FR2294235A1 - METHOD AND DEVICE FOR THE SURFICIAL HARDENING OF STRAIGHT OR CURVED HEAT EXCHANGER TUBES, BY DISCHARGE POLISHING - Google Patents

METHOD AND DEVICE FOR THE SURFICIAL HARDENING OF STRAIGHT OR CURVED HEAT EXCHANGER TUBES, BY DISCHARGE POLISHING

Info

Publication number
FR2294235A1
FR2294235A1 FR7537690A FR7537690A FR2294235A1 FR 2294235 A1 FR2294235 A1 FR 2294235A1 FR 7537690 A FR7537690 A FR 7537690A FR 7537690 A FR7537690 A FR 7537690A FR 2294235 A1 FR2294235 A1 FR 2294235A1
Authority
FR
France
Prior art keywords
surficial
hardening
straight
heat exchanger
exchanger tubes
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Withdrawn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
FR7537690A
Other languages
French (fr)
Inventor
Wilhelm Kollbach
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
Mannesmannroehren Werke 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
Priority claimed from DE19742459140 external-priority patent/DE2459140C3/en
Application filed by Mannesmannroehren Werke AG filed Critical Mannesmannroehren Werke AG
Publication of FR2294235A1 publication Critical patent/FR2294235A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B39/00—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor
    • B24B39/04—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution
    • B24B39/045—Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone; Accessories therefor designed for working external surfaces of revolution the working tool being composed of a plurality of working rolls or balls
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
    • C21D7/08—Modifying the physical properties of iron or steel by deformation by cold working of the surface by burnishing or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
FR7537690A 1974-12-12 1975-12-02 METHOD AND DEVICE FOR THE SURFICIAL HARDENING OF STRAIGHT OR CURVED HEAT EXCHANGER TUBES, BY DISCHARGE POLISHING Withdrawn FR2294235A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742459140 DE2459140C3 (en) 1974-12-12 Device for surface consolidation of heat exchanger tubes

Publications (1)

Publication Number Publication Date
FR2294235A1 true FR2294235A1 (en) 1976-07-09

Family

ID=5933377

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7537690A Withdrawn FR2294235A1 (en) 1974-12-12 1975-12-02 METHOD AND DEVICE FOR THE SURFICIAL HARDENING OF STRAIGHT OR CURVED HEAT EXCHANGER TUBES, BY DISCHARGE POLISHING

Country Status (6)

Country Link
JP (1) JPS5184765A (en)
CA (1) CA1034358A (en)
FR (1) FR2294235A1 (en)
GB (1) GB1528210A (en)
IT (1) IT1051336B (en)
SE (1) SE7514018L (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511912A1 (en) * 1981-09-01 1983-03-04 Fiz Tech I Akad Nauk METHOD OF CURING PLASTIC DEFORMATION COMPLICATED SHAPE SURFACES AND PROCESSED PIECES IN ACCORDANCE WITH THE METHOD
EP0137684A2 (en) * 1983-08-31 1985-04-17 International Business Machines Corporation Surface finishing process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1094869A (en) * 1996-07-29 1998-04-14 Toyota Motor Corp Method for removing cast defect
JP3610716B2 (en) * 1997-01-23 2005-01-19 トヨタ自動車株式会社 Casting seal surface processing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511912A1 (en) * 1981-09-01 1983-03-04 Fiz Tech I Akad Nauk METHOD OF CURING PLASTIC DEFORMATION COMPLICATED SHAPE SURFACES AND PROCESSED PIECES IN ACCORDANCE WITH THE METHOD
EP0137684A2 (en) * 1983-08-31 1985-04-17 International Business Machines Corporation Surface finishing process
EP0137684A3 (en) * 1983-08-31 1986-12-17 International Business Machines Corporation Surface finishing process

Also Published As

Publication number Publication date
IT1051336B (en) 1981-04-21
SE7514018L (en) 1976-06-14
CA1034358A (en) 1978-07-11
GB1528210A (en) 1978-10-11
JPS5184765A (en) 1976-07-24
DE2459140B2 (en) 1976-10-07
DE2459140A1 (en) 1976-06-24

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Legal Events

Date Code Title Description
ST Notification of lapse