EP3083122A1 - Rudder tabs - Google Patents

Rudder tabs

Info

Publication number
EP3083122A1
EP3083122A1 EP14821596.5A EP14821596A EP3083122A1 EP 3083122 A1 EP3083122 A1 EP 3083122A1 EP 14821596 A EP14821596 A EP 14821596A EP 3083122 A1 EP3083122 A1 EP 3083122A1
Authority
EP
European Patent Office
Prior art keywords
metal
rudder
transition plate
welding
stock
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.)
Withdrawn
Application number
EP14821596.5A
Other languages
German (de)
French (fr)
Inventor
Malcolm SEWARD
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.)
BAE Systems PLC
Original Assignee
BAE Systems PLC
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 GBGB1322251.8A external-priority patent/GB201322251D0/en
Priority claimed from EP13275320.3A external-priority patent/EP2886236A1/en
Application filed by BAE Systems PLC filed Critical BAE Systems PLC
Priority to EP14821596.5A priority Critical patent/EP3083122A1/en
Publication of EP3083122A1 publication Critical patent/EP3083122A1/en
Withdrawn legal-status Critical Current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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
    • B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/3066—Fe as the principal constituent with Ni as next major constituent
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/308—Fe as the principal constituent with Cr as next major constituent
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/308—Fe as the principal constituent with Cr as next major constituent
    • B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
    • 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
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working 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
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel
    • 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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2251/00—Treating composite or clad material

Definitions

  • This invention relates to a method of connecting metals together and articles produced thereof and more specifically to connecting them to construct a ship's rudder.
  • Pre-heating involves heating the metals to be welded to a predetermined, minimum temperature. This is done to remove any moisture and/or hydrogen from the weld area to prevent delayed hydrogen cracking and to lower the thermal gradient to reduce distortion and residual stress. Stress relieving after welding is another heat treatment which removes internal or residual stresses that may be present from the welding operation. Stress relief after welding reduces the risk of brittle fracture.
  • rudders are fabricated by balance welding rudder blades to a rudder stock and then stress relieving once fabrication has been completed.
  • a rudder stock made of a Forging having a higher carbon equivalent to that used for the rudder blades.
  • a preferred Forging rudder stock has a high carbon content which means that it requires pre-heat treatment and, after welding, for stress relieving.
  • rudder blades are manufactured from a metal which is different to that used to make the rudder stock. As the metals are different, the thermal expansion rates will be different which means that it is not possible to apply stress relief to the metals whilst maintaining the resulting rudder within the required tolerance range of 6mm (+- 3mm). It can be very expensive to make a rudder from rudder stock and blades of the same material as a superior quality is needed for the blades compared to the stock.
  • a method of connecting metals having dissimilar thermal expansion rates to one another including the steps of: pre-heat treating a transition plate along with a first metal; welding the transition plate to the first metal; stress relieving the resulting weld; and welding a second metal to the transition plate.
  • the transition plate may be welded to the first metal by MIG or MAG welding.
  • the second metal may be welded to the transition plate by MIG or MAG welding.
  • transition plates means that similar or dissimilar metals can be connected to each other, with the weld undergoing pre-heat treatment and stress relief, without causing stress to the welds by different rates of thermal expansion. This maintains the resulting product within the desired tolerances as no welding needs to be carried out directly on the now stress relieved rudder stock.
  • the transition plates are made of DH36 steel.
  • the first metal is a forged-steel measuring 100 mm thick and which has high carbon content.
  • the second metal may be DH36 steel or Super austenitic Avesta Sheffield 254SMO® which is a stainless steel containing 18% nickel, 20% chromium, 6.1 % molybdenum, 0.2% nitrogen and 0.01 % carbon.
  • the first metal is used to make a rudder stock and the second metal is used to make a rudder blade insert.
  • 254SMO® may be used as it has improved wear and corrosion resistance properties.
  • the different grades of steel of the first metal and second metal expand and contract at different rates to one another.
  • the expansion rate of Avesta Sheffield 254SMO® is double that of the high-carbon forged steel which can be used for the rudder stock. It is evident that stress relief of the conventional weld joining the blade and the stock will cause the steel components to expand at different rates.
  • the present invention overcomes this problem and results in a rudder which is either not distorted or distorted within an acceptable tolerance range.
  • the transition plate and the second metal have comparable expansion rates.
  • a rudder comprising a first metal welded to a transition plate, the transition plate being further welded to a second metal wherein the first metal has a higher carbon content than the second metal.
  • Figure 1 shows a view of a ship's rudder and transition plate according to the present invention.
  • a ship's rudder 10 comprising a rudder stock 1 1 made from a first metal and a rudder blade 12 made from a second metal. Both the rudder stock 1 1 and rudder blade 12 are abutted against a transition plate 13 and welded along the length of joints 14 and 15, in accordance with the methods of the invention.
  • Figure 1 shows the welds at joints 14 and 15 as butt joints, however, these could be other types of joint, for example, lap joints, modified butt joints, modified lap joints or a combination of butt and lap joints.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

