Process for making a cemented carbide with binder phase enriched surface
zone
    1.
    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

    摘要: 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.

    摘要翻译: 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

    Method of producing a sintered carbonitride alloy for fine to medium
milling
    4.
    发明授权
    Method of producing a sintered carbonitride alloy for fine to medium milling 失效
    制备中微粉碎碳化氮合金烧结合金的方法

    公开(公告)号:US5561831A

    公开(公告)日:1996-10-01

    申请号:US438991

    申请日:1995-05-11

    CPC分类号: C22C29/04

    摘要: According to the invention there now is provided a method of producing a sintered titanium based carbonitride alloy with 3-25 weight-% binder phase with extremely good properties at fine to medium coarse milling. The method relates to the use of a raw material consisting of a complex cubic carbonitride comprising the main part of the metals from groups IV and V of the periodic system and carbon and nitrogen to be found in the finished alloy whereby said alloy has the composition0.89.ltoreq.X.sub.IV .ltoreq.0.970.52.ltoreq.X.sub.C .ltoreq.0.61where X.sub.IV is the molar ratio of the group IV elements of the alloy and X.sub.C is the molar ratio of carbon.

    摘要翻译: 根据本发明,现在提供了一种制备具有3-25重量%粘合剂相的烧结钛基碳氮化物合金的方法,在细至中等粗磨时具有极好的性能。 该方法涉及使用由复合立方碳氮化物组成的原料,其包含来自周期性系统的IV族和V族的金属的主要部分以及在成品合金中存在的碳和氮,由此所述合金的组成为0.89 其中XIV是合金的IV族元素与XC的摩尔比的摩尔比,其中XIV是碳的摩尔比。

    Cemented carbide with binder phase enriched surface zone
    5.
    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:US5549980A

    公开(公告)日:1996-08-27

    申请号:US258598

    申请日:1994-06-10

    摘要: 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.

    摘要翻译: 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。

    Cemented carbide body with increased wear resistance
    7.
    再颁专利
    Cemented carbide body with increased wear resistance 失效
    具有增加耐磨性的硬质合金体

    公开(公告)号:USRE41646E1

    公开(公告)日:2010-09-07

    申请号:US11484834

    申请日:1997-07-08

    IPC分类号: B22F3/12

    CPC分类号: G01M11/37 G02B6/2551

    摘要: As there is disclosed a cemented carbide body comprising WC with an average grain size of 0.5 μm and the difference in grain size within each group is >1 μm.

    摘要翻译: 由于公开了粘结相中平均粒径<10μm的WC的硬质合金体。 在硬质合金体中,WC晶粒可以分为至少两组,其中一组较小的晶粒具有最大晶粒尺寸,而一组较大晶粒具有最小晶粒尺寸bmin,并且每组包含至少10%的 WC颗粒的总量。 根据本发明,bmin-amax>0.5μm,每组中的晶粒尺寸差异>1μm。

    Cemented carbide with binder phase enriched surface zone
    8.
    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:US5451469A

    公开(公告)日:1995-09-19

    申请号:US159257

    申请日:1993-11-30

    摘要: 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.

    摘要翻译: 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。

    Sintered carbonitride alloy with improved toughness behavior and method
of producing same
    9.
    发明授权
    Sintered carbonitride alloy with improved toughness behavior and method of producing same 失效
    具有改善韧性的烧结碳氮化物合金及其制造方法

    公开(公告)号:US5314657A

    公开(公告)日:1994-05-24

    申请号:US86132

    申请日:1993-07-06

    申请人: Ake Ostlund

    发明人: Ake Ostlund

    摘要: There is now provided a method of manufacturing a sintered body of titanium-based carbonitride alloy comprising hard constituents in 5-25% binder phase where the hard constituents contain, in addition to Ti, one or more of the metals V, Nb, Ta, Cr, Mo or W and the binder phase is based on cobalt and/or nickel by powder metallurgical methods, i.e., milling, pressing and sintering. The composition of the hard constituents is:0.88 78% by weight and

    摘要翻译: 现在提供了一种制造钛基碳氮化物合金的烧结体的方法,其包含5-25%粘结相中的硬质成分,除了Ti之外,硬质成分还含有一种或多种金属V,Nb,Ta, Cr,Mo或W,并且粘结相以粉末冶金方法为基础的钴和/或镍,即研磨,压制和烧结。 硬成分的组成为:0.88 78重量%且<83重量%。

    Cemented carbide insert for turning, milling and drilling
    10.
    再颁专利
    Cemented carbide insert for turning, milling and drilling 失效
    用于车削,铣削和钻孔的硬质合金刀片

    公开(公告)号:USRE40026E1

    公开(公告)日:2008-01-22

    申请号:US11449008

    申请日:1997-07-08

    IPC分类号: C04B35/56

    摘要: There is disclosed a cemented carbide insert with excellent properties for machining of steels and stainless steels. The cemented carbide comprises WC and 4-25% Co. The WC-grains have an average grain size in the range 0.2-3.5 μm and a narrow grain size distribution in the range 0-4.5 μm.According to the method of the invention a cemented carbide cutting tool insert is made by mixing powders of WC, TiC, TaC and/or NbC, binder metal and pressing agent, drying preferably by spray drying, pressing to inserts and sintering. The method characterised in that a deagglomerated WC-powder with a narrow grain size distribution is used, that the powders of TiC, TaC and/or NbC are deagglomerated and that the mixing is wet mixing with no change in grain size or grain size distribution.

    摘要翻译: 公开了一种用于钢和不锈钢加工的优异性能的硬质合金刀片。 硬质合金包括WC和4-25%的Co。WC颗粒的平均晶粒尺寸在0.2-3.5μm的范围内,窄的粒度分布在0-4.5μm的范围内。 根据本发明的方法,通过混合WC,TiC,TaC和/或NbC,粘合剂金属和压制剂的粉末,优选通过喷雾干燥,压制成型和烧结来干燥硬质合金刀具插入物。 该方法的特征在于,使用具有窄粒度分布的解团聚WC粉末,将TiC,TaC和/或NbC的粉末进行解团化,并且混合是湿式混合,晶粒尺寸或晶粒尺寸分布没有变化。