公开(公告)号：US20040140290A1

公开(公告)日：2004-07-22

申请号：US10746991

申请日：2003-12-24

Applicant: Welch Allyn, Inc.

Inventor： Dean A. Bell ,  Timothy D. Russell

IPC: B05D005/12 ,  B44C001/22

CPC classification number: H01J61/06 ,  C23F1/04 ,  H01J9/02

Abstract: A method of making a unitized tungsten electrode which exhibits superior mechanical and electrical properties which includes providing a length of cylindrical cut stock having a predetermined diameter and length. The stock is ground to form a rough unfinished electrode having an enlarged tip or nose portion at one end integrally connected to an elongated shank section. The unfinished electrode is treated by exposure to a chemical etchant for a time sufficient to form a finished electrode characterized by a smooth nose and shank surface and rounded undercut and ends. The invention includes the electrode formed by the described process.

Abstract translation: 一种制造单位钨电极的方法，其表现出优异的机械和电学性能，其包括提供一定长度的具有预定直径和长度的圆柱形切割料。 将原料研磨以形成粗糙的未完成的电极，其在一端与扩展的柄部一体地连接，具有扩大的尖端或鼻部。 未完成的电极通过暴露于化学蚀刻剂来处理足以形成成品电极的时间，其特征在于具有光滑的鼻部和柄表面以及圆形底切和末端。 本发明包括通过所述方法形成的电极。