| 中高密度系列钨镍合金粉末注射成形喂料的流变性能研究 |
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| 引用本文： | 王世勇,郑振兴,夏伟.中高密度系列钨镍合金粉末注射成形喂料的流变性能研究[J].中国钨业,2007,22(3):23-26. |
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| 作者姓名： | 王世勇 郑振兴 夏伟 |
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| 作者单位： | 华南理工大学,机械工程学院,广东,广州,510640 |
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| 基金项目： | 广东省高校科技成果转化项目 |
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| 摘 要： | 利用XLY-Ⅱ型毛细管流变仪研究3种不同密度(分别为10g/cm3、14 g/cm3、17g/cm3)的钨镍合金粉末注射成形喂料的流变行为,分析了剪切速率、温度以及钨镍成分配比对喂料流变性能的影响。实验结果表明,钨镍合金喂料是一种假塑性流体,其表观粘度随剪切速率的增大、温度的升高而减小;非牛顿指数随温度的升高而增大;钨在合金中所占比重越大,喂料对剪切速率的变化及温度的变化越敏感。
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| 关 键 词： | 钨镍合金 流变性能 金属粉末注射成形 XLY-Ⅱ型流变仪 |
| 文章编号： | 1009-0622（2007）03-0023-04 |
| 修稿时间： | 2007-05-28 |
Rheology Property of Medium and High-density Tungsten-nickel Feedstock in Metal Injection Molding Process |
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| WANG Shi-yong,ZHENG Zhen-xing,Xia Wei.Rheology Property of Medium and High-density Tungsten-nickel Feedstock in Metal Injection Molding Process[J].China Tungsten Industry,2007,22(3):23-26. |
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| Authors: | WANG Shi-yong ZHENG Zhen-xing Xia Wei |
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| Affiliation: | College of Mechanical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China |
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| Abstract: | Rheology properties of three kinds of tungsten-nickel feedstock with different density are studied with XLY-Ⅱ capillary rheometer to determine the effect of shear rate,temperature and tungsten-nickel ratio.Results suggest that tungsten-nickel feedstock is a kind of pseudo-plastic fluid,the apparent viscosity of which declines as shear rate increases or temperature rises;non-Newtonian exponent increases as temperature rises;the tungsten-nickel feedstock becomes more sensitive to shear rate and temperature when the ratio of tungsten increases. |
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| Keywords: | tungsten-nickel alloy rheology property metal injection molding XLY-Ⅱ rheometer |
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