Welding technology and microstructure and properties of welded joint of high strength and hardness alloy steel for tandem GMAW

Tandem GMAW (gas metal arc welding) is high efficiency welding technology for high strength and hardness alloy steel in heavy vehicles was studied.Austenitic stainless steel wire was adopted to make welding process experiment for high strength and hardness alloy steel, and the performance and microstructure of the joint were researched.The experiment results proved the good joint of high strength and hardness alloy steel was attained with tandem GMAW.