The invention relates to a method of connecting metals together and articles produced thereof and more specifically to connecting metals together to construct the ships rudder wherein the metals have dissimilar thermal expansion rates to one another including the steps of: pre-heat treating a transition plate along with a first metal; welding the transition plate to the first metal; stress relieving the resulting weld; and welding a second metal to the at least one transition plate.

Description

RUDDER TABS
This invention relates to a method of connecting metals together and articles produced thereof and more specifically to connecting them to construct a ship's rudder.
Before two metals of specific grades are welded to one another, a preheating step is used. Pre-heating involves heating the metals to be welded to a predetermined, minimum temperature. This is done to remove any moisture and/or hydrogen from the weld area to prevent delayed hydrogen cracking and to lower the thermal gradient to reduce distortion and residual stress. Stress relieving after welding is another heat treatment which removes internal or residual stresses that may be present from the welding operation. Stress relief after welding reduces the risk of brittle fracture.
Currently, ships' rudders are fabricated by balance welding rudder blades to a rudder stock and then stress relieving once fabrication has been completed. A rudder stock made of a Forging having a higher carbon equivalent to that used for the rudder blades. A preferred Forging rudder stock has a high carbon content which means that it requires pre-heat treatment and, after welding, for stress relieving. Sometimes, rudder blades are manufactured from a metal which is different to that used to make the rudder stock. As the metals are different, the thermal expansion rates will be different which means that it is not possible to apply stress relief to the metals whilst maintaining the resulting rudder within the required tolerance range of 6mm (+- 3mm). It can be very expensive to make a rudder from rudder stock and blades of the same material as a superior quality is needed for the blades compared to the stock.
According to a first aspect of the invention there is provided a method of connecting metals having dissimilar thermal expansion rates to one another including the steps of: pre-heat treating a transition plate along with a first metal; welding the transition plate to the first metal; stress relieving the resulting weld; and welding a second metal to the transition plate. The transition plate may be welded to the first metal by MIG or MAG welding. The second metal may be welded to the transition plate by MIG or MAG welding.
The use of transition plates means that similar or dissimilar metals can be connected to each other, with the weld undergoing pre-heat treatment and stress relief, without causing stress to the welds by different rates of thermal expansion. This maintains the resulting product within the desired tolerances as no welding needs to be carried out directly on the now stress relieved rudder stock. In a preferred embodiment the transition plates are made of DH36 steel.
Preferably, the first metal is a forged-steel measuring 100 mm thick and which has high carbon content. The second metal may be DH36 steel or Super austenitic Avesta Sheffield 254SMO® which is a stainless steel containing 18% nickel, 20% chromium, 6.1 % molybdenum, 0.2% nitrogen and 0.01 % carbon. The first metal is used to make a rudder stock and the second metal is used to make a rudder blade insert. 254SMO® may be used as it has improved wear and corrosion resistance properties.
The different grades of steel of the first metal and second metal expand and contract at different rates to one another. For example, the expansion rate of Avesta Sheffield 254SMO® is double that of the high-carbon forged steel which can be used for the rudder stock. It is evident that stress relief of the conventional weld joining the blade and the stock will cause the steel components to expand at different rates. However, the present invention overcomes this problem and results in a rudder which is either not distorted or distorted within an acceptable tolerance range.
Preferably the transition plate and the second metal have comparable expansion rates.
There is no need to preheat the transition plates and rudder blades. Also, there is no need to stress relieve the weld joining the blade to the transition plate. The method can be applied to rudder stabilisers or steel fabrication that requires tight tolerances and metals that require stress relieving.
In a further aspect of the invention there is provided a rudder comprising a first metal welded to a transition plate, the transition plate being further welded to a second metal wherein the first metal has a higher carbon content than the second metal.
An embodiment of the invention will now be described by way of example only and with reference to the accompanying drawing of which:-
Figure 1 shows a view of a ship's rudder and transition plate according to the present invention.
Turning to Figure 1 there is provided a ship's rudder 10 comprising a rudder stock 1 1 made from a first metal and a rudder blade 12 made from a second metal. Both the rudder stock 1 1 and rudder blade 12 are abutted against a transition plate 13 and welded along the length of joints 14 and 15, in accordance with the methods of the invention. For simplicity Figure 1 shows the welds at joints 14 and 15 as butt joints, however, these could be other types of joint, for example, lap joints, modified butt joints, modified lap joints or a combination of butt and lap joints.
Variants, modifications, additions and omissions relating to the description above are possible within the ambit of the invention and will be readily apparent to the skilled addressee.

