DE3760510D1 - Process for improving the corrosion resistance of hard or semi-hard copper fitting tubes - Google Patents

Process for improving the corrosion resistance of hard or semi-hard copper fitting tubes

Info

Publication number
DE3760510D1
DE3760510D1 DE8787103276T DE3760510T DE3760510D1 DE 3760510 D1 DE3760510 D1 DE 3760510D1 DE 8787103276 T DE8787103276 T DE 8787103276T DE 3760510 T DE3760510 T DE 3760510T DE 3760510 D1 DE3760510 D1 DE 3760510D1
Authority
DE
Germany
Prior art keywords
hard
tubes
corrosion resistance
semi
improving
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
DE8787103276T
Other languages
German (de)
Inventor
Martin Dr Bauser
Edmund Klingler
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.)
Wieland Werke AG
Original Assignee
Wieland 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8196808&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3760510(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wieland Werke AG filed Critical Wieland Werke AG
Application granted granted Critical
Publication of DE3760510D1 publication Critical patent/DE3760510D1/en
Expired legal-status Critical Current

Links

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
    • 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
    • C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Heat Treatment Of Articles (AREA)
  • Lubricants (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Metal Extraction Processes (AREA)

Abstract

1. Method to improve the corrosion resistance of hard or half-hard phosphorus-deoxidized copper tubes, drawn to size, by removal of residual lubricant from the tubes inside surface, wherein the tube is heated to a temperature below the range of recristallisation of the tubes, and wherein an oxidizing atmosphere prevails inside the tubes.
DE8787103276T 1987-03-07 1987-03-07 Process for improving the corrosion resistance of hard or semi-hard copper fitting tubes Expired DE3760510D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87103276A EP0281641B1 (en) 1987-03-07 1987-03-07 Process for improving the corrosion resistance of hard or semi-hard copper fitting tubes

Publications (1)

Publication Number Publication Date
DE3760510D1 true DE3760510D1 (en) 1989-10-05

Family

ID=8196808

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787103276T Expired DE3760510D1 (en) 1987-03-07 1987-03-07 Process for improving the corrosion resistance of hard or semi-hard copper fitting tubes

Country Status (3)

Country Link
EP (1) EP0281641B1 (en)
AT (1) ATE45993T1 (en)
DE (1) DE3760510D1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827353A1 (en) * 1988-08-12 1990-02-22 Kabelmetal Ag INTERNAL OXIDIZED TUBES
DE4334536A1 (en) * 1993-10-09 1995-04-13 Kabelmetal Ag Process for the production of seamless drawn semi-hard / hard installation pipes
FI107543B (en) 1998-07-30 2001-08-31 Outokumpu Oy A method for making a copper tube
FI120359B (en) * 2002-12-18 2009-09-30 Cupori Group Oy Method and apparatus for treating an inner surface of a copper or copper alloy tube
DE102007055446A1 (en) * 2007-11-12 2009-05-14 Hansgrohe Ag Provision of water-bearing components from brass alloys with reduced metal ion release

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU67959A1 (en) * 1973-07-06 1975-04-11
FR2308436A1 (en) * 1975-04-25 1976-11-19 Cit Alcatel Avoiding carbon deposits during annealing, from lubricants - in the bore of drawn copper tubes, by sweeping with nitrogen
DE2928084A1 (en) * 1979-07-12 1981-01-29 Kabel Metallwerke Ghh Heat treatment of drawn copper tube - where air is drawn through bore of hot tube for removal of carbon formed by drawing lubricants
DE3003228C2 (en) 1980-01-30 1981-11-26 Wieland-Werke Ag, 7900 Ulm Process for improving the corrosion resistance of installation pipes made of copper

Also Published As

Publication number Publication date
EP0281641A1 (en) 1988-09-14
ATE45993T1 (en) 1989-09-15
EP0281641B1 (en) 1989-08-30

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Legal Events

Date Code Title Description
8363 Opposition against the patent