[email protected]

Welding technology of 45 steel and 20MnTiB alloy steel

The welding technology of 45 steel and 20MnTiB alloy steel was studied based on theory analysis and test in this paper.The analysis showed that the carbon equivalent of the two materials were greater than 0.4%.The harden-ability of steel and the cold crack of welding joint sensibility were strong.The heat affect zone(HAZ) at the side of 20MnTiB was easily soften due to the large heat input.To