蔡晓江
,
唐宏亮
,
倪云龙
,
陈明
宇航材料工艺
doi:10.3969/j.issn.1007-2330.2016.04.016
以正交切削试验为手段,研究T800 CFRP在小切削余量条件下的切削加工过程和表面形成规律,深入探讨了CFRP在精密切削加工中的切削取向、切削参数范围以及刀具刃口钝圆半径等几个关键问题.试验结果表明:CFRP在切削加工中表现出极为显著的各向异性,切削取向非常重要,0°和135°两个纤维方向上获取了较小的切削力,0°和90°两个纤维方向上形成了较为光滑、平整的表面质量.在精密削CFRP的场合,为获得较小的切削力并得到较好的加工表面质量,0°纤维方向角是最佳切削方向,切削速度应达到200 m/min以上,要选择较小的刀具刃口钝圆半径,切削厚度应大于刀具刃口钝圆半径.
关键词:
碳纤维增强树脂基复合材料
,
精密切削
,
切削力
,
表面质量
金属学报(英文版)
Abstract: Laser shock forming (LSF) is a new technique realized by applying an impulsive pressure generated by laser-induced shock wave on the surface of sheet metal. LSF of sheet metal is investigated with experiment and numerical simulation in this paper, the basic theories are introduced, the surface quality and deformation of the processed Titanium sample (TA2) are examined; ABAQUS is used to simulate laser shock forming and the central displacement of the shocked region is measured and compared with the simulation. Overlapped LSF treatment is experimentally carried out to produce groove and simulated. The results show the surface quality and the microstructure with single laser pulse have no remarkable change and ablation is observed on the surface of the sample with overlapped pulses. The deformation of the simulation agrees with the experiment quite well.
关键词:
Laser shock forming
,
数字仿真
,
表面质量
,
变形
Fu QU
,
Huixue JIANG
,
Gaosong WANG
,
Qingfeng ZHU
,
Xiangjie WANG
,
Jianzhong CUI
金属学报(英文版)
doi:10.1016/S1006-7191(08)60107-6
The influences of the cooling style and static magnetic field on the air film casting process were investigated. Ingots of 6063 aluminum alloy were produced by AIRSOL VEIL casting with double-layer cooling water and static magnetic field. Surface segregation, hot crack and variation of solute content along the radius direction of ingot were examined. The results showed that double-layer cooling water can improve the surface quality and avoid of hot crack, which created conditions to increase the casting speed. The electromagnetic casting process can effectively improve the surface quality in high speed casting process, and static magnetic field has a great influence on solute distribution along the radius direction of ingot.
关键词:
Air film casting
,
null
,
null
,
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