EP1601472B1 - Method for treating the inner surface of a tube - Google Patents

Method for treating the inner surface of a tube Download PDF

Info

Publication number
EP1601472B1
EP1601472B1 EP04713921A EP04713921A EP1601472B1 EP 1601472 B1 EP1601472 B1 EP 1601472B1 EP 04713921 A EP04713921 A EP 04713921A EP 04713921 A EP04713921 A EP 04713921A EP 1601472 B1 EP1601472 B1 EP 1601472B1
Authority
EP
European Patent Office
Prior art keywords
tube
cleaning treatment
extruded tube
extruded
carried out
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.)
Revoked
Application number
EP04713921A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1601472A1 (en
Inventor
Terho Harju
Aleksi Salminen
Timo NORÈN
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.)
Outokumpu Oyj
Original Assignee
Outokumpu Oyj
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8565774&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1601472(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Outokumpu Oyj filed Critical Outokumpu Oyj
Publication of EP1601472A1 publication Critical patent/EP1601472A1/en
Application granted granted Critical
Publication of EP1601472B1 publication Critical patent/EP1601472B1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0436—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided with mechanical cleaning tools, e.g. scrapers, with or without additional fluid jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
    • B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass

Definitions

  • the invention relates to a method according to claim 1 for manufacturing a copper or copper alloy tube.
  • the invention relates to a cleaning treatment carried out on the inner surface of an extruded tube before the tube is worked to its final size.
  • a solid metal billet is by means of a mandrel worked to the form of a tube.
  • lubricating the mandrel surface there are used for instance graphite-based materials, the contents of which may be harmful in the further processing of the tubes.
  • Hot extruded tube billets, i.e. extruded tubes are thereafter drawn to their final size. After extrusion, the extruded tubes can also be worked to their final size by rolling.
  • the object of the present invention is to introduce a novel method for manufacturing copper or copper alloy tubes, in which method the inner surface of the extruded tube is subjected to a cleaning treatment before the tube is worked to its final size.
  • the invention relates to a method for manufacturing copper or copper alloy tube, which method includes an extrusion step and at least one working step for working the tube to its final size, and according to which method, the tube inner surface is subjected to a cleaning treatment, so that the cleaning treatment is performed on the inner surface of the extruded tube before the tube is worked to its final size.
  • a tube means an end product.
  • it is possible to essentially improve the quality of the inner surface of metal tubes, such as copper tubes.
  • a tube is worked to its final size by drawing an extruded tube at least in one step.
  • the cleaning treatment is carried out essentially between the extrusion step and the drawing step.
  • the tube is worked to its final size by rolling the extruded tube at least in one step. Now the cleaning treatment is carried out essentially between the extrusion step and the rolling step.
  • the cleaning treatment is carried out mechanically.
  • One method according to the invention is that the cleaning treatment is carried out by treating the inner surface of the extruded tube with a cleaning device that is made of an essentially harder material than the inner surface.
  • the employed cleaning device is a steel brush. In this fashion, impurities are advantageously detached from the inner surface.
  • the cleaning device is moved along the inner surface of the extruded tube by means of magnets.
  • the cleaning device is moved along the inner surface of the extruded tube by means of an elongate shaft.
  • the extruded tube is moved with respect to the cleaning device.
  • the cleaning treatment is carried out by grain blasting, such as sand blasting.
  • the inner surfaces of the extruded tube are blasted by gas.
  • Another way according to the invention is that after a mechanical cleaning treatment, the inner surfaces of the extruded tube are washed by liquid.
  • the tube is subjected to a coating treatment after working the tube to its final size.
  • An extruded tube treated according to the invention makes it easier to perform further processing, such as metal coating.
  • further processing such as metal coating.
  • the carbon content of the inner surfaces of tube end products can be controlled better than in the prior art.
  • savings in the expenses are achieved both in employed work and materials, as well as in the pretreatment steps that require metal coating.
  • the processing of a tube that in the final measures has an outer diameter of 54 millimeters from an extruded tube by applying the method according to the invention.
  • the example describes how the inner surface of the extruded tube was cleaned, and how the cleaned extruded tube behaved in test drawings in comparison with a regular uncleaned extruded tube. After test drawings and washings, the inner surface was observed by various different surface test methods. In addition, there was observed the metallic coatability of tubes manufactured according to the invention.
  • the tubes under comparison were subjected to a degreasing, pickling and coating treatment.
  • the layer thickness of a metallic coating was larger by about 20%, and the parameter describing the adhesion and integrity of the coating was over 5 times better in the tube that was made of the mechanically cleaned extruded tube. It was also found out that in the case of an uncleaned extruded tube, the graphite-containing drawing grooves on the inner surface were clearly visible in the coating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Heat Treatment Of Articles (AREA)
  • Physical Vapour Deposition (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
EP04713921A 2003-03-07 2004-02-24 Method for treating the inner surface of a tube Revoked EP1601472B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20030344 2003-03-07
FI20030344A FI115120B (sv) 2003-03-07 2003-03-07 Förfarande för behandling av insidan av ett rör
PCT/FI2004/000086 WO2004078372A1 (en) 2003-03-07 2004-02-24 Method for treating the inner surface of a tube

