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Welding and Related Technologies Research Group

Research keywords: · welding · hydrogen · corrosion · failure analysis

Dr. Balázs Varbai

Assistant Professor

Dr. Kornél Májlinger

Associate Professor

Introduction of the Research Group

In the research group, we carry out mainly industrial-driven R&D work, reflecting on various problems that have arisen. In addition to manual process variants, welding carts and welding robots are available at the research site (eg: TIG, MIG, manual arc welding, flame welding, resistance point and projection welding, manual laser welding, etc.). In our material testing laboratories, all standard mechanical and metallographic examinations of the formed joints can be performed, and electron microscopic and electrochemical corrosion examinations can be performed if necessary. In basic research, the group is active in the field of austenitic and duplex corrosion-resistant welding, as well as in the field of welding ultra-high-strength steels.

Achievements

The most important results of the research group:
-publications in several D1 and Q1 journals
-representation in international organizations (eg International Institute of Welding) and presidency (eg Hungarian Welding Association)
- participation in European projects (eg 2021-1-RO01-KA220-HED-000032181, DIGITAL TRAINING TOOLS IN STEEL STRUCTURE INTEGRITY)
- joint research projects and publications with domestic and foreign universities (University of Miskolc, University West, Gdansk University of Technology, LeTourneau University, etc.)
- Extensive expertise in welding and corrosion damage

Publications

Weldability of Duplex Stainless Steels - Thermal Cycle and Nitrogen Effects.
Varbai, Balázs ; Adonyi, Yoni ; Baumer, Richard; Pickle, Timothy; Dobránszky, János; Májlinger, Kornél.
WELDING JOURNAL 98 : 3 pp. 78-87. , 10 p. (2019)
https://s3.amazonaws.com/WJ-www.aws.org/supplement/2019.98.006.pdf

Effect of heat input and role of nitrogen on the phase evolution of 2205 duplex stainless steel weldment.
Varbai, Balázs ; Pickle, Timothy ; Májlinger, Kornél
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING 176 Paper: 103952 , 7 p. (2019)
https://www.sciencedirect.com/science/article/abs/pii/S0308016119300080?via%3Dihub

Shear tension strength of resistant spot welded ultra high strength steels.
Varbai, Balázs ; Sommer, Christina ; Szabó, Mihály ; Tóth, Tamás ; Májlinger, Kornél
THIN-WALLED STRUCTURES 142 pp. 64-73. , 10 p. (2019)
https://www.sciencedirect.com/science/article/abs/pii/S0263823118314721?via%3Dihub

Physical and theoretical modeling of the nitrogen content of duplex stainless steel weld metal: Shielding gas composition and heat input effects.
Varbai, Balazs ; Majlinger, Kornel
METALS 9 : 7 Paper: 762 , 16 p. (2019)
https://www.mdpi.com/2075-4701/9/7/762

Gas metal arc welding of dissimilar AHSS sheets.
Májlinger, Kornél ; Kalácska, Eszter ; Pasquale, Russo Spena
MATERIALS AND DESIGN 109 pp. 615-621. , 7 p. (2016)
https://www.sciencedirect.com/science/article/abs/pii/S0264127516309820?via%3Dihub

Journals

Domestic welding conference
Hungarian Welding technology journal
International WOS refereed journals (eg Welding Journal, Welding in the World)
International Conference Presentations: Duplex World Seminar & Summit, Fabtech, IIW Conference, Stainless Steel World Conference & Expo

Infrastructure

20 types of manual arc welding equipment from different manufacturers - enables unique "benchmarking" and technology stability testing Industrial MIG / MAG welding robot Manual laser welder with moving robot arm Wire electrode additive production option with robotic welding Investigation of welding heat processes Corrosion tests, surface treatment methods (eg electrochemical pickling, coating)

Projects

eu-WELD, Erasmus +, 2016-1-RO01-KA202-024508, 2016-2018, European Union
ALLIES, Erasmus +, 2021-1-RO01-KA220-HED-000032181, 2022-2025, European Union
Aquamarine project, Materials technology research i hydrogen embrittlement, 2021-2022, ITM, MFGT Zrt.

Industry relations

Development of welding technology for TIGÁZ pressurized natural gas pipeline
Ford - Addition of a physical model of a thermal process for finite element simulation
Dreher Sörgyárak Zrt. - Development of the welding of HARDOX 450
Simulation of GOLDHOFER chassis welding of Pylon-94 Kft.
Dunakeszi Járműjavító Kft. - Brazing of austenitic steels, welding of thin duplex steels
Indupro Ltd. - Resistance spot welding of galvanized sheets
K&H Bank - Evaluation of stress corrosion failure of welded joints
Linde Répcelak - Stress corrosion evaluation of welded joints in austenitic steel heat exchangers
BPL Media Group Bt. - Corrosion damage of austenitic stainless steel columns
MCS Vágóhíd Zrt. - Corrosion damage of austenitic pipelines
Magyar Földgáztároló Zrt. - Aquamarine project, Materials technology research, hydrogen damage to welded joints
MOL Zrt. - Preventive maintenance systems in the prediction of corrosion damage

Our other industrial partners: Linde Gáz Magyarország Zrt., Messer Hungarogáz Kft., Flexman Robotics Kft., ESAB Kft., Crown International Kft., Rehm Kft.

Conferences

XXXI. INTERNATIONAL ONLINE WELDING CONFERENCE
Kecsckemét, 2022 Kornél Májlinger, member of the program committee, chair

XXX. JUBILEE INTERNATIONAL WELDING CONFERENCE
online, 2021 Kornél Májlinger, member of the program committee, chair

FABTECH USA, 2017, 2018, 2020 and 2021, conference participation, Balázs Varbai

Duplex World Seminar & Summit, 2018, invited lecture, Balázs Varbai

72nd IIW Annual Assembly and International Conference (IIW), conference presentation, chair, Balázs Varbai, Kornél Májlinger