Patents by Inventor Anders Lenander
Anders Lenander 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: 7722299Abstract: A twist drill for metal cutting, made of cemented carbide, including helical chip flutes extending through an entire body of the twist drill or a part thereof, a shank to be secured to a rotary spindle, two main cutting edges, and two leading edges. The leading edges have a larger edge radius than that of the cutting edges.Type: GrantFiled: May 26, 2006Date of Patent: May 25, 2010Assignee: Sandvik Intellectual Property ABInventor: Anders Lenander
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Publication number: 20080166527Abstract: The present invention relates to a coated cutting insert with excellent toughness properties particularly useful for toughness demanding short hole drilling in general steel materials and a method of making the same. The inserts comprise a substrate and a coating. The substrate comprises WC, from about 8 to about 11 wt-% Co and from about 0.2 to about 0.5 wt-% Cr with an average WC-grain size of from about 0.5 to about 1.5 ?m and a CW-ratio of from about 0.80 to about 0.90. The coating comprises a first (innermost) layer of TiCxNyOz with a thickness less than about 1.5 ?m, a layer of TiCxNyOz with a thickness of from about 1 to about 8 ?m with columnar grains, a layer of fine-grained grain ?-Al2O3 with a thickness of from about 0.5 to about 5 ?m and a further layer less than about 1 ?m thick of TiCxNyOz whereby at the rake face the outermost TiCxNyOz-layer and Al2O3-layer are fully or partly missing.Type: ApplicationFiled: December 20, 2007Publication date: July 10, 2008Inventors: Anders Lenander, Jan Kjellgren, Torbjorn Agren, Stefan Reinebrandt, Joakim Andersson, Robert Granstrom
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Publication number: 20070009336Abstract: A twist drill for metal cutting, made of cemented carbide, including helical chip flutes extending through an entire body of the twist drill or a part thereof, a shank to be secured to a rotary spindle, two main cutting edges, and two leading edges. The leading edges have a larger edge radius than that of the cutting edges.Type: ApplicationFiled: May 26, 2006Publication date: January 11, 2007Inventor: Anders Lenander
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Patent number: 6699526Abstract: A method of making a cutting insert includes forming a powder mixture containing WC, 2-10 wt % Co, 4-12 wt % cubic carbides, adding N in an amount of 0.9-1.7 % of the weight of the cubic carbides, mixing the powder with a pressing agent, milling and spray drying the mixture, compacting and sintering the material at 1300-1500 in an atmosphere of sintering gas 40-60 mbar, applying post-sintering treatment, and applying a coating by CVD or MTCVD.Type: GrantFiled: October 11, 2001Date of Patent: March 2, 2004Assignee: Sandvik ABInventors: Lisa Palmqvist, Mikael Lindholm, Anders Lenander, Björn Lungberg, Michael Thysell
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Patent number: 6616970Abstract: Methods of making a coated cemented carbide body include: forming a powder mixture having WC, 5-12 wt % Co, 3-11% cubic carbides of Ta and Ti with a ratio of Ta/Ti is 1.0-4.0; adding N in an amount of 0.6-2.0% of the weight of Ta and Ti; milling and spray-drying the mixture to form a powder; compacting and sintering the powder at a temperature of 1300-1500° C., in a controlled atmosphere of about 50 mbar followed by cooling, whereby a body having a binder phase enriched and essentially gamma-phase free surface zone of 5-50 &mgr;m in thickness is obtained; applying a pre-coating treatment to the body; and appling a hard, wear-resistant coating to the body.Type: GrantFiled: November 19, 2001Date of Patent: September 9, 2003Assignee: Sandvik ABInventors: Anders Lenander, Mikael Lindholm
