WO2004019377A2 - Procede de raccordement metallurgique d'un tube a un element - Google Patents

Procede de raccordement metallurgique d'un tube a un element Download PDF

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Publication number
WO2004019377A2
WO2004019377A2 PCT/US2003/024037 US0324037W WO2004019377A2 WO 2004019377 A2 WO2004019377 A2 WO 2004019377A2 US 0324037 W US0324037 W US 0324037W WO 2004019377 A2 WO2004019377 A2 WO 2004019377A2
Authority
WO
WIPO (PCT)
Prior art keywords
tube
flange
welding
brazing
electrode
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.)
Ceased
Application number
PCT/US2003/024037
Other languages
English (en)
Other versions
WO2004019377A3 (fr
Inventor
Venkatasubramanian Ananthanarayanan
Dharmendra Ramachandra, (Dharam), M.
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 US10/226,179 external-priority patent/US6847001B2/en
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to AU2003257100A priority Critical patent/AU2003257100A1/en
Publication of WO2004019377A2 publication Critical patent/WO2004019377A2/fr
Publication of WO2004019377A3 publication Critical patent/WO2004019377A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/06—Resistance welding; Severing by resistance heating using roller electrodes
    • B23K11/065—Resistance welding; Severing by resistance heating using roller electrodes for welding curved planar seams
    • B23K11/066—Resistance welding; Severing by resistance heating using roller electrodes for welding curved planar seams of tube sections
    • 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
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0004—Resistance soldering
    • 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/02—Pressure butt welding
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/28—Seam welding of curved planar 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/002—Crimping or bending the workpieces at the joining area
    • 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/006—Filling of continuous seams for cylindrical workpieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
    • F16L13/02—Welded joints
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes

