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公开(公告)号：US5516483A
公开(公告)日：1996-05-14
申请号：US193578
申请日：1994-02-08
申请人： Rohith Shivanath , Peter Jones , Danny T. D. Thieu
发明人： Rohith Shivanath , Peter Jones , Danny T. D. Thieu
CPC分类号： C22C33/0264 , B22F3/10 , B22F3/1007 , C21D1/32 , C22C33/02 , C22C33/0228 , B22F2998/00 , Y10S75/95
摘要： A process of forming a sintered article for powder metal comprising blending carbon and ferro alloys and lubricant with compressible elemental iron powder, pressing said blended mixture to form sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a high density from a single compression.
摘要翻译： 一种形成用于粉末金属的烧结制品的方法，包括将碳和铁合金和润滑剂与可压缩的元素铁粉混合，压制所述混合物以形成烧结所述制品，然后在还原气氛中高温烧结所述制品以产生烧结制品 具有来自单一压缩的高密度。
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公开(公告)号：US5881354A
公开(公告)日：1999-03-09
申请号：US642679
申请日：1996-05-03
申请人： Rohith Shivanath , Peter Jones
发明人： Rohith Shivanath , Peter Jones
CPC分类号： C22C33/0264 , C21D1/32 , C21D7/00 , C22C33/02 , B22F2003/023 , B22F2003/166 , B22F2003/248 , B22F2998/10 , C21D9/32
摘要： A method of making a sintered article of powder metal having a carbon composition in the range of about 0.8% to 2.0% by weight, then spheroidizing the sintered article and then warm forming the sintered article at a temperature between 250.degree. and 700.degree. C. for a time duration selected to form the article to a final shape.
摘要翻译： 制造碳组成为约0.8〜2.0重量％范围的粉末金属烧结体的方法，然后对烧结体进行球化，然后在250〜700℃的温度下温热形成烧结体。 在选定的时间段内将文章形成最终形状。
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公开(公告)号：US5834640A
公开(公告)日：1998-11-10
申请号：US513512
申请日：1995-08-10
申请人： Rohith Shivanath , Peter Jones
发明人： Rohith Shivanath , Peter Jones
CPC分类号： C22C33/0207 , Y10T428/12014
摘要： This invention relates to a method or process of forming a sintered article of powder metal, and particularly relates to a process of forming a sintered article of powder metal by blending combinations of finely ground ferro alloys (either singly or in combination with other ferro alloys) with elemental iron powder and other additives and then high temperature sintering of the article in a reducing atmosphere to produce sintered parts with oxygen contents less than 250 parts per million (ppm). More particularly the ferro alloys admixed to the base iron have a mean particle size of approximately 8 to 12 microns, having previously been ground to size in an inert atmosphere.
摘要翻译： 本发明涉及一种形成粉末金属烧结体的方法或方法，特别涉及通过将精细研磨的铁合金（单独地或与其它铁合金组合）的组合混合来形成粉末金属烧结体的方法， 用元素铁粉等添加剂，然后在还原气氛中高温烧结制品，生产氧含量低于百万分之250（ppm）的烧结部件。 更具体地，与碱铁混合的铁合金具有约8至12微米的平均粒度，其预先在惰性气氛中研磨成尺寸。
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4.发明授权
公开(公告)号：US5641922A
公开(公告)日：1997-06-24
申请号：US667590
申请日：1996-06-24
CPC分类号： C22C33/02 , C22C33/0207 , B22F2998/00
摘要： This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a density greater than 7.4 g/cc.
摘要翻译： 本发明涉及一种形成粉末金属烧结体的方法，其包括将石墨和润滑剂与预合金铁基粉末混合，将所述混合物压制成在烧结所述制品的单个压实阶段中成形，然后高温烧结所述制品 在还原气氛中制造密度大于7.4g / cc的烧结制品。
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公开(公告)号：US5476632A
公开(公告)日：1995-12-19
申请号：US107846
申请日：1994-01-14
申请人： Rohith Shivanath , Peter Jones
发明人： Rohith Shivanath , Peter Jones
CPC分类号： C22C33/0264 , C22C33/0207 , C22C33/0271
摘要： A process of forming a sintered article of powder metal comprising: selecting elemental iron powder; determining the desired properties of said sintered article and selecting, a quantity of carbon, and ferro alloy from the group of ferro manganese, ferro chromium, ferro molybdenum, ferro vanadium, ferro silicon and ferro boron; grinding said ferro alloy to a mean particle size of approximately 8 to 12 microns; introducing a lubricant while blending the carbon, ferro alloy, with said elemental iron powder; pressing the mixture to form the article; and then high temperature sintering the article at a temperature between 1,250.degree. C. and 1,350.degree. C. in a neutral or reducing atmosphere; so as to produce the sintered article of powdered metal; and includes the product formed thereby.
