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公开(公告)号：US11752550B2
公开(公告)日：2023-09-12
申请号：US16244406
申请日：2019-01-10
CPC分类号： B22F3/24 , B22F3/14 , B22F3/16 , B22F3/162 , C22C1/0416 , B22F2003/166 , B22F2003/247 , B22F2003/248 , B22F2201/50 , B22F2301/052 , B22F2303/15 , B22F2998/10 , C22C21/00 , C22F1/04 , B22F2998/10 , B22F3/02 , B22F3/10 , B22F2003/247 , B22F2003/248
摘要： A method of manufacturing a sized powder metal component having improved fatigue strength. The method includes the sequential steps of solutionizing a sintered powder metal component and quenching the sintered powder metal component, sizing the sintered powder metal component to form a sized powder metal component, re-solutionizing the sized powder metal component, and ageing the sized powder metal component. The sized powder metal component made by this method, in which the component is re-solutionized between sizing before ageing, can exhibit exceptional improvements in fatigue strength compared to components prepared similarly but that are not re-solutionized.
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公开(公告)号：US20220213584A1
公开(公告)日：2022-07-07
申请号：US17602605
申请日：2020-03-26
摘要： A method of carburizing a powder metal part involving more than one carburizing step. In a pre-forging carburizing step, a powder metal part that is less than fully dense is carburized to establish a pre-forging carburization profile. After the pre-forging carburizing step, the powder metal part is forged so that the powder metal part is increased in density and the pre-forging carburization profile is transformed into an as-forged carburization profile. In a post-forging carburizing step following the forging step, the powder metal part is again carburized, thereby resulting in both further diffusion of carbon from the as-forged carburization profile into the powder metal part and further introduction of carbon into the powder metal part at a surface of the powder metal part.
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公开(公告)号：US10888928B2
公开(公告)日：2021-01-12
申请号：US15543874
申请日：2016-01-12
发明人： Alan C. Taylor
摘要： A method of sinter fitting a powder metal compact around a core forms a composite component. By exploiting the shrinkage associated with the sintering of a powder metal compact, a sintered powder metal section may be dimensionally shrunk onto a core to create a mechanical interference fit between a core section and a sintered powder metal section. This method may be used to join materials such as aluminum and steel together, which traditionally have been difficult to join to one another.
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公开(公告)号：US20190118255A1
公开(公告)日：2019-04-25
申请号：US16227935
申请日：2018-12-20
摘要： A transition element-doped aluminum powder metal and a method of making this powder metal are disclosed. The method of making includes forming an aluminum-transition element melt in which a transition element content of the aluminum-transition element melt is less than 6 percent by weight. The aluminum-transition element melt is then powderized to form a transition element-doped aluminum powder metal. The powderization may occur by, for example, air atomization.
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公开(公告)号：US10151382B2
公开(公告)日：2018-12-11
申请号：US15024975
申请日：2014-09-17
发明人： Jeffrey W. Lemke
摘要： An improved planetary gear carrier assembly is disclosed including a carrier and a ring. The carrier has a hub extending in an axial direction. The hub has splines on a radially-outward facing surface that extend in an axial direction and further has a first set of groove sections on the radially-outward facing surface in which the first set of groove sections extends circumferentially around the hub and through the splines. The ring is received around the hub of the carrier and has splines on a radially-inward facing surface. The splines in the ring are received in the first set of groove sections by axially nesting the splines of the carrier and ring into one another and then angularly rotating the ring relative to the carrier. With the splines of the ring twisted in the groove sections of the carrier, the ring can be axially restricted relative to the carrier.
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公开(公告)号：US20160131192A1
公开(公告)日：2016-05-12
申请号：US15001522
申请日：2016-01-20
发明人： Gary R. Draxler , Joel H. Mandel
CPC分类号： F16C35/02 , F16C9/02 , F16C9/04 , F16C41/008 , F16C43/02
摘要： A bearing cap in which each foot includes a protrusion formed thereon that is generally linear having opposing sides in which each of these opposing sides support a plurality of crush ribs.
摘要翻译： 一种轴承盖，其中每个脚都包括形成在其上的突起，该凸起大致线性地具有相对的侧面，在这些侧中每个相对的侧面支撑多个挤压肋。
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公开(公告)号：US10900552B2
公开(公告)日：2021-01-26
申请号：US15839066
申请日：2017-12-12
发明人： Timothy E. Geiman
摘要： A forged composite inner race for a constant velocity joint is forged from a composite preform compact including a first powder metal material and a second powder metal material. The forged composite inner race includes a plurality of ball tracks formed on an outer section of the forged composite inner race with corresponding lands between adjacent ball tracks and an axially-extending splined opening formed in an inner section of the forged composite inner race. The outer section comprises the first powder metal material in a higher concentration than the second powder metal material and the inner section comprises the second powder metal material in a higher concentration than the first powder metal material.
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公开(公告)号：US10859117B2
公开(公告)日：2020-12-08
申请号：US16490346
申请日：2018-03-07
发明人： Gary R. Draxler , Joel H. Mandel
摘要： A powder metal bearing support insert for casting into an engine component includes a pair of holes formed by interdigitated slots during a powder metal compaction process. Since they are formed by interdigitated slots, this pair of holes may receive the cast material therein during the casting step. Among other things, the cast material in these holes may be drilled or machined using tools graded to work the material of the casting in contrast to the material of the insert.
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公开(公告)号：US10773308B2
公开(公告)日：2020-09-15
申请号：US16475881
申请日：2017-12-22
发明人： Douglas R. O'Hara , James T. Hill
摘要： A rotor for a variable valve timing engine is disclosed in which the opposing planar surface(s) of the rotor have one or more recesses formed therein in order to balance, equilibrate, or equalize the planar surface areas on the opposing surfaces. Among other things, this can improve the accuracy and efficiency with which the rotor is ground during a related method of manufacturing the rotor.
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公开(公告)号：US10596631B2
公开(公告)日：2020-03-24
申请号：US15562550
申请日：2016-03-31
发明人： Alan C. Taylor , Ian W. Donaldson
摘要： A method includes the sequential steps of compacting a powder metal in a tool and die set using a compaction press to form a powder metal compact, ejecting the powder metal compact from the tool and die set, positioning the powder metal compact relative to another part, and cooling the powder metal compact. When the powder metal is compacted, a temperature of the powder metal used to form the powder metal compact increases relative to ambient temperature due to deformation of the powder metal during compacting. After ejection and while the powder metal compact is still above ambient temperature, the compact is positioned relative to the other part. Then, upon the cooling of the powder metal compact, the powder metal compact dimensionally shrinks to form an interference fit between the powder metal compact and the other part thereby forming the composite component, which may be subsequently sintered.
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