作　　者： ; ; ; ; ;

机构地区： 华南理工大学机械与汽车工程学院

出　　处： 《华南理工大学学报（自然科学版）》 2007年第3期1-5,共5页

摘　　要： 对直齿微沟槽铜热管的高速充液旋压拉拔成形加工机理进行了研究,建立了微沟槽高速充液旋压成形的几何模型,通过实验发现:微沟槽的加工包括挤压和成形两个阶段;影响微沟槽成形的主要因素包括多齿芯头几何参数、芯头位置、减薄量、拉拔速度、旋压器转速和工作温度等;通过控制挤压深度、进给量、芯头形状与位置等,可加工出不同形状、不同深宽比及不同壁厚的微沟槽;高速充液旋压加工微沟槽在生产上具有可行性,其材料利用率和生产效率高,成本低廉. Inner axial micro grooves of copper heat pipe were manufactured via the high-speed oil-filled spinning with drawing process, and the corresponding mechanism was then investigated. Experimental results show that the manufacturing of micro grooves includes two stages, namely, the extrusion and the forming stages, that the processing of micro grooves is mainly affected by various factors, such as the geometric parameters and working position of the multi-tooth mandrel, the depth reduction, the drawing speed, the spinning speed and the working temperature, that micro grooves with different shapes, depths and depth/width ratios can be obtained by varying the extrusion depth, the feed rate, the mandrel shape and size, and that the high-speed oil-filled spinning is feasible to the manufacturing of micro grooves due to its full material utilization, high efficiency and low cost.

关 键 词： 充液旋压 微沟槽 热管 芯头

领　　域： [金属学及工艺] [金属学及工艺]