Patents Assigned to Uddeholms AB
  • Patent number: 11242581
    Abstract: The invention relates to an alloy produced by powder metallurgy and having a non-amorphous matrix, the alloy consists of in weight % (wt. %): C 0-2.5 Si 0-2.5 Mn 0-15 Cr 0-25 Mo 4-35 B 0.2-2.8 optional elements, balance Fe and/or Ni apart from impurities, wherein the alloy comprises 3-35 volume % hard phase particles, the hard phase particles comprises at least one of borides, nitrides, carbides and/or combinations thereof, at least 90% of the hard phase particles have a size of less than 5 ?m and at least 50% of the hard phase particles have a size in the range of 0.3-3 ?m.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: February 8, 2022
    Assignee: Uddeholms AB
    Inventor: Magnus Tidesten
  • Patent number: 11085108
    Abstract: The invention relates to a steel for a tool holder. The steel comprises the following main components (in wt. %): C 0.07-0.13 Si 0.10-0.45 Mn 1.5-3.1 Cr 2.4-3.6 Ni 0.5-2.0 Mo 0.1-0.7 Al 0.001-0.06 S?0.003 The steel has a bainitic microstructure comprising up to 20 volume % retained austenite and up to 20 volume % martensite.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: August 10, 2021
    Assignee: Uddeholms AB
    Inventors: Petter Damm, Lena Rahlen, Amanda Forsberg, Victoria Bergqvist, Riccardo Zanchetta
  • Publication number: 20190226059
    Abstract: The invention relates to a steel for a tool holder. The steel comprises the following main components (in wt. %): C 0.07-0.13 Si 0.10-0.45 Mn 1.5-3.1 Cr 2.4-3.6 Ni 0.5-2.0 Mo 0.1-0.7 Al 0.001-0.06 S?0.003 The steel has a bainitic microstructure comprising up to 20 volume % retained austenite and up to 20 volume % martensite.
    Type: Application
    Filed: June 7, 2017
    Publication date: July 25, 2019
    Applicant: Uddeholms AB
    Inventors: Petter DAMM, Lena RÅHLEN, Amanda FORSBERG, Victoria BERGQVIST, Riccardo ZANCHETTA
  • Publication number: 20180044766
    Abstract: The invention relates to an alloy produced by powder metallurgy and having a non-amorphous matrix, the alloy consists of in weight % (wt. %): C 0-2.5 Si 0-2.5 Mn 0-15 Cr 0-25 Mo 4-35 B 0.2-2.8 optional elements, balance Fe and/or Ni apart from impurities, wherein the alloy comprises 3-35 volume % hard phase particles, the hard phase particles comprises at least one of borides, nitrides, carbides and/or combinations thereof, at least 90% of the hard phase particles have a size of less than 5 ?m and at least 50% of the hard phase particles have a size in the range of 0.3-3 ?m.
    Type: Application
    Filed: December 15, 2015
    Publication date: February 15, 2018
    Applicant: Uddeholms AB
    Inventor: Magnus TIDESTEN
  • Patent number: 8808472
    Abstract: A steel alloy suitable for holders and holder details for plastic molding tools contains in weight-%: 0.06-0.15 C, 0.07-0.22 N, wherein the total amount of C+N shall satisfy the condition, 0.16?C+N?0.26, 0.1-1.0 Si, 0.1-2.0 Mn, 12.5-14.5 Cr, 0.8-2.5 Ni, 0.1 1.5 Mo, optionally vanadium up to max. 0.7 V, optionally, in order to improve the machinability of the steel, one or more of the elements S, Ca and O in amounts up to max. 0.25 S, max. 0.01 (100 ppm) Ca, max. 0.01 (100 ppm) O, balance iron and unavoidable impurities.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: August 19, 2014
    Assignee: Uddeholms AB
    Inventors: Odd Sandberg, Magnus Tidesten
  • Patent number: 8562761
    Abstract: Steel is described having a chemical composition, in weight-%, of 0.3 to 0.5% carbon (C), from traces to a max. of 1.5% silicon (Si), 0.2 to 1.5% manganese (Mn), 0.01 to 0.2% sulfur (S), 1.5 to 4% chromium (Cr), 1.5 to 5% nickel (Ni), 0.5 to 2% molybdenum (Mo), which at least partially may be replaced by twice as much tungsten (W), 0.2 to 1.5% vanadium (V), from traces to a max. of 0.2% rare earth metals, and a balance essentially of only iron, impurities and accessory elements in normal amounts. In addition, a method for manufacturing a blank of the steel and a process for manufacturing a cutting tool body or holder for cutting tools of the steel is described.
