Abstract:In order to improve the annealing efficiency of 0.5 mm semi-hard C5071 copper alloy strip produced by air cushion furnace, the current 700 ℃ annealing process was optimized to match the 600 ℃ annealing process of copper and bronze in air cushion furnace.Taking the 600 ℃ annealing process of air cushion furnace as the research object, the effects of different annealing processes of air cushion furnace on the microstructure and properties of strip were studied. The results show that when the thickness of the strip is controlled at 0.68 mm, the material is completely recrystallized by using the air cushion furnace annealing process at 600 ℃ and 40 m/min. After the finished product is rolled, 0.5 mm semi-hard C5071 copper alloy strip with expected performance and requirements is obtained.