摘要
进行了钢-铜、钢-铝冷轧复合实验,即表面处理＋复合轧制＋轧后热处理.结果表明,复合轧制前,必须对基材和复合材料进行表面清洗,基材钢需进行表面毛化处理,要求表面粗糙度为Rz=81～101 μm,较薄的复合材料如铜、铝可不经毛化处理直接复合轧制.钢-铝无张力复合轧制所需总相对压下量为40%≤ε≤60%,钢-铜无张力复合轧制所需的总相对压下量为ε≥70%.应严格控制热处理的退火温度和保温时间,保温时间过长,会削弱复合面的强度;钢-铝退火温度控制在320 ℃左右,保温时间约1 h;钢-铜退火温度在550～600 ℃范围内,保温时间约1.5 h.研究认为复合轧制过程中,带材之间的相对跑偏、厚度比控制是亟待解决的问题.
Compounding experiments on Steel Al and Steel-Cu by cold-rolling, i.e. surface processing＋composite rolling＋heat treatment were carried out. The result shows that before composite rolling, the strips must be cleaned and the surface grinding of base steel must be carried out. It was found that the surface roughness is about R2 =81-101μm; The surface grinding of thinner strips such as copper and aluminum is not absolutely necessary; the total relative deformation is between 40 % and 60 % for Steel-Al, and greater than 70 % for Steel-Cu with zero tension. The annealing temperature is the recrystallization temperature of the lower fusion point material; the holding time is about lh for Steel-Al and 1.5 h for Steel-Cu. The annealing temperature and the holding time must be controlled strictly; and excessive holding time is unfavorable to compounding strength, and it was pointed out that the relative deviation between strips and thickness ratio control are of special significance in composite rolling.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2007年第8期42-45,58,共5页
Journal of Iron and Steel Research
关键词
冷轧
复合材料
表面处理
复合轧制
热处理
cold-rolling
composite steels
surface processing
composite rolling
heat treatment
