PREPARATION METHOD OF TMCP DOUBLE PHASE STAINLESS STEEL COMPOSITE BOARD FOR SHIP

摘要

The invention relates to a preparation method of a TMCP double phase stainless steel composite board for a ship. The double phase stainless steel composite board for the ship is prepared by the following steps: blank selection, surface treatment, separant brushing, assembling, electron beam sealing, heating, rolling, online quenching, straightening, cutting and board dividing and the like. The double phase stainless steel composite board for the ship is good in metallurgical bonding and excellent in corrosion resistance and structural strength. Through a TMCP process, a good mechanical property of a substrate ship board is guaranteed. The substrate ship board which is rolled, quickly quenched and cooled on line, and a disadvantageous precipitated phase of a composite material is controlled to be separated out, and meanwhile, the composite material is good corrosion resistance as the method is replaced by an online process. The substrate is a low-carbon designed blank, and the prepared composite board is low in carbon equivalent of the substrate, good in welding property and convenient for field construction. In addition, the composite board needs not to be thermally treated, so that a good comprehensive performance can be obtained.