Definitions

  • the present invention relates generally to metallurgy, and more particularly to a method for metallurgically joining a tube to a member.
  • Resistance welding also known as electric-resistance welding
  • electric-resistance welding is a known metallurgical process wherein metal is heated by its own resistance to a semi-fused (i.e., soft) or fused (i.e., molten) state by the passage of very heavy electric currents for very short lengths of time and then welded by the application of pressure.
  • Conventional resistance seam welding is a known welding process which creates a tube or box from a piece of sheet metal by first bending the sheet metal into a tube or box shape having overlapping lengthwise ⁇ edges. Two welding electrode wheels are used which rotate and contact the overlapping edges and which relatively lengthwise move along the overlapping edges to form the seam weld to create the tube or box.
  • Gas metal arc welding uses a consumable metal wire as one electrode and the parts as another electrode, and moves the consumable metal wire (or the parts) to draw an arc and weld the parts together.
  • the welding is accompanied by a gas (such as a mixture of argon and carbon dioxide) to prevent oxidation and stabilize the arc.
  • gas such as a mixture of argon and carbon dioxide
  • Such gas metal arc welding is well known.
  • solid metal wire or metal core wire i.e., an annular-solid wire whose core is filled with metal powder such as a mixture of metal, alloy and/or oxide powders
  • the wire at a positive electrical welding potential and with the parts electrically grounded.
  • the welding arc creates a molten weld puddle which results in the welding together of the parts.
  • Gas metal arc welding requires expensive welding equipment, the molten weld puddle tends to flow away from the joint area depending on weld position resulting in welds of inconsistent quality, and the process requires a long cycle time between welds.
  • Conventional methods for attaching parts together also include friction welding.
  • To join two tubes together end to end one of the tubes is rotated about its longitudinal axis, and the tube ends are pressed together, wherein friction causes heating of the ends creating the weld.
  • To join a tube to a plate the tube is rotated about its longitudinal axis, and the tube end and the plate are pressed together, wherein friction causes heating creating the weld.
  • Friction welding requires expensive welding equipment, and the process requires a long cycle time between welds. Also, friction welding may not be applicable if no part to be welded can be rotated.
  • a method of the invention is for metallurgically joining a first tube to a member and includes steps a) through g).
  • Step a) mcludes obtaining a first tube having a flange
  • step b) includes obtaining a member.
  • Step c) includes obtaining a welding brazing first electrode wheel having a first axis of rotation and having a first rim.
  • Step d) includes positioning the first tube and the member with the flange contacting the member directly and/or indirectly through an intervening welding brazing joiriing material.
  • Step e) includes positioning the first rim of the first electrode wheel in direct contact with the flange.
  • Step f) includes, after steps a) through e), creating a resistance welding/brazing current path through the flange and the member using at least the first electrode wheel creating a seam weld/braze zone which includes at least some of the flange and at least some of the member.
  • Step g) includes, during step f), rotating the first electrode wheel about the first axis of rotation.
  • Figure 1 is a block diagram of the first method of the invention for metallurgically joining a tube to a member
  • Figure 2 is a schematic, side cross-sectional view of the first embodiment of first and second tubes and welding electrodes used in a first example of the second method, showing the tubes aligned;
  • Figure 3 is a view, as in Figure 2, but showing the two tubes metallurgically joined together with the welding electrodes removed;
  • Figure 4 is a view, as in Figure 2, but showing a second embodiment of the tubes and welding electrodes used in a second example of the second method;
  • Figure 5 is a view, as in Figure 2, but showing a third embodiment of the tubes and welding electrodes used in an alternate second example of the second method
  • Figure 6 is a schematic, side cross-sectional view of an embodiment of a tube, a plate, and welding electrodes used in the third method, showing the tube aligned with the plate;
  • Figure 7 is a schematic, side cross-sectional view of an embodiment of two tubes positioned for joining together by a particular method of the invention
  • Figure 8 is a view, as in Figure 7, but of a tube having a non-folded end flange positioned for joining to a plate;
  • Figure 9 is a view, as in Figure 7, but of a tube having a folded end flange positioned for joining to a plate and with the welding/brazing electrode wheels omitted for clarity;
  • Figure 10 is a view, as in Figure 7, but of a tube having a folded end flange positioned for joining to a thicker solid having a through hole;
  • Figure 11 is a view, as in Figure 1, but of a tube having a non-folded end flange positioned for joining to a thicker solid having a through hole and with the electrodes omitted for clarity;
  • Figure 12 is a view, as in Figure 7, but with an intervening welding brazing joining material disposed between the flange of the first tube and the member and with the welding/brazing electrode wheels omitted for clarity; and
  • Figure 13 is a view, as in Figure 7, but showing both a "transverse- folded" flange and a "centerline-folded” flange and with the electrodes omitted for clarity.
  • a first method of the invention is for metallurgically joining a tube to a member and is shown in block diagram form in Figure 1.
  • the first method includes steps a) through d).
  • Step a) is labeled as Obtain Tube Having A Fold" in block 10 of Figure 1.
  • Step a) includes obtaining a tube having a longitudinal axis and having an end portion, wherein the end portion includes a fold, and wherein the fold includes longitudinally-spaced-apart first and second fold portions.
