公开(公告)号：US06764554B2

公开(公告)日：2004-07-20

申请号：US10221253

申请日：2002-09-10

申请人： Jan-Åke Gavén

发明人： Jan-Åke Gavén

IPC分类号： C22C3836

CPC分类号： C22C38/24 ,  B02C7/12 ,  C22C38/22 ,  C22C38/36 ,  C22C38/44 ,  C22C38/46 ,  C22C38/56 ,  D21D1/306

摘要： Refining elements for refining discs for disc refiners for the manufacture of mechanical pulp are disclosed, having improved wear resistance by utilizing alloys with precipitated carbides. An improved service life is obtained with a refining disk having the following analysis in % by weight: 2.96 C, 0.77 Si, 0.82 Mn, 24.2 Cr, 5.16 v, 0.04 Ni, 0.03 Mo, and the reminder Fe and impurities. After casting, the refining segments are hardened and annealed and assume a hardness of 57-63 HRC.

摘要翻译： 公开了用于制造机械纸浆的盘式精磨机的精炼盘的精炼元件，其通过利用具有沉淀碳化物的合金具有改善的耐磨性。 通过具有如下分子量的精制盘得到改善的使用寿命：2.96℃，0.77Si，0.82Mn，24.2Cr，5.16v，0.04Ni，0.03Mo，并提醒Fe和杂质。 铸造后，精炼段被硬化和退火，并具有5​​7-63 HRC的硬度。

公开(公告)号：US06187259B1

公开(公告)日：2001-02-13

申请号：US08793368

申请日：1997-03-19

申请人： Osamu Yamashita ,  Yoshihisa Kishimoto ,  Wataru Takahashi ,  Nobushige Hiraishi ,  Yoshiyuki Hashimasa ,  Masakazu Ohkita

发明人： Osamu Yamashita ,  Yoshihisa Kishimoto ,  Wataru Takahashi ,  Nobushige Hiraishi ,  Yoshiyuki Hashimasa ,  Masakazu Ohkita

IPC分类号： C22C3836

CPC分类号： H01F1/0557 ,  H01F1/0577 ,  H01F41/0273

摘要： The object of the present invention is to provide rare-earth system sintered magnets such as R—Fe—B system or R—Co system having excellent magnetic properties, unique configuration of a small size, thin wall thickness and intricate geometry. With the method for preparing the present invention, a granulation of alloy powders can be achieved easily, a chemical reaction between rare-earth system and binder substances can be suppressed, so that the residual oxygen and carbon levels in the sintered products can be reduced. Moreover, by this production method, the flowability and lubricant capability during the forming process can be improved. The dimension accuracy and productivity are also enhanced. A certain type of binder is added to rare-earth alloy powders and kneaded into a slurry state. The slurry is then formed into granulated powders by spray-dryer equipment. The thus granulated powders are molded, and sintered through a powder metallurgy technique.

摘要翻译： 本发明的目的是提供具有优异的磁特性的R-Fe-B系或R-Co系稀土系烧结磁体，其尺寸小，壁厚小，复杂几何形状独特。 通过制备本发明的方法，可以容易地实现合金粉末的造粒，可以抑制稀土系和粘合剂物质之间的化学反应，从而可以降低烧结产品中的残留氧和碳含量。 此外，通过该制造方法，可以提高成形时的流动性和润滑性。 尺寸精度和生产率也得到提高。 将一定类型的粘合剂加入到稀土合金粉末中并捏合成淤浆状态。 然后通过喷雾干燥器设备将浆料形成成粒状粉末。 将如此制粒的粉末成型，并通过粉末冶金技术进行烧结。