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Quick-Delivery Mold Fabricated via Stereolithography to Enhance Manufacturing Efficiency

立体光刻 模具 材料科学 3D打印 制造工程 工程制图 三维打印 纳米技术 工艺工程 工程类 复合材料
作者
Jae Hyang Lee,Seonghwan Park,Jongwoo Lim,Hyung Sun Yoon,Jae Won Choi,Cheol Woo Ha,Jiyong Park
出处
期刊:Micromachines [MDPI AG]
卷期号:15 (11): 1345-1345
标识
DOI:10.3390/mi15111345
摘要

The ever-growing demand for reducing costs and decreasing the time to market in today’s plastics industry makes rapid tooling and rapid prototyping highly researched areas. Stereolithography (SLA)-manufactured injection mold inserts make it possible to produce prototype parts rapidly and cost-effectively. To utilize SLA in the injection molding industry, two steps have to be considered. The first is to identify suitable SLA process and post-thermal curing process parameters to enhance the mechanical and thermal characteristics. The second is to verify the applicability of SLA-manufactured molds for use in the injection molding industry. IA comprehensive study was performed to find the optimum process parameters for an SLA mold with excellent mechanical and thermal properties and to verify the applicability of the mold. First of all, the mechanical and thermal properties of samples manufactured based on various laser powers and heat treatment at different temperatures were analyzed with a tensile test, DSC, and TMA according to the degree of cure. On the basis of the results from those tests, an SLA mold was designed and fabricated with the optimum mechanical and thermal properties. In addition, the SLA mold was assembled into an injection machine, and an injection molding test was conducted. The SLA mold endured during the injection cycle, and 500 shots were successfully injected without damaging the mold, which resulted in reaching the quick-delivery mold standard. Finally, we demonstrate that SLA is an effective technology to produce molds for use in the injection molding industry.

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