区熔连铸法制备单晶铜的铸型温度场分布  

Mould Temperature Distribution in Manufacturing Single-crystal Copper by Zone Melting Heated Mould Continuous Casting

作　　者：刘振亭[1,2] 李炳[2] 范新会[2] 王鑫[2] 严文[2] 陈建[2] 

机构地区：[1]西北工业大学材料学院,西安710072 [2]西安工业大学材料与化工学院,西安710032

出　　处：《西安工业大学学报》2009年第5期447-451,共5页Journal of Xi’an Technological University

基　　金：国家自然科学基金(59971033);陕西省自然科学基金(2003E101)

摘　　要：利用区域熔化-热型连铸法制备单晶铜线材这项新技术中,能否通过控制不同的加热功率和牵引速度来控制铸型温度场的合理分布是成功生产单晶线材的关键.本实验在加热功率为7 kW、8 kW和9 kW,牵引速度为40 r/min6、0 r/min、80 r/min和100 r/min,对金属钼丝牵引的铸型温度和型口温度进行了测量,并对每组线材的组织演化过程及单晶的生长方向进行观察、分析和标定.结果显示,铸型温度主要受加热功率控制,而型口温度主要受牵引速度的影响;当加热功率与牵引速度在一定范围内匹配时,铸型温度场分布合理,可在一个较大的工艺控制范围内生产出无限长小直径单晶铜线材.While using zone melting heated mould continuous casting method to produce single-crystal copper wire, the mould temperature field distribution, which is controlled by the different rate of heating power and traction, is the key factor. In the experiments, the temperature of casting mould was measured and microstructure evolution process and crystal growth direction were observed, analyzed and demarcated,under the condition of heating power of 7 kW,8 kW and 9 kW and traction speed of 40 r/ min, 60 r/min, 80 r/min and 100 r/min and traction by metal molybdenum wire. The results showed that the mould temperature is mainly affected by the heating power and the casting mould tip temperature is mainly affected by the speed of traction. When the rate of heating power and traction are matched in a certain extent, the mould temperature field distribution is reasonable and infinite length single-crystal copper wire with small diameter can be manufactured by these process parameters in a larger range.

关 键 词：单晶铜线材 区域熔化 热型连铸 加热功率 牵引速度 温度场 

分 类 号：TG249.7[金属学及工艺—铸造]