热等静压工艺制备的Ti-6Al-4V薄壁筒的切削加工
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1.湖南科技大学智能制造研究院,湘潭 411201;2.湖南科技大学难加工材料高效精密加工湖南省重点实验室,湘潭 411201;3.华南理工大学机械与汽车工程学院,广州 510641

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国家自然科学基金项目(51805165),湖南省自然科学基金项目(2019JJ50159)


Machining of Ti-6Al-4V Thin-walled Cylinders Prepared With Hot Isostatic Pressing Technology
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Affiliation:

1.Intelligent Manufacturing Institute,Hunan University of Science and Technology,Taiyuan 030051;2.Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of Difficult-to-Cut Material,Hunan University of Science and Technology,Xiangtan 411201;3.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640

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    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。

    Abstract:

    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.

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孙富建,屈盛官,邓朝晖.热等静压工艺制备的Ti-6Al-4V薄壁筒的切削加工[J].宇航材料工艺,2020,50(3):95-99.

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  • 收稿日期:2019-04-30
  • 最后修改日期:2020-05-04
  • 录用日期:2019-06-18
  • 在线发布日期: 2020-06-17