Welding-free packing hot rolling composite method

The present invention discloses a welding-free packing hot rolling composite method and belongs to the technical field of rolling. The welding-free packing hot rolling composite method is characterized in that by adopting a single piece form of an upper pack material and a lower pack material separately or simultaneously, pack treatment is carried out on a single piece form of raw material, and cold rolling pressing is carried out on a side fitting part, a head fitting part and a tail fitting part of the upper pack material or the lower pack material correspondingly, and then vacuumizing is carried out to reach negative pressure, then sealing is carried out, then heating is carried out, then rolling is carried out, and high-quality thick plate materials or heterogeneous layered composite material and other products are prepared in a low-cost and efficient mode on the basis of the previous operations. The welding-free packing hot rolling composite method has the advantages of no welding, a short technological