Patents by Inventor Ake Ostlund

Ake Ostlund has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150003925
    Abstract: A coated cutting tool comprising substrate and a coating, wherein the coating comprises a layer of MTCVD TiCN, and a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits an X-ray diffraction pattern, as measured using CuK? radiation, the (hkl) reflections used are (012), (104), (110), (113), (116), (300), (214) and (0 0 12), and the TC(0 0 12) is higher than 5 and a full width half maximum (FWHM) of a rocking curve peak of the (0 0 12) plane of the ?-Al2O3 is lower than 30°.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Åke ÖSTLUND, Jonny EDMAN, Erik LINDAHL, Jan ENGQVIST
  • Patent number: 6210632
    Abstract: As there is disclosed a cemented carbide body comprising WC with an average grain size of <10 &mgr;m in a binder phase. In the cemented carbide body the WC grains can be classified in at least two groups in which a group of smaller grains has a maximum grain size amax and a group of larger grains has a minimum grain size bmin and each group contains at least 10 % of the total amount of WC grains. According to the invention bmin−amax>0.5 &mgr;m and the difference in grain size within each group is >1 &mgr;m.
    Type: Grant
    Filed: April 1, 1999
    Date of Patent: April 3, 2001
    Assignee: Sandvik AB
    Inventors: Ake Östlund, Mats Waldenström, Ove Alm
  • Patent number: 5761593
    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.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: June 2, 1998
    Assignee: Sandvik AB
    Inventors: Ake Ostlund, Ulf Oscarsson, Per Gustafson, Leif Akesson
  • Patent number: 5649279
    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.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: July 15, 1997
    Assignee: Sandvik AB
    Inventors: Per Gustafson, Leif Akesson, Ake Ostlund
  • Patent number: 5561831
    Abstract: 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.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: October 1, 1996
    Assignee: Sandvik AB
    Inventors: Ake Ostlund, Rolf Oskarsson
  • Patent number: 5549980
    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.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: August 27, 1996
    Assignee: Sandvik AB
    Inventors: Ake Ostlund, Ulf Oscarsson, Per Gustafson, Leif Akesson
  • Patent number: 5503653
    Abstract: The present invention relates to a sintered titanium-based carbonitride alloy for milling and turning where the hard constituents are based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W 3-25% binder phase based on Co and/or Ni. the alloy is characterized in that the bottom of the crater caused by the crater wear on an insert used in milling and turning contain grooves with a mutual distance between their peaks of 40-100 .mu.m, preferably 50-80 .mu.m, and where the main part, preferably >75% of the grooves have a depth of >12 .mu.m, preferably >15 .mu.m.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: April 2, 1996
    Assignee: Sandvik AB
    Inventors: Rolf G. Oskarsson, Gerold Weinl, Ake Ostlund
  • Patent number: 5484468
    Abstract: Cemented carbide inserts are available containing WC and cubic phases of carbide and/or carbonitride in a binder phase based on cobalt and/or nickel with a binder phase enriched surface zone. The binder phase content along a line essentially bisecting the rounded edge surfaces increases toward the edge and cubic phase is present. As a result, the edge toughness of the cutting inserts is improved.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: January 16, 1996
    Assignee: Sandvik AB
    Inventors: Ake Ostlund, Ulf Oskarsson, Per Gustafson, Leif Akesson
  • Patent number: 5451469
    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.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: September 19, 1995
    Assignee: Sandvik AB
    Inventors: Per Gustafson, Leif Akesson, Ake Ostlund
  • Patent number: 5421851
    Abstract: The present invention relates to a sintered titanium-based carbonitride alloy for milling and turning where the hard constituents are based on Ti, Zr, Hf, V, Nb, Ta, Cr, Mo and/or W and the binder phase based on Co and/or Ni. The structure comprises 10-50% by volume hard constituent grains with core-rim-structure with a mean grain size for the cores of 2-8 .mu.m in a more fine-grained matrix with a mean grain size of the hard constituents of <1 .mu.m and where said mean grain size of the coarse hard constituents grains is >1.5 .mu.m, preferably >2 .mu.m, larger than the mean grain size for the grains in the matrix. The coarse grains can be Ti(C,N), (Ti,Ta)C, (Ti,Ta)(C,N) and/or (Ti,Ta,V)(C,N).
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: June 6, 1995
    Assignee: Sandvik AB
    Inventors: Rolf G. Oskarsson, Gerold Weinl, Ake Ostlund
  • Patent number: 5314657
    Abstract: 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<a<0.96;0.04<b<0.08;0.ltoreq.c<0.04;0.ltoreq.d<0.04;0.60<f<0.73;0.80<x<0.90; and0.31<h<0.40.and the overall composition of the hard constituents phase is expressed by the formula:(Ti.sub.a,Ta.sub.b,Nb.sub.c,V.sub.d).sub.x (Mo.sub.e,W.sub.f).sub.y (C.sub.g,N.sub.h).sub.z.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: May 24, 1994
    Assignee: Sandvik AB
    Inventor: Ake Ostlund
  • Patent number: RE40026
    Abstract: 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 ?m and a narrow grain size distribution in the range 0-4.5 ?m. 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.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: January 22, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Mats Waldenstrom, Ake Ostlund, Ove Alm
  • Patent number: D325767
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: April 28, 1992
    Assignee: Aktiebolaget Electrolux
    Inventor: Per-Ake Ostlund
  • Patent number: RE41646
    Abstract: As there is disclosed a cemented carbide body comprising WC with an average grain size of <10 ?m in a binder phase. In the cemented carbide body the WC grains can be classified in at least two groups in which a group of smaller grains has a maximum grain size amax and a group of larger grains has a minimum grain size bmin and each group contains at least 10 % of the total amount of WC grains. According to the invention bmin?amax>0.5 ?m and the difference in grain size within each group is >1 ?m.
    Type: Grant
    Filed: July 8, 1997
    Date of Patent: September 7, 2010
    Assignee: Sandvik Intellectual Property Aktiebolag
    Inventors: Ake Ostlund, Mats Waldenstrom, Ove Alm
  • Patent number: D652436
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: January 17, 2012
    Assignee: ESAB AB
    Inventors: Per-Ake Ostlund, Bjorn Thor