DE1143942B - Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening - Google Patents

Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening

Info

Publication number
DE1143942B
DE1143942B DEC17614A DEC0017614A DE1143942B DE 1143942 B DE1143942 B DE 1143942B DE C17614 A DEC17614 A DE C17614A DE C0017614 A DEC0017614 A DE C0017614A DE 1143942 B DE1143942 B DE 1143942B
Authority
DE
Germany
Prior art keywords
nipple
securing
electrodes
carbon
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEC17614A
Other languages
German (de)
Inventor
Dr-Ing Ernst Doetsch
Gregor Klier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FA C CONRADTY
Original Assignee
FA C CONRADTY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to LU37186D priority Critical patent/LU37186A1/xx
Priority to NL101950D priority patent/NL101950C/xx
Priority to DEC17251A priority patent/DE1057261B/en
Application filed by FA C CONRADTY filed Critical FA C CONRADTY
Priority to DEC17614A priority patent/DE1143942B/en
Priority to CH6884659A priority patent/CH372396A/en
Priority to GB10387/59A priority patent/GB877352A/en
Priority to FR39405A priority patent/FR1224483A/en
Priority to BE579104A priority patent/BE579104A/en
Priority to US828301D priority patent/US3048433A/en
Publication of DE1143942B publication Critical patent/DE1143942B/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00Heating by electric discharge
    • H05B7/02Details
    • H05B7/14Arrangements or methods for connecting successive electrode sections
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • C21C7/064Dephosphorising; Desulfurising
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/25Process efficiency
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00Pipe joints or couplings
    • Y10S285/915Mastic
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S403/00Joints and connections
    • Y10S403/05Carbon electrode
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S411/00Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
    • Y10S411/924Coupled nut and bolt
    • Y10S411/947Elastic-gripping action
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/47Molded joint
    • Y10T403/472Molded joint including mechanical interlock
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/47Molded joint
    • Y10T403/477Fusion bond, e.g., weld, etc.
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/55Member ends joined by inserted section
    • Y10T403/556Section threaded to member

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Discharge Heating (AREA)
  • Furnace Details (AREA)
  • Prevention Of Electric Corrosion (AREA)

Description

In der Patentanmeldung C 17251 VIIId/21h ist eine Sicherung der Schraubnippelverbindung bei Kohle oder Graphitelektroden für elektrische Öfen gegen Lockerung beschrieben, welche darin besteht, daß in die Stirnflächen des Gewindenippels und in den Boden der Gewindeschachteln mehrere über die ganze Fläche verteilte Vertiefungen eingearbeitet sind und daß der freie Raum zwischen den Stirnflächen des Gewindenippels und dem Boden der Gewindeschachteln und die eingearbeiteten Vertiefungen mit einem an sich bekannten, von selbst erhärtenden und vor der Verkokung nicht mehr erweichenden Stoff als Sicherungsmaterial ausgefüllt werden, so daß an jedem Ende des Gewindenippels sich eine Scheibe mit mehreren in die Nippelstirnfläche und in den Schachtelboden hineinragenden Zapfen bildet, wodurch eine Verdrehung des Gewindenippels durch die sperrende Wirkung der Zapfen verhindert wird.In the patent application C 17251 VIIId / 21h a securing of the screw nipple connection with carbon or graphite electrodes for electric furnaces against loosening is described, which consists in that in the end faces of the threaded nipple and in the bottom of the threaded boxes several depressions distributed over the entire surface are incorporated and that the free space between the end faces of the threaded nipple and the bottom of the threaded boxes and the incorporated depressions are filled with a known, self-hardening and no longer softening substance before coking as a backup material, so that a washer at each end of the threaded nipple with several pins protruding into the nipple face and into the box bottom, whereby a twisting of the threaded nipple is prevented by the locking effect of the pins.

Nach einem weiteren Merkmal der Hauptpatentanmeldung ist das Gewinde von Nippel und Schachtel durch längs oder schräg verlaufende Nuten mehrfach unterbrochen, wobei die Nuten so eingearbeitet sind, daß beim Zusammenschrauben die Nuten im Nippelgewinde den Nuten im Schachtelgewinde gegenüberstehen oder sie sich kreuzen. Durch diese Nuten, in die ebenfalls das unter hohem Druck von außen hineingepreßte Kittmaterial eindringt, wird eine weitere Sperrung des Nippels gegen Verdrehung erzielt.Another feature of the main patent application is the thread of the nipple and box interrupted several times by longitudinal or inclined grooves, the grooves being incorporated in this way are that when screwing together the grooves in the nipple thread the grooves in the box thread face each other or they cross. Through these grooves, in which the high pressure of If cement material pressed in from the outside penetrates, the nipple is further locked against rotation achieved.

