Four-layer aluminum alloy brazing plate with high corrosion resistance

The four-layer aluminum alloy brazing plate comprises a first brazing plate body, a threaded opening and a threaded connecting rod, an inserting block is installed on the side face of a fixing plate, a positioning column is arranged below the inserting block, the positioning column is arranged on the side face of the fixing plate, and the threaded opening is connected with the threaded connecting rod. The threaded opening is formed in the first fixing piece and the second fixing piece, and the threaded opening and the threaded connecting rod are in threaded connection. The inserting blocks, the square inserting grooves, the positioning columns, the positioning holes, the threaded openings, the threaded connecting rods and the cylindrical handles are designed to jointly form a structure convenient to assemble, so that the first brazing plate body and the second brazing plate body are more rapidly and simply assembled and disassembled; the first coating layer, the interlayer, the core layer and the second coati