BUILDABILITY OF MORTAR FEEDSTOCK IN MATERIAL EXTRUSION ADDITIVE MANUFACTURING

被引：0

作者：

Park, Jinsoo ^{[1
]}

Lee, Hojae ^{[2
]}

Choi, Hanshin ^{[1
]}

机构：

[1] Korea Inst Ind Technol, Adv Mat & Proc R&D Grp, 156 Gaetbeol Ro, Incheon, South Korea

[2] Korea Inst Civil Engn & Bldg Technol, Goyang, South Korea

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2020年 / 65卷 / 03期

关键词：

additive manufacturing; mortar feedstock; shape retention ability; buildability; overlaying mode;

D O I：

10.24425/amm.2020.133219

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Mortar feedstock is extruded to form bead and it is selectively placed line by line in the material extrusion additive manufacturing. With respects to part building process healthiness, load-supporting ability of overlaid beads is emphasized as buildability. Buildability is primarily dependent on thixotropic properties of feedstock and vertical overlapping schedule. In the present study, water-to-binder (w/b) ratio was chosen as material aspect to assess buildability. Uneven bead shape evolution and premature failure were highlighted owing to low yield stress of high w/b ratio feedstock. Feedstock with optimum w/b ratio showed good buildability even at the interval time of 19 sec.

引用

页码：1069 / 1072

页数：4

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