Shielded metal arc welding is used for 16Mn surfacing and normalizing of welding joints.The structure and mechanical properties of surfacing layer are characterized and analyzed.The results show that:the structure of surfacing layer before heat treatment is low-carbon martensitic,with high strength of hardness and wear resistance,while the structure of surfacing layer after normalizing is ferrite and pearlite.With the normalizing temperature rises,the hardness and wear resistance gradually decrease;sample impact toughness improves,but shows a decreasing trend with the rising normalizing temperature,the fracture morphology is mostly the ductile fracture.
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