Trial and Comprehensive Evaluation of the Property for Low Alloy Cost DH36 Grade Hull Structural Plate
LEI Ke
Abstract：To reduce the cost, although the addition of grain refining element V was cancelled in the process of steel-making for DH36, and the performance of DH36 by adjusting the rolling parameter in the approved range can be ensured. The results of comprehensively evaluating and the properties of trial DH36 showed that the microstructure is the ferrite and pearlite, the ferrite grain size grade is no less than 8.5, the absorbed energy of impact test is no less than 80 J at-40 ℃, the FATT is lower than-20 ℃, the comprehensive mechanical properties in rolling condition are good and meet the requirements of society rule. The mechanical properties in welding are a few lower than those in rolling condition, but can meet the requirements of society rule too. And finally the cost of 25 Yuan RMB per ton of steel can be reduced.
Keywords：DH36 grade hull structural platelow of alloy costmechanical propertyimpact toughness
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：3( 11-13 )