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公开(公告)号：US20080224344A1
公开(公告)日：2008-09-18
申请号：US12073934
申请日：2008-03-12
Applicant: Kenneth Westergren , Marian Mikus , Leif Akesson
Inventor： Kenneth Westergren , Marian Mikus , Leif Akesson
CPC classification number: C23C30/005 , B22F3/1035 , B22F2998/00 , C22C29/02 , C22C29/08
Abstract: The present invention relates to a method of making a cemented carbide body.The body is made using conventional powder metallurgical methods such as milling, pressing and sintering. According to the invention, a combined sintering process is used comprising at least a sequence where the batch of bodies in the sintering furnace is heated to a sintering temperature at least above the melting point of the binder phase. The batch of bodies in the sintering furnace is then allowed to cool down to a temperature at least below the melting point of the binder phase and kept there for at least from about 1 but preferably less than about 30 minutes and then heated up again to a sintering temperature at least above the binder phase melting point.The present invention also relates to a cemented carbide body made according to the method.
Abstract translation: 本发明涉及一种制造硬质合金体的方法。 机身采用传统的粉末冶金方法，如铣削，压制和烧结。 根据本发明，使用组合烧结方法，其至少包括将烧结炉中的一批物体加热至至少高于粘结相的熔点的烧结温度的顺序。 然后将烧结炉中的一批物体冷却至至少低于粘结相熔点的温度，并保持至少约1℃，优选小于约30分钟，然后再次加热至 烧结温度至少高于粘结相熔点。 本发明还涉及根据该方法制造的硬质合金体。
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公开(公告)号：US20070292672A1
公开(公告)日：2007-12-20
申请号：US11802570
申请日：2007-05-23
Applicant: Bjorn Ljungberg , Leif Akesson , Ibrahim Sadik
Inventor： Bjorn Ljungberg , Leif Akesson , Ibrahim Sadik
CPC classification number: C23C30/005 , B22F2005/001 , C22C29/08 , C23C16/0254 , C23C16/0281 , C23C16/30 , C23C16/36 , C23C16/56 , C23C28/042 , C23C28/044 , Y10T428/24975
Abstract: Coated cemented carbide milling inserts, particularly useful for rough and semifinishing milling of grey cast iron, highly alloyed grey cast iron, compacted graphite iron (CGI) with or without cast skin under dry conditions are described.The inserts are characterised by a WC-Co cemented carbide with a low content of cubic carbides and a W-alloyed binder phase and a coating including an inner layer of TiCxNy with columnar grains followed by a wet blasted layer of α-Al2O3.on the rake face and colored top layer on the clearance side.The invention also relates to methods of making and using cutting tool inserts according to the above.
Abstract translation: 描述了涂覆硬质合金铣削刀片，特别适用于在干燥条件下有或没有铸造皮肤的灰铸铁，高合金灰铸铁，压实石墨铁（CGI）的粗加工和半加工铣削。 镶嵌件的特征在于具有低立方碳化物含量的WC-Co硬质合金和W-合金粘合剂相以及包含TiC的内层的涂层 >柱状颗粒，然后在前刀面上的α-Al 2 O 3 3的湿喷砂层和间隙侧上的着色顶层。 本发明还涉及制造和使用如上所述的切削工具刀片的方法。
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公开(公告)号：US5549980A
公开(公告)日：1996-08-27
申请号：US258598
申请日：1994-06-10
Applicant: Ake Ostlund , Ulf Oscarsson , Per Gustafson , Leif Akesson
Inventor： Ake Ostlund , Ulf Oscarsson , Per Gustafson , Leif Akesson
CPC classification number: C22C1/051 , C22C29/08 , B22F2998/00 , B22F2999/00 , Y10T428/26
Abstract: A cemented carbide insert with improved toughness and resistance against plastic deformation containing WC and cubic phases of carbide and/or carbonitride in a binder phase based on Co and/or Ni with a binder phase enriched surface zone is disclosed. The binder phase content in the insert is 3.5-12 weight-%. In a zone below the binder phase enriched surface zone, the binder phase content is 0.85-1 of the binder phase content in the inner portion of the insert and the content of cubic phases is essentially constant and equal to the content in the inner portion of the insert.
