Experimental and Simulation Analysis of the Successful Production of Heavy-Gauge Steel Plate by the Clad Rolling Process

Abstract

Abstract Heavy-gauge Q235 steel plate was successfully roll bonded, and this process was simulated using MARC software. The test results revealed that the chosen ultrasonic testing method satisfies Ⅰ level requirements and the mechanical properties of the materials fully meet the necessary standards. There were uniform ferrite+pearlite microstructures and sound bond areas at the bond interface. Simultaneously, fracture analysis revealed ductile fracture. Using EDS analysis, oxide+MnS inclusions were detected in sample indentations. The MARC simulation showed that after the first rolling pass, little equivalent strain occurred at the center of slab. At the third hot rolling pass, the equivalent strain of the center increased to 0.5. When rolling the last pass, the equivalent strain tended to be uniform in the roll gap region.