GB1037486A - An improved method of and installation for the continuous manufacture of welded metal tubes - Google Patents

An improved method of and installation for the continuous manufacture of welded metal tubes

Info

Publication number
GB1037486A
GB1037486A GB2218863A GB2218863A GB1037486A GB 1037486 A GB1037486 A GB 1037486A GB 2218863 A GB2218863 A GB 2218863A GB 2218863 A GB2218863 A GB 2218863A GB 1037486 A GB1037486 A GB 1037486A
Authority
GB
United Kingdom
Prior art keywords
tube
strip
rollers
mill
measuring
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
GB2218863A
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.)
KOCHS WERMELSKIRCHEN GmbH
Original Assignee
KOCHS WERMELSKIRCHEN GmbH
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 FR899665A external-priority patent/FR1332632A/en
Priority claimed from FR899663A external-priority patent/FR1332630A/en
Application filed by KOCHS WERMELSKIRCHEN GmbH filed Critical KOCHS WERMELSKIRCHEN GmbH
Publication of GB1037486A publication Critical patent/GB1037486A/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
    • B21C37/08—Making tubes with welded or soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K13/00—Welding by high-frequency current heating
    • B23K13/01—Welding by high-frequency current heating by induction heating
    • B23K13/02—Seam welding
    • B23K13/025—Seam welding for tubes

Abstract

1,037,486. Making longitudinally reamed tubing; welding by pressure. KOCHS WERMELSKIRCHEN G.m.b.H., [trading as FRIEDRICH KOCHS]. June 4, 1963 [June 4, 1962 (2)], No. 22188/63. Headings B3A and B3R. A method for the continuous manufacture of welded metal tubes from metal strip comprises the steps of forming the strip into an open tube, bringing the edges of the strip together to weld same by induced heat, resistance heating the closed tube, calibrating the tube in the hot state and then cutting the tube into desired lengths. Strip 12 is formed by rollers 3 into tubing the longitudinal seam of which is induction welded by means 4 working at, for example 1-10 or 400 kc. and including an inductor 6 with or without a magnetic core. The tube is then resistance heated by means 7 which may include rollers or other contacts or inductors supplied with current. The hot tube then passes to a calibrating rolling mill 9, the rolls of which may be driven faster than the rollers 3 to stretch the tube between the means 7 and mill 9. The tube 13 is then cut off by a saw or shear 11. A motor 14 driving the rollers 3 and a motor 15 driving the rolls of the mill 9 may be controlled by means 18 measuring the thickness of the strip, and by means measuring the tractive pull on the tube and comprising detectors 16, 17 of the speeds of rotation of the motors or a device for measuring the torque of the motor 15. The mill 9 may be driven through a Ward-Leonard set. The thickness of the tube may be measured at 20. The intensity of the heating current to the device may be controlled rather than the tractive pull. Hydraulic drives may be used.
GB2218863A 1962-06-04 1963-06-04 An improved method of and installation for the continuous manufacture of welded metal tubes Expired GB1037486A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR899665A FR1332632A (en) 1962-06-04 1962-06-04 Improved method and apparatus for the continuous manufacture of welded metal tubes
FR899663A FR1332630A (en) 1962-06-04 1962-06-04 Method and device for adjusting the thickness of a metal tube during manufacture

Publications (1)

Publication Number Publication Date
GB1037486A true GB1037486A (en) 1966-07-27

Family

ID=26196012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2218863A Expired GB1037486A (en) 1962-06-04 1963-06-04 An improved method of and installation for the continuous manufacture of welded metal tubes

Country Status (5)

Country Link
AT (1) AT289692B (en)
DE (1) DE1210502C2 (en)
ES (1) ES288708A1 (en)
GB (1) GB1037486A (en)
NL (1) NL293581A (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE429632C (en) * 1923-07-31 1926-06-01 Hans Willi Roth Electric welding process
DE724547C (en) * 1933-05-14 1942-08-28 August Seuthe Maschf Machine for the production of welded pipes
US2380107A (en) * 1941-05-02 1945-07-10 Bundy Tubing Co Tubing
DE974355C (en) * 1951-11-17 1960-12-15 Phoenix Rheinrohr Ag Vereinigt Process and equipment for the continuous production of welded tubes

Also Published As

Publication number Publication date
AT289692B (en) 1971-05-10
DE1210502B (en) 1973-10-11
DE1210502C2 (en) 1973-10-11
ES288708A1 (en) 1963-08-01
NL293581A (en)

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