Patents Assigned to Sandvik
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Patent number: 7799443Abstract: A cutting tool insert has a cermet body with a Co and/or Ni binder phase and a coating deposited as monolayer or as multiple and/or alternating layers of carbide, nitride or oxide. The coating has a thickness of 21-50 ?m, when the inserts have a flat rake face, without or with simple chipbreakers and a Co binder phase, or has a thickness of 10-50 ?m, when the inserts have a rake face land with a width of 100-300 ?m with an angle of 10-25° to the rake face and a Co and/or Ni binder phase. The cermet body has more than 50 vol. % Ti-based carbonitride and less than 15 wt % and more than 6 wt % Co and/or Ni binder phase and a hardness of >1650 HV3. The disclosure also relates to the use of the coated cutting tool insert for the machining of cast iron work pieces.Type: GrantFiled: February 28, 2007Date of Patent: September 21, 2010Assignee: Sandvik Intellectual Property ABInventors: Marian Mikus, Kenneth Westergren, Leif Åkesson, Per Mårtensson
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Patent number: 7798247Abstract: A method for sucking dust in connection with a rock drilling rig, and a rock drilling rig. The rock drilling rig (1) comprises a dust collection system provided with a suction device (11) to produce suction for sucking dust from a drill hole (8) through a first suction channel (12). The rock drilling rig further comprises a second suction channel (17) allowing the suction effect of the dust collection system to be utilized for sucking dust from a location other than the drill hole, for example from the control cabin (15). Exhaust suction is controlled by means of a control unit (26, 48).Type: GrantFiled: November 9, 2005Date of Patent: September 21, 2010Assignee: Sandvik Mining and Construction OyInventors: Pasi Julkunen, Tapani Sormunen, Juha Koivula, Seppo Renko
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Patent number: 7799413Abstract: A CVD-coated cutting tool insert with improved toughness properties having the ability to withstand high temperatures without sacrificing edge line security is disclosed. The insert coating comprises a TiCxNy-layer with a low tensile stress level of 50-500 MPa and an ?-Al2O3-layer with a high surface smoothness with a mean Ra<0.12 ?m as measured by AFM-technique, obtained by subjecting the coating to an intensive wet blasting operation.Type: GrantFiled: June 8, 2007Date of Patent: September 21, 2010Assignee: Sandvik Intellectual Property ABInventors: Gunilla Andersson, Anders Karlsson, Katarina Dahl, Jan Kjellgren, Peter Littecke
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Patent number: 7794182Abstract: An indexable milling insert includes opposite top and bottom sides between which a peripheral clearance surface extends, and two opposite cutting edges formed in the transition between the top side and the clearance surface. Each of the cutting edges includes a substantially straight portion connected with a straight section of the clearance surface, and further includes a curved portion connected with a convexly arched section of the clearance surface. A coupling including one or more male- and/or female-like engagement members is located along said clearance surface. Furthermore, the milling insert may be used with a shim plate for attachment to a milling tool.Type: GrantFiled: January 17, 2008Date of Patent: September 14, 2010Assignee: Sandvik Intellectual Property ABInventors: Ralf Lehto, Lars-Gunnar Wallström, Göran Pantzar, Per Blomstedt
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Patent number: 7794830Abstract: The present invention relates to a cutting tool insert for turning consisting of a cemented carbide substrate and a coating. The cemented carbide substrate comprises WC, binder phase, and vanadium containing cubic carbide phase with a binder phase enriched surface zone essentially free of cubic carbide phase. The thermal properties of the vanadium-containing cubic phase, has turned out to give excellent resistance to thermal cracking of the insert.Type: GrantFiled: June 27, 2006Date of Patent: September 14, 2010Assignee: Sandvik Intellectual Property ABInventors: Alexandra Kusoffsky, Susanne Norgren
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Publication number: 20100215446Abstract: A cutting or milling insert for rotatable tool for chip removing machining and of the type that comprises a cutting edge in a transition between a front chip surface and a clearance surface extending rearward from the same. Remotely behind the first-mentioned cutting edge, a second cutting edge is formed in a transition between, on one hand, a second chip surface behind the first clearance surface, and, on the other hand, a trailing second clearance surface. The spacing between opposite sections of the front cutting edge is greater than the corresponding spacing between opposite sections of the second or rear cutting edge, the cutting edge angle (?) of at least the front cutting edge being acute. A rotatable cutting tool, which is equipped with the cutting or milling insert is also provided.Type: ApplicationFiled: February 18, 2010Publication date: August 26, 2010Applicant: SANDVIK INTELLECTUAL PROPERTY ABInventor: Gustaf WANDEBÄCK
