薄壁Y型三通管内高压成形及补料比的影响  

Investigation of Hydroforming Thin-walled Y-shaped Three-way Tubes and Effects of Axial Feed Ratio

作　　者：陈浩[1] 刘钢[2] 苑世剑[2] 滕步刚[2] 

机构地区：[1]首都航天机械公司,北京100076 [2]哈尔滨工业大学金属精密热加工国家级重点实验室,哈尔滨150001

出　　处：《航天制造技术》2009年第4期1-4,共4页Aerospace Manufacturing Technology

基　　金：国家杰出青年基金资助项目(50525516)

摘　　要：面向航空航天轻量化制造对超薄三通管的需求,开展了不锈钢和铝合金薄壁三通管内高压成形研究。通过内高压成形实验研究,给出Y型不锈钢三通和铝合金三通内高压成形典型缺陷,采用合理的加载路径和预成形工序,实现了径厚比(原始管材直径和壁厚的比值)为183的超薄不锈钢Y型三通管和径厚比为40的铝合金薄壁三通管内高压成形。通过不同补料比Y型三通管内高压成形实验研究,分析了补料比对Y型三通管壁厚和形状的影响,指出因Y型三通管两端非对称,补料比是Y型三通管内高压成形的关键工艺参数。Hydroforming processes of a thin-walled stainless steel and an aluminum alloy three-way tube are investigated to meet the lightweight demand of aerospace craft. Through experimental research, typical defects in hydroforming of Y-shaped three-way tubes of stainless steel and aluminum alloy are found out. By applying reasonable loading path and preforming process, the thin-walled stainless steel three-way tube with a diameter-to-thickness ratio of 183 and the aluminum three-way tube with a ratio of 40 are produced. Effects of axial feed ratio on thickness distribution and profile of the three-way tube are analyzed through hydroforming experiments with different axial feed ratios. It is concluded that because the Y-shaped three-way tube is asymmetric, the axial feed is a vital parameter to form the three-way tube.

关 键 词：Y型三通管 内高压成形 液压成形 薄壁管件 

分 类 号：TG306[金属学及工艺—金属压力加工]