| 选择性激光烧结制件冷等静压工艺及模拟 |
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| 引用本文： | 杜艳迎,史玉升,魏青松.选择性激光烧结制件冷等静压工艺及模拟[J].激光技术,2014,38(1):96-100. |
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| 作者姓名： | 杜艳迎 史玉升 魏青松 |
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| 作者单位： | 1.武汉理工大学 物流工程学院 港口装卸技术交通运输行业重点实验室, 武汉 430063; |
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| 基金项目： | 中央高校基本科研业务费专项基金资助项目（2012-Ⅳ-081） |
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| 摘 要： | 为了提高选择性激光烧结制件的相对密度，使用冷等静压进行致密化。在Drucker-Prager-cap模型的基础上对选择性激光烧结制件的冷等静压过程进行数值模拟，并对模拟结果进行了理论分析和实验验证。结果表明，通过冷等静压工艺可使选择性激光烧结制件的相对密度明显提高，制件收缩比较均匀，典型尺寸的实验结果与目标尺寸的误差在0.41mm以内，模拟结果与实验比较符合。对选择性激光烧结制件进行冷等静压处理，拓展了粉末激光快速成形技术的应用领域，为其应用于工程实际奠定了技术和实验基础。
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| 关 键 词： | 材料 相对密度 模拟 选择性激光烧结 |
| 收稿时间： | 2013-03-15 |
| 修稿时间： | 2013-04-24 |
Technology and simulation of cold isostatic pressing of selective laser sintered parts |
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| Abstract: | In order to improve the relative density of parts made of selective laser sintering (SLS), cold isostatic pressing (CIP) was carried out for densification. Numerical simulations of CIP SLS parts were made based on Drucker-Prager-cap model. Theoretical analysis and experimental verification were conducted based on simulation results. The results show the relative density of SLS parts was enhanced obviously. The contraction of the parts was uniform. The errors between experimental results and wanted dimensions of main dimensions were within 0.41mm, which indicated the simulation results accorded with the experiment results. The post-process of CIP SLS parts develops the application field of powder laser rapid prototype that lays the technical and experimental foundation for engineering practice. |
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| Keywords: | materials relative density simulation selective laser sintering |
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