Guangxi Hydraulic Power Machinery Research Institute

Microstructural Evolution, HAZ Softening and Failure Behavior of Large-Diameter QT/AR 1045 Steel CDFW Joints

As piston rods for excavator boom hydraulic cylinders shift from integral forging to welded assemblies of separately manufactured rod bodies and rod heads, joint reliability becomes critical to load-bearing performance. In this study, 60 mm diameter quenched-and-tempered/as-rolle...