公开(公告)号：US08471174B2

公开(公告)日：2013-06-25

申请号：US12741511

申请日：2008-04-02

申请人： Dae Yeol Ohm ,  Seok Ki Song ,  Hyun Joong Kim ,  Byung Heon Shin ,  Young Tae Yoo

发明人： Dae Yeol Ohm ,  Seok Ki Song ,  Hyun Joong Kim ,  Byung Heon Shin ,  Young Tae Yoo

IPC分类号： B23K26/00

CPC分类号： B23K26/32 ,  B23K26/0622 ,  B23K26/28 ,  B23K2101/006 ,  B23K2101/36 ,  B23K2103/08 ,  B23K2103/18 ,  B23K2103/26 ,  H01T21/02

摘要： A method of welding a noble metal tip of a spark plug to an electrode is provided. In the method of welding, in a waveform of a power of a laser beam according to a time of the laser welding, a power of a central portion thereof is smaller than those of both end portions thereof. In addition, the waveform of the power of the laser beam according to a time of the laser welding is a trapezoidal waveform which includes: a rising portion in which the power of the laser beam is gradually increased; a power maintaining portion in which the power of the laser beam after the rising portion is maintained uniform; and a falling portion in which the power of the laser beam after the power maintaining portion is gradually decreased. In addition, the waveform of the power of the laser beam according to a time of the laser welding is a triangular waveform which includes: a rising portion in which the power of the laser beam is gradually increased; and a falling portion in which the power of the laser beam after the rising portion is gradually decreased. Accordingly, it is possible to securely attach the electrode tip to a central electrode or a ground electrode.

摘要翻译： 提供了将火花塞的贵金属端头焊接到电极的方法。 在焊接方法中，根据激光焊接时的激光束的功率波形，其中心部分的功率小于其两端部的功率。 此外，根据激光焊接时间的激光束的功率波形是梯形波形，其包括：激光束的功率逐渐增加的上升部分; 功率保持部，其中激光束在上升部分之后的功率保持均匀; 以及其中在功率保持部分之后的激光束的功率逐渐减小的下降部分。 此外，根据激光焊接的时间的激光束的功率的波形是三角波形，其包括：激光束的功率逐渐增加的上升部分; 以及在上升部分之后激光束的功率逐渐减小的下降部分。 因此，可以将电极头牢固地固定到中心电极或接地电极。

公开(公告)号：US20100258541A1

公开(公告)日：2010-10-14

申请号：US12741511

申请日：2008-04-02

申请人： Dae Yeol Ohm ,  Seok Ki Song ,  Hyun Joong Kim ,  Byung Heon Shin ,  Young Tae Yoo

发明人： Dae Yeol Ohm ,  Seok Ki Song ,  Hyun Joong Kim ,  Byung Heon Shin ,  Young Tae Yoo

IPC分类号： B23K26/00

CPC分类号： B23K26/32 ,  B23K26/0622 ,  B23K26/28 ,  B23K2101/006 ,  B23K2101/36 ,  B23K2103/08 ,  B23K2103/18 ,  B23K2103/26 ,  H01T21/02

摘要： A method of welding a noble metal tip of a spark plug to an electrode is provided. In the method of welding, in a waveform of a power of a laser beam according to a time of the laser welding, a power of a central portion thereof is smaller than those of both end portions thereof. In addition, the waveform of the power of the laser beam according to a time of the laser welding is a trapezoidal waveform which includes: a rising portion in which the power of the laser beam is gradually increased; a power maintaining portion in which the power of the laser beam after the rising portion is maintained uniform; and a falling portion in which the power of the laser beam after the power maintaining portion is gradually decreased. In addition, the waveform of the power of the laser beam according to a time of the laser welding is a triangular waveform which includes: a rising portion in which the power of the laser beam is gradually increased; and a falling portion in which the power of the laser beam after the rising portion is gradually decreased. Accordingly, it is possible to securely attach the electrode tip to a central electrode or a ground electrode.

