To provide a press molded product manufacturing method which shortens a weld time and can improve productivity.SOLUTION: A laminated blank 10 is formed in such a manner that a body steel plate 1 and a reinforcement steel plate 2 are joined and are overlapped by performing laser welding of overlapped part 3 of the body steel plate 1 and the reinforcement steel plate 2. This laminated blank 10 is heated to a temperature equal to or higher than an austenite transformation temperature, whereby the laminated blank 10 is transformed into austenite. The laminated blank 10, which has been transformed into austenite, is press-molded by a metal mold 6, and at the same time, is quickly cooled to be transformed into a martensite, thereby forming the press molded product.SELECTED DRAWING: Figure 1

    【課題】溶接時間を短縮し、生産性を向上させることができるプレス成形品の製造方法を提供する。【解決手段】本体鋼板1と補強鋼板2との重ね合わせ部3をレーザー溶接することにより、本体鋼板1と補強鋼板2を接合して重ね合わせブランク10を形成する。この重ね合わせブランク10をオーステナイト変態温度以上の温度に加熱することにより重ね合わせブランク10をオーステナイトに変態せしめる。そして、オーステナイトに変態された重ね合わせブランク10を金型6でプレス成形すると同時に急冷してマルテンサイトに変態せしめることにより、プレス成形品を形成する。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    PRESS MOLDED PRODUCT MANUFACTURING METHOD


    Additional title:

    プレス成形品の製造方法


    Contributors:

    Publication date :

    2020-10-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / B62D MOTOR VEHICLES , Motorfahrzeuge



    Press-molded product, press-molded product producing method, and press-molded product producing apparatus

    ITO YASUHIRO / NAKAZAWA YOSHIAKI | European Patent Office | 2021

    Free access

    Press-molded product, press-molded product producing method, and press-molded product producing apparatus

    ITO YASUHIRO / NAKAZAWA YOSHIAKI | European Patent Office | 2019

    Free access

    PRESS MOLDED PRODUCT MANUFACTURING METHOD, PRESS MOLDED PRODUCT, CENTER PILLAR OUTER, AND HOT PRESS MOLDING DIE

    KOGA ATSUO / HIROSE TOMOHITO / ZENIYA YU | European Patent Office | 2019

    Free access

    PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT PRODUCING METHOD, AND PRESS-MOLDED PRODUCT PRODUCING APPARATUS

    ITO YASUHIRO / NAKAZAWA YOSHIAKI | European Patent Office | 2019

    Free access

    PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT PRODUCING METHOD, AND PRESS-MOLDED PRODUCT PRODUCING APPARATUS

    ITO YASUHIRO / NAKAZAWA YOSHIAKI | European Patent Office | 2019

    Free access