Gray cast iron cold welding process characteristics

- Mar 10, 2021-

The feature of cold welding of gray cast iron is that the workpiece to be repaired is not preheated before welding, the welder's working conditions are good, the repairing cost is low, the repairing process is short, and the repairing efficiency is high. Therefore, arc cold welding of cast iron is a development direction, but it also has many limitations, such as low weld strength, poor plasticity, and cracks when weld repair is relatively rigid. In addition, due to the fast cooling rate, the weld is prone to white mouth phenomenon and large area hardened structure.