Abstract translation: 公开了一种硬质合金刀片，其具有改进的韧性和抗塑性变形性，其包含基于具有粘结相富集表面区域的Co和/或Ni的粘结相中的WC和立方相的碳化物和/或碳氮化物相。 插入物中的粘结相含量为3.5-12重量％。 在粘结相富集表面区域以下的区域中，粘合剂相含量为插入物内部部分中粘结相含量的0.85-1，立方相的含量基本上恒定，等于其内部含量 插入。
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公开(公告)号：US20080210064A1
公开(公告)日：2008-09-04
申请号：US11711856
申请日：2007-02-28
Applicant: Marian Mikus , Kenneth Westergren , Leif Akesson , Per Martensson
Inventor： Marian Mikus , Kenneth Westergren , Leif Akesson , Per Martensson
CPC classification number: C23C30/005 , C23C28/042 , C23C28/044 , C23C28/42 , Y10T82/10 , Y10T407/27 , Y10T428/24975 , Y10T428/252 , Y10T428/265
Abstract: A cutting tool insert has a cermet body with a Co and/or Ni binder phase and a coating deposited as monolayer or as multiple and/or alternating layers of carbide, nitride or oxide. The coating has a thickness of 21-50 μm, when the inserts have a flat rake face, without or with simple chipbreakers and a Co binder phase, or has a thickness of 10-50 μm, when the inserts have a rake face land with a width of 100-300 μm with an angle of 10-25° to the rake face and a Co and/or Ni binder phase. The cermet body has more than 50 vol. % Ti-based carbonitride and less than 15 wt % and more than 6 wt % Co and/or Ni binder phase and a hardness of >1650 HV3. The disclosure also relates to the use of the coated cutting tool insert for the machining of cast iron work pieces.
Abstract translation: 切削刀具刀片具有金属陶瓷体，其具有Co和/或Ni粘结相以及作为单层沉积的涂层或作为碳化物，氮化物或氧化物的多个和/或交替层的涂层。 涂层具有21-50μm的厚度，当插入件具有平坦的前刀面时，没有或具有简单的破碎机和Co粘合剂相，或者具有10-50μm的厚度，当刀片具有耙面时， 宽度为100-300μm，与前刀面的角度为10-25°，Co和/或Ni粘结相。 金属陶瓷体有50多卷。 ％Ti型碳氮化物和小于15重量％且大于6重量％的Co和/或Ni粘结相和硬度> 1650 HV3。 本公开还涉及使用涂覆的切削工具刀片来加工铸铁工件。
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公开(公告)号：US20070148497A1
公开(公告)日：2007-06-28
申请号：US11635782
申请日：2006-12-08
Applicant: Rickard Sundstrom , Susanne Norgren , Marie Pettersson , Leif Akesson , Bjorn Ljungberg
Inventor： Rickard Sundstrom , Susanne Norgren , Marie Pettersson , Leif Akesson , Bjorn Ljungberg
CPC classification number: C23C16/403 , C23C16/30 , C23C16/34 , C23C28/042 , C23C28/044 , C23C30/005 , Y10T407/27 , Y10T428/24975 , Y10T428/252 , Y10T428/265
Abstract: The present invention discloses a coated cutting tool insert particularly useful for dry and wet machining, preferably milling, in low and medium alloyed steels, stainless steels, with or without raw surface zones under severe conditions such as vibrations, long overhang and recutting of chips. The insert is characterized by WC—Co cemented carbide with a W and Cr alloyed Co-binder phase and a coating including at least three TiCxNyOz layers and a top layer at least on the rake face of a smooth α-Al2O3.
Abstract translation: 本发明公开了一种特别适用于低温和中等合金钢不锈钢的干式和湿式机械加工，特别适用于在诸如振动，长突出和重新切屑等严酷条件下具有或不具有原始表面区域的不锈钢的干式和湿式加工。 该嵌件的特征在于具有W和Cr合金Co粘合剂相的WC-Co硬质合金，以及包括至少三个TiC x N y O y O z的涂层 至少在光滑的α-Al 2 O 3 3的前刀面上形成顶层。
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Patent Agency Ranking
公开(公告)号：US5451469A
公开(公告)日：1995-09-19
申请号：US159257
申请日：1993-11-30
Applicant: Per Gustafson , Leif Akesson , Ake Ostlund
Inventor： Per Gustafson , Leif Akesson , Ake Ostlund
CPC classification number: C22C1/051 , C22C29/08 , B22F2998/00 , Y10T428/12021 , Y10T428/12028 , Y10T428/12056
Abstract: There is disclosed a new process for binder phase enrichment. The process combines binder phase enrichment by dissolution of cubic phase with the requirements that cause formation of stratified layers, resulting in a unique structure. The new structure is characterized by, in comparison with the ones previously known, deeper stratified layers and less maximum binder phase enrichment. The possibility of combining dissolution of the cubic phase with formation of stratified layers offers new possibilities to optimize the properties of tungsten carbide based cemented carbides for cutting tools.The new process offers possibilities to combine the two types of gradients. The dissolution of cubic phase moves the zone with maximum amount of stratified binder phase from the surface to a zone close to and below the dissolution front. By controlling the depth of dissolution, the interstitial balance and the cooling rate, a cemented carbide with a unique combination of toughness and plastic deformation resistance can be achieved.