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Patent number: 7780381Abstract: A slot milling cutter, which comprises a cutting head as well as a fastener integrated with the cutting head, which fastener is intended to be received in a tool coupling, the cutting head being provided with at least two insert seats, and cutting inserts being mounted in the insert seats. The invention also relates to a cutting insert separately.Type: GrantFiled: February 17, 2005Date of Patent: August 24, 2010Assignee: Sandvik Intellectual Property ABInventors: Sture Sjöö, Helena Olsson, Per Forssell
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Patent number: 7781655Abstract: The present disclosure relates to a string for a musical instrument comprising duplex stainless steel. The string has high mechanical strength and a high resistance to relaxation. Also, the corrosion resistance is high. Therefore, the string according to the present disclosure has a long service life.Type: GrantFiled: November 15, 2006Date of Patent: August 24, 2010Assignee: Sandvik Intellectual Property ABInventors: Sina Vosough, Anders Söderman
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Publication number: 20100209202Abstract: The present invention concerns a method of milling ball races which are of an approximately elliptical profile which has a first semi-axis extending substantially perpendicularly to the base of the ball race and a second semi-axis extending perpendicularly to the first semi-axis and perpendicularly to the longitudinal direction of the ball race, wherein a side milling cutter is used to produce the ball race, the peripheral cutting edges of which produce the elliptical profile of the ball race, wherein the cutting edges of the side milling cutter in a section containing the axis of the milling cutter are also of an elliptical profile whose first semi-axis extends perpendicularly to the milling cutter axis and whose second semi-axis extends parallel to the milling cutter axis.Type: ApplicationFiled: July 2, 2008Publication date: August 19, 2010Applicant: Sandvik Intellectual Property ABInventor: Stefan Scherbarth
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Publication number: 20100206529Abstract: The invention relates to a self-fluxing brazing piece. The piece comprises a composite material comprising at least one inorganic material distributed in a metal or metal alloy matrix, the inorganic material forming a flux during brazing to promote the formation of a thermally induced metallic bond. The matrix may be an aluminium silicon brazing alloy and the inorganic material may be a potassium-fluoro-aluminate flux. The piece is made by spray forming.Type: ApplicationFiled: March 14, 2008Publication date: August 19, 2010Applicants: SANDVIK OSPREY LIMITED, SAPA HEAT TRANSFER ABInventors: Andrew Josef Widawski Ogilvy, Douglas Kenneth Hawksworth, Elisabeth Abom
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Patent number: 7777108Abstract: A string for musical instrument is disclosed, the string formed from precipitation hardening stainless steel, where Ti has been added to improve the precipitation hardening properties. The string has a superior resistance to relaxation and is corrosion resistant, thus improving its tuning stability and maintaining its tone quality, thus prolonging its service life.Type: GrantFiled: November 15, 2006Date of Patent: August 17, 2010Assignee: Sandvik Intellectual Property ABInventors: Sina Vosough, Goran Berglund
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Publication number: 20100200294Abstract: The invention relates to a rock drill apparatus comprising a feed beam (1) and a rock drill machine moving to-and-fro therealong, a pressure fluid driven feed cylinder (4) which, by means of a flexible transfer element, is connected so as to transfer the rock drill machine in the longitudinal direction of the cylinder, the feed beam (1) being provided with a space in its longitudinal direction wherein the feed cylinder (4) is installed. The rock drill apparatus comprises a measuring device comprising a measuring wheel (7a) for a measuring line (9), the measuring wheel (7a) being connected to rotate a measuring sensor of the measuring device.Type: ApplicationFiled: July 4, 2008Publication date: August 12, 2010Applicant: Sandvik Mining and Construction OyInventor: Juha Piipponen
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Publication number: 20100192345Abstract: A hand tool which features a self-aligning recessed seating feature for easy installation of retaining clips onto the groove of the shank of mining and trenching picks. The location and orientation toward the first end of the body of the tool of the recessed seating feature allows for easy installation from either the left or right side of the holder. The tool includes two prongs located at the same end of the tool as the recessed seating feature. The end surfaces of the two prongs correspond in shape and/or orientation to the contact surfaces of a retaining clip to improve removal of retaining clips from the groove of the shank of mining and trenching picks.Type: ApplicationFiled: January 4, 2010Publication date: August 5, 2010Applicant: Sandvik Intellectual Property ABInventors: Kenneth Monyak, Joseph Fader
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Publication number: 20100194067Abstract: In a steering arrangement for vehicles, in particular underground transport vehicles, including at least four steerable wheels (2), wherein, during cornering, a respective curve-inner wheel is turned more sharply than the respective curve-outer wheel, at least two wheels (2) located opposite each other in respect to the longitudinal center plane of the vehicle are coupled with each other via angle levers (21) and a tie rod (22) connected to the angle levers (21). Curve-inner or curve-outer wheels consecutively arranged in the longitudinal direction of the vehicle are coupled to common pivotal movement via a gear. The angle levers (21), via a coupling rod (24), are each connected with a steering lever (13) each connected with a steerable wheel (2) via a steering rod (10).Type: ApplicationFiled: August 25, 2008Publication date: August 5, 2010Applicant: Sandvik Mining and Construction G.m.b.H.Inventors: Eduard Krivec, Thomas Gross
