (Cr), 0.001-0.004 wt% of boron (B), 0.004-0.015 wt% of nitrogen (B), and the remainder consisting of iron and inevitable impurities. The bainite structure percentage is 90% or higher. A tempering process is omitted from a heat treatment process of the leaf spring assembled and manufactured after cutting flat steel for the leaf spring, then machining the front end of the steel, and performing heat treatment and surface treatment.


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    Title :

    Leaf-Springs for Car Suspension


    Additional title:

    자동차 현가장치용 판스프링


    Publication date :

    2022-06-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / 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 / B23D Hobeln , PLANING / C21D Veränderung der physikalischen Struktur von Eisenmetallen , MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS / C22C Legierungen , ALLOYS



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