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1. 发明授权

US4232436A Powder metallurgy production of spherical articles, such as bearing elements 失效
标题翻译：粉末冶金生产球形制品，如轴承元件
公开(公告)号：US4232436A
公开(公告)日：1980-11-11
申请号：US892027
申请日：1978-03-31
申请人： William J. Chmura
发明人： William J. Chmura
IPC分类号： B21H1/16 , B22F5/10 , B21H1/14
CPC分类号： F16C23/04 , B21H1/16 , B22F5/10 , F16C33/14 , F16C2220/20 , Y10T29/49664
摘要： Low-cost articles characterized by a surface of revolution, such as truncated spherical balls, e.g., plain spherical bearing balls, are provided made by the powder metal compaction and sintering of blanks followed, in the case of ball elements, by densification of the outer spherical surface by mechanical working, such as by roll-forming, the balls so produced being characterized by improved sphericity and dimensional tolerance and improved wear resistance combined with optimum resistance to corrosion. The spherical surface of the ball is substantially free of pores, has a work hardened structure and has a density at and adjacent the surface of at least about 95% of the theoretical density of the metal, the density substantially below the surface being less and ranging to as low as at least about 70% of theoretical density.
摘要翻译：通过粉末金属压实和坯料烧结提供了以旋转表面为特征的低成本制品，例如截面球形球，例如平面球面轴承球，随后在球形元件的情况下，通过外部的致密化通过机械加工的球面，例如通过辊轧成形，所制造的球的特征在于具有改善的球形度和尺寸公差以及改进的耐磨性以及最佳的抗腐蚀性。球的球形表面基本上没有孔，具有加工硬化结构，并且在表面附近的密度在金属的理论密度的至少约95％之间，密度基本上低于表面的密度越来越小至少至少约70％的理论密度。

2. 发明授权

US4026657A Sintered spherical articles 失效
标题翻译：烧结球形制品
公开(公告)号：US4026657A
公开(公告)日：1977-05-31
申请号：US503279
申请日：1974-09-05
申请人： William J. Chmura
发明人： William J. Chmura
IPC分类号： B22F3/11 , B22F3/24 , B22F5/00 , B22F5/10 , C22F1/00 , F16C23/04 , F16C33/12 , F16C33/14 , B21D53/10 , B21K1/02 , F16C11/06 , F16D1/12
CPC分类号： F16C23/045 , B22F3/1109 , B22F5/10 , F16C33/12 , Y10S29/031 , Y10T29/49661 , Y10T29/49664 , Y10T403/32631 , Y10T403/32771
摘要： Sintered articles characterized by a surface of revolution, such as truncated spherical balls, e.g., plain spherical bearing balls, are provided made by the powder metal compaction and sintering of blanks followed, in the case of ball elements, by densification of the outer spherical surface by mechanical working, such as by roll-forming, the balls so produced being characterized by improved sphericity and dimensional tolerance and improved wear resistance combined with optimum resistance to corrosion. The spherical surface of the ball is substantially free of pores, has a work hardened structure and has a density at and adjacent the surface of at least about 95% of the theoretical density of the metal, the density substantially below the surface being less and ranging to as low as at least about 70% of theoretical density.
摘要翻译：通过粉末金属压实和烧结坯料提供由旋转表面特征的烧结制品，例如截面球形球，例如平面球面轴承球，随后在球形元件的情况下，通过外球面的致密化通过机械加工，例如通过辊轧成型，所制造的球的特征在于具有改善的球形度和尺寸公差以及改进的耐磨性以及最佳的抗腐蚀性。球的球形表面基本上没有孔，具有加工硬化结构，并且在表面附近的密度在金属的理论密度的至少约95％之间，密度基本上低于表面的密度越来越小至少至少约70％的理论密度。

