| 金属粉末注射成形用石蜡-油-聚乙烯粘结剂 |
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| 引用本文： | 李益民,李松林,曲选辉,黄伯云.金属粉末注射成形用石蜡-油-聚乙烯粘结剂[J].中南大学学报(自然科学版),2001,32(1):58-61. |
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| 作者姓名： | 李益民 李松林 曲选辉 黄伯云 |
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| 作者单位： | 李益民（中南大学粉末冶金国家重点实验室，湖南长沙 410083）
李松林（中南大学粉末冶金国家重点实验室，湖南长沙 410083）
曲选辉（中南大学粉末冶金国家重点实验室，湖南长沙 410083）
黄伯云（中南大学粉末冶金国家重点实验室，湖南长沙 410083） |
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| 基金项目： | 国家自然科学基金资助项目(59634120)；国家“863”高技术计划资助项目(715-009-009) |
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| 摘 要： | 研制了用于Fe-2Ni粉末注射成形的石蜡-油-聚乙烯粘结剂，选择了石蜡和聚乙烯组分，考察了油的加入对组分相容性、生坯强度、粉末装载量、喂料比热容、溶剂脱脂速率的影响.实验结果表明石蜡-油-聚乙烯粘结剂是热力学不相容的体系；油的加入降低了混炼扭矩、最大粉末装载量和生坯强度，但同时也减少了注射缺陷，并使溶剂脱脂速率增大；加入该粘结剂，可使Fe-2Ni粉末装载量(体积分数)达60％，生坯强度达5.5MPa，溶剂脱脂速率大于2mm/h.
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| 关 键 词： | 金属粉末 注射成形 粘结剂 |
| 文章编号： | 1005-9792(2001)01-0058-04 |
| 修稿时间： | 2000年6月10日 |
Development of a solvent-debinded wax-oil-PE binder for MlM |
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| LI Yi-min,LI Song-lin,QU Xuan-hui,HUANG Bai-yun.Development of a solvent-debinded wax-oil-PE binder for MlM[J].Journal of Central South University:Science and Technology,2001,32(1):58-61. |
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| Authors: | LI Yi-min LI Song-lin QU Xuan-hui HUANG Bai-yun |
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| Abstract: | A new wax-oil-polyethylene binder was developed for Fe-2Ni injection molding. The wax and polyethylene components were chosen. The influence of oil addition on some properties of the binder, including compatiability of ingredients, strength of as-molded parts, powder loading, heat capacity of the feedstock, solvent debinding rate, were investigated. It was shown that wax-oil-polyethylene binder was not a thermodynamic compatible system. The addition of oil decreased the mixing torque, the maximum powder loading and the strength of as-molded parts. At the same time, the addition of oil decreased injection defects and increased the solvent debinding rate. As the new binder mixed with Fe-2Ni powder, the powder loading could reach 60%(volume fraction), the strength of as-molded parts is 5.5 MPa, and the solvent debinding rate is over 2 mm/h. |
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| Keywords: | metal powder injection molding binder |
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