Weld Reinforcement
Weld reinforcement occurs when excess weld metal is deposited. This leads to uneven stresses and can cause porosity, embrittlement, and reduced mechanical properties.
Physical-Chemical Mechanism of Action
Weld reinforcement occurs when the weld metal is applied beyond the required groove height on the weld surface. This leads to uneven stresses and can cause porosity, embrittlement, and reduced mechanical properties.
Metallurgical Relevance & Welding Risks
Weld reinforcement causes uneven stresses in the structure, which can lead to porosity and embrittlement. This reduces the mechanical properties such as strength and toughness of the weld. Additionally, it can cause cracks and hot cracks.
Workshop Practice & Instructions
To avoid weld reinforcement, the weld metal must be precisely matched to the groove height. This requires careful control of the build-up height and the welding process. Without proper control, uneven stresses can occur, posing risks to the mechanical properties and service life of the weld.