EP0354132B1 - Procédé d'émaillage en continu de fils en alliage d'aluminium destinés à la confection de bobinages électriques - Google Patents

Procédé d'émaillage en continu de fils en alliage d'aluminium destinés à la confection de bobinages électriques Download PDF

Info

Publication number
EP0354132B1
EP0354132B1 EP89420236A EP89420236A EP0354132B1 EP 0354132 B1 EP0354132 B1 EP 0354132B1 EP 89420236 A EP89420236 A EP 89420236A EP 89420236 A EP89420236 A EP 89420236A EP 0354132 B1 EP0354132 B1 EP 0354132B1
Authority
EP
European Patent Office
Prior art keywords
wires
wire
enamelling
process according
continuously
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.)
Expired - Lifetime
Application number
EP89420236A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0354132A1 (fr
Inventor
Jacques Lefebvre
Bernard Loreau
Gabriel Colombier
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.)
Rio Tinto France SAS
Original Assignee
Aluminium Pechiney SA
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 Aluminium Pechiney SA filed Critical Aluminium Pechiney SA
Priority to AT89420236T priority Critical patent/ATE90979T1/de
Publication of EP0354132A1 publication Critical patent/EP0354132A1/fr
Application granted granted Critical
Publication of EP0354132B1 publication Critical patent/EP0354132B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/06—Anodisation of aluminium or alloys based thereon characterised by the electrolytes used
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing

Definitions

  • the present invention relates to a continuous enamelling process of raw aluminum alloy wire drawn for the manufacture of electrical windings.
  • Aluminum is like copper a good conductor of electricity but, having a lower specific mass, it has the advantage of obtaining an appreciable economy in the construction of electrical apparatuses in particular when they are intended for the industry of the transport where they allow significant reduction. This is why its substitution for copper has started to take on a certain extension, particularly in insulated wires and cables.
  • the wire is most often simply covered with a plastic envelope capable of ensuring its insulation.
  • This envelope is obtained by extrusion and surrounds the metal substrate without adhering to it, which makes it possible to remove it easily when it is desired, for example, to strip the ends of the wire to connect it.
  • the enamel or varnish must provide insulation in the form of a film of much smaller thickness than in the previous case in order to reduce the size of the coils to the maximum and must adhere strongly to the metallic core in order to be able to lend itself to consecutive deformations, for example, to winding and this without risk of chipping.
  • the present invention consisting of a continuous enamelling process of aluminum alloy wires intended for making electric windings, in which said wires are passed in succession successively in an anodizing tank under alternating current containing an aqueous solution containing phosphoric acid in an amount sufficient to maintain the conductance of said solution between 0.02 and 0.1 siemens at a temperature between 50 and 80 ° C and 0.5 to 30 g / l of a surfactant exerting a detergent and emulsifying action without foaming and this for less than 15 seconds, characterized in that the wire thus treated is coated by successive layers of enamel films of thickness less than 50 ⁇ m.
  • This agent can be chosen from acid mixtures containing surfactants and detergents.
  • the surfactants which can be used may or may not be ionic, anionic and / or amphoteric; among them, there may be mentioned polyfluorinated organic derivatives comprising a linear or branched perfluorinated chain having from 4 to 20 carbon atoms, polyethoxylated fatty alcohols, substituted phenols, alkylsulfonates, the alkyl chain of which contains for example 8 or 9 atoms of carbon.
  • As detergent products glycols, polyethylene glycols can be used.
  • the agent used must greatly lower the surface tension of the medium into which it is introduced without causing foaming and ensure the suspension of the lubrication residues which cover the treated wires.
  • the agent it is better, for example, for the agent to lower the surface tension of an aqueous solution of phosphoric acid at 100 g / l of H3PO4 at 70 ° C at a value close to 30 10 ⁇ 7 Nm when added at the rate of 30 g / l.
  • the surfactants contained in the agent can be in a very small amount, for example less than 3% by weight for the fluorinated derivatives mentioned above, of the order of 5 to 10% by weight for the ethoxylated fatty alcohols and on the order of a few% by weight for the alkysulfonates or substituted phenols.
  • the polyethylene glycols or the glycols can be present in an amount of a few%, for example 2 to 5%.
  • the amount of agent used is generally between 0.5 and 30 g / l with an optimum determined according to its composition.
  • the other anodization conditions are not critical insofar as they allow a fast processing and in any case less than 5 seconds duration.
  • the voltage depends, as usual, on the characteristics of the bath, the shape of the apparatus, the speed of passage and the current density which is the most important electrical parameter of the process.
  • the current density between 2 and 20 A / dm2, preferably between 6 and 12 A / dm2 for a bath without forced circulation, can be greatly increased if forced bath circulation is ensured.
  • the voltage is generally between 4 and 45 volts.
  • temperature is not critical; it is mainly determined by the nature of the materials used for the apparatus and by the characteristics of the surfactant used.
  • the immersed electrodes are preferably made of a material inert to the bath, for example graphite.
  • the processing time is, as has been said, very short, generally between 3 and 10 seconds. This makes it possible to process the wire continuously by passing it through the bath, for example according to a known technique known as "with liquid current intake” at speeds as high as 100 meters per minute for a tank 5 meters long.
  • liquid current outlet is understood to mean the technique described in French patent 2,526,052 and which consists in connecting the positive pole of a current source to the wire to be treated and the negative pole to an electrode which is immersed in the solution d electrolyte where said wire moves.
  • the treatment method according to the invention can be applied directly to a wire emerging from the drawing, the surface of which is covered with a more or less continuous film of the lubricant used and other impurities.
  • This invention is characterized in that the wire thus treated is then coated by successive layers of enamel films of thickness less than 50 ⁇ m.
  • the coating consists of an insulating plastic envelope obtained by extrusion and which surrounds the wire without adhering to it, which allows it to be easily removed.
  • the enamel insulates the wire in the form of a film of much smaller thickness than in the previous patent and in any case, less than 50 ⁇ m, in order to reduce the bulk. coils obtained from said wire.
  • This film strongly adheres to the wire in order to be able to lend itself easily to winding without risk of chipping.
  • this film is obtained in several passes separated by an intermediate polymerization, which is different from extrusion.
  • the method according to the invention fits perfectly into an enamelling line constructed for copper, because it suffices to insert an anodizing tank between the unwinders of raw wire drawing and the ovens intended for annealing the wires for their give the appropriate mechanical characteristics.
  • enamelling lines designed for the simultaneous passage of several wires have been described for example in French patent n ° 1,403,541.
  • the varnishes or enamels used can be of any type generally used for copper and in particular belong to the families of products consisting of polyurethanes, polyesters, polyesterimides, polyvinyls excluding polyvinyl chloride, polyamides, polyvinyl aceto-formal commercially known under the name: "formvar”.
  • connection of such wires is easily done by local dissolution of the varnish in a suitable solvent.
  • the anodically treated metal is thus exposed, which keeps the properties of contact resistance weak and stable over the time that it initially had.
  • the enameled aluminum wires according to the invention have remarkable insulation characteristics thanks to a perfect adhesion of the enamels to the metal.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Power Engineering (AREA)
  • Wire Processing (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Luminescent Compositions (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Conductive Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Organic Insulating Materials (AREA)
  • Non-Insulated Conductors (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
EP89420236A 1988-07-06 1989-07-03 Procédé d'émaillage en continu de fils en alliage d'aluminium destinés à la confection de bobinages électriques Expired - Lifetime EP0354132B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89420236T ATE90979T1 (de) 1988-07-06 1989-07-03 Verfahren zur kontinuierlichen emaillierung von draehten aus einer aluminiumlegierung, bestimmt fuer die herstellung von windungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8809613A FR2633945B1 (fr) 1988-07-06 1988-07-06 Procede d'emaillage en continu de fils en alliage d'aluminium destines a la confection de bobinages electriques
FR8809613 1988-07-06

