Patents by Inventor Thomas FROBOSE
Thomas FROBOSE 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: 10597743Abstract: A process for producing a high-grade steel tube includes the steps of: providing a tubular blank of an austenitic high-grade steel, wherein the high-grade steel comprises in weight % no more than 0.02% carbon, no more than 1.0% manganese, no more than 0.03% phosphor, no more than 0.015% sulfur, no more than 0.8% silicon, no more than 17.5% t to 18.5% nickel, no more than 19.5% to 20.5% chromium, no more than 6.0% to 6.5% molybdenum, no more than 0.18% to 0.25% nitrogen, no more than 0.5% to 1.0% copper, and a remainder of iron and unavoidable impurities; and cold-forming the blank into a tube.Type: GrantFiled: July 16, 2015Date of Patent: March 24, 2020Assignee: Sandvik Materials Technology Deutschland GmbHInventors: Jonas Guhrs, Christofer Hedvall, Thomas Frobose, Udo Rauffmann
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Publication number: 20200025339Abstract: Sensor for high-pressure line and method for manufacturing thereof. The sensor detects parameters or properties of fluid conducted in a high-pressure line while maintaining the high pressure of the fluid. The sensor includes an inner tube extending concentrically in the outer tube that together form a tube and at least one groove which extends in the inner surface of the outer tube or in the outer surface of the inner tube in a longitudinal direction, at least one signal line arranged in the groove, and at least one pick-up element connected to the signal line and arranged at least in the groove or in at least one recess which is provided at least in the outer surface of the inner tube or in the inner surface of the outer tube in addition to the at least one groove. The outer tube is in frictional connection with the inner tube.Type: ApplicationFiled: December 16, 2016Publication date: January 23, 2020Applicant: Sandvik Materials Technology Deutschland GmbHInventors: Udo RAUFFMANN, Christofer HEDVALL, Thomas FROBÖSE
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Patent number: 10501820Abstract: A method for manufacturing a strand from a stainless steel by cold forming a billet into the cold-hardened strand and subsequently annealing the strand is provided. The method allows stainless steel strands to be produced, which have both a high tensile strength, as well as a high degree of elongation. The strand is heated to a temperature ranging from 400° C. to 460° C. while the strand is being annealed, and the cold-hardened strand is surrounded by a protective gas atmosphere during the heating process.Type: GrantFiled: February 15, 2016Date of Patent: December 10, 2019Assignee: Sandvik Materials Technology Deutschland GmbHInventors: Thomas Frobose, Christofer Hedvall, Udo Rauffmann
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Patent number: 10480860Abstract: A conveyor furnace includes a muffle having an inlet opening and an outlet opening, with a heating device for heating a volume delimited by the muffle, and a closed conveyor belt manufactured at least partially from metal. The conveyor furnace includes another heating device which is arranged so that, during the operation of the conveyor furnace, the heating device heats a section of the conveyor belt extending outside of the muffle.Type: GrantFiled: April 30, 2014Date of Patent: November 19, 2019Assignee: Sandvik Materials Technology Deutschland GmbHInventor: Thomas Frobose
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Patent number: 10400302Abstract: An annealing furnace for annealing a strand of steel. The annealing furnace including a first heating apparatus for heating the strand during operation of the annealing furnace. A transport device advances the strand in a direction of transport through the annealing furnace during operation of the annealing furnace. The annealing furnace also includes a first cooling device for cooling the outer surface of the strand with a gas guide in the direction of transport behind the first heater, wherein the gas guide is arranged in such a manner that a gas flows along the outer surface of the strand during operation of the annealing furnace for cooling the strand.Type: GrantFiled: December 10, 2014Date of Patent: September 3, 2019Assignee: Sandvik Materials Technology Deutschland GmbHInventors: Thomas Frobose, Christofer Hedvall
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Publication number: 20190193131Abstract: The present invention relates to a method for forming a hollow 26 of a ferritic FeCrAI alloy into a tube 2. While tubes made of powder metallurgical, dispersion hardened, ferritic FeCrAI alloys are commercially available, hollows made of FeCrAI alloys so far can hardly be formed into tubes of small dimensions. The major reason for the problems in forming hollows of a ferritic FeCrAI alloy into a finished product is that FeCrAI alloys are brittle. It is therefore an aspect of the present invention to provide a tube 2 made of a ferritic FeCrAI alloy having arbitrary small dimensions. Furthermore, it is an aspect of the present invention to provide a machine 1 and a method for forming a tubular hollow 26 into a finished tube 2 of a ferritic FeCrAI alloy. At least one of the above aspects is addressed by a method for forming a hollow into a tube 2 comprising the steps providing the hollow 26 of a ferritic FeCrAI alloy, heating the hollow 26 to a temperature in a range from 90° C. to 150° C.Type: ApplicationFiled: June 22, 2017Publication date: June 27, 2019Applicant: Sandvik Materials Technology Deutschland GmbHInventors: Thomas FROBÖSE, Fernando RAVE, Jonas GYNNERSTEDT
