微切削力对快点火Au锥丝靶成型的影响

为解决快点火分解物理研究中锥丝靶的整体成型问题,基于超精密车削技术,提出了制备无缝、无胶锥丝靶的方法。通过建立的Au丝超精密切削成型过程中的微切削力模型,研究了相关工艺条件下微切削力对锥丝靶成型的影响。采用有限元分析方法和实验验证手段研究多种参数Au丝的切削变形问题,获得了微切削力条件下Au丝的变形规律。研究结果表明:微切削力对丝径10μm附近锥丝靶的成型影响较大,对丝径更大的锥丝靶则无明显影响。

Effect of micro cutting force on fabrication of Au cone-wire target for fast ignition

The cone-wire target is an important sample target for researching collimation of hot electron current and has a significant function in fast ignition decomposition experiments. A new approach of fabricating seamless and adhesiveless Au cone-wire target with diamond turning is proposed. A micro cutting force model is established for diamond turning cone-wire target. The influences of micro cutting force on Au cone-wire target shaping are investigated with different cutting conditions based on the micro cutting force model. Cutting deformation of Au wires with different diameter are also studied with finite element method and experimental verification technique. Au wire regular deformation pattern under different micro cutting force conditions is obtained. It is shown that micro cutting force exerts a serious effect on fabrication deformation of cone-wire target with an approximated diameter of 10 m and has no significant effect on large diameter cone-wire target fabrication.