Publications (2)

Publication Number Publication Date
EP0354132A1 EP0354132A1 (fr) 1990-02-07
EP0354132B1 true EP0354132B1 (fr) 1993-06-23

Family

ID=9368459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89420236A Expired - Lifetime EP0354132B1 (fr) 1988-07-06 1989-07-03 Procédé d'émaillage en continu de fils en alliage d'aluminium destinés à la confection de bobinages électriques

Country Status (12)

Country Link
EP (1) EP0354132B1 (ja)
JP (1) JPH0770264B2 (ja)
KR (1) KR900002359A (ja)
CN (1) CN1039677A (ja)
AT (1) ATE90979T1 (ja)
AU (1) AU3785889A (ja)
BR (1) BR8903304A (ja)
DE (1) DE68907290T2 (ja)
ES (1) ES2041435T3 (ja)
FI (1) FI893281A (ja)
FR (1) FR2633945B1 (ja)
PL (1) PL280440A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685300A5 (de) * 1992-08-05 1995-05-31 Alusuisse Lonza Services Ag Verfahren zur Vorbehandlung von Werkstoffen aus Metallen oder Metallegierungen.
SI1270767T1 (en) * 2001-06-20 2004-06-30 Wolf-Dieter Franz Process for cleaning and passivating light metal alloy surfaces
JP5633429B2 (ja) * 2011-02-25 2014-12-03 スズキ株式会社 被処理物の塗装方法
JP2014005480A (ja) * 2012-06-21 2014-01-16 Naofumi Warabi Ｍａｏ結晶性金属酸化物のホウロウ加工品
US9685269B2 (en) * 2012-10-18 2017-06-20 Ford Global Technologies, Llc Method of forming an insulated electric conductor
CN108930055B (zh) * 2018-07-17 2021-08-31 深圳市纳明特科技发展有限公司 金属表面纳米涂层处理方法
CN112962130A (zh) * 2021-03-12 2021-06-15 兰州大学 铝绕组表面的耐高温绝缘层材料及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5118632B2 (ja) * 1972-03-31 1976-06-11
JPS48102277A (ja) * 1972-04-12 1973-12-22
FR2298619A1 (fr) * 1975-01-22 1976-08-20 Pechiney Aluminium Procede et traitement superficiel d'un fil en aluminium a usage electrique
JPS569239A (en) * 1979-07-05 1981-01-30 Fujitsu Ltd Manufacture of glass for optical transmission line
JPS57149494A (en) * 1981-03-12 1982-09-16 Tateyama Alum Kogyo Kk Method of patterned surface treatment of aluminum or aluminum alloy
GB8427943D0 (en) * 1984-11-05 1984-12-12 Alcan Int Ltd Anodic aluminium oxide film

