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    SINTERING FURNACE AND METHOD OF MAKING CUTTING TOOLS
    1.
    发明申请
    SINTERING FURNACE AND METHOD OF MAKING CUTTING TOOLS 有权
    烧结炉和切割工具的制作方法

    公开(公告)号：US20110008199A1

    公开(公告)日：2011-01-13

    申请号：US12745305

    申请日：2008-12-19

    Applicant: Anders Karlsson ,  Gunilla Anderson ,  Peter Björkhagen ,  Per Gustafson ,  Marco Zwinkels

    Inventor： Anders Karlsson ,  Gunilla Anderson ,  Peter Björkhagen ,  Per Gustafson ,  Marco Zwinkels

    IPC: B22F3/10 ,  B22F3/00

    CPC classification number: F27B17/00 ,  B22F3/003 ,  B22F3/1028 ,  B22F2005/001 ,  B22F2203/11 ,  B22F2999/00 ,  F27B5/14 ,  F27D21/0014

    Abstract: The present invention relates to a method of making cutting tools comprising a substrate having a hard phase and a binder phase, the method comprising forming green powder compacts using powder metallurgical techniques, charging the green powder compacts, placed on one or several trays, in a furnace and sintering the green powder compacts wherein the furnace comprises an insulation package, at least three individually controlled heating elements located inside the insulation package including a vertical heating element, an upper horizontal heating element arranged in an upper part of the furnace, and a lower horizontal heating element arranged in a lower part of the furnace, wherein operating the at least three heating elements such that an average controlled cooling rate from a sintering temperature down to at least a solidification temperature of the binder phase is 0.1-4.0° C./min, and a sintering furnace operable to obtain a controlled cooling rate.

    Abstract translation: 本发明涉及一种制造切削工具的方法，该切削工具包括具有硬质相和粘结相的基底，该方法包括使用粉末冶金技术形成绿色粉末压块，将放置在一个或多个塔板上的绿色粉末压块 炉和烧结其中炉子包括绝缘包装的至少三个单独控制的加热元件，其中包括垂直加热元件的绝缘包装内的至少三个独立控制的加热元件，和布置在炉子的上部的上部水平加热元件 布置在炉子的下部的水平加热元件，其中操作至少三个加热元件，使得从烧结温度降至至少粘合相的固化温度的平均控制冷却速率为0.1-4.0℃/ min，以及可操作以获得受控冷却速率的烧结炉。

    Method of making a fine grained cemented carbide
    2.
    发明申请
    Method of making a fine grained cemented carbide 审中-公开
    制造细粒硬质合金的方法

    公开(公告)号：US20060029511A1

    公开(公告)日：2006-02-09

    申请号：US11248180

    申请日：2005-10-13

    Applicant: Per Gustafson ,  Susanne Norgren ,  Mats Waldenstrom

    Inventor： Per Gustafson ,  Susanne Norgren ,  Mats Waldenstrom

    IPC: B22F3/10

    CPC classification number: C22C1/051 ,  B22F2005/001 ,  B22F2998/10 ,  B22F2999/00 ,  C22C29/08 ,  B22F9/04 ,  B22F3/1007 ,  B22F2201/02

    Abstract: According to the present invention there is provided a method of making a finegrained tungsten carbide—cobalt cemented carbide comprising mixing, milling according to standard practice followed by sintering. By introducing nitrogen at a pressure of more than 0.5 atm into the sintering atmosphere after dewaxing but before pore closure a grain refinement including reduced grain size and less abnormal grains can be obtained.

    Abstract translation: 根据本发明，提供了一种制备精细碳化钨 - 钴硬质合金的方法，包括根据标准实践混合，研磨烧结。 通过将脱氮后的压力大于0.5atm的氮导入烧结气氛中，但在孔闭合之前，可以获得包括晶粒尺寸减小和异常晶粒少的晶粒细化。

    Cemented carbide with binder phase enriched surface zone
    4.
    发明授权
    Cemented carbide with binder phase enriched surface zone 失效
    具有粘结相富集表面区的硬质合金

    公开(公告)号：US5729823A

    公开(公告)日：1998-03-17

    申请号：US616095

    申请日：1996-03-14

    Applicant: Per Gustafson ,  Leif kesson

    Inventor： Per Gustafson ,  Leif kesson

    IPC: B23B27/14 ,  B23P15/28 ,  C22C29/02 ,  B22F3/00

    CPC classification number: C22C29/02 ,  Y10T428/12056

    Abstract: The present invention relates to a cemented carbide insert, comprising a cemented carbide substrate and a coating. The substrate contains WC and cubic carbonitride phase in a binder phase based of Co and/or Ni and has a binder phase enriched surface zone essentially free of cubic phase. The binder phase enriched surface zone prevails over the edge. As a result, an insert according to the invention has improved edge toughness and resistance against plastic deformation and is particularly useful for machining of sticky work piece materials such as stainless steel.

