• ICALEO 2012 Paper #1407 (Position Welding of 960 MPa Ultra-High-Strength Steel)

    Position Welding of 960 MPa Ultra-High-Strength Steel
    Authors:
    Jukka Siltanen, Rautaruukki Oyj; Hämeenlinna Finland
    Sakari Tihinen, Ruukki Metals Oy; Raahe Finland
    Presented at ICALEO 2012

    High-strength and ultra high-strength steels are used more and more frequently in the engineering industry. The welding of high-strength steels requires lower heat input welding processes to achieve matching joints. Laser and laser-GMA hybrid welding processes are used for the welding of these kinds of steels. The Finnish steel maker Rautaruukki makes high and ultra-high strength steels under the trademark Optim. In earlier studies, the welding position for these steels has been a flat position ...

    $28.00

  • ICALEO 2012 Paper #1501 (Narrow Gap Laser Welding of Thick Section Stainless Steel)

    Narrow Gap Laser Welding of Thick Section Stainless Steel
    Authors:
    Ahmed S. Elmesalamy, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The Manchester Univ.; Manchester Great Britain
    Lin Li, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The Manchester Univ.; Manchester Great Britain
    John A. Francis, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The Manchester Univ.; Manchester Great Britain
    Presented at ICALEO 2012

    Laser welding of thick cross section stainless steel normally requires high power lasers. Typical weld penetration depth is 1-2 mm/...

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  • ICALEO 2012 Paper #1502 (Laser-Arc Hybrid Welding of Thick-Section Mild Steel Plates: Microstructure and Performances of the Beads)

    Laser-Arc Hybrid Welding of Thick-Section Mild Steel Plates: Microstructure and Performances of the Beads
    Authors:
    Geng Li, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan Peoples Republic of China
    Ming Gao, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan Peoples Republic of China
    Chen Zhang, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan Peoples Republic of China
    Xiaoyan Zeng, Wuhan National Laboratory for Optoelectronics, Huazhong Univ. of Science and Technology; Wuhan Peoples Republic of China
    Presented at ICALEO 2012
    ...

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  • ICALEO 2012 Paper #1503 (Laser-GMA Hybrid Welding of Direct Quenched Steel in Lap Joint Configuration - A Preliminary Study)

    Laser-GMA Hybrid Welding of Direct Quenched Steel in Lap Joint Configuration - A Preliminary Study
    Authors:
    Miikka Karhu, VTT Technical Research Centre of Finland; Lappeenranta Finland
    Veli Kujanpaa, VTT Technical Research Centre of Finland; Lappeenranta Finland
    Kalervo Leino, VTT Technical Research Centre of Finland; -
    Jukka Siltanen, Rautaruukki Oyj, Corporate Functions; HaMeenlinna Finland
    Presented at ICALEO 2012

    Welding experiments using laser-GMA hybrid welding of lap joint between 6.5 mm thick direct quenched Ramor 500 grade protection steel and 2 mm thick Optim 500 ML construction steel plates was carried out. The filler materials used were Union...

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  • ICALEO 2012 Paper #1505 (Laser GMA Hybrid Welding for Thick Wall Applications of Pipeline Steel with the Grade X70)

    Laser GMA Hybrid Welding for Thick Wall Applications of Pipeline Steel with the Grade X70
    Authors:
    Oliver Seffer, Laser Zentrum Hannover e.V.; Hannover Germany
    Jasmin Lindner, Laser Zentrum Hannover e.V.; -
    André Springer, Laser Zentrum Hannover e.V.; Hannover Germany
    Stefan Kaierle, Laser Zentrum Hannover e.V.; Hannover Germany
    Volker Wesling, Laser Zentrum Hannover e.V.; Hannover Germany
    Heinz Haferkamp, Laser Zentrum Hannover e.V.; Hannover Germany
    Presented at ICALEO 2012

    For the joining of heavy plates hybrid processes have been established. The presented approach of one side welding of thick metal sheets combines a laser ...