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Publication number: 20020051871Abstract: The present invention relates to a coated cemented carbide insert for turning of steel, like low alloyed steels, carbon steels and tough hardened steels at high cutting speeds. The cemented carbide consists of WC, 2-10 wt. % Co and 4-12 wt. % of cubic carbides of metals from groups 4, 5 or 6 of the periodic table, preferably Ti, Ta and Nb. The Co-binder phase is highly alloyed with W with a CW-ratio of 0.75-0.90. The insert has a binder phase enriched and essentially cubic carbide free surface zone A of a thickness of <20 &mgr;m and along a line C essentially bisecting the edge, in the direction from the edge to the center of the insert, a binder phase content increases essentially monotonously until it reaches the bulk composition. The binder phase content at the edge is 0.65-0.75 times the binder phase content by volume of the bulk and the depth of the binder phase depletion is 100-300 &mgr;m, preferably 150-250 &mgr;m.Type: ApplicationFiled: October 11, 2001Publication date: May 2, 2002Inventors: Lisa Palmqvist, Mikael Lindholm, Anders Lenander, Bjorn Ljungberg, Michael Thysell
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Publication number: 20020050102Abstract: The present invention relates to a cutting tool insert and its methods of manufacture for machining of steel comprising a cemented carbide body and a coatings. The cemented carbide body includes WC, 5-12 wt-% Co and 3-11 wt-% of cubic carbides of metals Ta and Ti. The amount of Nb is below 0.1 wt-% and the ratio Ta/Ti is 1.0-4.0. The Co-binder phase is highly alloyed with W with a CW-ratio of 0.75-0.95 and, finally, the cemented carbide body has a binder phase enriched and essentially gamma phase free surface zone of a thickness of 5-50 &mgr;m.Type: ApplicationFiled: November 19, 2001Publication date: May 2, 2002Inventors: Anders Lenander, Mikael Lindholm
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Patent number: 6344264Abstract: The present invention relates to a cutting tool insert and its methods of manufacture for machining of steel comprising a cemented carbide body and a coatings. The cemented carbide body includes WC, 5-12 wt-% Co and 3-11 wt-% of cubic carbides of metals Ta and Ti. The amount of Nb is below 0.1 wt-% and the ratio Ta/Ti is 1.0-4.0. The Co-binder phase is highly alloyed with W with a CW-ratio of 0.75-0.95 and, finally, the cemented carbide body has a binder phase enriched and essentially gamma phase free surface zone of a thickness of 5-50 &mgr;m.Type: GrantFiled: April 7, 2000Date of Patent: February 5, 2002Assignee: Sandvik A.B.Inventors: Anders Lenander, Mikael Lindholm
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Patent number: 6333100Abstract: The present invention relates to a coated cemented carbide insert for turning of steel, like low alloyed steels, carbon steels and tough hardened steels at high cutting speeds. The cemented carbide consists of WC, 2-10 wt. % Co and 4-12 wt. % of cubic carbides of metals from groups 4, 5 or 6 of the periodic table, preferably Ti, Ta and Nb. The Co-binder phase is highly alloyed with W with a CW-ratio of 0.75-0.90. The insert has a binder phase enriched and essentially cubic carbide free surface zone A of a thickness of <20 &mgr;m and along a line C essentially bisecting the edge, in the direction from the edge to the centre of the insert, a binder phase content increases essentially monotonously until it reaches the bulk composition. The binder phase content at the edge is 0.65-0.75 times the binder phase content by volume of the bulk and the depth of the binder phase depletion is 100-300 &mgr;m, preferably 150-250 &mgr;m.Type: GrantFiled: February 2, 2000Date of Patent: December 25, 2001Assignee: Sandvik ABInventors: Lisa Palmqvist, Mikael Lindholm, Anders Lenander, Björn Ljungberg, Michael Thysell
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Patent number: 6326093Abstract: The present invention relates to a coated cemented carbide cutting tool particularly for turning applications with high toughness demands, of stainless steels of different compositions and microstructures, and of low and medium alloyed non-stainless steels. The cemented carbide is WC−Co based with a composition of 9−12 wt % Co, 0.2−2.0 wt % cubic carbides from elements from group IVa, Va or VIa of the periodic table and balance WC with a grain size of 1.5−2 &mgr;m. The binder phase is W-alloyed with a CW-ratio in the range of 0.77−0.95. The coating includes a multilayered structure of the composition (TixA11−x,)N in which x varies repeatedly between the two ranges 0.45<x<0.55 and 0.70<x<0.80, adding up to a total thickness of 2-9 &mgr;m.Type: GrantFiled: September 6, 2000Date of Patent: December 4, 2001Assignee: Sandvik ABInventors: Mikael Lindholm, Anders Lenander, Per Lindskog
