中文摘要：

零件尺寸微型化带来了“尺度效应”等问题，对塑性成形理论、设备和工艺等都提出了更高的要求。针对微挤压中冷热成形的不足，提出了温挤压微成形工艺。在借鉴现有微成形装置的基础上给出了自行设计的温挤压微成形系统，并对其工作原理进行了阐述。为了探索坯料在微挤压筒内的流动行为，利用ABAQUS／Explicit模块对温挤压微成形进行了数值模拟，着重分析了210℃时温挤过程中的应力分布以及不同摩擦条件下金属的流变行为，揭示了不同工艺参数对温挤压微成形规律的影响，从而为其模具优化设计提供科学的理论依据。

英文摘要：

One of manding new req the main occurring problems in miniaturization of part size is size effects, which deuirements especially on microforming theory, apparatus and process etc. Warm microextrusion process is proposed in view of micro extrusion in cold and hot forming insufficiency. Then, the self-designed warm microextrusion system is presented in the review of the state of art in microforming apparatus, and its principle is carried on the elaboration. In order to explore the flowing behavior of workpiece in the microextruding cylinder, ABAQUS/Explicit module is utilized to carry on the numerical simulation for warm microextrusion,the stress distribution and metal flowing behavior under different friction conditions in the warm extruding process at 210℃ are analyzed. From the results,we can obtain the influence of the different process parameters on warm microextrusion and the corresponding microforming laws,which offers the scientific theoretical foundation on its mould optimization design.