The paper introduces the common bonding defects in the production of ultra-thin copper strips in bell-type furnace,and analyzes the advantages and disadvantages of air-cushion continuous annealing furnace and bell-type annealing furnace in the heat treatment of ultra-thin copper strips.On the basis of analyzing the formation mechanism of bonding defects in the annealing process of bell-type furnace,an effective method to reduce bonding defects is investigated by controlling the re-twisting tension,using anti-adhesive agents,optimizing the annealing process parameters,improving the quality of incoming plate,reasonably controlling the surface roughness of strip,optimizing the loading method and enhancing the uniformity of the furnace temperature and so on.The annealing process parameters of the bell-type furnace strip applicable to 0.05～0.30 mm copper strip was obtained through a large number of tests and result analysis,including annealing temperature,heat-up rate,holding time,etc.,to ensure a good surface quality and qualified mechanical properties of the ultra-thin copper strip after annealing.The research results show that a reasonable annealing process and effective defect control measures are the key to solving the bonding of ultra-thin copper strips annealed in bell-type furnace.
关键词
超薄铜带/钟罩炉/黏结/退火工艺
Key words
ultra-thin copper strip/bell-type furnace/bonding/annealing process
维普
万方数据