| 含水量和粘结剂含量对硬质合金粉末压坯强度的影响 |
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| 引用本文： | 谭育新,曹竞,石冬怀,李建民.含水量和粘结剂含量对硬质合金粉末压坯强度的影响[J].南方金属,2009(4):8-11. |
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| 作者姓名： | 谭育新 曹竞 石冬怀 李建民 |
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| 作者单位： | 广东省钢铁研究所,广州新莱福磁电有限公司,广东,广州,510640 |
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| 摘 要： | 将硬质合金粉末和聚乙烯醇(PVA)水溶液按一定比例混合、球磨,经喷雾造粒后进行压制成型,研究了含水量和粘结剂含量对粉料特性和压坯强度的影响.研究结果表明:随着含水量的增加,粉料松装密度减小,流动性变差,压坯强度增加.水含量控制在0.06 wt%～0.14 wt%较为适宜,此时的粉料适合自动压制成型,压坯强度较高;当粘结剂含量从1.0 wt%增加到2.0 wt%时,压坯强度从0.76 MPa增加到1.93 MPa,当加入的PVA含量从2.0wt%增加到2.4 wt%时,压坯强度有减小的趋势.在保证坯体强度的前提下,合适的粘结剂含量为1.6 wt%～2.2 wt%.
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| 关 键 词： | 含水量 粘结剂 压坯强度 压制成型 |
Effects of contents of water and binder on the strength of Hard Alloy green compacts |
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| TAN Yu-xin,CAO Jing,SHI Dong-huai,LI Jian-min.Effects of contents of water and binder on the strength of Hard Alloy green compacts[J].Southern Metals,2009(4):8-11. |
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| Authors: | TAN Yu-xin CAO Jing SHI Dong-huai LI Jian-min |
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| Affiliation: | Guangdong Institute of Iron and Steel;Guangzhou New Laifu Magneto-electric Materials Co.;Ltd.;Guangzhou 510640;Guangdong |
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| Abstract: | A mixed powder of Hard Alloy powder and polyvinyl alcohol(PVA) was prepared by blending the powder and PVA solution in a certain proportion,ball milling and atomizing the mixture.Green compacts of Hard Alloy parts were then fabricated by pressing.The effects of concentratios of water and PVA on the strength of the green compacts were investigated.It was found that the strength of the compacts increased with increasing the water content,with an optimal water content varying from 0.06 wt% to 0.14 wt%.And the ... |
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| Keywords: | content of water binder strength of green compacts pressing |
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