Multipass welding buildup plan
A layer buildup plan defines the number, position, and sequence of weld layers in a deep joint. It ensures a controlled microstructure and improved mechanical properties.
Physicochemical Mechanism of Action
A layer build-up plan specifies how the individual weld layers are arranged in a deep groove. This influences the microstructure and mechanical properties of the weld.
Metallurgical Relevance & Risks in Welding
An incorrectly set up layer build-up plan can lead to defective microstructures, such as too much glass-hard martensite, which increases hardness but reduces toughness and dimensional stability. This can lead to cracks and damage in the component.
Workshop Practice & Instructions
When executing a layer build-up plan, the weld layers must be applied exactly according to the specified number, position, and sequence. This requires precise control of welding parameters such as temperature and time. If necessary, additional tests should be performed to ensure that the microstructure meets the specific requirements.