Ein weiteres besonderes Merkmal der Hauptpatentanmeldung besteht darin, daß nach dem Zusammenschrauben der Elektroden das selbsterhärtende Sicherungsmaterial unter hohem Druck von außen in an sich bekannter Weise durch eine dünne Bohrung in die Gewindeschachteln in Höhe des Gewindeschachtelbodens hineingepreßt wird.Another special feature of the main patent application is that after screwing together the electrodes attach the self-hardening fuse material under high pressure from the outside known way through a thin hole in the threaded boxes at the level of the threaded box bottom is pressed into it.

Versuche haben nun ergeben, daß die gleiche sichernde Wirkung erzielt werden kann, wenn das erhärtende Kittmaterial bereits unmittelbar vor dem Zusammenschrauben von Nippel und Elektroden auf den Boden des Nippelloches der unteren Elektrode und auf die obere Stirnfläche des Gewindenippels und in die das Gewinde an mehreren Stellen unterbrechenden Nuten aufgetragen wird. Beim Zusammenschrauben der Elektroden wird das Kittmaterial dann fest zusammengepreßt und wie durch eine Spindelpresse unter hohem Druck gesetzt, wobei der Kitt abgepreßt wird und alle Hohl- und Zwischenräume an den Nippelenden voll ausgefüllt werden. Ein Verdrehen ist nach dem Erhärten der Kittmasse nicht mehr möglich. Das immerhin schwierige Einarbeiten einer dünnen Bohrung in die Gewindeschachteln, das Sicherung der SchraubnippelverbindungExperiments have now shown that the same securing effect can be achieved if the hardening cement material immediately before the nipple and electrodes are screwed together the bottom of the nipple hole of the lower electrode and on the upper face of the threaded nipple and in which the thread is applied at several points interrupting grooves. When screwing together The putty material is then firmly pressed together by the electrodes and as if by a screw press put under high pressure, where the putty is squeezed out and all voids and spaces be completely filled at the nipple ends. There is no twisting after the putty has hardened more is possible. The difficult work of a thin hole in the threaded boxes, that Securing the screw nipple connection

bei Kohle- oder Graphitelektroden
für elektrische Öfen gegen Lockerung
with carbon or graphite electrodes
for electric ovens against loosening

Zusatz zur Patentanmeldung C 17251 VIIId/21h
(Auslegeschrift 1 057 261)
Addition to patent application C 17251 VIIId / 21h
(Auslegeschrift 1 057 261)

Anmelder:Applicant:

