Weld Bead Sequence Plan
A weld bead sequence plan defines the order and positions in which weld beads are placed on a component. This minimizes distortion and optimizes the weld metal microstructure.
Physical-Chemical Mechanism of Action
The weld bead sequence plan determines the order and placement of weld beads to minimize distortion and optimize the microstructure. The correct sequence ensures each pass works in the ideal temperature range, leading to better toughness and hardness of the weld metal.
Metallurgical Relevance & Welding Risks
Incorrect sequencing or placement of weld beads can cause distortion, coarsening the microstructure and reducing weld toughness. This increases susceptibility to cracks and hot cracks. Additionally, uneven cooling can lead to localized stress zones, which also promotes cracking.
Workshop Practice & Instructions
To ensure an optimal weld, follow the specified weld bead sequence plan. Place the beads in the given order and positions. Ensure even cooling of the weld. If you have questions about correct application, contact the material manufacturer or the metallurgist.