Patents by Inventor Jan ENGQVIST

Jan ENGQVIST 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: 20240033829
    Abstract: A coated cutting tool has a CVD coating and a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide includes Ni. The CVD coating has an inner layer of TiN and a subsequent layer of TiCN. A C-activity relative to graphite in the metallic binder is lower than 0.15 and an average d electron value of the metallic binder is 7.00-7.43, wherein an interface between the substrate and the inner TiN layer is free of Ti-containing intermetallic phase.
    Type: Application
    Filed: November 22, 2021
    Publication date: February 1, 2024
    Inventors: Linus VON FIEANDT, Raluca BRENNING, Jan ENGQVIST, Andreas BLOMQVIST, Erik HOLMSTROM
  • Publication number: 20240026500
    Abstract: A coated cutting tool has a CVD coated and a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide includes Ni. The CVD coating has an inner layer of TiN and a subsequent layer of TiCN. The C-activity relative to graphite in the metallic binder is lower than 0.15 and an average d electron value of the metallic binder is 7.00-7.43, wherein an interface between the substrate and the inner TiN layer is free of Ti-containing intermetallic phase.
    Type: Application
    Filed: November 22, 2021
    Publication date: January 25, 2024
    Inventors: Linus VON FIEANDT, Raluca BRENNING, Jan ENGQVIST, Andreas BLOMQVIST, Erik HOLMSTROM
  • Patent number: 11628503
    Abstract: A coated cutting tool having a substrate and a coating is provided. The coating includes an inner ?-Al2O3-multilayer and an outer ?-Al2O3-single-layer. The thickness of the inner ?-Al2O3-multilayer is less than or equal to 35% of the sum of the thickness of the inner ?-Al2O3-multilayer and the thickness of the outer ?-Al2O3-single-layer. The sum of the thickness of the inner ?-Al2O3-multilayer and the outer ?-Al2O3-single-layer is 2-15 ?m. The inner ?-Al2O3-multilayer consists of alternating sublayers of ?-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO. The inner ?-Al2O3-multilayer can include at least 5 sublayers of ?-Al2O3.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: April 18, 2023
    Assignee: AB Sandvik Coromant
    Inventors: Jan Engqvist, Erik Lindahl
  • Publication number: 20220219244
    Abstract: A coated cutting tool is provided. The cutting tool is CVD coated and has a substrate of cemented carbide, wherein a metallic binder in the cemented carbide includes Ni. The CVD coating has an inner layer of TiN and a subsequent layer of TiCN and a layer of Al2O3 located between the TiCN layer and an outermost surface of the coated cutting tool.
    Type: Application
    Filed: May 26, 2020
    Publication date: July 14, 2022
    Inventors: Linus VON FIEANDT, Raluca MORJAN BRENNING, Jan ENGQVIST
  • Publication number: 20220205109
    Abstract: A coated cutting tool is CVD coated and includes a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide Includes Ni. The CVD coating includes an inner layer of TiN and a subsequent layer of TiCN.
    Type: Application
    Filed: May 26, 2020
    Publication date: June 30, 2022
    Inventors: Linus VON FIEANDT, Raluca MORJAN BRENNING, Jan ENGQVIST
  • Patent number: 11365477
    Abstract: A coated cutting tool includes a multilayer of alternating sublayers of ?-Al2O3 and sublayers of TiN, TiC, TiCN, TiCO or TiCNO. The multilayer includes at least 3 sublayers of ?-Al2O3. The multilayer further exhibits an XRD diffraction over a ?-2? scan of 15°-140°, wherein the 0 0 2 diffraction peak (peak area) is the strongest peak originating from the ?-Al2O3 sublayers of the multilayer.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: June 21, 2022
    Assignee: Sandvik Intellectual Property AB
    Inventors: Erik Lindahl, Jan Engqvist
  • Patent number: 11286559
    Abstract: A coated cutting tool includes a substrate and a coating. The coating has an ?-Al2O3-multilayer of alternating sublayers of ?-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO. The ?-Al2O3-multilayer includes at least 5 sublayers of ?-Al2O3, wherein the total thickness of the ?-Al2O3-multilayer is 1-15 ?m and wherein a period in the ?-Al2O3-multilayer is 50-900 nm. The ?-Al2O3-multilayer exhibits an XRD diffraction over a ?-2? scan of 20°-140°, wherein the relation of the intensity of the 0 0 12 diffraction peak (peak area), I(0 0 12), to the intensities of the 1 1 3 diffraction peak (peak area), I(1 1 3), the 1 1 6 diffraction peak (peak area), I(1 1 6), and the 0 2 4 diffraction peak (peak area), I(0 2 4), is I(0 0 12)/I(1 1 3)>1, I(0 0 12)/I(1 1 6)>1 and I(0 0 12)/I(0 2 4)>1.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: March 29, 2022
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Erik Lindahl, Jan Engqvist
  • Publication number: 20220072624
    Abstract: The present invention relates to a coated cutting tool including a substrate and a coating. The coating has an inner ?-Al2O3-multilayer and an outer ?-Al2O3-single-layer. The thickness of the inner ?-Al2O3-multilayer is 50% to 80% of the sum of the thickness of the inner ?-Al2O3-multilayer and the thickness of the outer ?-Al2O3-single-layer. The sum of the thickness of the inner ?-Al2O3-multilayer and the outer ?-Al2O3-single-layer is 2-15 ?m. The ?-Al2O3-multilayer has alternating sublayers of ?-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO, the ?-Al2O3-multilayer having at least 8 sublayers of ?-Al2O3.
