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Heat Treatment of FDM Parts to Determine Effect on 3D Printing: UT-Arlington Study—The 20th China(Guangzhou)Int’l Heat Treatment, Industrial Furnace Exhibition
4/20/2019 热处理展-工业炉展-heat treatment expo-furnace expo |
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| A University of Texas at Arlington thesis student recently
investigated thermal annealing to determine how to increase inter-bead
bond strength overall in 3D printing processes.
Rhugdhrivya Rane
tackled the dilemma of weak tensile strength in FDM parts and whether
parameters chosen by the user — such as temperature ranges and pressure
gradients — can affect an increase in inter-bead bond strength. The
researcher used thermal annealing, and thermal annealing with
unidirectional mechanical pressure in the Z direction, 3D printing a
variety of specimens in ABS. The method of 3D printing was chosen due to
its increased popularity in mainstream manufacturing.
“The
parts were printed using two different sets of print parameters: high
and low settings, to investigate the effect of heat treatment on both
sets of print parameters. The values of temperature, time and applied
pressure during heat treatment were varied to obtain a detailed
comparative study and the correlation between the given variables and
the increase in ultimate tensile strength.” ~ Rane
The
discovery was that “higher temperatures and longer exposure to heat
produced better tensile strength, along with increased ductility.”
“Though
thermal annealing and uniaxial pressure cause an increase in the
strength of the parts, the print parameters play a vital role in
determining the initial mechanical properties of the parts. When the
parts are fabricated with a higher value of flow rate and extrusion
temperature, they exhibit significantly higher mechanical properties as
compared to parts printed with substandard setting,” concluded the
researchers. “Thus, by controlling the print parameters and using the
right values of temperature and pressure we can see substantial increase
in strength of FDM parts.”
热处理展-工业炉展-2019第二十届广州国际热处理、工业炉展览会-中国效果最好的热处理工业炉展--巨浪展览
—The 20th China(Guangzhou)Int’l Heat Treatment, Industrial Furnace Exhibition
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