  • a "fold" of an end portion of a tube is a fold of the tube wall of an end portion of the tube.
  • Step b) is labeled in block 12 of Figure 1 as "Obtain Member".
  • Step b) includes obtaining a member.
  • Step c) is labeled in block 14 of Figure 1 as "Dispose Tube and Member".
  • Step c) includes, after steps a) and b), disposing the tube and the member with the end portion contacting the member.
  • Step d) is labeled as "Create Weld Zone" in block 16 of Figure 1.
  • Step d) includes, after step c), creating a resistance welding current path through the tube and the member proximate the end portion and relatively moving the end portion deformingly against the member creating a weld zone which includes at least some of the end portion and at least some of the member.
  • proximate includes, without limitation, the term “at”.
  • relatively moving is meant moving the end portion with the member stationary or moving the member with the end portion stationary or moving both the end portion and the member, as is within the level of skill of the artisan.
  • step d) does not melt any of the end portion and does not melt any of the member.
  • step d) melts at least some of the end portion or at least some of the member or melts at least some of the end portion and at least some of the member.
  • the tube is a substantially right- circular cylindrical tube.
  • the tube has a cross section which has a substantially rectangular shape, wherein the cutting plane for the cross section is perpendicular to the longitudinal axis of the tube.
  • Other examples of the tube are left to the artisan.
  • the member is a second tube having a straight second end portion, having a second end portion having a second fold with longitudinally-spaced-apart fold portions, or having a second end portion of arbitrary shape, wherein step c) coaxially aligns the tubes end-to- end and disposes the tubes with end portion to end portion contact.
  • the second tube is a substantially right-circular cylindrical tube.
  • the second tube has a cross section which has a substantially rectangular shape, wherein the cutting plane for the cross section is perpendicular to the longitudinal axis of the second tube.
  • the member is a plate. Other examples of members and variations of second tubes are left to the artisan.
  • the fold is an annular fold substantially coaxially aligned with the longitudinal axis, and step d) creates an annular (or non-annular) weld zone.
  • the annular fold is a radiaUy-oulwardly-protruding annular fold.
  • the annular fold is a radially-inwardly-protruding annular fold.
  • the end portion includes at least one additional annular fold coaxially aligned with the longitudinal axis and having two longitudinally spaced-apart fold portions.
  • step d) uses a resistance- welding first electrode contacting the tube proximate the fold and a resistance- welding second electrode contacting the member.
  • a non- electrode support is disposed inside or outside the tube, and in one example extends around the other end of the tube, to radially support the tube and/or to axially support or push the tube during step d).
  • step d) does not melt any of the end portion and does not melt any of the member. In another execution of the first method, step d) melts at least some of the end portion or at least some of the member or at least some of the end portion and at least some of the member.
  • a second method of the invention is for metallurgically joining one tube to another tube and includes steps a) through d).
  • Step a) includes obtaining a first tube 118 having a longitudinal axis 120 and having a first end portion 122, wherein the first end portion includes a first annular fold 124 substantially coaxially aligned with the longitudinal axis 120, and wherein the first annular fold 124 includes longitudinally-spaced-apart first and second fold portions 126 and 128.
  • Step b) includes obtaining a second tube 130 having a second end portion 132.
  • Step c) includes, after steps a) and b), coaxially aligning the first and second tubes 118 and 130 and disposing the first and second tubes 118 and 130 with the first end portion 122 contacting the second end portion 132.
  • Step d) includes, after step c), creating a resistance welding current path through the first and second tubes 118 and 130 proximate the first and second end portions 122 and 132 and relatively longitudinally moving the first end portion 122 deformingly against the second end portion 132 creating an annular weld zone 134 which includes at least some of the first end portion 122 and at least some of the second end portion 132.
  • the second end portion 132 includes a second annular fold 136 having longitudinally spaced-apart third and fourth fold portions 138 and 140, wherein the wall thicknesses of the first and second tubes 118 and 130 are substantially equal, and wherein step c) disposes the first and second tubes 118 and 130 with the second annular fold 136 longitudinally contacting the first annular fold 126.
  • the first and second annular folds 124 and 136 each are radially-outwardly-protruding annular folds.
  • step d) uses an annular resistance- welding first electrode 142 longitudinally contacting the first annular fold 124 and uses an annular resistance-welding second electrode 144 longitudinally contacting the second annular fold 136.
  • Unnumbered arrows in the figures indicate the direction of relative longitudinal movement of the electrodes during step d).
  • the first electrode 142 longitudinally contacts the second electrode 144 at the completion of step d). This ensures that no overheating of the weld zone will occur, as can be appreciated by those skilled in the art.
  • the first and second tubes 118 and 130 comprise low carbon steel such as AISI 1008 to 1010 having an outside diameter of generally 6 millimeters and a thickness of generally 2 millimeters.
  • pulses (totaling 1/3 of a second) of electric current of generally 5,000 amperes (and in one variation 15,000 to 20,000 amperes) are applied while applying a force of generally 300 to 800 pounds to the electrodes/support.
