Original document(5 pages)  中文版
    The present invention relates to a hole cold-drawing process for opening connecting hole on the phaseisolated closed bus housing of main circuit. Said invention is characterized by that after the hole is opened on the phaseisolated closed bus housing of main circuit, the opned hole is outward cold-drawn to a certain height so as to make it become a standard circular hole, then a hole-to-hole correspondent automatic welding process is adopted by making the above-mentioned standard circular hole corresponding to the phaseisolated closed bus housing of the branch circuit.
Application Number
申请号		 95111010 Application Date
申请日		 1995.04.17
Title 名称 Cold-drawing technology for processing phaseisolated enclosed bus housing
Publication Number
公开号		 1141826 Publication Date
公开日		 1997.02.05
Approval Pub. Date Granted Pub. Date
International Classification 分类号 B21D28/28
Applicant(s) Name
申请人		 Jiangyue Industrial Group Co., Zhenjiang City
Address 地址 212211
Inventor(s) Name 发明人
Attorney & Agent 代理人 XUE HUAFANG

  
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