共查询到18条相似文献,搜索用时 78 毫秒
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陶瓷粉末注射成型计算机模拟研究与应用 总被引:1,自引:0,他引:1
本文介绍了计算机模拟软件在陶瓷粉末注射成型工艺中的应用现状,举例说明了C-Mold软件在陶瓷粉末注射成形工艺模拟薄体半球的填充,并与实验的实际情况做比较,以探讨陶瓷材料在充填过程中的现象。 相似文献
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电磁成形技术作为高能、高效率技术用在粉末近终成形方面有着传统成形方法不能比拟的优越性,在功能陶瓷行业有巨大的应用价值。本文阐述了电磁成形的基本原理和电磁粉末压制,介绍了电磁成形技术在功能陶瓷行业的应用及前景。 相似文献
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金属粉末注射成型工艺 总被引:6,自引:0,他引:6
将现代塑料注射成型技术引入粉末冶金领域,不但扩大注射成型技术的应用,同时也推动粉末冶金工艺的发展。详细讨论金属粉末注射成型工艺及其应用,对其材料选择,产品与模具的设计、注射成型工艺过程及烧结工艺过程进行了系统的分析,并展望了该工艺中金属粉末、粘结剂、注射成型装备和工艺过程数值模拟软件等方面的发展趋势。 相似文献
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Polyphenylene sulfide (PPS) is an engineering plastic with excellent thermal, mechanical, and electrical properties, and has received considerable attention during the last few years. There are numerous reports on the crystallization behavior and physical properties of PPS (1-7). This polymer can be processed by conventional melt-processing techniques such as injection molding, compression molding, etc., and also by powder metallurgical technique. However, there are few reports on the powder processing of PPS (8, 9). 相似文献
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《Ceramics International》2016,42(8):9475-9481
A powder injection molding process to fabricate a high-aspect-ratio piezoelectric microarray was developed. The reverse shaped sacrificial mold insert was developed by X-ray micromachining, and then insert-type injection molding was conducted to fabricate the piezoelectric microarray structure. For the micro-powder injection molding, rheological properties of the powder binder mixture were evaluated and analyzed. The measured flow behavior exponent was 0.44 and the flow activation energy was 83 kJ/mol−1. Based on the analyzed rheological property, injection molding conditions were optimized. The rheological property and the injection molding conditions were crucial to ensure complete filling. Using the optimized conditions, two high-aspect-ratio piezoelectric microarrays were fabricated: (i) 20-μm patterns with 1:5 aspect ratio and (ii) 40-μm patterns with 1:10 aspect ratio. 相似文献
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陶瓷粉体对注射成型流变特性的影响 总被引:2,自引:0,他引:2
本文综述了陶瓷成型中固相体积分数与相对粘度的关系,研究了具有不同颗粒直径的Si3N4粉体对注射成型流变学的影响,根据颗粒级配理论,通过对不同分布的Si3N4粉体进行连续级配,以减小注射成型粘度。 相似文献