  • the first, second, and/or third methods are not limited to specific materials, dimensions, electric current, and forces, as is understood by those skilled in the art. Any weldable materials such as copper, aluminum alloy, stainless steel, etc. can be used, as can be appreciated by the artisan. The particular choice of electric current, forces, and part dimensions, etc. are within the ordinary level of skill of the artisan.
  • the second end portion 232 of the second tube 230 is a substantially straight end portion having a substantially-longitudinally-facing annular end 246, wherein the second tube 230 has a greater wall thickness than the first tube 218, and wherein step c) disposes the first and second tubes 218 and 230 with the annular end 246 longitudinally contacting the first annular fold 224.
  • the second tube 230 is a nut.
  • the first annular fold 224 is a radially-outwardly-protruding annular fold.
  • step d) uses an annular resistance-welding first electrode 242 longitudinally contacting the first annular fold 224 and uses a resistance- welding second electrode 244 disposed in radial contact with the second end portion 232.
  • the first electrode 242 longitudinally contacts the second electrode 244 at the completion of step d).
  • a non-electrode support 248 contacts the other end of the second tube 230.
  • an annular electrode, not shown, is added inside the second tube. Other arrangements of electrodes and non-electrode supports are left to the artisan.
  • the first annular fold 324 of the first end portion 322 of the first tube 318 protrudes radially outward and longitudinally upward as shown in the figure.
  • the first electrode 342 is disposed outside the first tube 318
  • the second electrode 344 is disposed outside the second tube 330.
  • a non-electrode first support 350 is disposed inside the first tube 318 and extends around the other end of the first tube 318
  • a non-electrode second support 352 is disposed inside the second tube 330 and extends around the other end of the second tube 330.
  • the positions of the first electrode and the first support are interchanged, and the positions of the second electrode and the second support are interchanged.
  • Other embodiments for the second method are left to the artisan.
  • enablements, etc. of the first method applicable to tube-to- tube joining are equally applicable to the second method.
  • a third method of the invention is for metallurgically joining a tube to a plate and includes steps a) through d).
  • Step a) includes obtaining a tube 418 having a longitudinal axis 420 and having an end portion 422, wherein the end portion 422 includes an annular fold 424 substantially coaxially aligned with the longitudinal axis 420, and wherein the annular fold 424 includes longitudinally-spaced-apart first and second fold portions 426 and 428.
  • Step b) includes obtaining a plate 454 having first and second sides 456 and 458.
  • Step c) includes, after steps a) and b), aligning the tube 418 substantially perpendicular to the plate 454 and disposing the tube 418 and the plate 454 with the end portion 422 contacting the second side 458.
  • Step d) includes, after step c), creating a resistance welding current path through the tube 418 and the plate 454 proximate the end portion 422 and relatively longitudinally moving the end portion 422 deformingly against the plate 454 creating an annular weld zone which includes at least some of the end portion 422 and at least some of the plate 454.
  • step d) uses an annular resistance-welding first electrode 442 longitudinally contacting the annular fold 424.
  • step d) uses an annular resistance-welding second electrode 444 which is substantially coaxially aligned with the longitudinal axis 420 and which longitudinally contacts the first side 456 of the plate 454 only outside an area on the first side 456 corresponding to the area on the second side 458 of the plate 454 where the annular fold 424 contacts the second side 458 of the plate 454.
  • the plate 454 is a sheet metal plate. Other implementations and constructions are left to the artisan. Optional examples, enablements, etc.
  • the previously- discussed electrodes are installed in "T"-shaped electrode holders of a resistance welding machine (not shown).
  • each electrode is formed from two sections which are brought together around the tube or on the plate and engage that tube or plate.
  • the electrode sections have surfaces generally corresponding to the shape of the engaged portion of that tube or plate. The electrode sections are attached together before installing the electrode in the corresponding upper or lower one of the "T"-shaped electrode holders of the resistance welding machine.
  • resistance welding is less expensive than gas metal arc welding or friction welding. Resistance welding also has a shorter cycle time between welds than does gas metal arc welding or friction welding.
  • Figures 7-13 give examples of first tubes and members (including members which are second tubes and including members which are non-tubular members with and without through holes).
  • Figure 7 gives an example showing a first tube 510 having a flange 514, wherein the flange 514 is an annular outwardly- extending end flange disposed proximate an end 516 of the first tube 510.
  • the flange 514 is a folded flange having contacting first and second fold portions 518 and 520
  • the member 512 is a second tube 522 having a flange 524 which is an annular outwardly-extending and non-folded end flange.
  • Figure 8 gives another example showing a first tube 526 having a flange 528 which is an annular outwardly-extending and non-folded end flange and showing a member 530 which is a non-tubular member and in particular is a plate (such as a sheet metal plate).
  • Figure 9 gives another example showing a first tube 532 having a flange 534 which is an annular outwardly-extending and folded end flange having spaced-apart first and second fold portions 536 and 538 and showing a member 540 which is a non-tubular member and in particular is a plate (such as a sheet metal plate).
