About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Embedded Sensors to Experimental Evaluate Binder Curing in 3D Printed Sand Molds for Metal Casting |
Author(s) |
Eric MacDonald, Nathaniel Bryant, Jerry Thiel, Janely Villela, Juan Owen Villela |
On-Site Speaker (Planned) |
Janely Villela |
Abstract Scope |
The benefits of additive manufacturing for fabricating complex sacrificial sand molds for geometrically-complex metal castings is revolutionizing the foundry industry driven by a digital manufacturing paradigm. The design freedom of 3D printing allows for new mold designs, not possible with traditional approaches. However, research on the curing time, including the aging of printed molds, requires more exploration. This study describes the experimental exploration of 3D printed specimens in which embedded environmental sensors were integrated into sand blocks during an interruption and fully encapsulated in bound sand. After 28 days, humidity, volatile organic compounds, and temperature were captured and accumulated metrics for three environmental treatments were calculated. Mechanical testing of the blocks along with standard test specimens subjected to the same conditions were conducted. The sand structures held in high humidity were statistically significantly weaker than the other treatments based on the hypothesis that humidity impedes curing. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |