EP0128846B1 - Verfahren zur Erhöhung der Flexibilität von kaltgezogenen Kupferröhren durch Randglühen - Google Patents

Verfahren zur Erhöhung der Flexibilität von kaltgezogenen Kupferröhren durch Randglühen Download PDF

Info

Publication number
EP0128846B1
EP0128846B1 EP84420101A EP84420101A EP0128846B1 EP 0128846 B1 EP0128846 B1 EP 0128846B1 EP 84420101 A EP84420101 A EP 84420101A EP 84420101 A EP84420101 A EP 84420101A EP 0128846 B1 EP0128846 B1 EP 0128846B1
Authority
EP
European Patent Office
Prior art keywords
cold
improving
worked copper
mpa
flexibility
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
Application number
EP84420101A
Other languages
English (en)
French (fr)
Other versions
EP0128846A1 (de
Inventor
Bernard Fargette
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.)
Trefimetaux SAS
Original Assignee
Trefimetaux SAS
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 Trefimetaux SAS filed Critical Trefimetaux SAS
Priority to AT84420101T priority Critical patent/ATE21418T1/de
Publication of EP0128846A1 publication Critical patent/EP0128846A1/de
Application granted granted Critical
Publication of EP0128846B1 publication Critical patent/EP0128846B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon

Definitions

  • the present invention relates to a process for improving the workability of hardened copper tubes. It applies more particularly to straight copper tubes, work hardened, used for sanitary installations whose external diameter is most often between 8 and 22 millimeters, and whose thickness is generally 1 millimeter.
  • These tubes includes bending operations which are carried out either on site with manual benders, or in the workshop with automatic benders with pneumatic or hydraulic control.
  • annealed tube is excluded because of its excessive ductility which leads to unsightly deformations in the case of installations where the tube is visible.
  • annealing which, surprisingly only concerns the external cortical zone of the tube, and leaves the deep zones intact; annealing is carried out at low temperature between 150 and 350 ° C, and for a period of between 5 minutes and 24 hours, and in practice, between 15 minutes and 1 hour, the temperature then being between 260 and 310 ° C.
  • Figure 1 shows the micrographic appearance of a tube treated according to the invention.
  • the recrystallization of the cortical zone inhibits the development of a necking on the external fiber of the tube, during bending, which eliminates practically all the surface defects, while, the elastic limit remaining high, the tubes keep a great rigidity, this which allows their use under the same conditions as the straight work hardened tubes used until now.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Metallurgy (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Extraction Processes (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Materials For Medical Uses (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Forging (AREA)
  • Conductive Materials (AREA)

Claims (2)

1. Verfahren zur Verbesserung der Biegsamkeit eines kaltgezogenen. Kupferrohres,
dadurch gekennzeichnet,
daß das kaltgezogene Rohr einem Teilglühen, das nur die Randzone erfaßt, bei einer Temperatur im Bereich von 150 bis 350°C während einer Dauer im Bereich von 5 Minuten bis 24 Stunden unterworfen wird.
2. Verfahren nach Anspruch 1,
dadurch gekennzeichnet,
daß das Glühen vorzugsweise bei einer Temperatur im Bereich von 260 bis 310°C während einer Dauer im Bereich von 15 Minuten bis 1 Stunde durchgeführt wird.
EP84420101A 1983-06-09 1984-06-08 Verfahren zur Erhöhung der Flexibilität von kaltgezogenen Kupferröhren durch Randglühen Expired EP0128846B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84420101T ATE21418T1 (de) 1983-06-09 1984-06-08 Verfahren zur erhoehung der flexibilitaet von kaltgezogenen kupferroehren durch randgluehen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8309942 1983-06-09
FR8309942A FR2547317B3 (fr) 1983-06-09 1983-06-09 Procede d'amelioration de la cintrabilite d'un tube de cuivre ecroui, par recuit partiel

Publications (2)

Publication Number Publication Date
EP0128846A1 EP0128846A1 (de) 1984-12-19
EP0128846B1 true EP0128846B1 (de) 1986-08-13

Family

ID=9289835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84420101A Expired EP0128846B1 (de) 1983-06-09 1984-06-08 Verfahren zur Erhöhung der Flexibilität von kaltgezogenen Kupferröhren durch Randglühen

Country Status (6)

Country Link
EP (1) EP0128846B1 (de)
AT (1) ATE21418T1 (de)
DE (1) DE3460477D1 (de)
ES (1) ES533241A0 (de)
FR (1) FR2547317B3 (de)
IE (1) IE56119B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1006273B (de) * 1954-05-10 1957-04-11 Daimler Benz Ag Mechanische Fernschaltung von Wechselgetrieben fuer Omnibusse und andere Grosskraftfahrzeuge
FR2668170B1 (fr) * 1990-10-18 1992-12-11 Trefimetaux Procede d'amelioration de la cintrabilite de tubes de cuivre a l'etat dur par traitement thermique dynamique.
DE4334536A1 (de) * 1993-10-09 1995-04-13 Kabelmetal Ag Verfahren zur Herstellung von nahtlos gezogenen halbharten/harten Installationsrohren