Also Published As

Publication number Publication date
ATE90979T1 (de) 1993-07-15
CN1039677A (zh) 1990-02-14
KR900002359A (ko) 1990-02-28
DE68907290D1 (de) 1993-07-29
FI893281A0 (fi) 1989-07-05
JPH0770264B2 (ja) 1995-07-31
JPH0272515A (ja) 1990-03-12
ES2041435T3 (es) 1993-11-16
PL280440A1 (en) 1990-01-08
FR2633945A1 (fr) 1990-01-12
BR8903304A (pt) 1990-02-13
FR2633945B1 (fr) 1992-09-04
FI893281A (fi) 1990-01-07
DE68907290T2 (de) 1993-11-11
AU3785889A (en) 1990-01-11
EP0354132A1 (fr) 1990-02-07

Similar Documents

Publication Publication Date Title
CA1061281A (fr) Procede de traitement superficiel d'un fil en aluminium a usage electrique
EP0354132B1 (fr) Procédé d'émaillage en continu de fils en alliage d'aluminium destinés à la confection de bobinages électriques
EP1647996A1 (fr) Cable toronne en aluminium cuivre, et procede pour sa fabrication
FR2996951A1 (fr) Fil de transport d'electricite en alliage d'aluminium
FR2526052A1 (fr) Procede et dispositif pour revetir une grande longueur de metal d'une couche metallique
EP1357206A2 (fr) Procédé d'anodisation d'une pièce en alliage d'aluminium
EP1963545B1 (fr) Procede de traitement par carboxylatation de surfaces metalliques, utilisation de ce procede pour la protection temporaire contre la corrosion, et procede de fabrication d'une tole mise en forme ainsi carboxylatee
FR2703076A1 (fr) Procédé pour former une couche électriquement isolante, tenace, sur la surface d'un matériau en cuivre.
JP2014116204A (ja) 絶縁電線及びその製造方法
EP0270210B1 (en) Method for improving the solderability of metal conductors, and conductors obtained
EP0591035B1 (fr) Procédé de fabrication de condensateurs électrolytiques à couche en polymer conducteur et à faible courant de fuite
FR1464393A (fr) Conducteurs électriques
CH633905A5 (fr) Procede de fabrication de fils electriques isoles.
US6277795B1 (en) Metal wire or a metal strip having a lubricating surface layer, and a method for its preparation
JP2015230773A (ja) 絶縁電線及びその製造方法
TR202100753A2 (tr) Çeli̇k teller ve galvani̇z kaplama öncesi̇ etki̇n temi̇zli̇k i̇çi̇n kullanilan aparatlar üzeri̇nde çeli̇k tel yüzey temi̇zli̇ği̇ni̇ sağlama si̇stemi̇ ve yöntemi̇
FR3060022A1 (fr) Materiau composite aluminium-alumine et son procede de preparation
FR2995617A1 (fr) Procede de revetement de conducteurs electriques en aluminium
SU1032047A1 (ru) Способ получени металлических покрытий на алюминии
BE394772A (ja)
BE491664A (ja)
JP2749708B2 (ja) 銅線の製造方法
FR3110765A1 (fr) câble présentant une résistance à la corrosion améliorée
JPH0417209A (ja) コロナ騒音対策電線およびその製造方法
JPH0343349B2 (ja)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900222

17Q First examination report despatched

Effective date: 19920121

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19930623

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930623

REF Corresponds to:

Ref document number: 90979

Country of ref document: AT

Date of ref document: 19930715

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930630

REF Corresponds to:

Ref document number: 68907290

Country of ref document: DE

Date of ref document: 19930729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930731

Ref country code: BE

Effective date: 19930731

ITF It: translation for a ep patent filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2041435

Country of ref document: ES

Kind code of ref document: T3

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
BERE Be: lapsed

Owner name: ALUMINIUM PECHINEY

Effective date: 19930731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89420236.5

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20050531

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20050617

Year of fee payment: 17

Ref country code: AT

Payment date: 20050617

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20050620

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20050627

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050703

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20050707

Year of fee payment: 17

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060703

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060703

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070201

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060703

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20060704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060704

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20080728

Year of fee payment: 20

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20091201