ATE504366T1 - METHOD FOR PRODUCING ALLOY TUBES FOR HEAT EXCHANGERS USING PRECIPITATION HARDENING USING AN UNDERWATER EXTRUSION PROCESS - Google Patents

METHOD FOR PRODUCING ALLOY TUBES FOR HEAT EXCHANGERS USING PRECIPITATION HARDENING USING AN UNDERWATER EXTRUSION PROCESS

Info

Publication number
ATE504366T1
ATE504366T1 AT07425533T AT07425533T ATE504366T1 AT E504366 T1 ATE504366 T1 AT E504366T1 AT 07425533 T AT07425533 T AT 07425533T AT 07425533 T AT07425533 T AT 07425533T AT E504366 T1 ATE504366 T1 AT E504366T1
Authority
AT
Austria
Prior art keywords
pipe
subjecting
blank
hardening
precipitation
Prior art date
Application number
AT07425533T
Other languages
German (de)
Inventor
Niccolo Ammannati
Elena Martellucci
Claudio Montessoro
Original Assignee
Kme Italy S P A
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 Kme Italy S P A filed Critical Kme Italy S P A
Application granted granted Critical
Publication of ATE504366T1 publication Critical patent/ATE504366T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS 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, rods or 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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • 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
    • C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Extrusion Of Metal (AREA)

Abstract

Production method for heat exchanger pipes comprising the following stages: a) production of a billet in an alloy suitable for hardening through precipitation; b) direct hot extrusion under hydrostatic head in a water bath, of the billet previously heated to a temperature equal to or higher than the solution heat treatment of the alloy, in order to construct an extruded pipe blank of a pre-determined size; c) cold rolling of the extruded pipe blank to obtain a rolled blank having a reduced transversal measurement and consequently having an increased length; d) subjecting the rolled blank to a straight drawing process to obtain a semi-finished pipe; e) subjecting the semi-finished pipe to spinner drawing to reduce the transversal measurement and consequently, to obtain a pipe having its definitive size; f) subjecting the pipe to annealing in a tunnel furnace in a manner to determine the hardening of the pipe through precipitation.
AT07425533T 2007-08-14 2007-08-14 METHOD FOR PRODUCING ALLOY TUBES FOR HEAT EXCHANGERS USING PRECIPITATION HARDENING USING AN UNDERWATER EXTRUSION PROCESS ATE504366T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425533A EP2027947B1 (en) 2007-08-14 2007-08-14 Method for the production of alloy pipes for heat exchangers using precipitation hardening through underwater extrusion

Publications (1)

Publication Number Publication Date
ATE504366T1 true ATE504366T1 (en) 2011-04-15

Family

ID=38805774

Family Applications (1)

Application Number Title Priority Date Filing Date
AT07425533T ATE504366T1 (en) 2007-08-14 2007-08-14 METHOD FOR PRODUCING ALLOY TUBES FOR HEAT EXCHANGERS USING PRECIPITATION HARDENING USING AN UNDERWATER EXTRUSION PROCESS

Country Status (6)

Country Link
EP (1) EP2027947B1 (en)
AT (1) ATE504366T1 (en)
DE (1) DE602007013750D1 (en)
ES (1) ES2366979T3 (en)
PL (1) PL2027947T3 (en)
PT (1) PT2027947E (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101961730A (en) * 2010-09-27 2011-02-02 苏州奕欣特钢管业有限公司 Method for making steel tube
CN102581061B (en) * 2012-03-09 2015-04-15 泉州中宇卫浴科技实业有限公司 Production method for seamless brass pipe
CN102699103A (en) * 2012-06-11 2012-10-03 常熟市旋力轴承钢管有限公司 Preparation method of 20CrMo steel pipe
CN103567253B (en) * 2012-07-19 2015-09-02 常州市武进长虹结晶器有限公司 The manufacture craft of major diameter copper pipe
FR2995383B1 (en) * 2012-09-12 2015-04-10 Kme France Sas COPPER ALLOYS FOR HEAT EXCHANGERS
CN102974645B (en) * 2012-11-16 2015-05-13 宝鸡市鼎裕钛业有限公司 High-accuracy TA18 titanium alloy pipe preparation method
CN102974646B (en) * 2012-12-20 2015-02-04 西南铝业（集团）有限责任公司 Manufacturing process of aluminum alloy water-drop-shaped thin-wall tubular material
JP6360363B2 (en) * 2014-06-18 2018-07-18 株式会社Uacj Copper alloy tube
CN105195547A (en) * 2015-09-07 2015-12-30 闫建平 Production method of small-batch cold-drawn profiled bars
CN114525461B (en) * 2022-01-19 2023-03-14 江西铜业技术研究院有限公司 Method for preparing fine-grain KFC strip and fine-grain KFC strip

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817261A1 (en) * 1977-05-09 1978-11-23 Alusuisse Aluminium-silicon-magnesium alloy - for prodn. of seamless tubes
JPS5997714A (en) * 1982-11-27 1984-06-05 Kobe Steel Ltd High temperature hot hydrostatic extruding method of brass pipe
US6248189B1 (en) * 1998-12-09 2001-06-19 Kaiser Aluminum & Chemical Corporation Aluminum alloy useful for driveshaft assemblies and method of manufacturing extruded tube of such alloy
JP2004292917A (en) * 2003-03-27 2004-10-21 Kobe Steel Ltd Method of producing copper alloy smooth tube for heat exchanger, and method of producing copper alloy internally grooved tube for heat exchanger

Also Published As

Publication number Publication date
EP2027947B1 (en) 2011-04-06
PT2027947E (en) 2011-07-12
PL2027947T3 (en) 2011-09-30
EP2027947A1 (en) 2009-02-25
DE602007013750D1 (en) 2011-05-19
ES2366979T3 (en) 2011-10-27

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