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3708354A (en) * 1971-06-09 1973-01-02 Anaconda American Brass Co Method and apparatus for measuring and controlling the continuous annealing of a long length of metal tubing
US3774431A (en) * 1972-07-10 1973-11-27 Asea Ab Method of manufacturing copper tubes by means of hydrostatic extrusion and press equipment for carrying out the method

Also Published As

Publication number Publication date
IE841436L (en) 1984-12-09
FR2547317B3 (fr) 1986-02-28
ATE21418T1 (de) 1986-08-15
EP0128846A1 (de) 1984-12-19
ES8503035A1 (es) 1985-02-01
FR2547317A1 (fr) 1984-12-14
ES533241A0 (es) 1985-02-01
DE3460477D1 (en) 1986-09-18
IE56119B1 (en) 1991-04-24

Similar Documents

Publication Publication Date Title
CN109487128B (zh) 一种轨道交通车体顶盖边梁用铝合金型材及其制造方法
NO761779L (de)
EP0128846B1 (de) Verfahren zur Erhöhung der Flexibilität von kaltgezogenen Kupferröhren durch Randglühen
EP0851039B1 (de) Draht aus rostfreies Stahl und Verfahren zur Herstellung
JP2015170422A (ja) 銅コイル材、銅平角線、被覆平角線、銅コイル材の製造方法、及び銅平角線の製造方法
FR2508489A1 (fr) Procede de production d'un acier homogene
FR2543461A1 (fr) Procede pour fabriquer des tubes d'acier sans soudure
JP2008161940A (ja) 加工性に優れた鍛接鋼管およびその製造方法、並びに製造設備列
US3802061A (en) Process for splicing and drawing metallic strand and wire article made thereby
JP6446124B2 (ja) 耐食性および加工性に優れたアルミニウム合金管の製造方法
RU2294247C2 (ru) Способ производства холоднокатаных труб большого и среднего диаметров повышенной точности из сплавов на основе титана
JPS6135249B2 (de)
JP4077859B2 (ja) 加工性に優れた鍛接鋼管およびその製造方法、並びに製造設備列
JP4707318B2 (ja) アルミニウム合金材の接合方法並びにプレス成形用接合材
CN110714674A (zh) 一种无缝铰链及其加工方法
JPH06269836A (ja) チタンおよびチタン合金圧延素材の加熱方法
US2237243A (en) Method of making corrosion resistant metal strip
JP5158838B2 (ja) マグネットワイヤ用無酸素銅線材の試験方法及び無酸素銅マグネットワイヤの製造方法
FR2549490A1 (fr) Procede pour la fabrication d'une piece forgee en acier faiblement allie
US3877495A (en) Method of manufacturing improved filaments for fluorescent lamps
US2237244A (en) Method of making corrosion resistant metal tubes
RU2695095C1 (ru) Способ изготовления тонкостенных осесимметричных корпусов сосудов из легированных сталей, работающих под высоким давлением
RU2148374C1 (ru) Звено пластинчатого транспортера табакорезательной машины
JPH02200750A (ja) 電気伝導性に優れたアルミニウム合金材料およびその製造法
JPS58154451A (ja) 鋳物

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

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

17P Request for examination filed

Effective date: 19850115

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 FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 21418

Country of ref document: AT

Date of ref document: 19860815

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: ING. A. GIAMBROCONO & C. S.R.L.

REF Corresponds to:

Ref document number: 3460477

Country of ref document: DE

Date of ref document: 19860918

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
ITTA It: last paid annual fee
EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 84420101.2

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

Ref country code: GB

Payment date: 20010521

Year of fee payment: 18

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

Ref country code: FR

Payment date: 20010622

Year of fee payment: 18

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

Ref country code: AT

Payment date: 20010625

Year of fee payment: 18

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

Ref country code: SE

Payment date: 20010626

Year of fee payment: 18

Ref country code: NL

Payment date: 20010626

Year of fee payment: 18

Ref country code: CH

Payment date: 20010626

Year of fee payment: 18

Ref country code: BE

Payment date: 20010626

Year of fee payment: 18

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

Ref country code: LU

Payment date: 20010627

Year of fee payment: 18

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

Ref country code: DE

Payment date: 20010727

Year of fee payment: 18

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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: 20020608

Ref country code: GB

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

Effective date: 20020608

Ref country code: AT

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

Effective date: 20020608

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: 20020609

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: 20020630

Ref country code: CH

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

Effective date: 20020630

Ref country code: BE

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

Effective date: 20020630

BERE Be: lapsed

Owner name: *TREFIMETAUX

Effective date: 20020630

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

Ref country code: NL

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

Effective date: 20030101

Ref country code: DE

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

Effective date: 20030101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020608

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: FR

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

Effective date: 20030228

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20030101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST