Patents by Inventor Ulf Rolander

Ulf Rolander 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).

  • Patent number: 7713468
    Abstract: Method of producing a sintered body comprising the steps of mixing one or more powders forming hard constituents with powders forming a binder phase comprising cobalt powder where the cobalt powder comprises cobalt having mainly a fcc-structure defined as the peak height ratio between the Co-fcc(200)/Co-hcp(101) being greater than or equal to about 3/2, as measured between the baseline and maximum peak height, measured by XRD with a 2?/? focusing geometry and Cu-K? radiation. The present invention also relates to a ready-to-press powder comprising cobalt having mainly a fcc-structure and where the cobalt powder has a grain size (FSSS) of from about 0.2 to about 2.9 ?m. The present invention also relates to sintered bodies made according to the method. The sintered bodied according to the present invention have reduced porosity and less crack formation.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: May 11, 2010
    Assignee: Sandvik Intellectual Property AB
    Inventors: Jeanette Persson, Leif Dahl, Gerold Weinl, Ulf Rolander
  • Patent number: 7645316
    Abstract: A titanium based carbonitride alloy contains Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, Co with only impurity levels of Ni and Fe, 4-7 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The Co content is 9-<12 at % for general finishing applications and 12-16% for semifinishing applications. The amount of undissolved Ti(C,N) cores must be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The invented alloy is particularly useful for semifinishing of steel and cast iron.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: January 12, 2010
    Assignee: Sandvik Intellectual Property Aktiebolag
    Inventors: Ulf Rolander, Marco Zwinkels, Gerold Weinl
  • Patent number: 7588621
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: September 15, 2009
    Assignee: Sandvik Intellectual Property Aktiebolag
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Publication number: 20080127776
    Abstract: Method of producing a sintered body comprising the steps of mixing one or more powders forming hard constituents with powders forming a binder phase comprising cobalt powder where the cobalt powder comprises cobalt having mainly a fcc-structure defined as the peak height ratio between the Co-fcc(200)/Co-hcp(101) being greater than or equal to about 3/2, as measured between the baseline and maximum peak height, measured by XRD with a 2?/? focusing geometry and Cu-K? radiation. The present invention also relates to a ready-to-press powder comprising cobalt having mainly a fcc-structure and where the cobalt powder has a grain size (FSSS) of from about 0.2 to about 2.9 ?m. The present invention also relates to sintered bodies made according to the method. The sintered bodied according to the present invention have reduced porosity and less crack formation.
    Type: Application
    Filed: November 19, 2007
    Publication date: June 5, 2008
    Inventors: Jeanette Persson, Leif Dahl, Gerold Weinl, Ulf Rolander
  • Patent number: 7332122
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 19, 2008
    Assignee: Sandvik Intellectual Property AB
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Publication number: 20070289675
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Application
    Filed: August 23, 2007
    Publication date: December 20, 2007
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Publication number: 20070039416
    Abstract: A titanium based carbonitride alloy contains Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, Co with only impurity levels of Ni and Fe, 4-7 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The Co content is 9-<12 at % for general finishing applications and 12-16% for semifinishing applications. The amount of undissolved Ti(C,N) cores must be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The invented alloy is particularly useful for semifinishing of steel and cast iron.
    Type: Application
    Filed: October 30, 2006
    Publication date: February 22, 2007
    Inventors: Ulf Rolander, Marco Zwinkels, Gerold Weinl
  • Patent number: 7157044
    Abstract: A titanium based carbonitride alloy contains Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, Co with only impurity levels of Ni and Fe, 4–7 at % Nb, 3–8 at % W and has a C/(C+N) ratio of 0.50–0.75. The Co content is 9–<12 at % for general finishing applications and 12–16% for semifinishing applications. The amount of undissolved Ti(C,N) cores must be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The invented alloy is particularly useful for semifinishing of steel and cast iron.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: January 2, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventors: Ulf Rolander, Marco Zwinkels, Gerold Weinl
  • Publication number: 20040129111
    Abstract: A titanium based carbonitride alloy containing Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, 9-14 at % Co with only impurity levels of Ni and Fe, 1-<3 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The amount of undissolved Ti(C,N) cores should be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The alloy is particularly useful for milling of steel.
    Type: Application
    Filed: October 7, 2003
    Publication date: July 8, 2004
    Applicant: SANDVIK AB.
    Inventors: Gerold Weinl, Ulf Rolander, Marco Zwinkels
  • Publication number: 20040115082
    Abstract: A titanium based carbonitride alloy contains Ti, Nb, W, C, N and Co. The alloy also contains, in addition to Ti, Co with only impurity levels of Ni and Fe, 4-7 at % Nb, 3-8 at % W and has a C/(C+N) ratio of 0.50-0.75. The Co content is 9-<12 at % for general finishing applications and 12-16% for semifinishing applications. The amount of undissolved Ti(C,N) cores must be kept between 26 and 37 vol % of the hard constituents, the balance being one or more complex carbonitrides containing Ti, Nb and W. The invented alloy is particularly useful for semifinishing of steel and cast iron.