    Type: Application
    Filed: December 17, 2019
    Publication date: March 10, 2022
    Inventors: Jan ENGQVIST, Irantzu SACRISTAN PEREZ
  • Patent number: 11213893
    Abstract: A coated cutting tool includes a substrate and a coating of one of more layers. The coating includes a layer of ?-Al2O3 of a thickness of 1-20 ?m deposited by chemical vapour deposition (CVD). The ?-Al2O3 layer exhibits an X-ray diffraction pattern and wherein the texture coefficient TC(h k 1) is defined according to the Harris formula, wherein 1<TC(0 2 4)<4 and 3<TC(0 0 12)<6.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: January 4, 2022
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Jan Engqvist, Erik Lindahl
  • Patent number: 11203069
    Abstract: A coated cutting tool for chip forming machining of metals includes a substrate having a surface coated with a chemical vapour deposition (CVD) coating. The substrate is coated with a coating having a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits a texture coefficient TC(0 0 12)?7.2 and wherein the ratio of I(0 0 12)/I(0 1 14)?0.8. The coating further includes a MTCVD TiCN layer located between the substrate and the ?-Al2O3 layer. The MTCVD TiCN layer exhibits a pole figure, as measured by EBSD, in a portion of the MTCVD TiCN layer parallel to the outer surface of the coating and less than 1 ?m from the outer surface of the MTCVD TiCN, wherein a pole plot based on the data of the pole figure, with a bin size of 0.25° over a tilt angle range of 0°???45° from the normal of the outer surface of the coating shows a ratio of intensity within ??15° tilt angle to the intensity within 0°???45° of ?45%.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: December 21, 2021
    Assignee: Sandvik Intellectual Property AB
    Inventors: Raluca Morjan Brenning, Jan Engqvist, Erik Lindahl, Ernesto Coronel
  • Patent number: 11185929
    Abstract: 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: Grant
    Filed: February 27, 2018
    Date of Patent: November 30, 2021
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Leif Akesson, Anders Stenberg, Carl-Johan Maderud, Susanne Norgren, Elias Forssbeck Nyrot, Ake Ostlund, Jan Engqvist
  • Publication number: 20210138556
    Abstract: 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: Application
    Filed: February 27, 2018
    Publication date: May 13, 2021
    Inventors: Leif AKESSON, Anders STENBERG, Carl-Johan MADERUD, Susanne NORGREN, Elias FORSSBECK NYROT, Ake OSTLUND, Jan ENGQVIST
  • Publication number: 20210123140
    Abstract: A coated cutting tool having a substrate and a coating is provided. The coating includes an inner ?-Al2O3-multilayer and an outer ?-Al2O3-single-layer. The thickness of the inner ?-Al2O3-multilayer is less than or equal to 35% of the sum of the thickness of the inner ?-Al2O3-multilayer and the thickness of the outer ?-Al2O3-single-layer. The sum of the thickness of the inner ?-Al2O3-multilayer and the outer ?-Al2O3-single-layer is 2-15 ?m. The inner ?-Al2O3-multilayer consists of alternating sublayers of ?-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO. The inner ?-Al2O3-multilayer can include at least 5 sublayers of ?-Al2O3.
    Type: Application
    Filed: June 27, 2019
    Publication date: April 29, 2021
    Inventors: Jan ENGQVIST, Erik LINDAHL
  • Publication number: 20200306837
    Abstract: A coated cutting tool includes a substrate and a coating of one of more layers. The coating includes a layer of ?-Al2O3 of a thickness of 1-20 ?m deposited by chemical vapour deposition (CVD). The ?-Al2O3 layer exhibits an X-ray diffraction pattern and wherein the texture coefficient TC(h k 1) is defined according to the Harris formula, wherein 1<TC(0 2 4)<4 and 3<TC(0 0 12)<6.
