Patents by Inventor Carl-Johan Maderud
Carl-Johan Maderud 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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Publication number: 20220288683Abstract: The present disclosure relates to a method of making a powder of dense and spherically shaped cemented carbide or cermet granules. The present disclosure also relates to a powder produced by the method and use of said powder in additive manufacturing such as 3D printing by the binder jetting technique. Furthermore, the present disclosure relates to a Hot Isostatic Pressing (HIP) process for manufacturing a product by using said powder.Type: ApplicationFiled: June 2, 2022Publication date: September 15, 2022Inventors: Carl-Johan MADERUD, Johan SUNDSTROM, Magnus EKELUND, Sven ENGLUND
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Patent number: 11261510Abstract: A cutting tool made of a cemented carbide substrate of WC, a metallic binder phase and gamma phase is provided. The cemented carbide has a well distributed gamma phase and a reduced amount of abnormal WC grains. The cutting tool has a more predicted tool life and an increased resistance against plastic deformation.Type: GrantFiled: February 27, 2018Date of Patent: March 1, 2022Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Leif Akesson, Anders Stenberg, Carl-Johan Maderud, Susanne Norgren, Elias Forssbeck Nyrot
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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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Patent number: 11104979Abstract: The present invention relates to a powder mixture for three-dimensional (3D) printing of a cermet or a cemented carbide body. The powder mixture includes 65-85 wt % of porous cemented carbide or cermet particles of a median particle size (D50) of 10-35 ?m, and 15-35 wt % of a dense cemented carbide or cermet particles of a median particle size (D50) of 3-10 ?m. The present invention also relates to a method of making a cermet or cemented carbide body, the method including the steps of forming the powder mixture, 3D printing a body using the powder mixture and a printing binder and thereby forming a 3D printed cermet or cemented carbide green body and sintering the green body and to form a cermet or cemented carbide body.Type: GrantFiled: April 6, 2017Date of Patent: August 31, 2021Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Carl-Johan Maderud, John De Flon
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Publication number: 20210140018Abstract: A cutting tool made of a cemented carbide substrate of WC, a metallic binder phase and gamma phase is provided. The cemented carbide has a well distributed gamma phase and a reduced amount of abnormal WC grains. The cutting tool has a more predicted tool life and an increased resistance against plastic deformation.Type: ApplicationFiled: February 27, 2018Publication date: May 13, 2021Inventors: Leif AKESSON, Anders STENBERG, Carl-Johan MADERUD, Susanne NORGREN, Elias FORSSBECK NYROT
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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: 20200360995Abstract: The present disclosure relates to a method of making a powder of dense and spherically shaped cemented carbide or cermet granules. The present disclosure also relates to a powder produced by the method and use of said powder in additive manufacturing such as 3D printing by the binder jetting technique. Furthermore, the present disclosure relates to a Hot Isostatic Pressing (HIP) process for manufacturing a product by using said powder.Type: ApplicationFiled: August 5, 2020Publication date: November 19, 2020Inventors: Carl-Johan MADERUD, Johan SUNDSTROM, Magnus EKELUND
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Publication number: 20190161837Abstract: The present invention relates to a powder mixture for three-dimensional (3D) printing of a cermet or a cemented carbide body. The powder mixture includes 65-85 wt % of porous cemented carbide or cermet particles of a median particle size (D50) of 10-35 ?m, and 15-35 wt % of a dense cemented carbide or cermet particles of a median particle size (D50) of 3-10 ?m. The present invention also relates to a method of making a cermet or cemented carbide body, the method including the steps of forming the powder mixture, 3D printing a body using the powder mixture and a printing binder and thereby forming a 3D printed cermet or cemented carbide green body and sintering the green body and to form a cermet or cemented carbide body.Type: ApplicationFiled: April 6, 2017Publication date: May 30, 2019Inventors: Carl-Johan MADERUD, John DE FLON
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Patent number: 9777349Abstract: The present invention relates to a method of making a cemented carbide or a cermet body comprising the steps of first forming a powder blend comprising powders forming hard constituents and metal binder. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then subjecting said mixed powder blend to a pressing and sintering operation. The method makes it possible to maintain the grain size, the grain size distribution and the morphology of the WC grains.Type: GrantFiled: October 17, 2012Date of Patent: October 3, 2017Assignee: SANDVIK INTELLECTUAL PROPERTY ABInventors: Carl-Johan Maderud, Tommy Flygare, Michael Carpenter, Jane Smith
