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1. 发明专利

JPH0684589A FURNACE-WALL ELECTRODE OF DC ELECTRO-METALLURGICAL FURNACE 失效
公开(公告)号：JPH0684589A
公开(公告)日：1994-03-25
申请号：JP28548292
申请日：1992-09-30
申请人： UNIMETALL SA
发明人： FUIRITSUPU DETANNU , JIYANNKUROODO GUROJIYAN , GIRAN MOORE , KURISUCHIYAN RUBURIYUN
IPC分类号： C21B13/12 , C21C5/52 , C22B9/21 , F27B3/08 , F27D11/00 , H05B7/06 , H05B7/07
摘要： PURPOSE: To prevent generation of an electric arc by the presence of melted lead emerging from scrap by providing an annular member made of low melting point metal in the periphery of a metal rod of an electrode, and by extending the annular member into a ring-shaped space between a cooling sleeve and the annular member by melting it when used. CONSTITUTION: An inner diameter o a copper sleeve 9 having a circulation circuit for cooling water is nearly equal to an outer diameter of an end member 6, and is larger than a diameter of a metal rod 1 as an electrode. Therefore, a space 14 is left between the sleeve 9 and the rod 1. A ring 15 made of low melting point heavy metal, preferably lead, having a volume equal to or larger than that of the space 14 is provided in the upper portion of the sleeve 9. When the electrode is fed and heated, the ring 15 is rapidly melted to charge the space 14 and to create an electrically or thermally good contact condition between the rod 1 and the sleeve 9. The lead entering from scrap into the interstice between a furnace wall 2 and the rod 1 is added to the melted lead, however, the electrical contact condition is not adversely affected.

2. 发明专利

JPS62100988A VACUUM ARC FURNACE 失效
公开(公告)号：JPS62100988A
公开(公告)日：1987-05-11
申请号：JP24090985
申请日：1985-10-28
申请人： DAIDO STEEL CO LTD
发明人： KONDO KOICHI , TAMATOSHI OSAMU
IPC分类号： F27D11/08 , H05B7/07

3. 实用新型

JPS56552Y2 失效
公开(公告)号：JPS56552Y2
公开(公告)日：1981-01-08
申请号：JP7813674
申请日：1974-07-02
IPC分类号： H05B7/07 , F27D11/04 , H05B7/06 , H05B7/102

4. 实用新型

JPS516549U 失效
公开(公告)号：JPS516549U
公开(公告)日：1976-01-17
申请号：JP7813674
申请日：1974-07-02
IPC分类号： H05B7/07 , F27D11/04 , H05B7/06 , H05B7/102

5. 发明专利

JPS4960028A 失效
公开(公告)号：JPS4960028A
公开(公告)日：1974-06-11
申请号：JP10118872
申请日：1972-10-11
IPC分类号： B22D11/041 , B22D11/04 , C22B9/20 , H05B7/00 , H05B7/07 , H05B7/18

