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公开(公告)号：US07261759B2
公开(公告)日：2007-08-28
申请号：US10758031
申请日：2004-01-14
CPC分类号： B22F1/0059 , A61L27/16 , B29C43/003 , B29C2035/085 , B29K2023/0683 , B29K2105/253 , B29K2303/06 , B29K2403/00 , B29K2995/005 , B29K2995/0087 , B29L2031/7532 , C08B1/00 , C08H8/00 , C08J3/28 , C08J2303/00 , C08L3/02 , C08L23/06 , C08L91/06 , C08L97/02 , C08L2205/16 , C10M105/22 , C10M105/68 , C10M107/10 , C10M107/36 , C10M111/04 , C10M159/005 , C10M159/02 , C10M171/00 , C10M171/06 , C10M2205/14 , C10M2207/10 , C10M2209/123 , C10M2215/08 , D01G1/04 , C08L2666/02 , C08L2666/26
摘要： A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with a modified lubricant. A lubricant conventionally used to compact and sinter a chosen powder metal mixture is modified by adding to it starch particles smaller than the average metal particle, and optionally, micronized cellulose fibers in so small an amount that the modified lubricant is present in an amount less than 2% by weight of the mixture. The Hall apparent density and the Hall flow rate of a powder metal mixture made with the modified lubricant of starch or (starch+fibers) remains within the ranges deemed desirable for production of compacted powder metal parts. Using the modified lubricant in lieu of the conventional lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
摘要翻译： 粉末金属混合物包括常规用于与改性润滑剂组合制备粉末金属部件的润滑剂粉末。 常规用于压制和烧结所选择的粉末金属混合物的润滑剂通过向其中加入小于平均金属颗粒的淀粉颗粒和任选的微粉化纤维素纤维来改性，其中改性润滑剂的存在量小于 2重量％的混合物。 使用淀粉或（淀粉+纤维）的改性润滑剂制成的粉末金属混合物的霍尔表观密度和霍尔流速保持在生产压实的粉末金属部件所需的范围内。 使用改性润滑剂代替常规润滑剂增加通过压实混合物制成的部件的生坯强度，并提高尺寸一致性。
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公开(公告)号：US07150775B2
公开(公告)日：2006-12-19
申请号：US10758032
申请日：2004-01-14
CPC分类号： A61L27/16 , B22F1/0059 , B29C43/003 , B29C2035/085 , B29K2003/00 , B29K2023/0683 , B29K2105/253 , B29K2303/06 , B29K2995/005 , B29K2995/0087 , B29L2031/7532 , C08B1/00 , C08H8/00 , C08L91/06 , C08L97/02 , C08L2205/16 , C10M145/40 , C10M159/005 , C10M159/02 , C10M2201/05 , C10M2205/02 , C10M2207/1256 , C10M2209/12 , C10M2215/08 , C10N2220/082 , C10N2220/086 , C10N2240/40 , C10N2250/08 , D01G1/04 , C08L23/06 , C08L2666/26
摘要： A powder metal mixture comprises a lubricant powder conventionally used to produce powder metal parts in combination with micronized cellulose fibers in an amount less than 2% by weight of the mixture. The addition of fibers with the lubricant increases green strength of a part made by compacting the mixture and improves dimensional conformance.
摘要翻译： 粉末金属混合物包含常规用于制备粉末金属部分与微粉化纤维素纤维组合的润滑剂粉末，其量小于混合物的2重量％。 用润滑剂添加纤维增加了通过压实混合物制成的部件的生坯强度，并提高尺寸一致性。
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