Study on Formation Mechanism of Gray Iron Welding Cold Crack by Finite Element Method
Gray iron is of more C,S,P,low-intensity,poor plastic,these characteristics determine that its welding ability is poor,welded joints are easy to produce cold heat cracks. Using finite element analysis software ANSYS,a finite element model was built,the thermal stress analysis was done,and the cause of the cold crack formation was analyzed. At the same time,the result showed that the numerical simulation results basically consistent with the experiment results by the verifying experiment.