GB712574A - Improvements in the manufacture of metal tubing - Google Patents

Improvements in the manufacture of metal tubing

Info

Publication number
GB712574A
GB712574A GB2122952A GB2122952A GB712574A GB 712574 A GB712574 A GB 712574A GB 2122952 A GB2122952 A GB 2122952A GB 2122952 A GB2122952 A GB 2122952A GB 712574 A GB712574 A GB 712574A
Authority
GB
United Kingdom
Prior art keywords
tube
welding
pressure
housing
tack
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
GB2122952A
Inventor
Raymond Henry Hobrock
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.)
Bundy Tubing Co
Original Assignee
Bundy Tubing Co
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 Bundy Tubing Co filed Critical Bundy Tubing Co
Priority to GB2122952A priority Critical patent/GB712574A/en
Publication of GB712574A publication Critical patent/GB712574A/en
Expired 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
    • B21C37/156—Making tubes with wall irregularities
    • B21C37/157—Perforations
    • 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
    • B21C37/08—Making tubes with welded or soldered seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

712,574. Making metal tubes ; bending ; welding by pressure. BUNDY TUBING CO. Aug. 23, 1952, No. 21229/52. Classes 83 (2) and 83 (4) A metal tube is formed from a continuous strip of metal 2 by a tube mill 1, having a plurality of rollers, and the longitudinal joint is first tack welded and then heated and subjected to pressure to cause recrystallization growth which extends completely from one tack to another across an interface and thereby completely weld the joint. During its formation a non-oxidizing or reducing gas is introduced into the tube through a pipe 6. The tack welding is effected by rotary electrodes 8 supplied with alternating current and which engage the tube on opposite sides of the seam. The tube then passes into a housing 15 where it is subjected to electrical resistance heating by electrodes 17, 18, 19 supplied with current from a transformer 16<SP>1</SP>, and is fed through a pair of squeezing rolls 20 to effect the pressure welding. A non-oxidizing or reducing gas is admitted to the housing at 21. A water jacketed cooler 22, 23 is disposed adjacent the housing. The tube may be heated uniformly throughout its circumference or it may be heated and plastically deformed only in the vicinity of the joint in which case the edges of the tube may be scalloped or serrated to facilitate the pressure welding. Examples are given of the temperatures at which the recrystallization occurs.
GB2122952A 1952-08-23 1952-08-23 Improvements in the manufacture of metal tubing Expired GB712574A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2122952A GB712574A (en) 1952-08-23 1952-08-23 Improvements in the manufacture of metal tubing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2122952A GB712574A (en) 1952-08-23 1952-08-23 Improvements in the manufacture of metal tubing

Publications (1)

Publication Number Publication Date
GB712574A true GB712574A (en) 1954-07-28

Family

ID=10159369

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2122952A Expired GB712574A (en) 1952-08-23 1952-08-23 Improvements in the manufacture of metal tubing

Country Status (1)

Country Link
GB (1) GB712574A (en)

Similar Documents

Publication Publication Date Title
US2237309A (en) Method and means for making hollow tubular members
US1844407A (en) Heat conducting tube
GB712574A (en) Improvements in the manufacture of metal tubing
GB1347864A (en) Method of producing a welded tube with a helical seam from a helically wound metal strip
US2776474A (en) Method of continuously producing welded pipe
GB554815A (en) Improvements in or relating to the manufacture of finned tublar members for heat exchangers and other purposes
JPH05208203A (en) Manufacture of seamless clad metallic tube
US3882595A (en) Method of producing seamless tubing
US2016380A (en) Method of welding
US1093010A (en) Method of and means for manufacturing metal pipe and tubing.
US1458604A (en) Method for making zinc tubing
US2366978A (en) Welding
GB715437A (en) Improvements in the manufacture of metal tubing
SU122469A1 (en) Method of continuous pipe welding
GB477526A (en) Improvements in the manufacture of hollow tubular metal members
GB808306A (en) Improved process for welding plates, sheets and strip
GB843967A (en) Improvements in or relating to finned tubing having resistance-welded fins
CN113263072A (en) Collinear production process of low-carbon microalloy and high-alloy corrosion-resistant coiled tubing
GB478566A (en) Improvements in or relating to metallic tubing
GB747557A (en) Improvements in or relating to the production of welded tubes
GB955154A (en) Improvements in and relating to finned tubes and method for the production thereof
GB802997A (en) Improvements in or relating to the manufacture of tubing
JPS58168484A (en) Production of low alloy steel pipe
GB231716A (en) Improvements in or relating to a method of and apparatus for continuously welding pipes
GB803759A (en) Improvements in or relating to refrigerator condensers