专利检索 ap:("ISHIKAWAJIMA HARIMA HEAVY IND") AND inv:"YASUKAWA SHOZO" 第 1 页

1.

发明授权
Heating method for direct-arc furnace 失效
标题翻译：直热炉的加热方法

公开(公告)号：US3588309A

公开(公告)日：1971-06-28

申请号：US3588309D

申请日：1969-06-26

申请人： ISHIKAWAJIMA HARIMA HEAVY IND

发明人： YASUKAWA SHOZO , AOSHIKA MASAYUKI

IPC分类号： H05B7/02 , H05B3/60 , H05B7/10

CPC分类号： H05B7/02

摘要： HEATING METHOD FOR DIRECT ARC FURNACES. AT AN INITIAL STAGE OF MELTING THE FURNACE CHARGE, THE TIPS OF THE ELECTRODES ARE SPACED APART BY RELATIVELY LONG DISTANCES. AS THE MELTING IS ADVANCED, THIS SPACING IS GRADUALLY REDUCED, WHILE THE ELECTRODES ARE LOWERED.