Analytical process model for wire plus arc additive manufacturing

被引：67

作者：

Rios, Sergio ^{[1
,2
,3
]}

Colegrove, Paul A. ^{[1
]}

Martina, Filomeno ^{[1
]}

Williams, Stewart W. ^{[1
]}

机构：

[1] Cranfield Univ, Univ Way, Cranfield MK43 0AL, Beds, England

[2] Univ Magallanes, Punta Arenas 01855, Region De Magal, Chile

[3] Univ Magallanes, Punta Arenas 01855, La Antartica Ch, Chile

来源：

ADDITIVE MANUFACTURING | 2018年 / 21卷

关键词：

Wire plus arc additive manufacture; Welding capillarity; Point source conduction; MELT POOL; FABRICATION; DEPOSITION; EFFICIENCY; GEOMETRY;

D O I：

10.1016/j.addma.2018.04.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analytical process model for predicting the layer height and wall width from the process parameters was developed for wire + arc additive manufacture of Ti-6Al-4V, which includes inter-pass temperature and material properties. Capillarity theory predicted that cylindrical deposits were produced where the wall width was less than 12 mm (radius < 6 mm) due to the large value of the surface tension. Power was predicted with an accuracy of +/- 20% for a wide range of conditions for pulsed TIG and plasma deposition. Interesting differences in the power requirements were observed where a surface depression was produced with the plasma process due to differences in melting efficiency and/or convection effects. Finally, it was estimated the impact of controlling the workpiece temperature on the accuracy of the deposit geometry.

引用

页码：651 / 657

页数：7

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