Heat Input Compensation Algorithm
The heat input compensation algorithm adjusts the robot's travel speed to keep heat input constant and avoid excessive grain growth in the HAZ.
Physical-Chemical Mode of Action
The algorithm measures current part temperature and adjusts robot speed to keep heat input constant during welding. This prevents uneven cooling and thus grain overgrowth in the heat-affected zone.
Metallurgical Relevance & Welding Risks
Excessive grain growth can lead to poor toughness and increased susceptibility to stress, compromising the steel's structure. This can cause cracking and distortion. The algorithm minimizes this threat.
Workshop Practice & Procedures
To use the algorithm effectively, regularly measure part temperature. Adjust robot speed accordingly to ensure constant heat input. Recommended travel speeds vary by material and process, but generally range from 100 to 200 mm/min.