Study on the Effect of the Flame Cutting on the Fatigue Properties of Q345

Q345 is a material which is applied widely in wheel loader boom. The loader boom is manufactured by flame cutting process, while the flame cutting is a special process which will change the material mechanic properties. So it is necessary to consider the effect of the flame cutting on the static and fatigue properties of Q345. In this paper, a test about the static characteristics and fatigue properties of Q345 was launched, and the effect of the flame cutting was considered, as the result, the law affected by the flame cutting on the fatigue properties of Q345 was obtained.