AU2014368721A1 - A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method - Google Patents
A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method Download PDFInfo
- Publication number
- AU2014368721A1 AU2014368721A1 AU2014368721A AU2014368721A AU2014368721A1 AU 2014368721 A1 AU2014368721 A1 AU 2014368721A1 AU 2014368721 A AU2014368721 A AU 2014368721A AU 2014368721 A AU2014368721 A AU 2014368721A AU 2014368721 A1 AU2014368721 A1 AU 2014368721A1
- Authority
- AU
- Australia
- Prior art keywords
- metal
- rudder
- transition plate
- welding
- thermal expansion
- 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.)
- Granted
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Plasma & Fusion (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 11 made from a first metal and a rudder blade 12 made from a second metal. Both the rudder stock 11 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 (11)
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.
11 .A rudder substantially as hereinbefore described.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2019101079A AU2019101079A4 (en) | 2013-12-17 | 2019-09-19 | A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1322251.8 | 2013-12-17 | ||
GBGB1322251.8A GB201322251D0 (en) | 2013-12-17 | 2013-12-17 | Rudder tabs |
EP13275320.3A EP2886236A1 (en) | 2013-12-17 | 2013-12-17 | Rudder tabs |
EP13275320.3 | 2013-12-17 | ||
PCT/EP2014/078282 WO2015091681A1 (en) | 2013-12-17 | 2014-12-17 | Rudder tabs |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2019101079A Division AU2019101079A4 (en) | 2013-12-17 | 2019-09-19 | A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method |
Publications (3)
Publication Number | Publication Date |
---|---|
AU2014368721A1 true AU2014368721A1 (en) | 2016-07-07 |
AU2014368721B2 AU2014368721B2 (en) | 2019-10-24 |
AU2014368721B8 AU2014368721B8 (en) | 2019-11-07 |
Family
ID=52278614
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2014368721A Active AU2014368721B8 (en) | 2013-12-17 | 2014-12-17 | A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method |
AU2019101079A Expired AU2019101079A4 (en) | 2013-12-17 | 2019-09-19 | A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2019101079A Expired AU2019101079A4 (en) | 2013-12-17 | 2019-09-19 | A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method |
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)
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)
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 |
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 |
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 |
-
2014
- 2014-12-17 CA CA2934139A patent/CA2934139C/en active Active
- 2014-12-17 WO PCT/EP2014/078282 patent/WO2015091681A1/en active Application Filing
- 2014-12-17 AU AU2014368721A patent/AU2014368721B8/en active Active
- 2014-12-17 EP EP14821596.5A patent/EP3083122A1/en not_active Withdrawn
-
2019
- 2019-09-19 AU AU2019101079A patent/AU2019101079A4/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CA2934139A1 (en) | 2015-06-25 |
EP3083122A1 (en) | 2016-10-26 |
AU2014368721B2 (en) | 2019-10-24 |
WO2015091681A1 (en) | 2015-06-25 |
CA2934139C (en) | 2022-08-16 |
AU2019101079A4 (en) | 2019-10-31 |
AU2014368721B8 (en) | 2019-11-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1802417B1 (en) | Methods for extending the life of alloy steel welded joints by elimination and reduction of the haz | |
KR20170038931A (en) | Laser welded joint and laser welding method | |
CN107405723A (en) | The friction-stir engagement device of structural steel | |
CN105817846A (en) | Titanium cylinder machining process | |
JPH06114564A (en) | Method of joining high manganese cast steel switching member or manganese steel rail with carbon steel rail | |
CN102091884A (en) | Flux-cored wire capable of generating compressive stress at weld toe of stainless steel weld joint | |
CN105108273A (en) | Welding process for high-strength type steel plate | |
AU2019101079A4 (en) | A method of connecting metals having dissimilar thermal expansion rates to one another and a rudder manufactured by that method | |
EP3727716B1 (en) | Method of manufacturing a welded steel part to be used as motor vehicle part | |
EP2886236A1 (en) | Rudder tabs | |
GB2521537A (en) | Rudder tabs | |
KR20190064815A (en) | Method for manufacturing the pipe fitting having excellent low-temperature toughness in heat affected zone | |
Dametew | Experimental investigation on weld ability of cast iron | |
RU2510627C1 (en) | Method of laser butt welding of plates from steel with boron content of 1.3-3.6% | |
JP2022502256A (en) | Flash welding member and flash welding method with excellent formability of wheel rim weld | |
WO2018070316A1 (en) | Friction stir welding method and device | |
Butt et al. | Characterization of Two Hybrid Welding Techniques on SA 516 Grade 70 Weldments | |
CN115625446A (en) | Welding method of chromium molybdenum steel and martensite heat-resistant steel | |
JP3740031B2 (en) | Liquid phase diffusion bonding method using groove filler and its joint | |
WO2016056654A1 (en) | Method for manufacturing shaft body | |
Trukhanov et al. | Influence of Preheating and Postweld Heat Treatment on the Structure and Strength of the Wire Frame Welded Joint Made of Spring Steel C62D | |
Shanmugarajan et al. | Power Beam Processing of Stainless Steels | |
Abd Majid et al. | Effect of Post Weld Heat Treatment on Weld Hardness Quality of P91 Welded Pipes | |
KR20180073346A (en) | Method for manufacturing dissimilar metals | |
CN104668717A (en) | Novel steel rail welding method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TH | Corrigenda |
Free format text: IN VOL 33 , NO 41 , PAGE(S) 5823 UNDER THE HEADING APPLICATIONS ACCEPTED - NAME INDEX UNDER THE NAME BAE SYSTEMS PLC, APPLICATION NO.2014368721, UNDER INID (54) CORRECT THE TITLE TO READ A METHOD OF CONNECTING METALS HAVING DISSIMILAR THERMAL EXPANSION RATES TO ONE ANOTHER AND A RUDDER MANUFACTURED BY THAT METHOD |
|
FGA | Letters patent sealed or granted (standard patent) |