    Type: Application
    Filed: October 7, 2003
    Publication date: June 17, 2004
    Applicant: SANDVIK AB
    Inventors: Ulf Rolander, Marco Zwinkels, Gerold Weinl
  • Patent number: 6676893
    Abstract: The presently claimed invention relates to a method of making a PcBN cutting tool insert. The method includes the following steps: mixing raw material powders, (e.g., cBN, hBN, TiC, TiN, Ti(C,N), WC, W, C, Co, Co2Al9, Al AlN, Al2O3) with a liquid (e.g., ethanol) and an agent (e.g., polyethylene glycol, PEG) to form a homogeneous slurry with the desired composition; forming spherical powder agglomerates, typically 100 &mgr;m in diameter, preferably by spray drying; pressing said agglomerates to form a body of desired dimensions and density using conventional tool pressing technology; removing the agent from the powder at a suitable temperature and atmosphere; raising the temperature to 1000-1350° C. in vacuum; solid state sintering the body at 1000-1350° C. in vacuum, for 1-90 minutes to form a body with 35-55 vol % porosity; optionally, adding 0.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: January 13, 2004
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl
  • Publication number: 20020112408
    Abstract: The presently claimed invention relates to a method of making a PcBN cutting tool insert.
    Type: Application
    Filed: April 25, 2002
    Publication date: August 22, 2002
    Inventors: Ulf Rolander, Gerold Weinl
  • Patent number: 6344170
    Abstract: The present invention relates to a sintered body of a carbonitride alloy with titanium as main component which has improved properties particularly when used as cutting tool material in general finishing cutting operations requiring high deformation resistance in combination with relatively high toughness. This has been achieved by combining a carbonitride based hard phase of specific chemical composition with an extremely solution hardened Co-based binder phase.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: February 5, 2002
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl, Anders Piirhonen, Marco Zwinkels
  • Patent number: 6340445
    Abstract: A sintered body of a carbonitride alloy with titanium as main component which has improved properties particularly when used as cutting tool material in light finishing cutting operations at high cutting speed. This has been achieved by combining a carbonitride based hard phase of specific chemical composition with an extremely solution hardened Co-based binder phase.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: January 22, 2002
    Assignee: Sandvik AB
    Inventors: Anders Piirhonen, Marco Zwinkels, Ulf Rolander, Gerold Weinl
  • Patent number: 6325838
    Abstract: The present invention relates to a sintered body of a carbonitride alloy with titanium as main component which has improved properties particularly when used as cutting tool material in cutting operations requiring high toughness. This has been achieved by combining a carbonitride based hard phase of specific chemical composition with an extremely solution hardened Co-based binder phase.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: December 4, 2001
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Anders Piirhonen, Marco Zwinkels, Ulf Rolander
  • Patent number: 6290902
    Abstract: The present invention relates to a method for manufacturing a sintered body of carbonitride alloy with titanium as the main component and cobalt as the binder phase and which does not have any compositional gradients or center porosity concentration after sintering. This is achieved by processing the material in a specific manner to obtain a lower melting point of the liquid phase in the interior of the body than in the surface while balancing the gas atmosphere outside the body with the alloy composition during all stages of the liquid phase sintering.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: September 18, 2001
    Assignee: Sandvik AB
    Inventors: Marco Zwinkels, Ulf Rolander, Gerold Weinl, Anders Piirhonen
  • Patent number: 6287489
    Abstract: A method of making a PcBN cutting tool insert is provided. The composite body may be a PcBN cutting tool insert. The method includes mixing raw material powders consisting of cBN and one or more of hBN, TiC, TiN, Ti(C,N), WC, W, C, Co, Co2Al9, Al AlN, Al2O3 with a liquid (e.g., ethanol) and an agent (e.g., polyethylene glycol, PEG) to form a homogeneous slurry with the desired composition; forming spherical powder agglomerates, typically 100 &mgr;m in diameter, preferably by spray drying; filling the PcBN powder into recesses, pockets, grooves, etc., of a cemented carbide or cermet substrate; presintering the compacted body to remove the agent; and causing the PcBN powder to be sintered together and simultaneously bonded to the substrate inside a container under HP/HT-conditions to form a composite body.
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: September 11, 2001
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl
  • Patent number: 6197083
    Abstract: The present invention relates to a method for obtaining a sintered body of carbonitride alloy with titanium as main component which does not have a binder phase layer on the surface after sintering. This is obtained by performing the liquid phase sintering step of the process at 1-80 mbar of CO gas in the sintering atmosphere.
    Type: Grant
    Filed: July 9, 1998
    Date of Patent: March 6, 2001
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl
  • Patent number: 6193777
    Abstract: An uncoated titanium-based carbonitride cutting tool insert with superior plastic deformation resistance and wear resistance is provided. This is accomplished by heat treating the material in nitrogen atmosphere under conditions to obtain a nitrogen rich surface zone, also containing substantial amounts of binder phase.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: February 27, 2001
    Assignee: Sandvik AB
    Inventors: Gerold Weinl, Ulf Rolander, Per Lindahl
  • Patent number: 6129891
    Abstract: The present invention relates to a sintered body of titanium-based carbonitride alloy comprising hard constituents containing at least tungsten in addition to titanium in a binder phase based on cobalt. There are four distinctly different microstructural components, namely: A) cores which are remnants of and have a metal composition determined by the raw material powder; B) tungsten-rich cores formed during the sintering; C) outer rims with intermediate tungsten content formed during the sintering; and D) a binder phase of a solid solution of at least titanium and tungsten in cobalt. Toughness and wear resistance are varied by adding WC, (Ti,W)C, and/or (Ti,W)(C,N) in varying amounts as raw materials.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: October 10, 2000
    Assignee: Sandvik AB
    Inventors: Ulf Rolander, Gerold Weinl, Per Lindahl, Hans-Olof Andren