Fa. C. Conradty,C. Conradty,

Nürnberg 2, Spittlertorgraben 9Nuremberg 2, Spittlertorgraben 9

Dr.-Ing. Ernst Doetsch, Nürnberg,Dr.-Ing. Ernst Doetsch, Nuremberg,

und Gregor Klier, Röthenbach/Pegnitz,and Gregor Klier, Röthenbach / Pegnitz,

sind als Erfinder genannt wordenhave been named as inventors

die Schachtelwand etwas schwächen könnte, entfällt damit, so daß keinerlei Gefahr für die Bildung von Rissen mehr besteht. Auch die Anordnung einer Längsbohrung im Nippel ist nicht mehr erforderlich. Erfahrungsgemäß hat sich gezeigt, daß bei kleinen Elektrodenabmessungen die Anbringung nur von Nuten in den Gewindegängen oder nur von Vertiefungen in den Stirnflächen des Nippels und im Schachtelboden genügt. Mit zunehmendem Durchmesser und steigendem Gewicht der Elektroden ist die Vermehrung der Sperrmöglichkeiten zweckmäßig. Aber auch die örtlichen Gegebenheiten an den einzelnen Lichtbogenofen müssen bei der Wahl und der Anzahl der Sperrmöglichkeiten berücksichtigt werden-. Es ist bekannt, daß manche Öfen nahezu erschütterungsfrei laufen, während manche gleicher Größe bei besonders hoher Belastung stark vibrieren. In der Praxis zeigt sich, mit welch geringster Anzahl von Sperrungen eine völlig einwandfreie und feste Elektrodenverbindung erreicht wird.could weaken the box wall somewhat, so there is no danger of the formation of There are more cracks. The arrangement of a longitudinal bore in the nipple is also no longer necessary. Experience has shown that with small electrode dimensions, the attachment of only Grooves in the threads or only of recesses in the end faces of the nipple and in the The bottom of the box is sufficient. With increasing diameter and increasing weight of the electrodes increasing the number of blocking options is expedient. But also the local conditions of the individual Arc furnace must be taken into account when choosing and the number of locking options. It is known that some ovens run almost without vibration, while some run the same Size vibrate strongly under particularly high loads. In practice it turns out with which least Number of locks a completely perfect and solid electrode connection is achieved.

Claims (1)

PATENTANSPRUCH:PATENT CLAIM: Sicherung der Schraubnippelverbindung bei Kohle- oder Graphitelektroden für elektrische Öfen gegen Lockerung nach Patentanmeldung C 17251 VIIId/21h, dadurch gekennzeichnet, daß der selbsterhärtende, vor der Verkokung nicht mehr erweichende und als Sicherungsmaterial dienende Stoff vor dem Verbinden der Elektroden auf den Boden der Gewindeschachtel derSecuring the screw nipple connection in carbon or graphite electrodes for electric ovens against loosening according to patent application C 17251 VIIId / 21h, characterized in that the self-hardening substance, which no longer softens before coking and serves as a securing material, is used as a safety material before the electrodes are connected to the bottom of the threaded box 309 510/311309 510/311 3 43 4 unteren Elektrode sowie auf die obere Stirnfläche tief ungen und Nuten in Nippel und Schachtel ein-lower electrode as well as deepenings and grooves on the upper face in the nipple and box. des Gewindenippels und in die das Gewinde von gepreßt wird. Nippel und Schachtel an mehreren Stellen unter-of the threaded nipple and into which the thread is pressed. Nipple and box in several places under- brechenden Nuten aufgetragen und durch das In Betracht gezogene Druckschriften: Zusammenschrauben von Nippel und Elektroden 5 Buch von Rudolf Taussig: »ElektrischeSchmelzunter hohe^ Druck in alle eingearbeiteten Ver- öfen«, Verlag Springer, Wien 1933.applied to the breaking grooves and by the publications considered: Screwing together nipples and electrodes 5 Book by Rudolf Taussig: »Electric melt under high pressure in all incorporated offices, "Verlag Springer, Vienna 1933. ©309 510/311 2.63© 309 510/311 2.63
DEC17614A 1958-07-25 1958-10-04 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening Pending DE1143942B (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
LU37186D LU37186A1 (en) 1958-07-25
NL101950D NL101950C (en) 1958-07-25
DEC17251A DE1057261B (en) 1958-07-25 1958-07-25 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening
DEC17614A DE1143942B (en) 1958-07-25 1958-10-04 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening
CH6884659A CH372396A (en) 1958-07-25 1959-01-27 Method for producing a screw nipple connection for carbon or graphite electrodes for electric furnaces
GB10387/59A GB877352A (en) 1958-07-25 1959-03-25 Improvements in screwed nipple joints in carbon or graphite electrodes for electric furnaces
FR39405A FR1224483A (en) 1958-07-25 1959-05-14 Improvements to screwed end fittings for electric oven electrodes
BE579104A BE579104A (en) 1958-07-25 1959-05-28 Improvements to screwed end fittings for electric oven electrodes.
US828301D US3048433A (en) 1958-07-25 1959-07-20 Screw nipple connection for electrodes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEC17251A DE1057261B (en) 1958-07-25 1958-07-25 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening
DEC17614A DE1143942B (en) 1958-07-25 1958-10-04 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening

Publications (1)

Publication Number Publication Date
DE1143942B true DE1143942B (en) 1963-02-21

Family

ID=25969218

Family Applications (2)