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Publication number: 20190160501Abstract: A cold pilger rolling mill including a front mandrel thrust block that has a distance of at least 30 m from a feed chuck, measured with the feed clamping carriage at the rear reversal point thereof. The distance is measured between the rear (in the feed direction of the hollow) end of the chuck of the front mandrel thrust block and the front (in the feed direction of the hollow) end of the feed chuck of the feed clamping carriage at the rear reversal point thereof.Type: ApplicationFiled: March 28, 2017Publication date: May 30, 2019Applicant: Sandvik Materials Technology Deutschland GmbHInventors: Christofer HEDVALL, Udo RAUFFMANN, Thomas FROBÖSE
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Publication number: 20190151916Abstract: Cold pilger rolling mill for cold forming a hollow into a strain hardened tube with a roll stand with rollers mounted pivotably thereon. Efficient milling of long hollows is enabled without reducing the quality of the manufactured tubes. The cold pilger rolling mill has an unwinding device, wherein the unwinding device is arranged and in the feed direction of the hollow is located in front of the front mandrel thrust block such that at the unwinding device a spindle being rotatable around an axis being perpendicular to the feed direction of the hollow with the hollow wound thereon is receivable and in an operation of the cold pilger rolling mill the hollow is unwindable and feedable between the chuck of the front mandrel thrust block and the mandrel bar into the feed clamping sledge and the roll stand.Type: ApplicationFiled: March 28, 2017Publication date: May 23, 2019Applicant: Sandvik Materials Technology Deutschland GmbHInventors: Christofer HEDVALL, Udo RAUFFMANN, Thomas FROBÖSE
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Patent number: 10254047Abstract: A furnace muffle for an annealing furnace, the furnace muffle including a base body arranged to delimit a volume to be heated, at least one actuator connected to the base body in such a manner that the actuator, during the operation of the furnace muffle, can exert a force on the base body, at least one sensor arranged to detect a force exerted by the base body during the heating or cooling and/or a change in a length of the base body during the heating or cooling, and a control device connected to the actuator and the sensor, which is arranged so that during the operation of the furnace muffle, it controls the force exerted on the base body as a function of the force or change in length detected by the sensor.Type: GrantFiled: May 15, 2014Date of Patent: April 9, 2019Assignee: SANDVIK MATERIALS TECHNOLOGY DEUTSCHLAND GMBHInventor: Thomas Frobose
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Publication number: 20190084020Abstract: Pilger rolling mill for working a hollow into a tube has a first roll stand mounted linearly moveable in a direction of motion. Translational motion of the roll stand causes rotational motion of the drive gear due to the cogging of the drive gear with the gear rack and, hence, also rotational motion of the roller arranged on the shaft of the drive gear and rotational motion of the other one of the two rollers in the opposite direction. Roll stand is connected with a crank drive and rotational motion of a motor drive is transformed into an oscillating translational motion of the roll stand by a connecting rod. Gear rack holder allows adjustment of the pilger rolling mill with respect to tube diameters of finished rolled tubes by arranging the first roll stand exchangeable by a second roll stand with a second dimension being different from the first dimension.Type: ApplicationFiled: December 20, 2016Publication date: March 21, 2019Applicant: Sandvik Materials Technology Deutschland GmbHInventors: Thomas FROBÖSE, Christofer HEDVALL
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Patent number: 10226802Abstract: A cold pilger rolling mill for forming a tube shell to a tube includes a feed clamping carriage for receiving the tube shell and with a drive that is arranged to move the feed clamping carriage such that during the operation of the cold pilger rolling mill the tube shell moves step-by-step in the direction of the tool. A control and a sensor detect a measure of a force exerted during the operation of the cold pilger rolling mill by the tool onto the tube shell, and wherein the control is connected to the drive and the sensor. The control is arranged to regulate, during the operation of the cold pilger rolling mill, the step length per advance step with which the drive moves the feed clamping carriage to the tool as a function of the measure for the force, which measure is detected by the sensor.Type: GrantFiled: August 14, 2014Date of Patent: March 12, 2019Assignee: Sandvik Materials Technology Deutschland GmbHInventor: Thomas Frobose