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Publication number: 20100194176Abstract: A non-rotating mining cutter pick has a shank portion with a non-circular cross-section, a head portion including a tip region distal from the shank portion, a shoulder portion separating the shank portion from the head portion, and a cutting insert mounted at a front end of the tip region. The cutting insert includes a body formed of tungsten carbide and an element formed of a superhard material, such as PCD or other material having a prescribed knoop hardness. At least a portion of a first surface of the element is exposed on a cutting surface of the cutting insert, which improves wear properties of the mining cutter pick. The element is fused to the body of the cutting insert, preferably in a high pressure-high temperature (HPHT) process. A method of manufacture and a cutting machine incorporating the non-rotating mining cutter pick on the rotatable element are also disclosed.Type: ApplicationFiled: December 29, 2009Publication date: August 5, 2010Applicants: Diamond Innovations, Inc., Sandvik Intellectual Property ABInventors: John W. LUCEK, Adrienne OLWERT, Kenneth MONYAK, Bjorn CLAESSON
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Publication number: 20100193504Abstract: An electrical heating element for vertical installation, includes vertically suspended electrical resistance elements for heating furnaces in industrial operation, each element having conductive legs, where along the length of the element there are placed ceramic disks provided with holes, through which holes the relevant legs of the element pass, where the ceramic disks are arranged between ceramic tubes and where an upper metallic central rod is positioned within the ceramic tubes, which central rod supports the element and where the element is surrounded by a radiative tube. There are a number of upper ceramic tubes outside of the upper central rod, with intermediate ceramic disks. The central rod extends a certain distance down into the radiative tube. A number of lower ceramic tubes with intermediate ceramic disks are positioned outside of a lower central rod.Type: ApplicationFiled: May 24, 2006Publication date: August 5, 2010Applicant: SANDVIK INTELLECTUAL PROPERTY ABInventor: Thomas Lewin
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Patent number: 7767319Abstract: The present invention relates to a coated cemented carbide milling insert for either wet or dry machining of cast iron such as nodular cast iron (NCI), grey cast iron (GCI), austempered ductile iron (ADI) and compacted graphite iron (CGI) where a high wear resistance and an excellent resistance against thermo cracks are required comprising: a substrate comprising from about 5 to about 7 wt-% Co, from about 140 to about 250 ppm Ti+Ta and balance WC with a weight ratio Ti/Ta of from about 0.8 to about 1.3 and a PVD-layer consisting of AlxTi1?xN, with x=from about 0.50 to about 0.70 and with a thickness of from about 1 to about 10 ?m. The invention also relates to a method for making cutting tool inserts and their use.Type: GrantFiled: May 23, 2007Date of Patent: August 3, 2010Assignee: Sandvik Intellectual Property ABInventors: Leif Åkesson, Toril Myrtveit, Ibrahim Sadik
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Patent number: RE41646Abstract: As there is disclosed a cemented carbide body comprising WC with an average grain size of <10 ?m in a binder phase. In the cemented carbide body the WC grains can be classified in at least two groups in which a group of smaller grains has a maximum grain size amax and a group of larger grains has a minimum grain size bmin and each group contains at least 10 % of the total amount of WC grains. According to the invention bmin?amax>0.5 ?m and the difference in grain size within each group is >1 ?m.Type: GrantFiled: July 8, 1997Date of Patent: September 7, 2010Assignee: Sandvik Intellectual Property AktiebolagInventors: Ake Ostlund, Mats Waldenstrom, Ove Alm
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Patent number: RE41647Abstract: The present invention relates to a method of making a cemented carbide body with a bimodal grain size distribution by powder metallurgical methods including wet mixing, without milling, of WC-powders with different grain size distributions with binder metal and pressing agent, drying, pressing and sintering. The grains of the WC-powders are classified in at least two groups, a group of smaller grains and a group of larger grains. According to the method of the present invention, the grains of the group of smaller grains are precoated with a growth inhibitor with or without binder metal.Type: GrantFiled: July 12, 2006Date of Patent: September 7, 2010Assignee: Sandvik Intellectual Property AktiebolagInventor: Mats Waldenstrom
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Patent number: D624097Type: GrantFiled: December 17, 2009Date of Patent: September 21, 2010Assignee: Sandvik Intellectual Property ABInventors: Matthew Kenny, Steven Weaver
