Device and method for preventing weld intercrystalline corrosion of stainless steel clad plate

The invention discloses a device and method for preventing weld intercrystalline corrosion of a stainless steel clad plate, and belongs to the technical field of preventing weld intercrystalline corrosion of the stainless steel clad plate, the prevention device comprises a welding/cooling device, a transmission device, a detection device, a heat treatment device and an integral control device, and the detection device is in communication connection with the heat treatment device. According to the prevention method, an ultra-low carbon welding material containing a titanium element is selected, and welding is carried out according to welding process parameters of small linear energy, wide weld joints and small current; after welding, the cooling speed is increased by adopting a copper backing plate, spraying and watering and other cooling modes, and the retention time of a welding seam in a sensitization temperature interval is shortened; the heat preservation temperature, time and the like are automatically s