GB758432A - A process for the manufacture of tubes of variable thickness, and of tube bends therefrom - Google Patents

A process for the manufacture of tubes of variable thickness, and of tube bends therefrom

Info

Publication number
GB758432A
GB758432A GB3000551A GB3000551A GB758432A GB 758432 A GB758432 A GB 758432A GB 3000551 A GB3000551 A GB 3000551A GB 3000551 A GB3000551 A GB 3000551A GB 758432 A GB758432 A GB 758432A
Authority
GB
United Kingdom
Prior art keywords
tube
tubes
sectors
dies
thickened
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
GB3000551A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB3000551A priority Critical patent/GB758432A/en
Publication of GB758432A publication Critical patent/GB758432A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
    • 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
    • B21C37/065—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 starting from a specific blank, e.g. tailored blank
    • 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
    • B21C37/28—Making tube fittings for connecting pipes, e.g. U-pieces
    • B21C37/283—Making U-pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Abstract

758,432. Making seamless tubes. HUET, A. Dec. 21, 1951, No. 30005/51. Classes 83 (2) and 83 (4). Forging.-A tube is formed with a localized thickening in selected sectors by enlarging the diameter over a section of its length, heating the selected sectors and then deforming the tube to restore the original internal diameter and increase the wall thickness in the heated sectors. A tube b, Fig. 3, with an enlarged diameter portion is heated over the sector AB by blow pipes or electric induction and pressed between dies c, d to form an enlarged portion b1, Fig. 4. The tube may be subsequently re-calibrated internally or a mandrel may be introduced into the tube before it is deformed, the mandrel being cooled or thermally insulated. Alternatively the tube may be cooled internally by circulated air or water to maintain the interior more rigid. Tube bends may be made by bending the tube with the thickened sector on the outside of the bend. Heat exchange elements with multiple bends may be formed from a single tube or from straight tubes connected to short tube bend elements. In a modification tubes are formed with a pair of opposed thickened sectors by heating sectors CF, DE, Fig. 10, and compressing between dies g to form thickened portions h1, h2 and then compressing with further dies H1, H2 to form the final external shape. In another modification tubes heated over sections CF, DE Fig. 12, are formed between opposed dies k, l, the die k having recesses m in which the thickened sector portions n are formed. Specification 756,141 is referred to.
GB3000551A 1951-12-21 1951-12-21 A process for the manufacture of tubes of variable thickness, and of tube bends therefrom Expired GB758432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3000551A GB758432A (en) 1951-12-21 1951-12-21 A process for the manufacture of tubes of variable thickness, and of tube bends therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3000551A GB758432A (en) 1951-12-21 1951-12-21 A process for the manufacture of tubes of variable thickness, and of tube bends therefrom

Publications (1)

Publication Number Publication Date
GB758432A true GB758432A (en) 1956-10-03

Family

ID=10300708

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3000551A Expired GB758432A (en) 1951-12-21 1951-12-21 A process for the manufacture of tubes of variable thickness, and of tube bends therefrom

Country Status (1)

Country Link
GB (1) GB758432A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10210156A1 (en) * 2002-03-07 2003-09-25 Bayerische Motoren Werke Ag Method of producing tubular body in sections with differing thickness involves bending the tube and welding it
DE102007030942A1 (en) * 2007-07-03 2009-01-08 J. Eberspächer GmbH & Co. KG Metal tube i.e. exhaust gas tube, for exhaust gas system of internal combustion engine in motor vehicle, has bended tube section comprising wall thickness varied in circumferential direction in non-deformable condition
EP2177282A1 (en) * 2008-10-16 2010-04-21 Behr GmbH & Co. KG Metal structural component adjusted for load for a heat exchanger, method for producing a structural component adjusted for load
EP2341025A3 (en) * 2009-12-29 2014-05-07 Seiko Epson Corporation Printing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10210156A1 (en) * 2002-03-07 2003-09-25 Bayerische Motoren Werke Ag Method of producing tubular body in sections with differing thickness involves bending the tube and welding it
DE102007030942A1 (en) * 2007-07-03 2009-01-08 J. Eberspächer GmbH & Co. KG Metal tube i.e. exhaust gas tube, for exhaust gas system of internal combustion engine in motor vehicle, has bended tube section comprising wall thickness varied in circumferential direction in non-deformable condition
EP2177282A1 (en) * 2008-10-16 2010-04-21 Behr GmbH & Co. KG Metal structural component adjusted for load for a heat exchanger, method for producing a structural component adjusted for load
EP2341025A3 (en) * 2009-12-29 2014-05-07 Seiko Epson Corporation Printing apparatus

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