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公开(公告)号:US08980215B2
公开(公告)日:2015-03-17
申请号:US13509621
申请日:2009-12-30
申请人: Baiwan Wei , Zhao Lin , Zhifeng Li , Anshi Zou , Yi Wu
发明人: Baiwan Wei , Zhao Lin , Zhifeng Li , Anshi Zou , Yi Wu
CPC分类号: C01B31/34 , C01B32/949
摘要: A method for preparing ultrafine powder of tungsten carbide using ultrafine tungsten powder and carbon black as raw materials is provided. The following steps are included: (1) passivation of the ultrafine tungsten powder: passivating the ultrafine tungsten powder under pure carbon dioxide; (2) carbon addition: mixing the ultrafine tungsten powder with carbon black powder after applying cooling water and inert gases; (3) carbonization: synthesizing the bulk tungsten carbide powder at high temperature in a carbonizing stove; (4) crushing and sieving: crushing the bulk tungsten carbide powder, cooling and sieving to obtain the ultrafine powder of tungsten carbide.
摘要翻译: 提供了一种使用超细钨粉和炭黑作为原料制备碳化钨超细粉末的方法。 包括以下步骤:(1)超细钨粉钝化:在纯二氧化碳下钝化超细钨粉; (2)碳添加:使用冷却水和惰性气体后,将超细钨粉与炭黑粉末混合; (3)碳化:在碳化炉中高温合成本体碳化钨粉末; (4)破碎筛分:粉碎散装碳化钨粉末,冷却筛分得到超细碳化钨粉末。
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公开(公告)号:US20130004407A1
公开(公告)日:2013-01-03
申请号:US13509621
申请日:2009-12-30
申请人: Baiwan Wei , Zhao Lin , Zhifeng Li , Anshi Zou , Yi Wu
发明人: Baiwan Wei , Zhao Lin , Zhifeng Li , Anshi Zou , Yi Wu
IPC分类号: C01B31/34
CPC分类号: C01B31/34 , C01B32/949
摘要: A method for preparing ultrafine powder of tungsten carbide using ultrafine tungsten powder and carbon black as raw materials is provided. The following steps are included: (1) passivation of the ultrafine tungsten powder: passivating the ultrafine tungsten powder under pure carbon dioxide; (2) carbon addition: mixing the ultrafine tungsten powder with carbon black powder after applying cooling water and inert gases; (3) carbonization: synthesizing the bulk tungsten carbide powder at high temperature in a carbonizing stove; (4) crushing and sieving: crushing the bulk tungsten carbide powder, cooling and sieving to obtain the ultrafine powder of tungsten carbide.
摘要翻译: 提供了一种使用超细钨粉和炭黑作为原料制备碳化钨超细粉末的方法。 包括以下步骤:(1)超细钨粉钝化:在纯二氧化碳下钝化超细钨粉; (2)碳添加:使用冷却水和惰性气体后,将超细钨粉与炭黑粉末混合; (3)碳化:在碳化炉中高温合成本体碳化钨粉末; (4)破碎筛分:粉碎散装碳化钨粉末,冷却筛分得到超细碳化钨粉末。
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