Causes and Countermeasures of Unqualified Elongation for High Strength Hull Plate
Mechanical properties and microstructure are analyzed for the unqualified elongation problem of AH36 grade high strength hull plate.The results show that the tensile strength of the steel plate with unqualified elongation is higher,while the hard phase structure and MnS inclusions exist in the plate center.By taking measures to optimize the secondary refining process,continuous casting process,controlled rolling and controlled cooling process,the steel clean-liness,macrostructure quality of continuous casting slab and the stability of the steel plate mechanical properties are im-proved,the qualification rate of the mechanical properties for AH36 grade hull plate reaches to 100％.
Hull plateElongationControlled rolling and controlled coolingInclusion
万方数据
维普
