公开(公告)号：US20140033532A1

公开(公告)日：2014-02-06

申请号：US13955815

申请日：2013-07-31

申请人： YOSHIMURA COMPANY ,  MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Hyoji YOSHIMURA

IPC分类号： B23P15/00

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 (S11) whose inner diameter (φ11) is equal to the maximum inner diameter (φ11) of a hollow hole (S1) of a finished product of the valve head portion (1), and having a diameter-increased section (111) whose maximum outer diameter (φ12) is equal to the maximum outer diameter (φ12) of a diameter-increased section (1a) 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）的阀头部半成品（11），其内径（phi11）等于中空孔的最大内径（phi11） （1）的最终外径（phi12）直径增大部分（111）的直径增大部分（111） 1a）成品。 除了直径增加部分（111）的中心部分到下部的阀头部分半成品的部分通过冷锻多次进行颈缩，以获得阀头部分（1）的成品， 。 这种获得成品的方法由本发明提供。

公开(公告)号：US20130313463A1

公开(公告)日：2013-11-28

申请号：US13955635

申请日：2013-07-31

申请人： YOSHIMURA COMPANY ,  MITSUBISHI HEAVY INDUSTRIES, LTD.

发明人： Hyoji YOSHIMURA

IPC分类号： F01L3/16

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 (S11) whose inner diameter (φ11) is equal to the maximum inner diameter (φ11) of a hollow hole (S1) of a finished product of the valve head portion (1), and having a diameter-increased section (111) whose maximum outer diameter (φ12) is equal to the maximum outer diameter (φ12) of a diameter-increased section (1a) 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）的阀头部半成品（11），其内径（phi11）等于中空孔的最大内径（phi11） （1）的最终外径（phi12）直径增大部分（111）的直径增大部分（111） 1a）成品。 除了直径增加部分（111）的中心部分到下部的阀头部分半成品的部分通过冷锻多次进行颈缩，以获得阀头部分（1）的成品， 。 这种获得成品的方法由本发明提供。