    Abstract translation: 本发明涉及一种硬质合金刀片，包括硬质合金基底和涂层。 该基体在基于Co和/或Ni的粘结相中含有WC和立方碳氮化物相，并且具有基本上不含立方相的粘结相富集的表面区。 粘结相丰富的表面区优于边缘。 结果，根据本发明的插入件具有改进的边缘韧性和抗塑性变形的阻力，并且特别适用于诸如不锈钢的粘性工件材料的加工。

    Method of making cemented carbide with binder phase enriched surface zone
    6.
    发明授权
    Method of making cemented carbide with binder phase enriched surface zone 有权
    制造具有粘结相富集表面区域的硬质合金的方法

    公开(公告)号：US06299992B1

    公开(公告)日：2001-10-09

    申请号：US09242683

    申请日：1999-08-25

    Applicant: Per Lindskog ,  Per Gustafson

    Inventor： Per Lindskog ,  Per Gustafson

    IPC: B32B1900

    CPC classification number: C22C29/08 ,  B22F3/101 ,  B22F2201/02 ,  B22F2998/00 ,  B22F2998/10 ,  Y10T428/12056 ,  B22F2207/03 ,  B22F2201/20

    Abstract: The present invention relates to method of making a cemented carbide insert, comprising a cemented carbide substrate and a coating. The substrate contains WC and cubic carbonitride phase in a binder phase based of Co and/or Ni and has a binder phase enriched surface zone essentially free of cubic phase. The binder phase enriched surface zone prevails over the edge. By sintering in an atmosphere essentially consisting of nitrogen the thickness of the binder phase enriched zone can be controlled.

    Abstract translation: 本发明涉及一种制造硬质合金刀片的方法，其包括硬质合金基底和涂层。 该基体在基于Co和/或Ni的粘结相中含有WC和立方碳氮化物相，并且具有基本上不含立方相的粘结相富集表面区。 粘结相丰富的表面区优于边缘。 通过在基本上由氮组成的气氛中烧结，可以控制粘结相富集区的厚度。

    Cemented carbide with binder phase enriched surface zone
    7.
    发明授权
    Cemented carbide with binder phase enriched surface zone 失效
    具有粘结相富集表面区的硬质合金

    公开(公告)号：US5649279A

    公开(公告)日：1997-07-15

    申请号：US343921

    申请日：1994-11-17

    Applicant: Per Gustafson ,  Leif Akesson ,  Ake Ostlund

    Inventor： Per Gustafson ,  Leif Akesson ,  Ake Ostlund

    IPC: C22C29/02 ,  B22F3/00 ,  C22C1/05 ,  C22C29/08

    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 mount 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的层状粘合剂相的安装区从表面移动到溶解前部附近和之下的区域。 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。

    Coated turning insert and method of making it
    8.
    发明授权
    Coated turning insert and method of making it 有权
    涂层车削刀片及其制作方法

    公开(公告)号：US06200671B1

    公开(公告)日：2001-03-13

    申请号：US09077424

    申请日：1998-09-01

    Applicant: Per Lindskog ,  Per Gustafson ,  Björn Ljungberg ,  Åke Östlund

    Inventor： Per Lindskog ,  Per Gustafson ,  Björn Ljungberg ,  Åke Östlund

    IPC: B23B2714

    CPC classification number: C23C30/005 ,  C22C29/08 ,  C23C16/30 ,  Y10T428/24975 ,  Y10T428/265

    Abstract: A coated turning insert particularly useful for turning in stainless steel is disclosed. The insert is characterized by a WC—Co-based cemented carbide substrate having a highly W-alloyed Co-binder phase and a coating including an inner layer of TiCxNyOz with columnar grains followed by a layer of fine-grained &kgr;-Al2O3 and a top layer of TiN. The layers are deposited by using CVD-methods.

    Abstract translation: 公开了一种特别适用于不锈钢车削的涂覆车刀。 该嵌件的特征在于具有高W合金Co粘合剂相的WC-Co基硬质合金基材和包括具有柱状晶粒的TiCxNyOz内层的涂层，随后是一层细粒度的κB-Al2O3和顶部 TiN层。 通过使用CVD法沉积这些层。

    Process for making a cemented carbide with binder phase enriched surface zone
    9.
    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

    IPC: C22C29/02 ,  B22F7/02 ,  C22C1/05 ,  C22C29/08 ,  C23C14/02 ,  C23C26/00 ,  C21D1/00

    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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