EP0243564A3 - Method and device for demagnetizing steel - Google Patents

Method and device for demagnetizing steel Download PDF

Info

Publication number
EP0243564A3
EP0243564A3 EP86730189A EP86730189A EP0243564A3 EP 0243564 A3 EP0243564 A3 EP 0243564A3 EP 86730189 A EP86730189 A EP 86730189A EP 86730189 A EP86730189 A EP 86730189A EP 0243564 A3 EP0243564 A3 EP 0243564A3
Authority
EP
European Patent Office
Prior art keywords
electromagnets
limit switches
load
eyes
load beam
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.)
Withdrawn
Application number
EP86730189A
Other languages
German (de)
French (fr)
Other versions
EP0243564A2 (en
Inventor
Hans Ing.-Grad. Winter
Heinz-Günter Platen
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.)
Vodafone GmbH
Original Assignee
Mannesmann AG
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
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of EP0243564A2 publication Critical patent/EP0243564A2/en
Publication of EP0243564A3 publication Critical patent/EP0243564A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F13/00—Apparatus or processes for magnetising or demagnetising
    • H01F13/006—Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

Eine Lasttraverse (20) hat mehrere Aufhängeösen (21) durch die Bolzen (22) von Lageraugen (23) der Elektromagnete (5) geführt sind. An je­ der Aufhängeöse (21) ist um unteren Bereich ein Endschalter (4) be­ festigt. Nach dem Aufsetzen der Elektromagnete (5) auf den zu heben­ den Gegenstand wird die Lasttraverse (20) mit den Aufhängeösen (21) und den daran befestigten Endschaltern (4) weiterhin abgesenkt, wobei die Endschalter (4) in den Bereich von Schaltauslösern (24) gelangen, die an den Lageraugen (23) der Elektromagnete (5) befestigt sind. Erst wenn die Endschalter (4) mit den Schaltauslösern (24) in Wirk­ verbindung stehen, ist das Einschalten der Elektromagnete und danach das Heben der Last möglich. Das Ausschalten der Elektromagnete ist erst nach dem Absetzen der Last möglich, wenn die End­ schalter (4) wieder mit ihren relativ hohen Schaltauslösern (24) übereinstimmen. Vom Elektromagneten (5) führt eine Hauptleitung (25) und von jedem der Endschalter (4) eine Leitung 26 zum Stromrichter (1) auf der Lasttraverse (20). A load beam (20) has several suspension eyes (21) through the bolts (22) of bearing eyes (23) of the electromagnets (5) are guided. At each the suspension eye (21) is a limit switch (4) around the lower area consolidates. After placing the electromagnet (5) on the lift the object is the load beam (20) with the suspension eyes (21) and the limit switches (4) attached to it further lowered, whereby the limit switches (4) reach the area of the switch releases (24), which are attached to the bearing eyes (23) of the electromagnets (5). Only when the limit switches (4) with the switching triggers (24) take effect connected, is switching on the electromagnets and then lifting the load possible. The electromagnets are switched off only possible after lowering the load, if the end switches (4) again with their relatively high switching triggers (24) to match. A main line (25) leads from the electromagnet (5) and from each of the limit switches (4) a line 26 to the converter (1) on the load beam (20).

EP86730189A 1986-04-21 1986-11-11 Method and device for demagnetizing steel Withdrawn EP0243564A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3613714 1986-04-21
DE19863613714 DE3613714A1 (en) 1986-04-21 1986-04-21 METHOD AND DEVICE FOR THE DEMAGNETIZING OF STEELS

Publications (2)

Publication Number Publication Date
EP0243564A2 EP0243564A2 (en) 1987-11-04
EP0243564A3 true EP0243564A3 (en) 1988-01-07

Family

ID=6299328

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86730189A Withdrawn EP0243564A3 (en) 1986-04-21 1986-11-11 Method and device for demagnetizing steel

Country Status (2)

Country Link
EP (1) EP0243564A3 (en)
DE (1) DE3613714A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9411594D0 (en) * 1994-06-09 1994-08-03 Welding Inst Demagnetisation of materials
DE102007009361B4 (en) * 2007-02-23 2012-02-16 Bundesrepublik Deutschland, vertr. d. d. Bundesministerium für Wirtschaft und Technologie, dieses vertr. d. d. Präsidenten der Physikalisch-Technischen Bundesanstalt Method and device for demagnetizing an object made of at least partially ferromagnetic material

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005927A1 (en) * 1980-02-16 1981-09-03 Erich Dr.-Ing. 5300 Bonn Steingroever DEMAGNETIZING PROCEDURE
DD208263A1 (en) * 1981-10-29 1984-03-28 Klaus Liedloff ELECTRICAL CIRCUIT ARRANGEMENT FOR MAGNETIZING AND DETERMINING FERROMAGNETIC MATERIALS
DE3238609A1 (en) * 1982-10-19 1984-04-19 Eckart Dr.Rer.Nat. 2300 Kiel Hiss Demagnetisation device
DE3500011A1 (en) * 1985-01-02 1985-06-13 Axel R. Dr.-Ing. 5900 Siegen Hidde Method and arrangement for the regulated demagnetisation of rod-shaped, ferromagnetic and heat-treated semi-finished goods or finished goods in a continuous production process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2059290C3 (en) * 1970-12-02 1974-04-11 Klauschenz & Perrot Ohg Industrieelektronik, 6231 Schwalbach Device for clamping, releasing and demagnetizing workpieces to be clamped on an electromagnetic holding device
US3895270A (en) * 1974-04-29 1975-07-15 Western Electric Co Method of and apparatus for demagnetizing a magnetic material
DE2728383C2 (en) * 1977-06-24 1984-11-29 Wagner Kg, Fabrik Elektromagnetischer Apparate, 8941 Heimertingen Polarity reversal device for electromagnet clamping plates
IT1141165B (en) * 1980-02-06 1986-10-01 Sdm Sistemi & Dispositivi Magn SYSTEM AND CIRCUIT PROVISION FOR THE DEMAGNETIZATION OF PERMANENT MAGNETS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005927A1 (en) * 1980-02-16 1981-09-03 Erich Dr.-Ing. 5300 Bonn Steingroever DEMAGNETIZING PROCEDURE
DD208263A1 (en) * 1981-10-29 1984-03-28 Klaus Liedloff ELECTRICAL CIRCUIT ARRANGEMENT FOR MAGNETIZING AND DETERMINING FERROMAGNETIC MATERIALS
DE3238609A1 (en) * 1982-10-19 1984-04-19 Eckart Dr.Rer.Nat. 2300 Kiel Hiss Demagnetisation device
DE3500011A1 (en) * 1985-01-02 1985-06-13 Axel R. Dr.-Ing. 5900 Siegen Hidde Method and arrangement for the regulated demagnetisation of rod-shaped, ferromagnetic and heat-treated semi-finished goods or finished goods in a continuous production process

Also Published As

Publication number Publication date
DE3613714A1 (en) 1987-10-22
EP0243564A2 (en) 1987-11-04

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Inventor name: PLATEN, HEINZ-GUENTER

Inventor name: WINTER, HANS, ING.-GRAD.