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钛合金变截面薄壁管流体力学成形工艺
英文标题:Hydromechanical forming process of titanium alloy thin-walled tubes with variable cross-section
作者:袁秦峰 梁必成 孙镭 王以华 
单位:浙江申吉钛业股份有限公司 上海交大中京锻压有限公 
关键词:流体力学成形 钛合金 变截面薄壁管 成形装置 液体挤压 缩径 
分类号:TG318
出版年,卷(期):页码:2020,45(10):80-85
摘要:

 介绍用流体力学成形方法来完成沿轴向的变截面薄壁管成形装置及工艺。研究结果表明:与缩径相比,液体挤压能够增加有限的变形程度至26%;流体力学成形的薄壁管与缩颈和在动芯棒上液体挤压成形的薄壁管相比,由于前者管坯周围均有液体支撑,管内也无需填充液体或填料,驱动力亦采用无冲击压力液体,故其能够扩大各种相对变形厚度S0/D0的管坯的变形程度至33%,流体力学成形薄壁管工艺甚至能够优化相应的σz和p值。在管坯流体力学成形的周期中,变形前的管坯型腔无芯棒或堵头装置,变形后无需从型腔中抽出芯棒或堵头。本例变形程度达到33.3%,劳动生产率达40~50件·h-1。

 The forming device and process of thin-walled tube with variable section along the axial direction were realized by the hydromechanical forming method. The results show that compared with necking, liquid extrusion increases the limited degree of deformation to 26%. Compared with necking and liquid extrusion on the moving mandrel, the deformation degree of various relative deformation thickness S0/D0 for tube blank can be expanded to 33%, and the corresponding σz and p values are optimized in the hydromechanical forming process of thin-walled tube because there is liquid support around blank,and there is no need of filling liquid or filler in the tube, then the driving force is also a non-impact pressure liquid during the hydromechanical forming. Furthermore, in the cycle of hydromechanical forming for tube blank, there is no mandrel or plug device in the tube blank cavity before deformation, and there is no need to extract the mandrel or plug from the cavity after deformation. Thus, the deformation degree of this example reaches 33.3%, and the labor productivity reaches 40-50 pieces·h-1.

基金项目:
作者简介:
袁秦峰(1985-),男,学士,工程师 E-mail:rraayy_yqf@126.com 通讯作者:王以华(1944-),男,本科,研究员 E-mail:yhw006@sohu.com
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