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YG8硬质合金注射成形脱脂工艺的研究 被引量:5

Study on Debinding Process of Cemented Carbide Green Part byPowder Injection Molding
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摘要 采用传统蜡基和(油+蜡)基改进型两种粘结剂,对粒度为1.97μm的WC-8Co混合粉末注射成形,研究了两种喂料的热脱脂、溶剂脱脂+热脱脂工艺,确定了热脱脂、溶剂脱脂+热脱脂的优化工艺路线。从脱脂速度和脱脂时间、脱脂缺陷和脱脂工艺控制的难易程度等方面比较了两种粘结剂的热脱脂和溶剂脱脂效果。研究了热脱脂温度、时间、不同脱脂方式以及粘结剂组成对脱脂坯碳含量的影响。结果表明,以氢气为脱脂气氛,在450℃以下进行热脱脂可以将有机聚合物完全脱除而且不产生脱碳,溶剂脱脂后再进行热脱脂更有利于控碳和减少脱脂缺陷,而且大大缩短脱脂时间。(油+蜡)基改进型粘结剂在热脱脂和溶剂脱脂时具有更好的脱脂特性。 By using a traditional paraffin wax base multi-component binder and a kind of (wax+oil) improved binder, the WC-8Co powder mixture with particle size of 1.97μm has been injected by powder injection molding. The thermal debinding process and solvent +thermal debinding combined process have been studied to determine the optimal debinding processes. The efficiency of the two binders on thermal debinding and solvent debinding has been compared from debinding rate, defects of the brown parts and debinding process. The influences of thermal debinding temperature, time, different debinding methods and binder component on the carbon content of the brown parts have also been studied. The results have shown, when the green part is thermally debinded below 450℃ under H2 atmosphere,the polymer binder in the green part can be removed completely without carbon loss in WC powder. Solvent debinding before thermal debinding has advantage in controlling carbon content of the brown part and defects, and the debinding time is shortened greatly. The (wax+oil) improved binder has better debinding characteristics during thermal debinding and solvent debinding.
出处 《中国钨业》 CAS 2004年第5期75-80,87,共7页 China Tungsten Industry
基金 国家"八六三"项目资助(2002AA331090)
关键词 热脱脂 溶剂脱脂 注射成形 粘结剂 硬质合金 碳含量 脱碳 混合粉末 WC 缺陷 cemented carbide powder injection molding thermal debinding solvent debinding
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  • 1李益民,黄伯云,曲选辉,梁叔全,邱光汉.金属注射成形技术进展[J].稀有金属材料与工程,1996,25(1):1-4. 被引量:52
  • 2曲选辉,颜寒松,黄伯云.金属粉末注射成形粘结剂的发展[J].粉末冶金技术,1997,15(1):61-65. 被引量:45
  • 3姚学祥.硬质合金螺旋立铣刀刃条的注射成形技术研究[J].稀有金属与硬质合金,1994,(119):4-5.
  • 4B.沃而默特 黄家贤(译).高分子化学基础[M].化学工业出版社,1989,3..
  • 5M.佛罗因德 翻译组(译).石蜡产品的性质、生产与应用[M].烃加工出版社,1998,6..
  • 6H.贝内特 大连石油学院特炼系(译).工业用蜡[M].石油工业出版社,1982,10..
  • 7Fan J L,Trans Nonferr Metal Soc China,2000年,10卷,1期,57页
  • 8Fan Jinglian,Trans Nonferr Met Soc China,1999年,9卷,1期,93页
  • 9Hwang K S,Metal Mater Trans.A,1996年,27卷,2期,245页
  • 10Lin S T,Int Powder Metallurgy,1989年,25卷,1期,19页

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