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).
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Patent number: 11185929Abstract: A coated cutting tool of a cemented carbide substrate made of WC, a metallic binder phase and a gamma phase has a well distributed gamma phase and a reduced amount of abnormal WC grains. Further, the coated cutting tool is provided with a CVD coating of TiCN and an ?-Al2O3 layer, wherein the ?-Al2O3 layer exhibits a texture coefficient TC(0 0 12)?7.2 and wherein in the ratio I(0 0 12)/I(0 1 14)?1. The coated cutting tool has an increased resistance against plastic deformation. whilst maintaining toughness.Type: GrantFiled: February 27, 2018Date of Patent: November 30, 2021Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Leif Akesson, Anders Stenberg, Carl-Johan Maderud, Susanne Norgren, Elias Forssbeck Nyrot, Ake Ostlund, Jan Engqvist
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Publication number: 20210138556Abstract: A coated cutting tool of a cemented carbide substrate made of WC, a metallic binder phase and a gamma phase has a well distributed gamma phase and a reduced amount of abnormal WC grains. Further, the coated cutting tool is provided with a CVD coating of TiCN and an ?-Al2O3 layer, wherein the ?-Al2O3 layer exhibits a texture coefficient TC(0 0 12)?7.2 and wherein in the ratio I(0 0 12)/I(0 1 14)?1. The coated cutting tool has an increased resistance against plastic deformation. whilst maintaining toughness.Type: ApplicationFiled: February 27, 2018Publication date: May 13, 2021Inventors: Leif AKESSON, Anders STENBERG, Carl-Johan MADERUD, Susanne NORGREN, Elias FORSSBECK NYROT, Ake OSTLUND, Jan ENGQVIST
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Publication number: 20150003925Abstract: 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: ApplicationFiled: June 26, 2014Publication date: January 1, 2015Inventors: Åke ÖSTLUND, Jonny EDMAN, Erik LINDAHL, Jan ENGQVIST
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Patent number: 6210632Abstract: 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: GrantFiled: April 1, 1999Date of Patent: April 3, 2001Assignee: Sandvik ABInventors: Ake Östlund, Mats Waldenström, Ove Alm
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Patent number: 5761593Abstract: 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: GrantFiled: March 15, 1996Date of Patent: June 2, 1998Assignee: Sandvik ABInventors: Ake Ostlund, Ulf Oscarsson, Per Gustafson, Leif Akesson
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Patent number: 5649279Abstract: 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: GrantFiled: November 17, 1994Date of Patent: July 15, 1997Assignee: Sandvik ABInventors: Per Gustafson, Leif Akesson, Ake Ostlund
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Patent number: 5561831Abstract: 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: GrantFiled: May 11, 1995Date of Patent: October 1, 1996Assignee: Sandvik ABInventors: Ake Ostlund, Rolf Oskarsson
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Patent number: 5549980Abstract: 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: GrantFiled: June 10, 1994Date of Patent: August 27, 1996Assignee: Sandvik ABInventors: Ake Ostlund, Ulf Oscarsson, Per Gustafson, Leif Akesson
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Patent number: 5503653Abstract: 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: GrantFiled: July 26, 1994Date of Patent: April 2, 1996Assignee: Sandvik ABInventors: Rolf G. Oskarsson, Gerold Weinl, Ake Ostlund
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Patent number: 5484468Abstract: 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: GrantFiled: February 7, 1994Date of Patent: January 16, 1996Assignee: Sandvik ABInventors: Ake Ostlund, Ulf Oskarsson, Per Gustafson, Leif Akesson
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Patent number: 5451469Abstract: 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: GrantFiled: November 30, 1993Date of Patent: September 19, 1995Assignee: Sandvik ABInventors: Per Gustafson, Leif Akesson, Ake Ostlund
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Patent number: 5421851Abstract: 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: GrantFiled: May 6, 1992Date of Patent: June 6, 1995Assignee: Sandvik ABInventors: Rolf G. Oskarsson, Gerold Weinl, Ake Ostlund
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Patent number: 5314657Abstract: 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: GrantFiled: July 6, 1993Date of Patent: May 24, 1994Assignee: Sandvik ABInventor: Ake Ostlund
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Patent number: RE40026Abstract: 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: GrantFiled: July 8, 1997Date of Patent: January 22, 2008Assignee: Sandvik Intellectual Property ABInventors: Mats Waldenstrom, Ake Ostlund, Ove Alm
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Patent number: D325767Type: GrantFiled: August 20, 1990Date of Patent: April 28, 1992Assignee: Aktiebolaget ElectroluxInventor: Per-Ake Ostlund
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Patent number: RE41646Abstract: 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: GrantFiled: July 8, 1997Date of Patent: September 7, 2010Assignee: Sandvik Intellectual Property AktiebolagInventors: Ake Ostlund, Mats Waldenstrom, Ove Alm
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Patent number: D652436Type: GrantFiled: March 11, 2010Date of Patent: January 17, 2012Assignee: ESAB ABInventors: Per-Ake Ostlund, Bjorn Thor