关键词: 铝-钢复合带材, 冷轧复合, 嵌入式, 力学性能, 结合性能

Abstract: With three-step method “surface process + cold rolling bonding + annealing treatment", i. e. first, treating the surface of 4mm 08 Al steel strip (/% : 0. 01G, 0. 018A1) and 0.23 mm 4A60 aluminium strip by brushing, then single pass-rolled by 60% reduction for the aluminium-steel strip using high precision Φ420 mm four high rolling mill with 30 kN forward tension to get large deformation cladding, and annealing treatment at 520 ℃ for 24 h in a bell type annealing furnace, the cold-rolled 1. 7 mm 4A60 aluminium-08Al steel cladding strip with 80 〜90 μm extra-thin cladding layer is developed. The microstructure of 08Al steel in cladding strip is equiaxed ferrite with average grain size 15 μm, its tensile strength ≥320MPa and elongation ≥28%, and the bending properties of cladding strip also meet the requirement of standard. The intermetallic compound is not found in aluminum-steel interface region of cladding strip brazed at (600 ± 10) ℃, and the delamination phenomenon is not observed at interface of aluminium and steel.