Abstract translation: 公开了用于粘结相富集的新方法。 该方法通过立方相的溶解与引起层状层形成的要求结合粘结相富集，产生独特的结构。 与以前已知的相比，新结构的特征在于更深的分层和更少的最大粘结相富集。 将立方相的溶解与分层的形成相结合的可能性为优化用于切削工具的碳化钨基硬质合金的性能提供了新的可能性。 新工艺提供了组合两种梯度的可能性。 立方相的溶解将最大量的分层粘合剂相的区域从表面移动到溶解前沿附近和之下的区域。 通过控制溶解深度，间隙平衡和冷却速度，可以实现具有韧性和塑性变形抗力的独特组合的硬质合金。
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7.发明申请公开(公告)号：US20080166192A1
公开(公告)日：2008-07-10
申请号：US12003372
申请日：2007-12-21
Applicant: Leif Akesson , Kenneth Westergren
Inventor： Leif Akesson , Kenneth Westergren
CPC classification number: C22C29/08 , B22F2005/001 , B22F2998/00 , B22F2999/00 , C23C28/042 , C23C28/044 , C23C30/005 , Y10T407/27 , Y10T428/12576 , Y10T428/24975 , Y10T428/252 , Y10T428/265 , B22F2207/03 , B22F2303/05 , B22F2302/10 , B22F2302/15
Abstract: The present invention relates to coated cutting tool inserts particularly useful for heavy roughing turning operations of very large steel components, such as drive shafts for ships and shafts for wind power plants. The inserts are large with an iC, inscribed circle diameter, of greater than or equal to about 19 mm and a thickness of greater than or equal to about 6 mm with a composition of from about 5 to about 10 wt-% Co, from about 5 to about 12 wt-% cubic carbides or carbonitrides of the metals Ti, Ta and/or Nb, and balance WC with a stratified binder phase enriched surface zone from about 15 to about 40 μm thick. The inserts have an edge rounding before coating of 35-95 μm. The coating comprises a first, innermost layer of TiCxNyOz and a total thickness from about 0.1 to about 1.5 μm, a second layer of TiCxNy with a thickness of from about 4.5 to about 9.5 μm with columnar grains, a third layer of TiCxNyOz with a thickness of from about 0.3 to about 1.5 μm, a fourth layer of a smooth α-Al2O3 with a thickness of from about 4.5 to about 9.5 μm and, a from about 0.1 to about 2 μm thick colored top layer, preferably TiN or ZrN, on the clearance sides. The invention also relates to the method of making such inserts and the use thereof for heavy roughing turning operations of very large steel components.
Abstract translation: 本发明涉及对于非常大的钢部件（例如用于船舶的驱动轴和用于风力发电厂的轴）的重型粗加工车削操作特别有用的涂覆切削刀具插入件。 插入件大，iC，内径圆直径大于或等于约19mm，厚度大于或等于约6mm，组成为约5至约10重量％Co，约为约 金属Ti，Ta和/或Nb的5至约12重量％的立方碳化物或碳氮化物，以及具有约15至约40μm厚的层状粘结相富集表面区域的平衡WC。 在35-95μm的涂层之前，刀片具有四边形的边缘。 涂层包括第一最内层的TiC x N y O z O z z，总厚度为约0.1至约1.5μm，第二层 层厚度为约4.5至约9.5μm的TiC x N N y Y层与柱状晶粒，第三层TiC x N N， 具有约0.3至约1.5μm的厚度的第三层平滑的α-Al 2 O 3 在间隙侧具有约4.5至约9.5μm厚度的厚度和约0.1至约2μm厚的着色顶层，优选为TiN或ZrN。 本发明还涉及制造这种刀片的方法及其用于非常大的钢部件的粗加工车削操作的用途。
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公开(公告)号：US20080070046A1
公开(公告)日：2008-03-20
申请号：US11240635
申请日：2005-10-03
Applicant: Kenneth Westergren , Marian Mikus , Leif Akesson
Inventor： Kenneth Westergren , Marian Mikus , Leif Akesson
CPC classification number: B23B27/148 , B23B2222/14 , B23B2224/04 , B23B2224/32 , B23B2224/36 , B23B2228/04 , B23B2228/105 , C23C30/005 , Y10T82/10 , Y10T428/24975 , Y10T428/265 , Y10T428/31678
Abstract: The present invention relates to a method of machining a metal workpiece with a coated cutting tool insert comprising a cemented carbide body and a coating deposited as monolayer(s) or as multiple and/or alternating layers. The coating has a total thickness of 25-75 μm and the machining is performed at a cutting speed of >600 m/min, preferably 800-1500 m/min. The invention also relates to a coated cutting tool useful for such machining operation.