    Type: Application
    Filed: June 20, 2017
    Publication date: October 1, 2020
    Inventors: Jan ENGQVIST, Erik LINDAHL
  • Publication number: 20200308707
    Abstract: A coated cutting tool for chip forming machining of metals includes a substrate having a surface coated with a chemical vapour deposition (CVD) coating. The substrate is coated with a coating having a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits a texture coefficient TC(0 0 12)?7.2 and wherein the ratio of I(0 0 12)/I(0 1 14)?0.8. The coating further includes a MTCVD TiCN layer located between the substrate and the ?-Al2O3 layer. The MTCVD TiCN layer exhibits a pole figure, as measured by EBSD, in a portion of the MTCVD TiCN layer parallel to the outer surface of the coating and less than 1 ?m from the outer surface of the MTCVD TiCN, wherein a pole plot based on the data of the pole figure, with a bin size of 0.25° over a tilt angle range of 0°???45° from the normal of the outer surface of the coating shows a ratio of intensity within ??15° tilt angle to the intensity within 0°???45° of ?45%.
    Type: Application
    Filed: June 20, 2017
    Publication date: October 1, 2020
    Inventors: Raluca MORJAN BRENNING, Jan ENGQVIST, Erik LINDAHL, Ernesto CORONEL
  • Patent number: 10745810
    Abstract: The present disclosure relates to a coated cutting tool having a substrate and a coating, wherein the coating includes at least one layer of ?-Al2O3 with a thickness of 1-20 ?m deposited by chemical vapour deposition (CVD). A ?-scan from ?80° to 80° over the (0 0 6) reflection of the ?-Al2O3 layer shows the strongest peak centered around 0° and the full width half maximum (FWHM) of the peak is <25°.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: August 18, 2020
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Erik Lindahl, Jan Engqvist
  • Publication number: 20200115794
    Abstract: A coated cutting tool includes a multilayer of alternating sublayers of ?-Al2O3 and sublayers of TiN, TiC, TiCN, TiCO or TiCNO. The multilayer includes at least 3 sublayers of ?-Al2O3. The multilayer further exhibits an XRD diffraction over a ?-2?scan of 15°-140°, wherein the 0 0 2 diffraction peak (peak area) is the strongest peak originating from the ?-Al2O3 sublayers of the multilayer.
    Type: Application
    Filed: June 19, 2018
    Publication date: April 16, 2020
    Inventors: Erik LINDAHL, Jan ENGQVIST
  • Publication number: 20200095675
    Abstract: A coated cutting tool includes a substrate and a coating. The coating has an ?-Al2O3-multilayer of alternating sublayers of ?-Al2O3 and sublayers of TiCO, TiCNO, AlTiCO or AlTiCNO. The ?-Al2O3-multilayer includes at least 5 sublayers of ?-Al2O3, wherein the total thickness of the ?-Al2O3-multilayer is 1-15 ?m and wherein a period in the ?-Al2O3-multilayer is 50-900 nm. The ?-Al2O3-multilayer exhibits an XRD diffraction over a ?-2? scan of 20°-140°, wherein the relation of the intensity of the 0 0 12 diffraction peak (peak area), I(0 0 12), to the intensities of the 1 1 3 diffraction peak (peak area), I(1 1 3), the 1 1 6 diffraction peak (peak area), I(1 1 6), and the 0 2 4 diffraction peak (peak area), I(0 2 4), is I(0 0 12)/I(1 1 3)>1, I(0 0 12)/I(1 1 6)>1 and I(0 0 12)/I(0 2 4)>1.
    Type: Application
    Filed: June 5, 2018
    Publication date: March 26, 2020
    Inventors: Erik LINDAHL, Jan ENGQVIST
  • Patent number: 10570509
    Abstract: A coated cutting tool for chip forming machining of metals includes a substrate having a surface coated with a chemical vapour deposition (CVD) coating. The coated cutting tool has a substrate coated with a coating including a layer of ?-Al2O3, wherein the ?-Al2O3 layer exhibits a dielectric loss of 10?6?tan ??0.0025, as measured with AC at 10 kHz, 100 mV at room temperature of 20° C.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: February 25, 2020
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Carl Bjormander, Erik Lindahl, Jan Engqvist
  • Patent number: 10286453
    Abstract: A coated cutting tool insert includes a substrate of cemented carbide, cermet, ceramics, steel or cubic boron nitride having deposited thereon a coating having a total thickness of 60 ?m, including one or more layers having a wear resistant layer of ?-Al2O3 of a thickness of 1 to 45 ?m deposited by chemical vapour deposition (CVD). The ?-Al2O3 layer includes at least two portions, a first thickness portion and a second thickness portion immediately on top of the first thickness portion. The first thickness portion has an essentially columnar ?-Al2O3 grain structure, and at a transition from the first thickness portion to the second thickness portion the grain boundaries of at least 1 out of 25 neighboring grains of the ?-Al2O3 grains undergo a directional change into a direction that is essentially perpendicular, 90±45 degrees, to the grain boundaries in the first thickness portion.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: May 14, 2019
    Assignee: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Sakari Ruppi, Hindrik Engstrom, Jonas Lauridsen, Oscar Alm, Peter Matsson, Tommy Larsson, Erik Lindahl, Jan Engqvist, Dirk Stiens