Cylindrical Pin Embossment on A5083 Aluminum Alloy Substrate Fabricated by Friction Stir Forming
Cylindrical Pin Embossment on A5083 Aluminum Alloy Substrate Fabricated by Friction Stir Forming
复制标题
搅拌摩擦成型A5083铝合金基体圆柱销压花
DOI：
10.4028/www.scientific.net/kem.730.253
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
T. Nishihara
中科院分区：
文献类型：
--
作者：
T. Ohashi;H. Tabatabaei;T. Nishihara
本文报道了在JIS A5083铝合金中规板上进行圆柱销压纹的搅拌摩擦成形。将基材置于压印模上，并在其背面进行摩擦搅拌。模具顶部有直径1mm，间距1.5mm，深0.5mm的细孔，由于摩擦搅拌产生的高压和热量，物料成功填充。采用三种不同肩径的工具，单道次测量可变形区域。因此，更快的主轴速度，更慢的刀具进给速度和更大的刀具肩有助于更广泛的完全成形销。挤压的材料，以模腔似乎主要是限制在肩的区域下。随着FSF工具肩直径的增大，完整销带宽度与肩直径的比值增大。因此，一个更大的肩是更有效的大范围压花与一个单一的通行证。此外，我们用非接触式三维测量系统评估了成形引脚的形状。完全成形销的高度精度在±0.013mm以内，与机械加工相当。
This paper reports friction-stir forming (FSF) of cylindrical pin embossments on JIS A5083 aluminum alloy medium gauge plate. A substrate material was put on an emboss die and conducted friction stirring on its back surface. The die has 1mm diameter and 0.5mm deep fine holes at 1.5mm pitch on its top, and the material successfully filled them due to high pressure and heat caused by friction stirring. Three tools having different shoulder diameter were utilized to investigate the deformable area with a single pass. As a consequence, faster spindle speed, slower tool feed rate, and larger tool shoulder contribute to a wider range of completely formed pins. Extrusion of the material to the die cavity seemed to be mostly limited under the area of the shoulder. The ratios of the band width of the complete pins to the shoulder diameter were increased with the larger diameter of the shoulder of the FSF tool. Therefore, a larger shoulder was more effective for wide-range embossing with a single pass. In addition, we evaluated the shape of formed pins with a non-contact 3D measurement system. Accuracy of the height of the completely formed pins was within ±0.013mm, which was comparable with machining.