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GB706015A - Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements - Google Patents

  • ️Wed Mar 24 1954
Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements

Info

Publication number
GB706015A
GB706015A GB1625950A GB1625950A GB706015A GB 706015 A GB706015 A GB 706015A GB 1625950 A GB1625950 A GB 1625950A GB 1625950 A GB1625950 A GB 1625950A GB 706015 A GB706015 A GB 706015A Authority
GB
United Kingdom
Prior art keywords
pipe
austenitic
ferritic
steel
tube
Prior art date
1950-06-29
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
GB1625950A
Inventor
Thomas Basil Webb
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.)
Babcock International Ltd
Original Assignee
Babcock and Wilcox Ltd
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.)
1950-06-29
Filing date
1950-06-29
Publication date
1954-03-24
1950-06-29 Application filed by Babcock and Wilcox Ltd filed Critical Babcock and Wilcox Ltd
1950-06-29 Priority to GB1625950A priority Critical patent/GB706015A/en
1954-03-24 Publication of GB706015A publication Critical patent/GB706015A/en
Status Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
    • B23K9/232—Arc welding or cutting taking account of the properties of the materials to be welded of different metals
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • F28F21/083—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys from stainless steel
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Arc Welding In General (AREA)

Abstract

706,015. Uniting by fusion. BABCOCK & WILCOX, Ltd. June 25, 1951 [June 29, 1950], No. 16259/50. Class 83 (4). [Also in Group XXVIII] In joining a tube of austenitic steel to an element of ferritic steel, a transition piece is formed by butt welding end to end lengths of pipe respectively of austenitic and ferritic steel and machining the inside of the piece to remove material from the weld root and welding end to end the tube and pipe length of austenitic steel and connecting the element and pipe length of ferritic steel. A transition piece 3, Fig. 1, is formed by depositing weld metal 8 in a groove between the chamfered ends of a short austenitic steel pipe 4 and short ferritic steel pipe 5 respectively. After welding and heat treating, e.g. normalizing, the piece 3 is machined to the size of the pipes to be joined internally to the line 9 and externally to the line 10 and the ends of the piece 3 are chamfered at 15, 16. The weld 8 may be non -destructively tested. The austenitic pipe 4 is then welded at 17, Fig. 2, to an austenitic steel pipe 1 of approximately the same composition and the ferritic pipe 5 is welded at 18 to a ferritic steel pipe 2 of approximately the same composition. A suitable austenitic steel comprises 18 per cent chrome and 8-12 per cent nickel while a ferritic steel may contain ¢ per cent molybdenum or 1 per cent chromium. Superheater tubes of austenitic steel which are subjected to high external gas temperatures are joined to superheater tubes of ferritic steel subjected to lower temperatures by a joint as in Fig. 2 described above which is located out of contact with the hot gases. The transition piece may be welded to both tubes on site or to one tube in the factory and one on site. Each austenitic superheater tube is joined by a transition piece to a ferritic tube which is rolled into an outlet header. In a further embodiment an austenitic steel tube 31, Fig. 5, is welded to the austenitic pipe 34 of a transition piece 33 while the ferritic pipe 35 thereof is expanded into a ferritic steel header 32 and seal welded thereto at 51. In a modification the pipe 35 of the transition piece 33 is welded directly to the header 32. According to the Provisional Specification the diameter of the transition piece adjacent the weld uniting them may be greater than that at the ends and further the pipe length material may be more costly than that of the adjacent tube.

GB1625950A 1950-06-29 1950-06-29 Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements Expired GB706015A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1625950A GB706015A (en) 1950-06-29 1950-06-29 Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1625950A GB706015A (en) 1950-06-29 1950-06-29 Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements

Publications (1)

Publication Number Publication Date
GB706015A true GB706015A (en) 1954-03-24

Family

ID=10074086

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1625950A Expired GB706015A (en) 1950-06-29 1950-06-29 Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements

Country Status (1)

Country Link
GB (1) GB706015A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996600A (en) * 1957-03-28 1961-08-15 Griscom Russell Co Method of welding tubular heat exchanger parts
DE1297965B (en) * 1963-04-22 1969-06-19 Welding Inst Process for the production of welded transition pieces
EP1506834A1 (en) * 2003-08-09 2005-02-16 VEGA Grieshaber KG Method, welding device and welding filler for welding a seam between two workpieces, in particular for manufacturing a level measuring device
EP2886236A1 (en) * 2013-12-17 2015-06-24 BAE Systems PLC Rudder tabs
WO2015091681A1 (en) * 2013-12-17 2015-06-25 Bae Systems Plc Rudder tabs
GB2521537B (en) * 2013-12-17 2016-06-01 Bae Systems Plc Method of connecting metals having dissimilar thermal expansion rates
DE102014226492A1 (en) * 2014-12-18 2016-06-23 Sitech Sitztechnik Gmbh Method for connecting fittings for a FeMn-based seat back adjuster

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996600A (en) * 1957-03-28 1961-08-15 Griscom Russell Co Method of welding tubular heat exchanger parts
DE1297965B (en) * 1963-04-22 1969-06-19 Welding Inst Process for the production of welded transition pieces
EP1506834A1 (en) * 2003-08-09 2005-02-16 VEGA Grieshaber KG Method, welding device and welding filler for welding a seam between two workpieces, in particular for manufacturing a level measuring device
EP2886236A1 (en) * 2013-12-17 2015-06-24 BAE Systems PLC Rudder tabs
WO2015091681A1 (en) * 2013-12-17 2015-06-25 Bae Systems Plc Rudder tabs
GB2521537B (en) * 2013-12-17 2016-06-01 Bae Systems Plc Method of connecting metals having dissimilar thermal expansion rates
AU2014368721B2 (en) * 2013-12-17 2019-10-24 Bae Systems Plc A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method
AU2014368721B8 (en) * 2013-12-17 2019-11-07 Bae Systems Plc A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method
DE102014226492A1 (en) * 2014-12-18 2016-06-23 Sitech Sitztechnik Gmbh Method for connecting fittings for a FeMn-based seat back adjuster

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