公开(公告)号：US20150325983A1

公开(公告)日：2015-11-12

申请号：US14709004

申请日：2015-05-11

申请人： FEDERAL-MOGUL IGNITION COMPANY

发明人： ANDREW STAMPER ,  GORDON MCINTOSH ,  RAYMOND BAYER

IPC分类号： H01T13/39 ,  H01T13/32

CPC分类号： H01T13/39 ,  H01T13/32 ,  H01T21/02

摘要： An industrial spark plug (20) includes a central electrode (24) with a central base (30) formed of a nickel-based material and a central firing tip (32) formed of an iridium-based material. The central firing tip (32) has a tip thickness (tct) of 0.02 to 0.03 inches, a tip diameter (dct) of 0.1184 to 0.1776 inches, and an aspect ratio of 4.736 to 7.104. The central firing tip (32) is electron beam welded to the central base (30) to provide a robust joint therebetween. The central electron beam weld (36) includes a mixture of re-crystallized iridium-based material and re-crystallized nickel-based material extending continuously along and over the entire welding interface. The spark plug (20) also includes a ground electrode (26) with a ground firing tip (38) electron beam welded to a ground base (42).

摘要翻译： 工业火花塞（20）包括具有由镍基材料形成的中心基座（30）和由铱基材料形成的中心点火尖（32）的中心电极（24）。 中心点火头（32）的尖端厚度（tct）为0.02-0.03英寸，尖端直径（dct）为0.1184至0.1776英寸，纵横比为4.736至7.104。 中心点火头（32）是电子束焊接到中心基座（30）上以在它们之间提供牢固的接头。 中心电子束焊接（36）包括重结晶的铱基材料和在整个焊接界面上连续延伸的再结晶的镍基材料的混合物。 火花塞（20）还包括接地电极（26），其具有焊接到接地基座（42）的电子束的接地点火尖（38）。