  • Figure 10 gives another example showing a first tube 542 having a flange 544 which is an annular outwardly-extending and folded end flange having contacting first and second fold portions 546 and 548 and showing a member 550 which is a non-tubular member and in particular is a thicker solid having a through hole 552.
  • Figure 11 gives another example showing a first tube 554 having a flange 556 which is an annular outwardly-extending and non- folded end flange and showing a member 558 which is a non-tubular member and in particular is a thicker solid having a through hole 560
  • Figure 12 gives another example showing a first tube 562 having a flange 564, wherein the flange 564 is an annular outwardly-extending end flange.
  • the flange 564 is a folded flange having contacting first and second fold portions 566 and 568
  • the member 570 is a second tube 572 having a flange 574 which is an annular outwardly-extending and non-folded end flange.
  • a welding/brazing joining material 576 is shown disposed on the flange 564 of the first tube 562. In one construction, the welding/brazing joining material 576 is either unattached to the flange and the member or is plated to at least one of the flange and the member.
  • welding/brazing joining materials include welding brazing materials and/or welding joining materials.
  • the flange 564 has at least one groove containing at least some of the welding/brazing joining material 576, wherein the flange 564 outside the groove is in direct contact with the member 570 to facilitate the passage of current between the flange 564 and the member 570.
  • Figure 13 gives another example showing a first tube 578 having a flange 580, wherein the flange 580 is an annular outwardly-extending end flange which is a folded flange folded along a transverse direction which is substantially transverse to the centerline of the tube.
  • the member 582 is a second tube 584 having a flange 586, wherein the flange 586 is an annular outwardly-extending end flange which is a folded flange folded along a direction which is substantially parallel to the centerline of the tube.
  • a particular method of the invention is for metallurgically joining a first tube 510 to a member 512 and includes steps a) through g).
  • Step a) includes obtaining a first tube 510 having a flange 514
  • step b) includes obtaining a member 512.
  • Step c) mcludes obtaining a welding/brazing first electrode wheel 588 having a first axis of rotation 590 and having a first rim 592.
  • Step d) includes disposing the first tube 510 and the member 512 with the flange 514 contacting the member 512 directly and or indirectly through an intervening welding/brazing joining material 576 (seen in Figure 12).
  • Step e) includes disposing the first rim 592 of the first electrode wheel 588 in direct contact with the flange 514.
  • Step f) includes, after steps a) through e), creating a resistance welding/brazing current path through the flange 514 and the member 512 using at least the first electrode wheel 588 creating a first seam weld/braze zone which includes at least some of the flange 514 and at least some of the member 512.
  • Step g) includes, during step f), rotating the first electrode wheel 588 about the first axis of rotation 590.
  • welding/brazing mcludes welding or brazing or partially welding and partially brazing.
  • step d) the welding/brazing joining material 576 (seen in Figure 12) is either unattached to the flange and the member or is plated to at least one of the flange and the member. In one enablement, the welding/brazing material 576 is not used, and in a different enablement, the welding/brazing material 576 is used.
  • the flange 514 is an annular outwardly-extending end flange disposed proximate an end 516 of the first tube 510.
  • the end flange is a non-folded end flange (as seen in Figure 8).
  • the end flange is a folded end flange.
  • the first tube 510 includes a centerline axis 594 at the flange 514, and the first axis of rotation 590 is substantially perpendicular to the centerline axis 594 during step f). It is noted that for a straight first tube, the centerline axis coincides with the longitudinal axis, and that for a curved or bent first tube, the curved or bent centerline at the flange has a direction which defines the centerline axis at the flange. In one modification, there is also included, during step f), the step of applying a force, using at least the first electrode wheel 588, to relatively move the flange 514 deforrningly against the member 512.
  • step f is performed without applying a force to relatively move the flange 514 deforrningly against the member 512.
  • the weld/braze is leak tight, and in another employment, the weld/braze is not leak tight (such as when the weld/braze seam is not a continuous weld/braze seam).
  • the member 512 is a second tube 522 having a flange 524 which is an annular outwardly-extending end flange
  • step d) disposes the first tube 510 and the second tube 522 with the flange 514 of the first tube 510 contacting the end flange of the second tube 522 either directly and/or indirectly through an intervening welding/brazing joining material.
  • step f) also uses the second electrode wheel 596 in creating the resistance welding/brazing current path, and there is additionally included during step f) the step of counter-rotating the second electrode wheel 596 at substantially the same rim speed as that of the first electrode wheel 588.
  • the first and second axes of rotation 590 and 598 are substantially parallel, the first and second tubes 510 and 522 are substantially round, and there is also included during step f) the step of rotating the first and second tubes 510 and 522 in unison about the centerline axis 594 of the first tube 510.
  • the rotatable drive(s), not shown, for rotating the first and second electrode wheels are separate from the rotatable drive(s) for rotating the first and second tubes.
  • the rotating of the tubes at least partially rotatably drives the electrode wheels.
  • the rotating of the electrode wheels at least partially rotatably drives the tubes.
