1Cr18Ni9Ti薄壁曲面件粘性介质内、外压力成形  

Viscous inner and outer pressure forming of 1Cr18Ni9Ti specimen with thin-wall curved surface

作　　者：高铁军[1] 王忠金[1] 宋辉[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《塑性工程学报》2006年第3期40-43,共4页Journal of Plasticity Engineering

基　　金：国家自然科学基金项目(50275035)。

摘　　要：薄壁曲面零件的加工常常采用分体成形、组合焊接的方法,所需工序较多。该文提出粘性介质内、外压力成形方法,可以直接整体成形薄壁曲面零件,不需要成形后的组合焊接,并针对直径变化比达35%的1Cr18Ni9Ti薄壁曲面零件进行了内、外压力成形试验和有限元分析,给出了变形过程粘性介质和坯料的流动规律和缺陷的预测分析,研究结果表明,薄壁曲面零件内、外压力成形是可行的。Workpieces with thin-wall curved surface are usually manufactured by forming parts decomposed and then parts formed assembled through welding, which spend multi-forming-step and too much cost. In this paper, an alternative method employing inner and outer pressure with viscous media is proposed to form this kind of workpieces as a whole. By using numerical simulation and experimental methods, 1Cr18Ni9Ti specimens obtained by the viscous inner and outer pressure forming was analyzed, which the diameter changing ratio of the specimen is 35%. The flowing rules of viscous media and sheet metal and defects occurred in forming process were investigated. Research results show that viscous inner and outer pressure forming of workpieces with thinwall curved surface is feasible.

关 键 词：薄壁曲面件 粘性介质压力成形 内压 外压 

分 类 号：TG302[金属学及工艺—金属压力加工]