Preparation method of ultrathin and super-long titanium steel laminated composite plate

Abstract

This invention belongs to the field of metal layered composite material preparation technology, and discloses a method for preparing an ultra-thin and ultra-long titanium-steel layered composite plate. The method first involves explosively bonding a thick cladding titanium plate with a base steel plate using specific parameters to form a titanium-steel layered composite plate. Then, the composite plate is leveled and welded to a thick titanium plate to form a rolled billet, which is then sealed under low vacuum conditions. Finally, the billet undergoes multiple hot and cold rolling passes to obtain an ultra-thin and ultra-long titanium-steel layered composite plate with a thickness of 0.5 mm to 2 mm, a length ≥ 10 m, and a shear strength at the interface ≥ 142 MPa. This invention, by employing a combination of explosive bonding, vacuum welding, and controlled rolling techniques, effectively suppresses the formation of a brittle interfacial layer, avoids rolling delamination, and achieves stable mass production of high-performance ultra-thin and ultra-long composite plates, meeting the needs of high-end large-scale equipment manufacturing and filling a market gap.