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Publication number: 20170203368Abstract: A method for manufacturing a wear resistant component includes the steps of providing a metallic base material and a wear resistant cemented carbide body including an anchoring portion. The wear resistant cemented carbide body is arranged such that the anchoring portion is at least partially enclosed by the metallic base material. The metallic base material and the least one wear resistant cemented carbide body is subjected to Hot Isostatic Pressing (HIP). A layer of Al2O3 or hBN is arranged between the anchoring portion and the metallic base material.Type: ApplicationFiled: July 3, 2014Publication date: July 20, 2017Inventors: Carl-Johan MADERUD, Fredrik MEURLING, Tomas BERGLUND
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Publication number: 20170072469Abstract: A method of making a powder of dense and spherically shaped cemented carbide or cermet granules and a powder produced by the method is provided. The powder made according to the present method can be used in additive manufacturing such as 3D printing by the binder jetting technique. Moreover, a Hot Isostatic Pressing (HIP) process for manufacturing a product by using the powder is also disclosed.Type: ApplicationFiled: April 23, 2015Publication date: March 16, 2017Inventors: Carl-Johan MADERUD, Johan SUNDSTROM, Magnus EKELUND
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Publication number: 20140271321Abstract: The present invention relates to a method of making a cemented carbide or a cermet body comprising the steps of first forming a powder blend comprising powders forming hard constituents and metal binder. The powder blend is then subjected to a mixing operation using a non-contact mixer wherein acoustic waves achieving resonance conditions to form a mixed powder blend and then subjecting said mixed powder blend to a pressing and sintering operation. The method makes it possible to maintain the grain size, the grain size distribution and the morphology of the WC grains.Type: ApplicationFiled: October 17, 2012Publication date: September 18, 2014Applicant: SANDVIK INTELLECTUAL PROPERTY ABInventors: Carl-Johan Maderud, Tommy Flygare, Michael Carpenter, Jane Smith
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Publication number: 20120111976Abstract: The present invention relates to a process for milling a cermet or cemented carbide powder. The process comprises circulating a slurry comprising powder(s) forming hard constituents, powder(s) forming binder phase and a grinding liquid through a grinding chamber. The grinding chamber comprises grinding elements and an agitator where the agitator is rotating around an essentially horizontal axis. The process according to the present invention provides a cermet or cemented carbide powder mixture at a significantly reduced milling time.Type: ApplicationFiled: April 28, 2010Publication date: May 10, 2012Inventors: Mathias Tillman, Carl-Johan Maderud
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Patent number: 6490793Abstract: A method of manufacturing an as-cast composite roll by metallurgically bonding one or more rings of cemented carbide to a cast iron casing. The composite roll may be used for hot or cold rolling. The cast iron has the following composition in addition to Fe, in weight %, 1.9-2.8% Si, 0.02-0.10% Mg, 0.5-4% Ni, 0.1-1% Mn, balance Fe and a Ceqv=2.5-6.Type: GrantFiled: April 24, 2000Date of Patent: December 10, 2002Assignee: Sandvik ABInventors: Carl-Johan Maderud, Jan-Erik Karlsson
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Patent number: 6095958Abstract: A composite roll including one or more rings of cemented carbide metallurgically bonded to a cast iron casing. The composite roll may be used for hot or cold rolling. The cast iron has the following composition in addition to Fe, in weight %, 1.9-2.8% Si, 0.02-0.10% Mg, 0.5-4% Ni, 0.1-1% Mn, balance Fe and a C.sub.eqv =2.5-6.Type: GrantFiled: January 14, 1999Date of Patent: August 1, 2000Assignee: Sandvik ABInventors: Carl-Johan Maderud, Jan-Erik Karlsson
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Patent number: 5902942Abstract: There is now provided a roll for hot rolling comprising 70-95 weight %, preferably 85-94 weight %, WC in a binder phase consisting of only cobalt or alternatively a Co--Ni--Cr alloy containing 20-35 weight % Ni and up to 10 weight % Cr, possibly with small additions of molybdenum. The WC grains are rounded with an average grain size between 3-10 .mu.m, preferably 4-8 .mu.m. The maximum grain size should not exceed 2 times the average grain size and no more than 2% of the grains be less than half of the average grain size.Type: GrantFiled: June 30, 1997Date of Patent: May 11, 1999Assignee: Sandvik ABInventors: Carl-Johan Maderud, Thomas Ericson, Udo Fischer