  • the first tube when the first tube is, for example, a square or rectangular tube, the first tube is not rotated about the centerline axis during the welding/brazing. Instead, the flange of the first tube is relatively moved with respect to the first electrode wheel to provide sequential contact of the first electrode wheel with the flange around the perimeter of the first tube.
  • the member 530 is a non-tubular member having opposing first and second surfaces 602 and 604, and step d) disposes the first tube 526 and the member 530 with the flange 528 of the first tube 526 contacting the first surface 602 of the member 530 directly and or indirectly through an intervening welding/brazing joining material.
  • step d) disposes the first tube 526 and the member 530 with the flange 528 of the first tube 526 contacting the first surface 602 of the member 530 directly and or indirectly through an intervening welding/brazing joining material.
  • step f) also uses the second electrode wheel 596 in creating the resistance welding/brazing current path, and there is additionally included during step f) the step of counter-rotating the second electrode wheel 596 at substantially the same rim speed as that of the first electrode wheel 588.
  • the first and second axes of rotation 590 and 598 are substantially parallel, the first tube 526 is substantially round, and there is also included during step f) the step of rotating the first tube 526 and the member 530 in unison about the centerline axis 594.
  • the member 530 is a sheet metal plate.
  • the member 550 is a non-tubular member having a first surface 606, and step d) disposes the first tube 542 and the member 550 with the flange 544 of the first tube 542 contacting the first surface 606 of the member 550 directly and/or indirectly through an intervening welding/brazing joining material.
  • step f) also uses the welding/brazmg electrode 608 in creating the resistance welding/brazing current path.
  • the first tube 542 is substantially round, and there is also included during step f) the step of rotating the first tube 542, the member 550, and the welding/brazmg electrode 608 in unison about the centerline axis 594.
  • An additional particular method of the invention is for metallurgically joining a first tube 510 to a member 512 and includes steps a) through g).
  • Step a) includes obtaining a first tube 510 having a flange 514
  • step b) includes obtaining a member 512.
  • Step c) includes obtaining a first electrode wheel 588 having a first axis of rotation 590 and having a first rim 592.
  • Step d) mcludes disposing the first tube 510 and the member 512 with the flange 514 contacting the member 512 directly 'and/or indirectly through an intervening welding joining material.
  • Step e) includes disposing the first rim 592 of the first electrode wheel 588 in direct contact with the flange 514.
  • Step f) includes, after steps a) through e), creating a resistance welding current path through the flange 514 and the member 512 using at least the first electrode wheel 588 creating a first seam weld zone which includes at least some of the flange 514 and at least some of the member 512.
  • Step g) includes, during step f), rotating the first electrode wheel 588 about the first axis of rotation 590.
  • a further particular method of the invention (seen in Figure 7 with a required welding/brazing joining material 576, here considered to be a brazing joining material, seen in Figure 12) is for metallurgically joining a first tube 510 to a member 512 and includes steps a) through g).
  • Step a) includes obtaining a first tube 510 having a flange 514
  • step b) includes obtaining a member 512.
  • Step c) includes obtaining a first electrode wheel 588 having a first axis of rotation 590 and having a first rim 592.
  • Step d) includes disposing the first tube 510 and the member 512 with the flange 514 contacting the member 512 directly and/or indirectly through an intervening brazing joining material.
  • Step e) includes disposing the first rim 592 of the first electrode wheel 588 in direct contact with the flange 514.
  • Step f) includes, after steps a) through e), creating a resistance brazing current path through the flange 514 and the member 512 using at least the first electrode wheel 588 creating a first seam braze zone which includes at least some of the flange 514 and at least some of the member 512.
  • Step g) includes, during step f), rotating the first electrode wheel 588 about the first axis of rotation 590.
  • a flange such as flange 514, is not an annular flange but has a plurality of widely-circumferentially-separated flange segments at the same or different tube heights.
  • the flange is an inwardly-extending flange.
  • the flange is not an end flange disposed proximate an end of the tube but is a flange disposed at a location which is not proximate an end of the tube.
  • Other variations of flanges are left to the artisan.
  • the first tube such as first tube 510
  • the first tube is a straight tube or is a curved tube (not shown).
  • the first tube is a round tube, a square tube, or a rectangular tube.
  • Other shapes of first tubes are left to the artisan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne un procédé permettant de raccorder métallurgiquement un tube à un élément. Ce procédé consiste à utiliser un tube qui présente une bride; un élément; et une molette de soudage/de brasage qui présente un axe de rotation et un anneau. Le tube et l'élément sont positionnés de sorte que la bride entre en contact avec l'élément de manière directe et/ou indirecte au moyen d'un matériau de raccordement de soudage/de brasage intermédiaire. L'anneau de la molette est positionné en contact direct avec la bride. Un chemin de courant de soudage/de brasage par résistance est créé dans la bride et l'élément au moyen au moins de la molette, créant une zone de soudage/de brasage à la molette qui comprend au moins une partie de la bride et au moins une partie de l'élément. Pendant l'étape de création du chemin de courant, on fait tourner la molette autour de l'axe de rotation.
PCT/US2003/024037 2002-08-22 2003-08-01 Procede de raccordement metallurgique d'un tube a un element Ceased WO2004019377A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003257100A AU2003257100A1 (en) 2002-08-22 2003-08-01 Method for metallurgically joining a tube to a member

