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Rapid thermal cycling with low thermal inertia tools
Author(s) -
Xu Ronald X.,
Sachs Emanuel
Publication year - 2009
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21261
Subject(s) - materials science , molding (decorative) , fabrication , temperature cycling , mold , flexibility (engineering) , inertia , thermal , mechanical engineering , benchmark (surveying) , thermal inertia , process (computing) , transfer molding , composite material , computer science , engineering , physics , classical mechanics , medicine , statistics , alternative medicine , mathematics , geodesy , pathology , meteorology , geography , operating system
Abstract Solid freeform fabrication processes offer the manufacturing flexibility for tools with low thermal inertia and internal conformal channels for rapid thermal cycling in injection molding. This article analyzed each step of a rapid thermal cycling process and provided quantitative guidance for tooling design. The proposed design methodology was tested on a three‐dimensional (3D) printed benchmark tool with truss support. Rapid cooling test on the benchmark tool resulted in the mold time constant shorter than 2.3 s and the cavity temperature uniformity better than 3°C. Preliminary tests demonstrated the technical feasibility of using a solid freeform fabrication process to fabricate low thermal inertia tools for improved heat management in injection molding. POLYM. ENG. SCI., 2009. © 2008 Society of Plastics Engineers