    $28.00

  • ICALEO 2012 Paper #1601 (Challenges in the Design of Portable Laser Repair Systems)

    Challenges in the Design of Portable Laser Repair Systems
    Authors:
    Andrew Nissly, Applied Research Laboratory, The Penn State Univ.; State College PA USA
    Stephen W. Brown, Not a presenter - ARL, Penn State Univ.; -
    Edward Reutzel, Applied Research Laboratory, The Penn State Univ.; State College PA USA
    Todd Palmer, Applied Research Laboratory, The Penn State Univ.; State College PA
    Presented at ICALEO 2012

    Laser processing is well suited to implementation in high volume applications where a dedicated processing sell is used. The characteristics of laser processing (ease of automation, low heat input, fiber optic delivery) make it an attractive tool for...

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  • ICALEO 2012 Paper #1602 (Adaptive Shape Control of Laser Metal Deposition by Adjusting Weld Pool Size)

    Adaptive Shape Control of Laser Metal Deposition by Adjusting Weld Pool Size
    Authors:
    Masanori Miyagi, Hitachi Research Laboratory; Hitachi-shi Ibaraki-ken Japan
    Takeshi Tsukamoto, Hitachi Research Laboratory; Hitachi-Shi, Ibaraki-Ken Japan
    Hirotsugu Kawanaka, Hitachi Research Laboratory; Hitachi-Shi, Ibaraki-Ken Japan
    Presented at ICALEO 2012

    LMD (Laser Metal Deposition) has been developed for repair of damaged components and for the direct forming of three dimensional structures. From the aspect of productivity, improvement of shape accuracy of the deposit is required to reduce machining process after LMD. Objective of this work is to control build-up shape by adjust...

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  • ICALEO 2012 Paper #1603 (A Novel Method of Pulsed Laser-Cladding for Effective Control of Melting of WC Particulates in Nicr-WC Composite Coatings)

    A Novel Method of Pulsed Laser-Cladding for Effective Control of Melting of WC Particulates in Nicr-WC Composite Coatings
    Authors:
    Manish Tak, International Advanced Research Centre for Power Metallurgy and New Materials (ARCI); Hyderabad India
    S. M. Shariff, International Advanced Research Centre for Power Metallurgy and New Materials (ARCI); Hyderabad India
    Vikram Sake, International Advanced Research Centre for Power Metallurgy and New Materials (ARCI); Hyderabad India
    G. Padmanabham, International Advanced Research Centre for Power Metallurgy and New Materials (ARCI); Hyderabad India
    Presented at ICALEO 2012

    In cermet coatings such as WC reinforced Ni-...

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  • ICALEO 2012 Paper #1701 (Effect of Gas Shielding and Heat Input on Autogenous Welding of Duplex Stainless Steel)

    Effect of Gas Shielding and Heat Input on Autogenous Welding of Duplex Stainless Steel
    Authors:
    Antti Salminen, Laboratory of Laser Materials Processing, Lappeenranta Univ. of Technology, Machine Technology Centre Turku Ltd; Lappeenranta Finland
    Elin Westin, Böhler Schweisstechnik Austria GmbH; Kapfenberg Austria
    Esa Lappalainen, Laboratory of Laser Materials Processing, Lappeenranta Univ. of Technology; Lappeenranta Finland
    Anna Unt, Laboratory of Laser Materials Processing, Lappeenranta Univ. of Technology; Lappeenranta Finland
    Presented at ICALEO 2012

    Laser welding is often used for welding of stainless steel. Typically the welding is performed as auto...

    $28.00

  • ICALEO 2012 Paper #1702 (High-Quality Laser Welding of Copper Using Appropriate Power Modulation - Invited Presentation - 40 Minutes)

    High-Quality Laser Welding of Copper Using Appropriate Power Modulation - Invited Presentation - 40 Minutes
    Authors:
    Andreas Heider, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Rudolf Weber, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Thomas Graf, Institut fuer Strahlwerkzeuge (IFSW); Stuttgart Germany
    Presented at ICALEO 2012

    Due to its very good electric and thermal conductivity, copper is an important material with a wide range of applications, which require an efficient and reliable welding process, preferably with laser beams. The same material properties make laser welding of copper a challenging task. To achieve welds with penetration dep...

    $28.00

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