摘要
研究了溶剂脱脂中脱脂率与溶剂、脱脂时间、样品厚度和溶剂温度等参数的关系。结果表明 ,采用多组元低分子有机溶剂的混合物在 4 5℃下溶剂脱脂效果最好。样品厚度对溶剂脱脂时间、脱脂率等的影响显著 ,厚度为 1mm厚的样品在脱脂 4h时 ,其脱脂率可达 70 %以上 ,厚度为 10mm厚的样品在溶剂脱脂 6～ 8h时 ,脱脂率仅 4 3 %。对于直径为 2 0mm厚的大棒 ,溶剂脱脂 2 4～ 3 0h时 ,脱脂量 5 0 %～ 60 % 。
The solvent debinding process was studied, including the relationship of binder loss with solvent composition, debinding time, sample thickness, and solvent debinding temperature and so on. The experiment shows that the multi component low molecule solvent mixture has best results at 45?℃. The effects of sample thickness on solvent debinding time and binder loss are dominant. With the thickness of 1?mm, the binder removal is above 70% after debinding for 4?h, while with the thickness of 10?mm, the binder removal is only 43% after debinding for 6～8?h. For the diameter of 20?mm bar, the binder loss is 50%～60% after debinding for 24～30?h, the residual binder is removed completely by thermal debinding. All experiments show that solvent debinding greatly shortens the subsequent thermal debinding time, and the large thick injected parts can be successfully debound. After solvent debinding, the parts were observed by using scanning electronic microscopy (SEM).
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2001年第4期651-654,共4页
The Chinese Journal of Nonferrous Metals
基金
国家重点研究发展规划项目 ( 2 0 0 0 0 0 672 0 0 )
湖南省自然科学基金资助项目(OOJJY2 0 48)
华中科技大学塑性成形模具技术国家重点实验室开放课题
关键词
钨基高比重合金
粉末注射成形
溶剂脱脂
tungsten heavy alloy
powder injection molding
solvent debinding