摘要翻译： PCT No.PCT / CA92 / 00388 Sec。 371日期1994年1月14日 102（e）日期1994年1月14日PCT提交1992年9月9日PCT公布。 公开号WO94 / 05822 日期：1994年3月17日。一种形成粉末金属烧结体的方法，包括：选择元素铁粉末; 确定所述烧结制品的所需性质，并选择一组来自铁锰，铁铬，铁钼，铁钒，铁硅和铁硼的碳和铁合金; 将所述铁合金研磨至约8至12微米的平均粒度; 在将碳，铁合金与所述元素铁粉混合的同时引入润滑剂; 按压混合物形成物品; 然后在中性或还原性气氛中在1250℃至1350℃的温度下高温烧结制品; 以生产粉末状金属的烧结制品; 并且包括由此形成的产品。
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公开(公告)号：US06346213B1
公开(公告)日：2002-02-12
申请号：US09449542
申请日：1999-11-29
申请人： Rohith Shivanath , Karol Kucharski , Peter Jones
发明人： Rohith Shivanath , Karol Kucharski , Peter Jones
IPC分类号： C21D106
CPC分类号： C22C33/0228 , B22F2998/10 , B22F2999/00 , C22C33/02 , B22F3/1017 , B22F3/1028 , B22F2201/02
摘要： A process of forming a sintered article of powder metal comprising blending graphite, Si carbide and lubricant, with pre-alloyed iron base powder; pressing said blended mixture to a shaped article; sintering said article in a reduced atmosphere; forced cooling said sintered article.
摘要翻译： 一种形成粉末金属烧结体的方法，包括将石墨，碳化硅和润滑剂与预合金铁基粉末混合; 将所述混合的混合物压制成成型制品; 在减少的气氛中烧结所述制品; 强制冷却所述烧结制品。
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公开(公告)号：US5656787A
公开(公告)日：1997-08-12
申请号：US561276
申请日：1995-11-21
CPC分类号： C22C33/0264 , B22F3/10 , B22F3/1007 , C21D1/32 , C22C33/02 , C22C33/0228 , B22F2998/00 , Y10S75/95
摘要： A process of forming a sintered article for powder metal comprising blending carbon and ferro alloys and lubricant with compressible elemental iron powder, pressing said blended mixture to form sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a high density from a single compression.
摘要翻译： 一种形成用于粉末金属的烧结制品的方法，包括将碳和铁合金和润滑剂与可压缩的元素铁粉混合，压制所述混合物以形成烧结所述制品，然后在还原气氛中高温烧结所述制品以产生烧结制品 具有来自单一压缩的高密度。
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8.发明授权
公开(公告)号：US5552109A
公开(公告)日：1996-09-03
申请号：US496726
申请日：1995-06-29
申请人： Rohith Shivanath , Peter Jones , Danny T. D. Thieu
发明人： Rohith Shivanath , Peter Jones , Danny T. D. Thieu
CPC分类号： C22C33/02 , C22C33/0207 , B22F2998/00
摘要： This invention relates to a process of forming a sintered article of powder metal comprising blending graphite and lubricant with a pre-alloyed iron based powder, pressing said blended mixture to shape in a single compaction stage sintering said article, and then high temperature sintering said article in a reducing atmosphere to produce a sintered article having a density greater than 7.4 g/cc.
摘要翻译： 本发明涉及一种形成粉末金属烧结体的方法，其包括将石墨和润滑剂与预合金铁基粉末混合，将所述混合物压制成在烧结所述制品的单个压实阶段中成形，然后高温烧结所述制品 在还原气氛中制造密度大于7.4g / cc的烧结制品。
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公开(公告)号：US6019937A
公开(公告)日：2000-02-01
申请号：US200480
申请日：1998-11-27
申请人： Rohith Shivanath , Karol Kucharski , Peter Jones
发明人： Rohith Shivanath , Karol Kucharski , Peter Jones
CPC分类号： C22C33/0228 , C22C33/02 , B22F2998/10 , B22F2999/00
摘要： A process of forming a sintered article of powder metal comprising blending graphite, Si carbide and lubricant, with pre-alloyed iron base powder; pressing said blended mixture to a shaped article; sintering said article in a reduced atmosphere; forced cooling said sintered article.
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公开(公告)号：US5884527A
公开(公告)日：1999-03-23
申请号：US923396
申请日：1997-09-04
CPC分类号： C21D7/04 , B21H5/022 , B22F3/1109 , B22F5/08 , C21D9/32 , B22F2003/166 , B22F2998/00 , B22F2998/10 , B22F2999/00 , Y10T29/49471 , Y10T29/49478 , Y10T29/4948 , Y10T74/1987 , Y10T74/19963
摘要： A gear wheel is formed from a pressed and sintered powder metal blank in which the metal powder comprises an admixture of iron powder and at least one alloying addition and the gear wheel is surface hardened by applying densifying pressure only to the tooth root regions or only to the tooth flank regions in order to establish densification in the range of 90 to 100 per cent of full theoretical density to a depth of at least 380 and up to about 1,000 microns.
摘要翻译： 齿轮由压制和烧结的粉末金属坯料形成，其中金属粉末包含铁粉和至少一种合金添加剂的混合物，并且齿轮通过仅向牙根区域施加致密压力而仅表面硬化 齿面区域，以便在全理论密度的90至100％的范围内建立至少380和高达约1,000微米的深度的致密化。
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