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首页> 外文会议>International conference on advanced materials research >Evaluation of Direct Rapid Prototyping Pattern for Investment Casting
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Evaluation of Direct Rapid Prototyping Pattern for Investment Casting

机译：直接铸造快速成型原型的评估

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The ability of rapid prototyping(RP)technology to fabricate direct part of any complex shape as a sacrificial pattern in shorter lead time has benefited the foundry industries significantly.The quality of investment casting(IC)parts is directly related to the master pattern fabricated from RP process.The main objective of this study was to evaluate the quality characteristics of various RP patterns that were fabricated by various RP processes which include 3D Printer(3DP),Fused Deposition Modeling(FDM)and Multijet Modeling(MJM). Evaluation of the RP patterns was carried out on dimensional accuracy,surface roughness and pattern shrinkage.Different internal pattern designs for the RP parts were developed using Insight software for FDM process and Solidworks 2011 for other RP systems. In addition to the quality assessments,the effect of the internal pattern designs on the burn out behaviour of the RP patterns was also evaluated. Experimental results showed that FDM and MJM produced patterns with better accuracy,surface roughness and part shrinkage when compared to 3DP.It was evident that the internal pattern structure improved the accuracy of the patterns produced from all RP processes.Results showed that FDM and MJM processes were superior in terms of mold cleanliness when no residual ash was observed during the burn out stage. Significant oxidation of ceramic powder was observed on the molds of the 3DP patterns which need to be removed manually from the molds.
机译：快速成型（RP）技术能够在较短的交货时间内将任何复杂形状的直接部分制成牺牲图案的能力极大地受益于铸造行业。熔模铸造（IC）零件的质量与由RP工艺。本研究的主要目的是评估通过各种RP工艺制造的各种RP模式的质量特性，这些工艺包括3D打印机（3DP），熔融沉积建模（FDM）和多喷射建模（MJM）。对RP图案的尺寸精度，表面粗糙度和图案收缩率进行了评估。使用Insight软件（用于FDM工艺）和Solidworks 2011（用于其他RP系统）为RP零件开发了不同的内部图案设计。除了质量评估外，还评估了内部图案设计对RP图案烧坏行为的影响。实验结果表明，与3DP相比，FDM和MJM产生的图案具有更好的精度，表面粗糙度和零件收缩率。很明显，内部图案结构提高了所有RP工艺产生的图案的准确性。结果表明，FDM和MJM工序当在烧尽阶段未观察到残留的灰分时，在模具清洁度方面具有优异的优势。在需要手动从模具中取出的3DP图案的模具上观察到陶瓷粉末的显着氧化。

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