SIMULATION OF REPAIR WELDING ON PEARLITIC RAILWAY STEEL USING ADDITIVE MANUFACTURING EQUIPMENT
Paper i proceeding, 2022

Large variations in heat input and cooling rates can occur during repair welding, which can affect the material properties of railway steel. Grinding can also expose the material to short-term, high-power heating. This study investigates the material properties and residual stress state after heating by laser scanning using both Additive Manufacturing equipment and Laser Welding equipment. The results show that these methods are comparable and could possibly be used to simulate repair welding. Improved welding simulations can expand the possibilities for repair welding and increase the reliability of welding procedures in railway maintenance.

white etching layer

pearlitic steel

rail head maintenance

repair welding

residual stress

laser heating

LB-PBF

Författare

Erika Steyn

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Johan Ahlström

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

CM 2022 - 12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, Conference Proceedings

639-645
9780646865881 (ISBN)

12th International Conference on Contact Mechanics and Wear of Rail/Wheel Systems, CM 2022
Melbourne, Australia,

Ämneskategorier

Energiteknik

Bearbetnings-, yt- och fogningsteknik

Metallurgi och metalliska material

Mer information

Senast uppdaterat

2023-03-13