Claims

1 . A method of connecting metals having dissimilar thermal expansion rates to one another including the steps of: pre-heat treating a transition plate along with a first metal; welding the transition plate to the first metal; stress relieving the resulting weld; and welding a second metal to the at least one transition plate.
2. A method according to claim 1 wherein the first metal is a high- carbon, forged steel.
3. A method according to claim 1 or claim 2 wherein the second metal is DH36 steel or a stainless steel containing 18% nickel, 20% chromium, 6.1 % molybdenum, 0.2% nitrogen and 0.01 % carbon.
4. A method according to any preceding claim wherein the first metal is used to make a rudder stock.
5. A method according to claim 3 or claim 4 wherein the second metal is used to manufacture a rudder blade.
6. A rudder manufactured by the method of any preceding claim.
7. A rudder comprising a first metal welded to a transition plate, the transition plate being further welded to a second metal wherein the first metal has a higher carbon content than the second metal.
8. A rudder according to claim 7 wherein the first metal is a rudder stock.
9. A rudder according to claim 7 or claim 8 wherein the second metal is a rudder blade.
10. A method substantially as hereinbefore described.
1 1 .A rudder substantially as hereinbefore described.
EP14821596.5A 2013-12-17 2014-12-17 Rudder tabs Withdrawn EP3083122A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14821596.5A EP3083122A1 (en) 2013-12-17 2014-12-17 Rudder tabs

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB1322251.8A GB201322251D0 (en) 2013-12-17 2013-12-17 Rudder tabs
EP13275320.3A EP2886236A1 (en) 2013-12-17 2013-12-17 Rudder tabs
EP14821596.5A EP3083122A1 (en) 2013-12-17 2014-12-17 Rudder tabs
PCT/EP2014/078282 WO2015091681A1 (en) 2013-12-17 2014-12-17 Rudder tabs

Publications (1)

Publication Number Publication Date
EP3083122A1 true EP3083122A1 (en) 2016-10-26

Family

ID=52278614

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14821596.5A Withdrawn EP3083122A1 (en) 2013-12-17 2014-12-17 Rudder tabs

Country Status (4)

Country Link
EP (1) EP3083122A1 (en)
AU (2) AU2014368721B8 (en)
CA (1) CA2934139C (en)
WO (1) WO2015091681A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106514096B (en) * 2016-12-09 2018-08-28 南京中船绿洲机器有限公司 A kind of auxiliary mould and method of manufacture rudder for ship

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2229405A (en) * 1939-09-14 1941-01-21 Ross Heater & Mfg Company Inc Welding method
GB706015A (en) * 1950-06-29 1954-03-24 Babcock & Wilcox Ltd Improvements in or relating to joints between austenitic steel tubes or pipes and ferritic steel tubes or other elements
US3052016A (en) * 1958-03-19 1962-09-04 Ind Fernand Courtoy Bureau Et Structure for joining by fusion-welding of ferritic steel with austenitic steel
JPS55100892A (en) * 1979-01-24 1980-08-01 Mitsubishi Heavy Ind Ltd Welding method for joint of dissimilar material
US4333670A (en) * 1980-05-05 1982-06-08 General Atomic Company Stepped transition joint
JPS58148080A (en) * 1982-03-01 1983-09-03 Mitsubishi Heavy Ind Ltd Joint of different materials
JP2791606B2 (en) * 1990-10-24 1998-08-27 アイシン高丘株式会社 Joining method between spheroidal graphite cast iron and stainless steel
JP2791607B2 (en) * 1990-10-24 1998-08-27 アイシン高丘株式会社 Joining method between spheroidal graphite cast iron and stainless steel

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2015091681A1 *

Also Published As

Publication number Publication date
AU2014368721A1 (en) 2016-07-07
CA2934139C (en) 2022-08-16
WO2015091681A1 (en) 2015-06-25
AU2019101079A4 (en) 2019-10-31
AU2014368721B8 (en) 2019-11-07
CA2934139A1 (en) 2015-06-25
AU2014368721B2 (en) 2019-10-24

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