3. 发明授权

US4394421A Thread forming of sintered porous metal shapes 失效
标题翻译：烧结多孔金属形状的螺纹形成
公开(公告)号：US4394421A
公开(公告)日：1983-07-19
申请号：US235641
申请日：1981-02-18
申请人： William J. Chmura , Ronald S. Slusarski
发明人： William J. Chmura , Ronald S. Slusarski
IPC分类号： B21H3/02 , B22F3/18 , B22F5/06 , B21H3/04 , B22F3/24 , B32B5/14
CPC分类号： B22F3/18 , B21H3/02 , B22F5/06 , B22F2998/10 , B22F2999/00 , Y10T428/12021 , Y10T428/12333 , Y10T428/12458
摘要： A method of thread rolling a cylindrical sintered P/M blank is provided comprising, forming a sintered cylindrical powder metal (P/M) blank of density ranging from about 75% to 92% of the actual density of said metal blank having a selected diameter larger than the final pitch diameter of a predetermined roll threaded product produced therefrom and not substantially exceeding the outside diameter of said predetermined roll threaded product. The P/M blank diameter selected is substantially inversely related to the density of the blank, the P/M diameter selected being correlated to produce a substantially full thread. The sintered P/M blank is then thread rolled using a threading die corresponding to the gage of the predetermined roll threaded product to be produced.
摘要翻译：提供一种滚筒式烧结P / M坯料的方法，该方法包括：形成密度为具有所选直径的所述金属坯料的实际密度的约75％至92％的烧结圆柱形粉末金属（P / M）坯料大于由其制造的预定辊螺纹产品的最终节圆直径，并且基本上不超过所述预定的卷螺纹制品的外径。所选择的P / M毛坯直径基本上与坯料的密度成反比，所选择的P / M直径相关，以产生基本上全螺纹。然后使用对应于待生产的预定辊螺纹产品的量规的穿线模具对烧结的P / M坯料进行螺纹轧制。

4. 发明授权

US4118009A Sintered ball valve 失效
标题翻译：烧结球阀
公开(公告)号：US4118009A
公开(公告)日：1978-10-03
申请号：US774024
申请日：1977-03-03
申请人： William J. Chmura
发明人： William J. Chmura
IPC分类号： B22F3/11 , B22F3/24 , B22F5/00 , B22F5/10 , C22F1/00 , F16C23/04 , F16C33/12 , F16C33/14 , B21D53/10 , B21K1/02 , F16C11/06 , F16D1/12
CPC分类号： F16C23/045 , B22F3/1109 , B22F5/10 , F16C33/12 , Y10S29/031 , Y10T29/49661 , Y10T29/49664 , Y10T403/32631 , Y10T403/32771
摘要： Sintered articles characterized by a surface of revolution, such as truncated spherical balls and spherical ball valves, e.g., plain spherical bearing balls, are provided made by the powder metal compaction and sintering of blanks followed, in the case of ball elements, by densification of the outer spherical surface by mechanical working, such as by roll-forming, the balls so produced being characterized by improved sphericity and dimensional tolerance and improved wear resistance combined with optimum resistance to corrosion. The spherical surface of the ball is substantially free of pores, has a work hardened structure and has a density at and adjacent the surface of at least about 95% of the theoretical density of the metal, the density substantially below the surface being less and ranging to as low as at least about 70% of theoretical density.
摘要翻译：通过粉末金属压实和坯料烧结提供了以旋转表面为特征的烧结制品，例如截球体球和球形球阀，例如平球形轴承球，随后在球形元件的情况下通过致密化通过机械加工，例如通过辊轧成形，球形外表面的特征在于球形度和尺寸公差提高，耐磨性改善以及最佳的耐腐蚀性。球的球形表面基本上没有孔，具有加工硬化结构，并且在表面附近的密度在金属的理论密度的至少约95％之间，密度基本上低于表面的密度越来越小至少至少约70％的理论密度。

5. 发明授权

US4059879A Method for the controlled mechanical working of sintered porous powder metal shapes to effect surface and subsurface densification 失效
标题翻译：烧结多孔粉末金属形状受控机械加工的方法，以实现表面和表面下的致密化
公开(公告)号：US4059879A
公开(公告)日：1977-11-29
申请号：US632709
申请日：1975-11-17
申请人： William J. Chmura , Ronald S. Slusarski , Charles B. Burk
发明人： William J. Chmura , Ronald S. Slusarski , Charles B. Burk
IPC分类号： B22F3/24 , B21H1/12 , B21J5/00 , B22F3/11 , B22F5/02 , F16C33/64 , B21K1/04
CPC分类号： B22F3/1109 , B21H1/12 , B22F5/02 , F16C33/64 , B22F2998/00 , F16C19/06 , F16C2220/20 , Y10T29/49689 , Y10T29/53878 , Y10T29/53991
摘要： A method is provided for partially densifying a selected surface portion of a sintered porous powder metal element while applying restraining pressure to other selected portions of said element in order to inhibit growth and cracking of said element during the partial cold deformation thereof. The method is particularly applicable to the production of annular bearing rings.
摘要翻译：提供了一种方法，用于将烧结的多孔粉末金属元素的选定表面部分致密化，同时向所述元件的其它选定部分施加抑制压力，以便在其部分冷变形期间抑制所述元件的生长和开裂。该方法特别适用于生产环形轴承圈。

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