Publications (2)

Publication Number Publication Date
EP1601472A1 EP1601472A1 (en) 2005-12-07
EP1601472B1 true EP1601472B1 (en) 2008-03-19

Family

ID=8565774

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04713921A Revoked EP1601472B1 (en) 2003-03-07 2004-02-24 Method for treating the inner surface of a tube

Country Status (8)

Country Link
EP (1) EP1601472B1 (sv)
AT (1) ATE389466T1 (sv)
DE (1) DE602004012535T2 (sv)
EA (1) EA007545B1 (sv)
ES (1) ES2303941T3 (sv)
FI (1) FI115120B (sv)
TW (1) TW200500154A (sv)
WO (1) WO2004078372A1 (sv)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08213812A (ja) * 1995-02-06 1996-08-20 Sumitomo Electric Ind Ltd 導波管の製造方法及び導波管

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU67959A1 (sv) * 1973-07-06 1975-04-11
US4445350A (en) * 1980-11-29 1984-05-01 Kabushiki Kaisha Kobe Seiko Sho Extrusion method using hot lubricant
FR2623110B1 (fr) * 1987-11-18 1990-12-28 Virax Sa Procede de decapage mecanique de la paroi interne des extremites des tubes ronds ou de section curviligne et outil de brossage pour la mise en oeuvre de ce procede
DE4334536A1 (de) * 1993-10-09 1995-04-13 Kabelmetal Ag Verfahren zur Herstellung von nahtlos gezogenen halbharten/harten Installationsrohren

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08213812A (ja) * 1995-02-06 1996-08-20 Sumitomo Electric Ind Ltd 導波管の製造方法及び導波管

Also Published As

Publication number Publication date
EP1601472A1 (en) 2005-12-07
WO2004078372A1 (en) 2004-09-16
TW200500154A (en) 2005-01-01
FI115120B (sv) 2005-03-15
EA200501239A1 (ru) 2006-02-24
FI20030344A (sv) 2004-09-08
ATE389466T1 (de) 2008-04-15
FI20030344A0 (sv) 2003-03-07
ES2303941T3 (es) 2008-09-01
EA007545B1 (ru) 2006-10-27
DE602004012535T2 (de) 2009-05-07
DE602004012535D1 (de) 2008-04-30

