公开(公告)号：US20110126791A1

公开(公告)日：2011-06-02

申请号：US13055222

申请日：2008-07-25

申请人： Yasuhito Tanaka ,  Hisanaga Yokoyama

发明人： Yasuhito Tanaka ,  Hisanaga Yokoyama

IPC分类号： F01L3/02 ,  C21D9/00 ,  C21D1/00 ,  C21D6/00 ,  C22F1/10

CPC分类号： C22C38/02 ,  B21K1/22 ,  C21D1/10 ,  C21D1/42 ,  C21D6/00 ,  C21D9/00 ,  C21D2211/001 ,  C21D2221/00 ,  F01L1/0532 ,  F01L1/143 ,  F01L3/00 ,  F01L3/02 ,  F01L3/08 ,  F01L3/20 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2820/01 ,  Y02P10/253

摘要： Object of the Invention The invention provides a forged exhaust poppet valve and a method of solution heat treating the same, in which only a predetermined portion of the valve is subjected to the solution heat treatment so as to provide the seat portion of the valve with satisfactory wear resistance, and a predetermined transitional neck-stem region with satisfactory high-temperature creep strength.Means for Achieving the Object An exhaust poppet valve (10) comprises a head portion (12) which has a seat portion (14) on the outer periphery thereof and is integral with the diametrically tapered neck portion (16) of a stem portion (18) of the valve. Using a radio-frequency heating apparatus, a solution heat treatment is given to a predetermined transitional region (A) defined between the neck and stem portions that is exposed to exhaust air during a valve opening period so that the grain size in the region (A) is controlled not to exceed ASTM 10. Thus, not only required high-temperature creep strength is secured in the transitional neck-shaft region (A) but also necessary hardness (wear resistance) is secured in the seat portion (14) of the valve (10), thereby rendering the exhaust poppet valve highly durable.

摘要翻译： 发明目的本发明提供了一种锻造排气提升阀及其热处理方法，其中仅对阀的预定部分进行固溶热处理，以使阀的座部分具有令人满意的 耐磨性以及具有令人满意的高温蠕变强度的预定的过渡颈部区域。 用于实现对象的装置排气提升阀（10）包括头部（12），头部（12）在其外周上具有座部（14），并与杆部（18）的直径锥形颈部（16）成一体 ）。 使用射频加热装置，在限定在颈部和茎部之间的预定过渡区域（A）进行固溶热处理，其在阀打开期间暴露于排气中，使得区域（A ）被控制为不超过ASTM 10.因此，不仅在过渡颈部轴区域（A）中确保了所需的高温蠕变强度，而且确保了必要的硬度（耐磨性）在座椅部分（14）中 阀（10），从而使排气提升阀高度耐用。

公开(公告)号：US08689761B2

公开(公告)日：2014-04-08

申请号：US13055222

申请日：2008-07-25

申请人： Yasuhito Tanaka ,  Hisanaga Yokoyama

发明人： Yasuhito Tanaka ,  Hisanaga Yokoyama

IPC分类号： F01L3/02 ,  F01L3/00 ,  H01F1/04 ,  H01F1/00 ,  F01L3/20 ,  F01L3/08 ,  C22C38/02

CPC分类号： C22C38/02 ,  B21K1/22 ,  C21D1/10 ,  C21D1/42 ,  C21D6/00 ,  C21D9/00 ,  C21D2211/001 ,  C21D2221/00 ,  F01L1/0532 ,  F01L1/143 ,  F01L3/00 ,  F01L3/02 ,  F01L3/08 ,  F01L3/20 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2820/01 ,  Y02P10/253

摘要： A forged exhaust poppet valve and a method of solution heat treating the same are provided. The forged exhaust poppet valve (10) includes a head portion (12) which has a seat portion (14) on the outer periphery thereof and is integral with a diametrically tapered neck portion (16) connected to a stem portion (18). Using a radio-frequency heating apparatus, a solution heat treatment is given to a predetermined transitional region (A) of the neck portion and the stem portion that is exposed to exhaust air during a valve opening period such that the grain size in the region (A) does not exceed ASTM 10, thereby securing a necessary high-temperature creep strength in the region (A) and a necessary hardness (wear resistance) in the seat portion (14) and thereby rendering the exhaust poppet valve highly durable.

摘要翻译： 提供锻造排气提升阀及其热处理方法。 锻造排气提升阀（10）包括头部（12），头部（12）在其外周上具有座部（14），并且与连接到杆部（18）的直径锥形颈部（16）成一体。 使用射频加热装置，在阀开启期间对颈部和茎部的规定的过渡区域（A）进行固溶热处理，该过渡区域（A）暴露于排气中，使得区域 A）不超过ASTM 10，从而在座部（14）中确保区域（A）中必要的高温蠕变强度和必要的硬度（耐磨性），从而使排气提升阀高度耐用。