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Patent number: 5945207Abstract: There is disclosed a coated cutting insert particularly useful for cutting in cast iron materials. The insert is characterized by a straight WC-Co cemented carbide body having a highly W-alloyed Co binder phase, a well-defined surface content of Co and a coating including an innermost layer of TiC.sub.x N.sub.y O.sub.z with columnar grains, a layer of a fine-grained, textured Al.sub.2 O.sub.3 layer and a top layer of TiC.sub.x N.sub.y O.sub.z that has been removed along the cutting edge line.Type: GrantFiled: September 5, 1997Date of Patent: August 31, 1999Assignee: Sandvik ABInventors: .ANG.sa Kutscher, Kenneth Westergren, Bjorn Ljungberg, Anders Lenander
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Patent number: 5861210Abstract: There is provided a tool at least partly coated with at least two refractory layers of which one of the said layers is a fine-grained .alpha.-Al.sub.2 O.sub.3 -layer which is the top layer along the cutting edge-line and the other a TiC.sub.x N.sub.y O.sub.z - or a ZrC.sub.x N.sub.y -layer being the top layer on the clearance face. The coated tool exhibits excellent flank and crater wear and high resistance to flaking, particularly when used for machining of low carbon steel and stainless steel. Used cutting edges can easily be identified by the naked eye.Type: GrantFiled: July 5, 1995Date of Patent: January 19, 1999Assignee: Sandvik ABInventors: Anders Lenander, Bjorn Ijungberg
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Patent number: 5800868Abstract: The present invention relates to CVD-coated cemented carbide tool used for chip forming machining. More particularly, it relates to a coating with an intermediate layer acting as a diffusion barrier thus influencing the coating structure and coating adhesion of the following layer.Type: GrantFiled: June 12, 1997Date of Patent: September 1, 1998Assignee: Sandvik ABInventors: Anders Lenander, Leif kesson
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Patent number: RE39814Abstract: The present invention relates to a coated cemented carbide cutting tool particularly for turning applications with high toughness demands, of stainless steels of different compositions and microstructures, and of low and medium alloyed non-stainless steels. The cemented carbide is WC-Co based with a composition of 9-12 wt % Co, 0.2-2.0 wt % cubic carbides from elements from group IVa, Va or VIa of the periodic table and balance WC with a grain size of 1.5-2 ?m. The binder phase is W-alloyed with a CW-ratio in the range of 0.77-0.95. The coating includes a multilayered structure of the composition (TixAl1?x,)N in which x varies repeatedly between the two ranges 0.45<x<0.55 and 0.70<x<0.80, adding up to a total thickness of 2-9 ?m.Type: GrantFiled: June 8, 2006Date of Patent: September 4, 2007Assignee: Sandvik Intellectual Property ABInventors: Mikael Lindholm, Anders Lenander, Per Lindskog
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Patent number: RE39893Abstract: The present invention relates to a cutting tool insert and its methods of manufacture for machining of steel comprising a cemented carbide body and a coatings. The cemented carbide body includes WC, 5-12 wt-% Co and 3-11 wt-% of cubic carbides of metals Ta and Ti. The amount of Nb is below 0.1 wt-% and the ratio Ta/Ti is 1.0-4.0. The Co-binder phase is highly alloyed with W with a CW-ratio of 0.75-0.95 and, finally, the cemented carbide body has a binder phase enriched and essentially gamma phase free surface zone of a thickness of 5-50 ?m.Type: GrantFiled: June 8, 2006Date of Patent: October 23, 2007Assignee: Sandvik Intellectual Property ABInventors: Anders Lenander, Mikael Lindholm
