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。

公开(公告)号：US5993970A

公开(公告)日：1999-11-30

申请号：US837094

申请日：1997-04-14

Applicant: Ulf Oscarsson ,  Per Gustafson ,  Chris Chatfield ,  Mikael Lagerquist

Inventor： Ulf Oscarsson ,  Per Gustafson ,  Chris Chatfield ,  Mikael Lagerquist

IPC: C04B41/87 ,  B22F3/10 ,  C04B41/50 ,  C04B41/52 ,  C04B41/89 ,  C22C29/02 ,  C22C29/12 ,  F27B21/00 ,  F27D5/00 ,  B32B9/00

CPC classification number: C04B41/009 ,  B22F3/10 ,  C04B41/5045 ,  C04B41/52 ,  C04B41/87 ,  C04B41/89 ,  F27B21/00 ,  F27D5/00 ,  B22F2003/1042 ,  Y10T428/24942 ,  Y10T428/24975 ,  Y10T428/31678

Abstract: The present invention discloses a method of sintering of cemented carbide or cermet bodies lying on graphite trays. By using graphite trays coated with a covering layer of Y.sub.2 O.sub.3 containing .ltoreq.20 wt-% ZrO.sub.2, or corresponding volumetric amount of other refractory oxides, e.g., Al.sub.2 O.sub.3 or combinations thereof, with an average thickness of .gtoreq.10 .mu.m, the life of the trays between regrindings and recoatings can be largely extended.

Abstract translation: 本发明公开了一种烧结石墨盘上硬质合金或金属陶瓷体的方法。 通过使用涂覆有含有

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。

公开(公告)号：US08889063B2

公开(公告)日：2014-11-18

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 ,  F27B17/00 ,  B22F3/00 ,  B22F5/00

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。

公开(公告)号：USRE39999E1

公开(公告)日：2008-01-08

申请号：US11483380

申请日：1996-11-29

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

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

IPC: B23B27/14 ,  C23C16/30

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, κ-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含TiC N-N N y N y的内层的涂层， 具有柱状晶粒，随后是一层细粒度的κ-Al 2 O 3 N 3和顶层的TiN。 通过使用CVD方法沉积这些层。

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

IPC: C22C29/02 ,  B22F3/00 ,  C22C1/05 ,  C22C29/08 ,  B22F7/06

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。