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: October 22, 2013
    Assignee: Uddeholms AB
    Inventors: Staffan Gunnarsson, Anna Medvedeva
  • Patent number: 8440136
    Abstract: The invention relates to a powder metallurgically manufactured steel with a chemical composition containing, in % by weight: 0.01-2 C, 0.6-10 N, 0.01-3.0 Si, 0.01-10.0 Mn, 16-30 Cr, 0.01-5 Ni, 0.01-5.0 (Mo+W/2), 0.01-9 Co, max. 0.5 S and 0.5-14 (V+Nb/2), where the contents of N on the one hand and of (V+Nb/2) on the other hand are balanced in relation to each other such that the contents of these elements are within an area that is defined by the coordinates A?, B?, G, H, A?, where the coordinates of [N, (V+Nb/2)] are: A?: [0.6,0.5]; B?: [1.6,0.5]; G: [9.8,14.0]; H: [2.6,14.0], and max. 7 of (Ti+Zr+Al), balance essentially only iron and impurities at normal amounts. The steel may be used for tools for injection molding, compression molding and extrusion of components of plastics, and cold working.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: May 14, 2013
    Assignee: Uddeholms AB
    Inventors: Lennart Jönson, Odd Sandberg
  • Patent number: 8025839
    Abstract: The invention relates to a powder metallurgically manufactured steel with a chemical composition containing, in % by weight: 0.01-2 C, 0.6-10 N, 0.01-3.0 Si, 0.01-10.0 Mn, 16-30 Cr, 0.01-5 Ni, 0.01-5.0 (Mo+W/2), 0.01-9 Co, max. 0.5 S and 0.5-14 (V+Nb/2), where the contents of N on the one hand and of (V+Nb/2) on the other hand are balanced in relation to each other such that the contents of these elements are within an area that is defined by the coordinates A?, B?, G, H, A?, where the coordinates of [N, (V+Nb/2)] are: A: [0.6,0.5]; B?: [1.6,0.5]; G: [9.8,14.0]; H: [2.6,14.0], and max. 7 of (Ti+Zr+Al), balance essentially only iron and impurities at normal amounts. The steel is intended to be used in the manufacturing of tools for injection moulding, compression moulding and extrusion of components of plastics, and for tools for cold working, which are exposed to corrosion.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: September 27, 2011
    Assignee: Uddeholms AB
    Inventors: Lennart Jönson, Odd Sandberg
  • Patent number: 7909906
    Abstract: A cold work steel has the following chemical composition in weight-%: 1.25-1.75% (C+N), however at least 0.5% C 0.1-1.5% Si 0.1-1.5% Mn 4.0-5.5% Cr 2.5-4.5% (Mo+W/2), however max. 0.5% W 3.0-4.5% (V+Nb/2), however max. 0.5% Nb max 0.3% S balance iron and unavoidable impurities, and a microstructure which in the hardened and tempered condition of the steel contains 6-13 vol-% of vanadium-rich MX-carbides, -nitrides and/or carbonitrides which are evenly distributed in the matrix of the steel, where X is carbon and/or nitrogen, at least 90 vol-% of said carbides, nitrides and/or carbonitrides having an equivalent diameter, Deq, which is smaller than 3.0 ?m; and totally max. 1 vol-% of other, possibly existing carbides, nitrides or carbonitrides.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: March 22, 2011
    Assignee: Uddeholms AB
    Inventors: Odd Sandberg, Lennart Jönson, Magnus Tidesten
  • Publication number: 20110000587
    Abstract: Steel is described having a chemical composition, in weight-%, of 0.3 to 0.5% carbon (C), from traces to a max. of 1.5% silicon (Si), 0.2 to 1.5% manganese (Mn), 0.01 to 0.2% sulfur (S), 1.5 to 4% chromium (Cr), 1.5 to 5% nickel (Ni), 0.5 to 2% molybdenum (Mo), which at least partially may be replaced by twice as much tungsten (W), 0.2 to 1.5% vanadium (V), from traces to a max. of 0.2% rare earth metals, and a balance essentially of only iron, impurities and accessory elements in normal amounts. In addition, a method for manufacturing a blank of the steel and a process for manufacturing a cutting tool body or holder for cutting tools of the steel is described.
    Type: Application
    Filed: March 17, 2009
    Publication date: January 6, 2011
    Applicant: Uddeholms AB
    Inventors: Staffan Gunnarsson, Anna Medvedeva
  • Patent number: 4486385
    Abstract: A tubular composite element of metal, particularly steel, whereby at least the two opposite ends of the tubular composite element consist of different materials, for example carbon steel and stainless steel, and a process and a pressing for simultaneously producing two or more of such composite elements, at least two powders each consisting of one of the different materials, which have been produced by atomizing melts of the materials in question, are introduced alternately and separately from one another into three or more sections each extending over a predetermined axial length of a metallic hollow cylindrical casing and are condensed by vibration and/or ultrasound to around 60 to 70% of the theoretical density and by cold isostatic pressing of the closed casing under a pressure of at least about 3000 bars to at least 80% of the theoretical density and the pressing thus obtained is heated, subsequently hot-extruded to form a tube and the tube thus formed is divided up into the two or more composite element
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: December 4, 1984
    Assignee: NYBY Uddeholm AB
    Inventor: Christer Aslund
  • Patent number: 4369078
    Abstract: This invention relates to a process and an apparatus for converting lump-size material, particularly scrap, of titanium metal or its alloys, preferably of low oxygen content, into powder-form material, which is useable for forming in a powder-metallurgical way pressings and workpieces, wherein the lump-size material is highly embrittled by charging with hydrogen, the embrittled material is size-reduced by means of size-reducing machines, particularly impeller breakers, impact mills, hammer mills, impact hammer mills or hammer breakers, the size-reduced brittle material preferably having a particle size of less than about 10 mm and more particularly of less than about 6 mm is further size-reduced by means of at least one jet stream by impinging on a baffle plate or an anvil or on the particles of at least one other jet stream for the purpose of conversion into the powder-form material, and the powder-form material is converted into the ductile state by heating, preferably at temperatures above 450.degree. C.
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: January 18, 1983
    Assignee: NYBY Uddeholm AB
    Inventor: Christer Aslund
  • Patent number: 4294872
    Abstract: When a coating composition is applied to a web, the composition is applied in excess, and the excess is wiped off with the help of a portion of the web which has not yet been coated.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: October 13, 1981
    Assignee: Billerud Uddeholm AB
    Inventor: Mats O. Kullander