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Patent number: RE39894Abstract: The present invention relates to a coated cemented carbide insert for turning of steel, like low alloyed steels, carbon steels and tough hardened steels at high cutting speeds. The cemented carbide consists of WC, 2-10 wt. % Co and 4-12 wt. % of cubic carbides of metals from groups 4, 5 or 6 of the periodic table, preferably Ti, Ta and Nb. The Co-binder phase is highly alloyed with W with a CW-ratio of 0.75-0.90. The insert has a binder phase enriched and essentially cubic carbide free surface zone A of a thickness of <20 ?m and along a line C essentially bisecting the edge, in the direction from the edge to the centre of the insert, a binder phase content increases essentially monotonously until it reaches the bulk composition. The binder phase content at the edge is 0.65-0.75 times the binder phase content by volume of the bulk and the depth of the binder phase depletion is 100-300 ?m, preferably 150-250 ?m. The insert is coated with 3-12 ?m columnar TiCN-layer followed by a 2-12 ?m thick Al2O3-layer.Type: GrantFiled: June 9, 2006Date of Patent: October 23, 2007Assignee: Sandvik Intellectual Property ABInventors: Lisa Palmqvist, Mikael Lindholm, Anders Lenander, Bjorn Ljungberg, Michael Thysell
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Patent number: RE40005Abstract: There is disclosed a coated cutting insert particularly useful for cutting in cast iron materials. The insert is characterized by a straight WC-Co cemented carbide body having a highly W-alloyed Co binder phase, a well-defined surface content of Co and a coating including an innermost layer of TiCxNyOz with columnar grains, a layer of a fine-grained, textured Al2O3 layer and a top layer of TiCxNyOz that has been removed along the cutting edge line.Type: GrantFiled: June 9, 2006Date of Patent: January 15, 2008Assignee: Sandvik Intellectual Property ABInventors: Asa Kutscher, Kenneth Westergren, Björn Ljungberg, Anders Lenander
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Patent number: RE40962Abstract: Methods of making a coated cemented carbide body include: forming a powder mixture having WC, 5-12 wt % Co, 3-11% cubic carbides of Ta and Ti with a ratio of Ta/Ti is 1.0-4.0; adding N in an amount of 0.6-2.0% of the weight of Ta and Ti; milling and spray-drying the mixture to form a powder; compacting and sintering the powder at a temperature of 1300-1500° C., in a controlled atmosphere of about 50 mbar followed by cooling, whereby a body having a binder phase enriched and essentially gamma-phase free surface zone of 5-50 ?m in thickness is obtained; applying a pre-coating treatment to the body; and appling a hard, wear-resistant coating to the body.Type: GrantFiled: July 10, 2006Date of Patent: November 10, 2009Assignee: Sandvik Intellectual Property AktiebolagInventors: Anders Lenander, Mikael Lindholm
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Patent number: RE41248Abstract: A method of making a cutting insert includes forming a powder mixture containing WC, 2-10 wt % Co, 4-12 wt % cubic carbides, adding N in an amount of 0.9-1.7% of the weight of the cubic carbides, mixing the powder with a pressing agent, milling and spray drying the mixture, compacting and sintering the material at 1300-1500 in an atmosphere of sintering gas 40-60 mbar, applying post-sintering treatment, and applying a coating by CVD or MTCVD.Type: GrantFiled: July 12, 2006Date of Patent: April 20, 2010Assignee: Sanvik Intellectual Property AktiebolagInventors: Lisa Palmqvist, Mikael Lindholm, Anders Lenander, Bjorn Ljungberg, Michael Thysell
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Patent number: RE41972Abstract: There is provided a tool at least partly coated with at least two refractory layers of which one of the said layers is a fine-grained ?-Al2O3-layer which is the top layer along the cutting edge-line and the other a TiCxNyOz- or a ZrCxNy-layer being the top layer on the clearance face. The coated tool exhibits excellent flank and crater wear and high resistance to flaking, particularly when used for machining of low carbon steel and stainless steel. Used cutting edges can easily be identified by the naked eye.Type: GrantFiled: January 16, 2007Date of Patent: November 30, 2010Assignee: Sandvik Intellectual Property ABInventors: Anders Lenander, Bjorn Ljungberg