| 工艺参数对金属粉末共注射成形芯层熔体形貌的影响 |
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| 引用本文： | 王光耀,何浩,李益民,张健光.工艺参数对金属粉末共注射成形芯层熔体形貌的影响[J].中国有色金属学报,2011(8). |
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| 作者姓名： | 王光耀 何浩 李益民 张健光 |
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| 作者单位： | 中南大学粉末冶金国家重点实验室; |
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| 基金项目： | 国家高技术研究发展计划资助项目(2007AA03Z114); 国家自然科学基金创新研究群体基金资助项目(50721003) |
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| 摘 要： | 分别以316L(40%,体积分数)、316L(60%)为芯、壳层喂料,研究工艺参数如壳层熔体温度、壳层注射速度和延迟时间对粉末共注射芯层熔体形貌的影响;分析工艺参数对金属共注射芯层形貌影响的流变学机理。结果表明:芯层熔体前沿呈蘑菇状;固定芯层熔体温度,随着壳层熔体温度的升高,芯层穿透深度从148 mm减小到136 mm,最大穿透宽度从133 mm增加到139 mm;随壳层注射速度的增加,芯层穿透深度从148 mm减小到143 mm,而芯层穿透宽度的变化规律不明显;随着芯层熔体延迟时间的增大,芯层穿透深度从146 mm增加到154 mm,穿透宽度从118 mm增加到136 mm。
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| 关 键 词： | 金属粉末共注射成形 工艺参数 芯层熔体形貌 流变学 芯、壳层黏度比 |
Effects of processing parameters on core melt morphology of metal powder co-injection molding |
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| WANG Guang-yao,HE Hao,LI Yi-min,ZHANG Jian-guang.Effects of processing parameters on core melt morphology of metal powder co-injection molding[J].The Chinese Journal of Nonferrous Metals,2011(8). |
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| Authors: | WANG Guang-yao HE Hao LI Yi-min ZHANG Jian-guang |
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| Affiliation: | WANG Guang-yao,HE Hao,LI Yi-min,ZHANG Jian-guang (State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China) |
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| Abstract: | Using two feedstocks,316L(60%) and 316L(40%),as core and skin feedstocks,the effects of processing parameters,such as skin melt temperature,skin velocity and delay time,on the core melt morphology of metal co-injection molding were studied.The mechanism of the effect of processing parameters on the core melt morphology was studied on the basis of rheological theory.The results show that core melt front shows the shape of mushroom.With the increase of skin melt temperature,the penetration depth decreases fro... |
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| Keywords: | metal powder co-injection molding processing parameters core melt morphology rheology core-skin viscosity ratio |
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