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    METHOD FOR PRODUCING METALLIC-SODIUM-FILLED ENGINE VALVE
    4.
    发明公开
    METHOD FOR PRODUCING METALLIC-SODIUM-FILLED ENGINE VALVE 审中-公开
    法钠与金属封入发动机气门生产

    公开(公告)号：EP2541000A4

    公开(公告)日：2014-01-29

    申请号：EP10846575

    申请日：2010-09-09

    申请人： MITSUBISHI HEAVY IND LTD ,  YOSHIMURA CO

    发明人： MORII HIROKAZU ,  YOSHIMURA HYOJI

    IPC分类号： F01L3/14 ,  B21K1/22 ,  B23P15/00

    CPC分类号： F01L3/14 ,  B21C1/18 ,  B21K1/22 ,  B21K21/16 ,  B23P15/002 ,  F01L3/00 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2820/01

    摘要： Disclosed is a method--for producing an engine valve (V) filled with metallic sodium (Na) within by means of: forming a stem section (S), which has a hollow section (H), at an intended size by successively drawing the stem section (S) using dies (D1, D2, Dx, Dx+1, Dn) in a manner so as to causing the size of the outer diameter and the inner diameter of the stem section (S) to contact in a stepwise fashion; and inserting metallic sodium (Na) into the hollow section (H) of the stem section (S)--wherein after drawing the stem section (S) until the inner diameter of the hollow section (H) of the stem section (S) has become a prescribed size (steps S11-S15) and then inserting the block-shaped solid metallic sodium (Na) into the hollow section (H) of the stem section (S) (step S16), the stem section (S) is further drawn (steps S17 and S18).

    METHOD OF MANUFACTURING UMBRELLA PORTION OF HOLLOW ENGINE VALVE, AND HOLLOW ENGINE VALVE
    5.
    发明公开
    METHOD OF MANUFACTURING UMBRELLA PORTION OF HOLLOW ENGINE VALVE, AND HOLLOW ENGINE VALVE 有权
    VERFAHREN ZUR HERSTELLUNG EINES SCHIRMTEILSFÜREIN HOHLES MOTORVENTIL UND HOHLES MOTORVENTIL

    公开(公告)号：EP2325446A4

    公开(公告)日：2013-06-19

    申请号：EP09814643

    申请日：2009-09-17

    申请人： MITSUBISHI HEAVY IND LTD ,  YOSHIMURA CO

    发明人： YOSHIMURA HYOJI

    IPC分类号： F01L3/14 ,  F01L3/24

    CPC分类号： F01L3/16 ,  B21D53/84 ,  B21K1/22 ,  B23K11/0935 ,  B23P15/002 ,  F01L3/14 ,  F01L2103/00 ,  Y10T29/49307 ,  Y10T29/49309 ,  Y10T29/49405

    摘要： Forming of a valve head portion (1) of a hollow engine valve (V) comprising a material particularly satisfactory in heat resistance is performed by cold forging. On this occasion, the material with excellent heat resistance is worked to form a valve head portion semifinished product (11) having a hollow hole (Sll) whose inner diameter (Æ11) is equal to the maximum inner diameter (Æ 11) of a hollow hole (Sl) of a finished product of the valve head portion (1), and having a diameter-increased section (111) whose maximum outer diameter (Æ 12) is equal to the maximum outer diameter (Æ12) of a diameter-increased section (la) of the finished product. Parts of the valve head portion semifinished product other than a central part to a lower part of the diameter-increased section (111) are necked down by cold forging performed a plurality of times to obtain the finished product of the valve head portion (1). This method of obtaining the finished product is provided by the present invention.

    摘要翻译： 通过冷锻进行包括特别令人满意的耐热性的材料的中空发动机阀（V）的阀头部（1）的形成。 在这种情况下，对耐热性优异的材料进行加工，形成具有中空孔（S11）的阀头部分半成品（11），其内径（Æ11）等于中空部的最大内径（Æ11） （1）的成品的孔（S1），并且具有最大外径（Æ12）等于直径增加的最大外径（Æ12）的直径增大部分（111） 成品（1a）部分。 除了直径增加部分（111）的中心部分到下部之外的阀头部分半成品的部分通过多次冷锻来缩颈以获得阀头部分（1）的成品， 。 获得成品的这种方法由本发明提供。

    METHOD FOR PRODUCING ENGINE VALVE IN WHICH SODIUM METAL IS SEALED
    8.
    发明公开
    METHOD FOR PRODUCING ENGINE VALVE IN WHICH SODIUM METAL IS SEALED 审中-公开
    方法制造具有密封于其中的金属钠的发动机气门

    公开(公告)号：EP2570623A4

    公开(公告)日：2014-01-29

    申请号：EP11780544

    申请日：2011-05-02

    申请人： MITSUBISHI HEAVY IND LTD ,  YOSHIMURA CO

    发明人： MARUYAMA KAZUTAKA ,  MORII HIROKAZU ,  YOSHIMURA HYOJI

    IPC分类号： F01L3/14 ,  F01L3/24

    CPC分类号： F01L3/14 ,  B21K1/16 ,  B21K1/22 ,  B23P15/002

    摘要： Provided is a method for producing an engine valve (V) by subjecting a stem portion (S) having a hollow part (H) to a drawing treatment using a series of dies (D1, D2, Dx, Dx+1, Dn) such that the outer diameter and inner diameter of the stem portion (S) become smaller in steps and the stem portion (S) is thereby molded to the desired size, whereby, after the stem portion (S) has been subjected to the drawing treatment until the inner diameter of the hollow part (H) of the stem portion (S) has reached a specific size (steps S11 to S15), sodium metal (Na) in the form of a solid block is introduced to the hollow part (H) of the stem portion (S) (step 16-1), and a protective agent(P) made from solid paraffin or naphthalene is also introduced to the hollow part (H) of the stem portion (S) such as to form a barrier between the sodium metal (Na) and the atmosphere (step S16-2), after which the stem portion (S) is further subjected to a cold drawing treatment (steps S17, S18).