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1. 发明授权

US06250855B1 Coated milling insert 失效
标题翻译：涂层铣刀
公开(公告)号：US06250855B1
公开(公告)日：2001-06-26
申请号：US09534006
申请日：2000-03-24
申请人： Jeanette Persson , Leif Åkesson , Rickard Sundström , Åke Östlund
发明人： Jeanette Persson , Leif Åkesson , Rickard Sundström , Åke Östlund
IPC分类号： B23B2714
CPC分类号： C23C30/005 , B22F2005/001 , C22C29/08 , Y10T407/26 , Y10T407/27 , Y10T428/24975
摘要： A coated cemented carbide cutting tool (indexable inserts) for the wet or dry milling, particularly at high cutting speeds, of stainless steels of different composition and microstructure, but also for the milling of non-stainless steels such as low carbon steels and low and medium alloyed steels is disclosed. The coated WC−Co based cemented carbide insert includes a specific composition range of WC+Co without any addition of cubic carbides by a low W-alloyed Co binder and by a narrow range defined average WC grainsize, and a hard and wear resistant coating including a multilayered structure of sublayers of the composition (TixAl1−x)N with repeated variation of the Ti/Al ratio.
摘要翻译：用于湿磨或干磨（特别是在高切割速度下）不同组成和微观结构的不锈钢的涂覆硬质合金刀具（可转位刀片），也可用于非低碳钢和低碳钢等公开了中等合金钢。涂覆的WC-Co基硬质合金刀片包括WC + Co的特定组成范围，而不通过低W合金Co粘合剂和窄范围限定的平均WC晶粒度加入立方碳化物，以及硬和耐磨涂层，包括具有重复变化的Ti / Al比的组合物（TixAl1-x）N的亚层的多层结构。

2. 发明授权

US06267797B1 Sintering method 失效
标题翻译：烧结方法
公开(公告)号：US06267797B1
公开(公告)日：2001-07-31
申请号：US09214621
申请日：1999-04-01
申请人： Åke Östlund , Leif Åkesson
发明人： Åke Östlund , Leif Åkesson
IPC分类号： C22C105
CPC分类号： C22C29/08 , B22F3/1028 , B22F2201/013 , C22C1/051 , C23C30/005
摘要： There is disclosed a method of sintering cemented carbide bodies including heating said bodies to the sintering temperature in a suitable atmosphere and cooling. If said cooling at least to below 1200° C. is performed in a hydrogen atmosphere of pressure 0.4-0.9 bar cemented carbide bodies with no surface layer of binder phase are obtained. This is an advantage when said bodies are to be coated with wear resistant layers by the use of CVD-, MTCVD- or PVD-technique.
摘要翻译：公开了一种烧结硬质合金体的方法，包括在合适的气氛和冷却下将所述体加热至烧结温度。如果至少在1200℃以下的冷却是在压力为0.4-0.9巴的氢气气氛中进行的，则没有获得粘结相表面层的硬质合金体。当通过使用CVD-，MTCVD或PVD技术将所述物体涂覆耐磨层时，这是有利的。

3. 发明授权

US06468680B1 Cemented carbide insert with binder phase enriched surface zone 有权
标题翻译：具有粘结相富集表面区域的硬质合金刀片
公开(公告)号：US06468680B1
公开(公告)日：2002-10-22
申请号：US09720654
申请日：2001-02-20
申请人： Mats Waldenström , Leif Åkesson
发明人： Mats Waldenström , Leif Åkesson
IPC分类号： C22C2908
CPC分类号： C22C1/051 , B22F2998/00 , B22F2998/10 , B22F2999/00 , C22C29/08 , Y10T428/252 , C23C14/00 , C23C16/00 , B22F1/0014 , B22F1/025 , B22F3/1028 , B22F3/1007 , B22F2201/30 , B22F2207/03
摘要： The present invention relates to a coated cemented carbide insert with a binder phase enriched surface zone. The WC-grains have an average grain size in the range 1.0-3.5 &mgr;m, preferably 1.3-3.0 &mgr;m and the number of WC-grains larger than 2 times the average grain size is less than 10 grains/cm2 measured on a representative polished section 0.5 cm2 large, preferably less than 5 grains/cm2, and the number larger than 3 times the average grain size is less than 5 grains/cm2, preferably less than 3 grains/cm2. The cemented carbide is made by powder metallurgical methods and is in particular characterized in that the cooling rate, CR, from the sintering temperature, ST, exhibits the relationship 10
摘要翻译：本发明涉及具有粘结相富集表面区域的涂覆硬质合金刀片。 WC颗粒的平均晶粒尺寸在1.0-3.5μm，优选1.3-3.0μm的范围内，并且大于平均晶粒尺寸的2倍的WC晶粒数小于10个晶粒/ cm 2，在典型的抛光部分 0.5cm 2大，优选小于5粒/ cm 2，并且平均粒径的3倍以上的数小于5粒/ cm 2，优选小于3粒/ cm 2。硬质合金通过粉末冶金方法制成，其特征在于，烧结温度ST的冷却速率CR表现出10

4. 发明授权

US06360831B1 Borehole opener 有权
标题翻译：钻孔机
公开(公告)号：US06360831B1
公开(公告)日：2002-03-26
申请号：US09521408
申请日：2000-03-08
申请人： Leif Åkesson , Antonio Carosielli
发明人： Leif Åkesson , Antonio Carosielli
IPC分类号： E21B728
CPC分类号： E21B10/62 , E21B10/322
摘要： Borehole opener, particularly for enlarging this hole underneath a casing in the field of oil prospecting, comprising a body (2) of longitudinal axis (3), a duct (4) for drilling fluid, formed longitudinally in the body (2), and at least two hole-opening arms (5) which have an active part (7) equipped with cutting means (8), which are distributed symmetrically in the body (2) about the longitudinal axis (3), and which are arranged therein in such a way that they can be moved between a position of rest (9) in the body (2) and an active position (10) partially out of the body (2); in this hole opener in order to move it from the position of rest (9) to the active position (10), each arm (5) has a face (12), internal to the body (2), designed to be subjected directly, in the same way as an active face of a piston, to the pressure of the drilling fluid flowing through the body (2).
摘要翻译：钻孔开启器，特别是用于在油勘探领域中的壳体下方扩大该孔，包括纵向轴线（3）的主体（2），用于在主体（2）中纵向形成的用于钻探流体的管道（4）;以及至少两个开孔臂（5），其具有配备有切割装置（8）的活动部分（7），所述活动部分（7）围绕纵向轴线（3）对称分布在主体（2）中，并且布置在其中这种方式使得它们可以在主体（2）中的静止位置（9）和部分地从主体（2）之间的活动位置（10）之间移动; 在这个开孔器中，为了将其从静止位置（9）移动到活动位置（10），每个臂（5）具有在主体（2）的内部的面（12），设计成直接承受以与活塞的主动面相同的方式，流过穿过主体（2）的钻井液的压力。

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