Similar Documents

Publication Publication Date Title
JP4271573B2 (ja) ヘッダー加工用金属線材の製造方法
KR920007834B1 (ko) 와이어로드의 연속인발방법
WO2006100860A1 (ja) マグネシウム溶接線
EP1601472B1 (en) Method for treating the inner surface of a tube
US20090071221A1 (en) Mandrel Bar for High-Alloy Rolling, Method for Surface Treating a Mandrel Bar, Method for Producing Mandrel Bar, and Method for Operating Seamless Pipe Mill
JP3173441B2 (ja) 金属材料の熱間押出方法
JP4153981B2 (ja) 押出成形方法
EP1311369A1 (de) Verfahren und vorrichtung zur entfernung metallischer verunreinigungen
JPH05154537A (ja) 金属線材の伸線方法および装置
DE102018117405A1 (de) Verfahren zum Entzundern eines Kupferausgangsmaterials für ein Fertigen eines Kupferproduktes und Kupferprodukt
JPS58148016A (ja) チタン線またはチタン合金線の製造方法
JP2591386B2 (ja) 熱間圧延用潤滑剤およびその潤滑剤を使用した管内面潤滑方法
JP2002224735A (ja) 金属材料の加工方法
EP1579928B1 (de) Verfahren zum Entfernen von Zunder- und Rostschichten von metallischem Umformgut
JPH07292486A (ja) 冷間加工のための被膜および潤滑剤を除去する方法および装置
JP3503724B2 (ja) 軸受用冷間引抜き加工線材の製造方法
JP3460292B2 (ja) オーステナイト系ステンレス鋼製深穴部品およびその製造方法
JPH09141491A (ja) アーク溶接用ワイヤの製造方法
JP2005177816A (ja) 冷間引抜用潤滑油および潤滑被膜、並びに冷間引抜鋼管の製造方法
JP3783676B2 (ja) Ｎｉ基合金管の引抜加工方法
JPH08224611A (ja) 継目無鋼管の浸炭防止方法
JP2959903B2 (ja) 回転ホイール式連続押出法にて用いる押出素材及びその製造方法
US20160303628A1 (en) Method and device for coating scaled forming products with a lubricant
DE3050428T1 (de) Verfahren zur Herstellung von Messingrohren
JPH09150231A (ja) Ｔｉ合金の鍛造加工方法

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

17P Request for examination filed

Effective date: 20050825

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 602004012535

Country of ref document: DE

Date of ref document: 20080430

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

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

Ref country code: FI

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: 20080319

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

Ref country code: AT

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: 20080319

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2303941

Country of ref document: ES

Kind code of ref document: T3

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

Ref country code: SI

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: 20080319

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

Ref country code: PT

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: 20080826

Ref country code: SE

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: 20080619

ET Fr: translation filed
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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080319

Ref country code: RO

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: 20080319

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: WIELAND-WERKE AG

Effective date: 20081217

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

Ref country code: DK

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: 20080319

RDAF Communication despatched that patent is revoked

Free format text: ORIGINAL CODE: EPIDOSNREV1

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

Ref country code: EE

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: 20080319

Ref country code: BG

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: 20080619

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

Ref country code: ES

Payment date: 20090220

Year of fee payment: 6

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

Ref country code: CZ

Payment date: 20090219

Year of fee payment: 6

Ref country code: DE

Payment date: 20090226

Year of fee payment: 6

Ref country code: SK

Payment date: 20090220

Year of fee payment: 6

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

Ref country code: GB

Payment date: 20090302

Year of fee payment: 6

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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

Ref country code: BE

Payment date: 20090224

Year of fee payment: 6

RDAG Patent revoked

Free format text: ORIGINAL CODE: 0009271

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

Free format text: STATUS: PATENT REVOKED

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

Ref country code: IT

Payment date: 20090221

Year of fee payment: 6

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

27W Patent revoked

Effective date: 20090518

GBPR Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state

Effective date: 20090518

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

Ref country code: CY

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: 20080319

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

Ref country code: CH

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 20080319

Ref country code: LI

Free format text: LAPSE BECAUSE OF THE APPLICANT RENOUNCES

Effective date: 20080319

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

Ref country code: FR

Payment date: 20090227

Year of fee payment: 6

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

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: 20080620

REG Reference to a national code

Ref country code: SK

Ref legal event code: MM4A

Ref document number: E 3613

Country of ref document: SK

Effective date: 20100224