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/226,179 US6847001B2 (en) 2002-08-22 2002-08-22 Method for metallurgically joining a tube to a member
US10/226,179 2002-08-22
US10/454,299 2003-06-04
US10/454,299 US6998560B2 (en) 2002-08-22 2003-06-04 Method for metallurgically joining a tube to a member

Publications (2)

Publication Number Publication Date
WO2004019377A2 true WO2004019377A2 (fr) 2004-03-04
WO2004019377A3 WO2004019377A3 (fr) 2004-06-03

Family

ID=31949783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/024037 Ceased WO2004019377A2 (fr) 2002-08-22 2003-08-01 Procede de raccordement metallurgique d'un tube a un element

Country Status (2)

Country Link
AU (1) AU2003257100A1 (fr)
WO (1) WO2004019377A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006014663A1 (fr) * 2004-07-23 2006-02-09 Delphi Technologies, Inc. Procédé de soudure de résistance
US7253372B2 (en) 2004-07-07 2007-08-07 Delphi Technologies, Inc. Method for welding heat exchanger tube to tubesheet
US7423232B2 (en) 2003-05-06 2008-09-09 Delphi Technologies, Inc. Method for resistance welding/brazing a tube to a member
US7476824B2 (en) 2004-07-07 2009-01-13 Delphi Technologies, Inc. Welding apparatus for resistance welding heat exchanger tube to tubesheet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4769624A (en) * 1986-10-30 1988-09-06 General Motors Corporation Permanent magnet assembly
US5786548A (en) * 1996-08-15 1998-07-28 Hughes Electronics Corporation Hermetic package for an electrical device
US20020008387A1 (en) * 2000-01-14 2002-01-24 Vasudeva Kailash C. Exhaust system flanges
US6847001B2 (en) * 2002-08-22 2005-01-25 Delphi Technologies, Inc. Method for metallurgically joining a tube to a member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7423232B2 (en) 2003-05-06 2008-09-09 Delphi Technologies, Inc. Method for resistance welding/brazing a tube to a member
US7253372B2 (en) 2004-07-07 2007-08-07 Delphi Technologies, Inc. Method for welding heat exchanger tube to tubesheet
US7476824B2 (en) 2004-07-07 2009-01-13 Delphi Technologies, Inc. Welding apparatus for resistance welding heat exchanger tube to tubesheet
WO2006014663A1 (fr) * 2004-07-23 2006-02-09 Delphi Technologies, Inc. Procédé de soudure de résistance

Also Published As

Publication number Publication date
WO2004019377A3 (fr) 2004-06-03
AU2003257100A8 (en) 2004-03-11
AU2003257100A1 (en) 2004-03-11

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