摘要
为了能够提高钛合金薄壁筒的加工效率,利用热等静压工艺制备了两个具有不同结构的Ti-6Al-4V薄壁筒,研究了夹具、填充泥浆和筒结构对Ti-6Al-4V薄壁筒的外圆表面粗糙度和精度的影响。结果显示,Ti-6Al-4V热等静压薄壁筒经过切削加工能够达到精度要求,填充泥浆降低了弹性回弹,提高了薄壁筒外圆精度;筒结构的内圆环和粗大端能够提高刚度,有效降低了外圆表面粗糙度值;夹具尺寸误差对圆度和同轴度影响较大,较大的尺寸误差显著降低了筒的外圆精度。
In order to enhance the machining precision of titanium alloy thin-walled cylinders,two Ti-6Al-4V thin-walled cylinders with different structures were prepared by using hot isostatic pressing technology.The influences of the fixture,poured slurry and cylinder structure on the cylindrical surface roughness and cylindrical precision were studied.The results show that hot isostatic pressing Ti-6Al-4V thin-walled cylinders after machining can reach the accuracy requirements,poured slurry can reduce elastic spring back to improve outer ring precision of the thin-walled cylinders;the inner ring and thick end of the cylinder structure can enhance stiffness to reduce the cylindrical surface roughness effectively;while big fixture layout error can make a significant influence on roundness and coaxiality,the large error remarkably decreases the outer ring precision.
作者
孙富建
屈盛官
邓朝晖
SUN Fujian;QU Shengguan;DENG Zhaohui(Intelligent Manufacturing Institute,Hunan University of Science and Technology,Taiyuan 030051;Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material,Hunan University of Science and Technology,Xiangtan 411201;School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640)
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2020年第3期95-99,共5页
Aerospace Materials & Technology
基金
国家自然科学基金项目(51805165)
湖南省自然科学基金项目(2019JJ50159)。
关键词
热等静压工艺
TI-6AL-4V
薄壁筒
表面粗糙度
外圆精度
Hot isostatic pressing technology
Ti-6Al-4V thin-walled cylinder
Surface roughness
Cylindrical precision