Abstract translation: 本发明涉及一种用涂覆的切削工具刀片加工金属工件的方法，所述刀片包括硬质合金本体和作为单层沉积的涂层或多层和/或交替层。 该涂层的总厚度为25-75μm，并以600m / min，优选为800-1500m / min的切割速度进行加工。 本发明还涉及一种用于这种加工操作的涂层切割工具。
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公开(公告)号：US20070292671A1
公开(公告)日：2007-12-20
申请号：US11802569
申请日：2007-05-23
Applicant: Leif Akesson , Toril Myrtveit , Ibrahim Sadik
Inventor： Leif Akesson , Toril Myrtveit , Ibrahim Sadik
CPC classification number: C23C30/005 , B23B2222/14 , B23B2222/28 , B23B2222/44 , C22C29/08 , C23C14/0015 , C23C14/0021 , C23C14/0641 , C23C14/325 , Y10T428/24975 , Y10T428/265
Abstract: The present invention relates to a coated cemented carbide milling insert for either wet or dry machining of cast iron such as nodular cast iron (NCI), grey cast iron (GCI), austempered ductile iron (ADI) and compacted graphite iron (CGI) where a high wear resistance and an excellent resistance against thermo cracks are required comprising: a substrate comprising from about 5 to about 7 wt-% Co, from about 140 to about 250 ppm Ti+Ta and balance WC with a weight ratio Ti/Ta of from about 0.8 to about 1.3 and a PVD-layer consisting of AlxTi1-xN, with x=from about 0.50 to about 0.70 and with a thickness of from about 1 to about 10 μm. The invention also relates to a method for making cutting tool inserts and their use.
Abstract translation: 本发明涉及用于湿式或干式加工铸铁的涂覆硬质合金铣削刀片，例如球墨铸铁（NCI），灰铸铁（GCI），奥氏体球墨铸铁（ADI）和压实石墨铁（CGI），其中 需要高耐磨性和优异的耐热裂纹性，其包括：包含约5至约7重量％的Co，约140至约250ppm的Ti + Ta的基体和具有重量比Ti / Ta的余量WC 约0.8至约1.3，以及由Al x Ti 1-x N组成的PVD层，x =约0.50至约0.70，厚度为 约1至约10个妈妈。 本发明还涉及一种用于制造刀具刀片及其用途的方法。
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10.发明授权Process for making a cemented carbide with binder phase enriched surface zone 失效制备具有粘结相富集表面区域的硬质合金的方法
公开(公告)号：US5761593A
公开(公告)日：1998-06-02
申请号：US616312
申请日：1996-03-15
Applicant: Ake Ostlund , Ulf Oscarsson , Per Gustafson , Leif Akesson
Inventor： Ake Ostlund , Ulf Oscarsson , Per Gustafson , Leif Akesson
CPC classification number: C22C1/051 , C22C29/08 , B22F2998/00 , B22F2999/00 , Y10T428/26
Abstract: A cemented carbide insert with improved toughness and resistance against plastic deformation containing WC and cubic phases of carbide and/or carbonitride in a binder phase based on Co and/or Ni with a binder phase enriched surface zone is disclosed. The binder phase content in the insert is 3.5-12 weight-%. In a zone below the binder phase enriched surface zone, the binder phase content is 0.85-1 of the binder phase content in the inner portion of the insert and the content of cubic phases is essentially constant and equal to the content in the inner portion of the insert. The insert is formed by sintering a cemented carbide containing a nitrogen-containing material in a vacuum or inert atmosphere and heat treating the sintered insert in nitrogen at 40-400 mbar at a temperature of 1280.degree.-1430.degree. C. for a time of 5-100 min.
Abstract translation: 公开了一种硬质合金刀片，其具有改进的韧性和抗塑性变形性，其包含基于具有粘结相富集表面区域的Co和/或Ni的粘结相中的WC和立方相的碳化物和/或碳氮化物相。 插入物中的粘结相含量为3.5-12重量％。 在粘结相富集表面区域以下的区域中，粘合剂相含量为插入物内部部分中粘结相含量的0.85-1，立方相的含量基本上恒定，等于其内部含量 插入。 该嵌件通过在真空或惰性气氛中烧结含有含氮材料的硬质合金而形成，并在烧结后的插入物中在40-400毫巴的氮气中在1280〜-1430℃的温度下热处理5次 -100分钟
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