Application Number Title Priority Date Filing Date
DEC17251A Pending DE1057261B (en) 1958-07-25 1958-07-25 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening
DEC17614A Pending DE1143942B (en) 1958-07-25 1958-10-04 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEC17251A Pending DE1057261B (en) 1958-07-25 1958-07-25 Securing the screw nipple connection with carbon or graphite electrodes for electric ovens against loosening

Country Status (8)

Country Link
US (1) US3048433A (en)
BE (1) BE579104A (en)
CH (1) CH372396A (en)
DE (2) DE1057261B (en)
FR (1) FR1224483A (en)
GB (1) GB877352A (en)
LU (1) LU37186A1 (en)
NL (1) NL101950C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1294578B (en) * 1963-08-16 1969-05-08 Conradty Fa C Procedure for securing the screw connection between carbon or graphite electrodes and the molded fuse to carry out the procedure

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DE1696436B1 (en) * 1961-03-29 1969-09-25 Sigri Elektrographit Gmbh Connection of graphite parts
US3313976A (en) * 1963-10-18 1967-04-11 Union Carbide Corp Joined arc carbons
US3472301A (en) * 1967-10-18 1969-10-14 Loctite Corp Self-sealing mechanical fastener
US3517957A (en) * 1967-10-23 1970-06-30 Great Lakes Carbon Corp Nipple-electrode assembly and joint and method of making same
US3549739A (en) * 1968-10-01 1970-12-22 Union Carbide Corp Strengthened arc carbon electrode joints
US3628006A (en) * 1969-12-19 1971-12-14 Tideland Signal Corp Signal lantern
DE2001212B2 (en) * 1970-01-13 1972-01-20 Fa C Conradty, 8500 Nürnberg SCREW NIPPLE CONNECTION OF COAL OR GRAPHITE ELECTRODES IN ELECTRIC OVENS
US3771889A (en) * 1971-08-30 1973-11-13 Great Lakes Carbon Corp Nipple-electrode assembly and joint
US3771886A (en) * 1971-08-30 1973-11-13 Great Lakes Carbon Corp Nipple-electrode assembly and joint
US3771887A (en) * 1971-08-30 1973-11-13 Great Lakes Carbon Corp Nipple-electrode assembly and joint
US3858994A (en) * 1971-09-27 1975-01-07 Carborundum Co Electrode nipple drilling machine and process
US3926172A (en) * 1974-10-29 1975-12-16 Raytheon Co Electric igniter for gas burners
US4208149A (en) * 1978-10-25 1980-06-17 Airco, Inc. Electrode connecting pin assembly
DE3147793A1 (en) * 1981-12-03 1983-06-09 Sigri Elektrographit Gmbh, 8901 Meitingen PRODUCTION LINE FOR GRAPHITE NIPPLE WITH DEVICES FOR THE PRODUCTION OF STORAGE HOLES AND FOR FILLING THE HOLES WITH A BINDER
US4729689A (en) * 1984-12-13 1988-03-08 Union Carbide Corporation Electrode member and process for the production thereof
US4725161A (en) * 1986-09-05 1988-02-16 Union Carbide Corporation Electrode joint
US4773282A (en) * 1987-04-06 1988-09-27 Pneumo Abex Corporation Piston rod assembly including an injection bonded piston head and fabrication method
US4813805A (en) * 1988-05-05 1989-03-21 Union Carbide Corporation Joint for carbon electrodes
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US6119425A (en) * 1995-12-01 2000-09-19 Shimonohara; Takeshige Structure members and a method of jointing the same
US7230969B2 (en) * 2004-06-03 2007-06-12 Ucar Carbon Company Inc. Electrode joint locking system
US8165183B2 (en) * 2005-11-16 2012-04-24 Graftech International Holdings, Inc. Joint design
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US2158845A (en) * 1937-04-14 1939-05-16 Gen Electric Cementing process
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* Cited by examiner, † Cited by third party
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DE1294578B (en) * 1963-08-16 1969-05-08 Conradty Fa C Procedure for securing the screw connection between carbon or graphite electrodes and the molded fuse to carry out the procedure

Also Published As

Publication number Publication date
BE579104A (en) 1959-09-16
CH372396A (en) 1963-10-15
DE1057261B (en) 1959-05-14
GB877352A (en) 1961-09-13
LU37186A1 (en)
FR1224483A (en) 1960-06-24
NL101950C (en) 1900-01-01
US3048433A (en) 1962-08-07

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