摘要翻译： 提供了将火花塞的贵金属端头焊接到电极的方法。 在焊接方法中，根据激光焊接时的激光束的功率波形，其中心部分的功率小于其两端部的功率。 此外，根据激光焊接时间的激光束的功率波形是梯形波形，其包括：激光束的功率逐渐增加的上升部分; 功率保持部，其中激光束在上升部分之后的功率保持均匀; 以及其中在功率保持部分之后的激光束的功率逐渐减小的下降部分。 此外，根据激光焊接的时间的激光束的功率的波形是三角波形，其包括：激光束的功率逐渐增加的上升部分; 以及在上升部分之后激光束的功率逐渐减小的下降部分。 因此，可以将电极头牢固地固定到中心电极或接地电极。

公开(公告)号：US08217562B2

公开(公告)日：2012-07-10

申请号：US12525398

申请日：2007-09-21

申请人： Dae Yeol Ohm ,  Nack J. Kim ,  Jun Ho Bae ,  Seok Ki Song ,  Hyun Joong Kim ,  Jong Hyun Im

发明人： Dae Yeol Ohm ,  Nack J. Kim ,  Jun Ho Bae ,  Seok Ki Song ,  Hyun Joong Kim ,  Jong Hyun Im

IPC分类号： H01T13/20

CPC分类号： H01T13/39

摘要： Provided is an ignition plug used for an internal-combustion engine. The ignition plug includes: a center electrode; an insulator disposed outside the center electrode; a metal housing disposed outside the insulator; a ground electrode having an end connected to the metal housing and the other end facing the center electrode; and an electrode tip fixed to one or more of the center electrode and the ground electrode. The electrode tip is made of an alloy of iridium Ir, hafnium Hf, and niobium Nb. Therefore, the ignition plug with the low-cost iridium can have high resistance to prevent an iridium element from oxidizing and vaporizing in high speed driving conditions.

摘要翻译： 提供一种用于内燃机的火花塞。 火花塞包括：中心电极; 设置在中心电极外侧的绝缘体; 设置在绝缘体外部的金属壳体; 接地电极，其端部连接到金属壳体，另一端面向中心电极; 以及固定到中心电极和接地电极中的一个或多个的电极头。 电极头由铱Ir，铪Hf和铌Nb的合金制成。 因此，具有低成本铱的火花塞可以具有高的阻力，以防止铱元件在高速行驶条件下氧化和汽化。

公开(公告)号：US20100026159A1

公开(公告)日：2010-02-04

申请号：US12525398

申请日：2007-09-21

申请人： Dae Yeol Ohm ,  Nack. J. Kim ,  Jun Ho Bae ,  Seok Ki Song ,  Hyun Joong Kim ,  Jong Hyun Im

发明人： Dae Yeol Ohm ,  Nack. J. Kim ,  Jun Ho Bae ,  Seok Ki Song ,  Hyun Joong Kim ,  Jong Hyun Im

IPC分类号： H01T13/20

CPC分类号： H01T13/39

摘要： Provided is an ignition plug used for an internal-combustion engine. The ignition plug includes: a center electrode; an insulator disposed outside the center electrode; a metal housing disposed outside the insulator; a ground electrode having an end connected to the metal housing and the other end facing the center electrode; and an electrode tip fixed to one or more of the center electrode and the ground electrode. The electrode tip is made of an alloy of iridium Ir, hafnium Hf, and niobium Nb. Therefore, the ignition plug with the low-cost iridium can have high resistance to prevent an iridium element from oxidizing and vaporizing in high speed driving conditions.

摘要翻译： 提供一种用于内燃机的火花塞。 火花塞包括：中心电极; 设置在中心电极外侧的绝缘体; 设置在绝缘体外部的金属壳体; 接地电极，其端部连接到金属壳体，另一端面向中心电极; 以及固定到中心电极和接地电极中的一个或多个的电极头。 电极头由铱Ir，铪Hf和铌Nb的合金制成。 因此，具有低成本铱的火花塞可以具有高的阻力，以防止铱元件在高速行驶条件下氧化和汽化。