FR2321958A1 - Flow formed maraging steel for high tensile workpieces - coated with metals to improve corrosion resistance - Google Patents

Flow formed maraging steel for high tensile workpieces - coated with metals to improve corrosion resistance

Info

Publication number
FR2321958A1
FR2321958A1 FR7625293A FR7625293A FR2321958A1 FR 2321958 A1 FR2321958 A1 FR 2321958A1 FR 7625293 A FR7625293 A FR 7625293A FR 7625293 A FR7625293 A FR 7625293A FR 2321958 A1 FR2321958 A1 FR 2321958A1
Authority
FR
France
Prior art keywords
coating
tube
corrosion resistance
coated
workpieces
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Withdrawn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
FR7625293A
Other languages
French (fr)
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm 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
Application filed by Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of FR2321958A1 publication Critical patent/FR2321958A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/154—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
    • 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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14—Spinning
    • B21D22/16—Spinning over shaping mandrels or formers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physical Vapour Deposition (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electrochemical Coating By Surface Reaction (AREA)
  • Chemical Vapour Deposition (AREA)

Abstract

The surface of a relatively short metal tube is partly or completely coated with a metal by a conventional process and then subjected to flow forming to increase its length. The tube is pref. steel and the coating metal is Al, Ni, Cd or Ti, applied either by vapour deposition in high vacuum or electroplating to give a thickness ratio tube wall: coating between 1:0.01 and 1:0.1. After flow forming, the coating metal is pref. oxidised and sealed. A thin, intermediate coating may be applied between the tube and the coating. Used for drums for gas centrifuges, or combustion chambers for rockets. Improves the corrosion resistance of the finished tube, esp. in the bore.
FR7625293A 1975-08-23 1976-08-20 Flow formed maraging steel for high tensile workpieces - coated with metals to improve corrosion resistance Withdrawn FR2321958A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2537623A DE2537623C3 (en) 1975-08-23 1975-08-23 Process for the manufacture of coated metal pipes

Publications (1)

Publication Number Publication Date
FR2321958A1 true FR2321958A1 (en) 1977-03-25

Family

ID=5954698

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7625293A Withdrawn FR2321958A1 (en) 1975-08-23 1976-08-20 Flow formed maraging steel for high tensile workpieces - coated with metals to improve corrosion resistance

Country Status (7)

Country Link
JP (1) JPS5226349A (en)
AU (1) AU1704576A (en)
BR (1) BR7605359A (en)
DE (1) DE2537623C3 (en)
FR (1) FR2321958A1 (en)
IT (1) IT1064962B (en)
ZA (1) ZA765026B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044589A1 (en) * 1980-11-24 1982-06-03 Mannesmann AG, 4000 Düsseldorf METHOD FOR PRODUCING SEAMLESS EXTERNAL PLATED TUBES

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH663455A5 (en) * 1984-04-19 1987-12-15 Balzers Hochvakuum TUBE WITH AN INTERNAL COATING.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB274978A (en) * 1926-05-04 1927-08-04 Henry Samuel Potter Improvements in or relating to the manufacture of hollow metal rods, bars and the like
FR1107343A (en) * 1954-09-06 1955-12-29 Process for the protection of the internal surfaces of various copper objects and articles obtained by this process
FR1458227A (en) * 1965-07-07 1966-03-04 S E B Soc D Emboutissage De Bo Advanced rim for culinary vessels and its manufacture
DE2012125A1 (en) * 1970-03-13 1971-09-23 Koehring Co Roll forming of cylindrical tubing
US3780555A (en) * 1972-04-10 1973-12-25 Sargent Industries Method of making a pipe with refined grain structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB274978A (en) * 1926-05-04 1927-08-04 Henry Samuel Potter Improvements in or relating to the manufacture of hollow metal rods, bars and the like
FR1107343A (en) * 1954-09-06 1955-12-29 Process for the protection of the internal surfaces of various copper objects and articles obtained by this process
FR1458227A (en) * 1965-07-07 1966-03-04 S E B Soc D Emboutissage De Bo Advanced rim for culinary vessels and its manufacture
DE2012125A1 (en) * 1970-03-13 1971-09-23 Koehring Co Roll forming of cylindrical tubing
US3780555A (en) * 1972-04-10 1973-12-25 Sargent Industries Method of making a pipe with refined grain structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044589A1 (en) * 1980-11-24 1982-06-03 Mannesmann AG, 4000 Düsseldorf METHOD FOR PRODUCING SEAMLESS EXTERNAL PLATED TUBES

Also Published As

Publication number Publication date
DE2537623C3 (en) 1980-03-20
BR7605359A (en) 1977-08-16
DE2537623A1 (en) 1977-03-03
ZA765026B (en) 1977-08-31
JPS5226349A (en) 1977-02-26
IT1064962B (en) 1985-02-25
DE2537623B2 (en) 1979-07-26
AU1704576A (en) 1978-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse