Defect Rectification
Rectification involves specific repair measures to remove unacceptable weld imperfections while adhering to qualified work instructions.
Physicochemical Mechanism of Action
Rectification in welding refers to the identification and repair of unacceptable imperfections, such as porosity, cracks, or irregularities. This can be achieved by removing the defective material and re-welding the affected areas.
Metallurgical Relevance & Risks in Welding
Unacceptable weld imperfections can lead to a reduction in mechanical properties, such as toughness and strength. This can lead to cracking or failure under load. Therefore, careful rectification is essential to ensure the weld has the necessary mechanical properties.
Workshop Practice & Instructions
To perform rectification in welding, the following steps should be taken:
1. Identify the imperfection and determine the cause.
2. Carefully remove the defective material without damaging the microstructure.
3. Prepare the area for rewelding (e.g., cleaning).
4. Perform rewelding following qualified work instructions.