6. 发明专利

JP2006066156A Vacuum arc re-melting furnace and operation method of same 有权
标题翻译：真空电弧熔炼炉及其操作方法
公开(公告)号：JP2006066156A
公开(公告)日：2006-03-09
申请号：JP2004245829
申请日：2004-08-25
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： TAKAO YUTAKA , IMANISHI TSUYOSHI
IPC分类号： H05B7/148 , C22B9/20 , F27B5/05 , F27B5/18 , H05B7/07
CPC分类号： Y02P10/256 , Y02P10/259
摘要： PROBLEM TO BE SOLVED: To provide a vacuum arc re-melting furnace capable of monitoring the quality of electric contact between a stub welded on a consumable electrode and an outer cylinder for conduction supplying current to the stub, when refining alloy by vacuum arc re-melting. SOLUTION: On the operation method of the vacuum arc re-melting furnace including current supply to the consumable electrode through a contact face of the stub and the outer cylinder for conduction, the stub is welded on upper end of the consumable electrode, the consumable electrode is held by clamping a protrusion at the middle part of the stub by an inner cylinder for holding, and the outer cylinder for conduction is made to contact the peripheral part of the upper face of the stub. The electric resistance of the contact face is calculated and displayed by electrically insulating the inner cylinder for holding from the outer cylinder for conduction, and by measuring a voltage-drop between both cylinders during operation. The furnace is operated so that the contact resistance value gets into a range suitable for respective furnaces. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种真空电弧再熔炉，其能够监测焊接在可消耗电极上的短棒与外筒之间的电接触质量，以便向短截线供电，当通过真空精炼合金时电弧再熔化解决方案：在真空电弧再熔炉的操作方法中，包括通过短截线的接触面和用于导电的外筒向可消耗电极供电，将短截线焊接在可消耗电极的上端，消耗电极通过用于保持的内筒夹持在短截线的中间部分处的突起来保持，并且用于传导的外筒与接头的上表面的周边部分接触。通过将用于保持的内筒与外筒进行电绝缘来进行电绝缘，并且通过在运转中测量两个气缸之间的电压降来计算和显示接触面的电阻。操作炉子使得接触电阻值达到适用于相应炉的范围。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2004351471A Method for preventing corrosion and device for forming anti-corrosive coating film 审中-公开
公开(公告)号：JP2004351471A
公开(公告)日：2004-12-16
申请号：JP2003152433
申请日：2003-05-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： WATANABE ATSUSHI , NISHIOKA EIJI , YAMAMOTO MICHIYOSHI
IPC分类号： H05B7/00 , B23K9/04 , B23K9/16 , B23K9/173 , C23C26/00 , H05B7/07
摘要： PROBLEM TO BE SOLVED: To provide a method for preventing crevice corrosion by a pulse discharging method and to provide a forming device of anti-corrosive coating film.
SOLUTION: In this method, by generating pulse discharge between a structural member (20) and an electrode (2) in a gap part formed in a joining part, a fastening part or the like of the structural member (20), melting the electrode 2 by discharging heat and building up by moving the molten material to the gap part, a covering layer (55) for intercepting the penetration of water or a medium in the gap part is formed and the pulse discharge is set in combination so that control factor correlated with the oxygen concentration of the covering layer (55) allows the oxygen concentration to reduce. In this way, the covering layer (55) having no defect is formed and crevice corrosion is prevented.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2001508860A 失效
公开(公告)号：JP2001508860A
公开(公告)日：2001-07-03
申请号：JP53025798
申请日：1997-12-23
IPC分类号： H05B7/06 , C21B11/10 , C21B13/12 , C21C1/08 , C21C5/52 , F27B3/08 , H05B7/07 , H05B7/102 , H05B7/107 , H05B7/14 , H05B7/18

9. 发明专利

JPH0681055A PRODUCTION OF NICKEL-CONTAINING TITANIUM ALLOY INGOT 失效
公开(公告)号：JPH0681055A
公开(公告)日：1994-03-22
申请号：JP35656891
申请日：1991-12-25
申请人： NIKKO KINZOKU KK
发明人： TAKI CHIHIRO , MITSUYOSHI SUKEHIRO
IPC分类号： B22D27/02 , C22B9/20 , C22C1/02 , C22C14/00 , C22F1/00 , C22F1/18 , F27D11/08 , H05B7/07
摘要： PURPOSE:To prevent the falling of a part of an electrode in arc secondary melting for a nickel-containing titanium ingot. CONSTITUTION:In the secondary melting, a slab 2 is welded to an ingot 1 as electrode. Because an extremely brittle Ti2Ni layer is-precipitated in the vicinity of joint part, cracks are developed from the joint surface between the ingot and the slab in the course of melting, and the falling of the electrode is brought about. In the secondary melting, a part or the whole of the electrode prepared by primary melting is heated up to a temp. not lower than the transformation point and cooled rapidly, and secondary melting is done by using the above as electrode, by which a large amount of nickel is allowed to enter into solid solution in titanium and the brittle Ti2Ni layer is practically removed, and as a result, the occurrence of falling can be prevented. In titanium containing 2-11wt.% Ni, heat treatment is done at 800-900 deg.C.

10. 发明专利

JPH0474419B2 失效
公开(公告)号：JPH0474419B2
公开(公告)日：1992-11-26
申请号：JP10747884
申请日：1984-05-29
IPC分类号： C22C1/00 , B23K35/04 , B23K35/06 , C22B9/20 , C22C1/02 , H05B7/07

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