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Patent number: 10155257Abstract: The state of the art discloses cold rolling mills comprising a roll stand, at least one roll rotatably mounted to the roll stand, a feed clamping saddle for feeding a blank, and a first drive for the feed clamping saddle. Those cold rolling mills have ball spindle drives with a high rate of wear as the drive for the feed clamping saddle. In comparison the object of the present invention is to provide a cold rolling mill whose drive for the feed clamping saddle involves no or only very slight wear and which in addition permits a slow movement of the feed clamping saddle. According to the invention that object is attained by a cold rolling mill which has a direct electromechanical linear drive for the feed clamping saddle.Type: GrantFiled: May 5, 2010Date of Patent: December 18, 2018Assignee: Sandvik Materials Technology Deutschland GmbHInventor: Thomas Froböse
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Publication number: 20180356009Abstract: Method for manufacturing a tube of metal in which sensors are attached to tubes, which register and signal a damage of the tube. It is detrimental that protection of the sensors at these tubes against environmental influences is complex. In contrast, it is an object of the present disclosure to provide a method for manufacturing a tube, in which the signal line can be protectively mounted. To solve this object, a method for manufacturing a tube of metal is suggested with an outer tube and an inner tube, wherein a groove is drawn in an inner surface of the outer tube or in an outer surface of the inner tube and subsequently the inner tube and the outer tube are drawn together through a drawing die, wherein the inner dimension of the outer tube is reduced such that after the drawing the outer tube is force-fitted onto the inner tube.Type: ApplicationFiled: November 16, 2016Publication date: December 13, 2018Applicant: Sandvik Materials Technology Deutschland GmbHInventors: Jonas ROSÈN, Christofer HEDVALL, Udo RAUFFMANN, Thomas FROBÖSE, Leandro FINZETTO, Jonas GYNERSTED, Erika HEDBLOM
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Patent number: 10092958Abstract: A processing machine and method for planing an end surface of a finished pipe with a clamping device for the pipe to be processed via a tool holder with a planing tool, whereby the tool holder is driven by a motor and can rotate about an axis of rotation. The tool holder is driven by a motor so that it can rotate about an axis of rotation, whereby the clamping device and the tool holder are driven by a motor and can move toward one another in a direction parallel to the axis of rotation of the tool holder. The processing machine includes a cooling device that is arranged in such a manner that it cools the pipe to be processed and/or the planing tool with the aid of liquid and/or solid carbon dioxide during the operation of the device.Type: GrantFiled: December 10, 2013Date of Patent: October 9, 2018Assignee: SANDVIK MATERIALS TECHNOLOGY DEUTSCHLAND GMBHInventors: Thomas Frobose, Udo Rauffmann
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Publication number: 20180223388Abstract: A method for manufacturing a strand from a stainless steel by cold forming a billet into the cold-hardened strand and subsequently annealing the strand is provided. The method allows stainless steel strands to be produced, which have both a high tensile strength, as well as a high degree of elongation. The strand is heated to a temperature ranging from 400° C. to 460° C. while the strand is being annealed, and the cold-hardened strand is surrounded by a protective gas atmosphere during the heating process.Type: ApplicationFiled: February 15, 2016Publication date: August 9, 2018Inventors: Thomas FROBOSE, Christofer HEDVALL, Udo RAUFFMANN
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Publication number: 20180209005Abstract: A process for producing a high-grade steel tube includes the steps of: providing a tubular blank of an austenitic high-grade steel, wherein the high-grade steel comprises in weight % no more than 0.02% carbon, no more than 1.0% manganese, no more than 0.03% phosphor, no more than 0.015% sulfur, no more than 0.8% silicon, no more than 17.5% t to 18.5% nickel, no more than 19.5% to 20.5% chromium, no more than 6.0% to 6.5% molybdenum, no more than 0.18% to 0.25% nitrogen, no more than 0.5% to 1.0% copper,and a remainder of iron and unavoidable impurities; and cold-forming the blank into a tube.Type: ApplicationFiled: July 16, 2015Publication date: July 26, 2018Inventors: Jonas GUHRS, Christofer HEDVALL, Thomas FROBOSE, Udo RAUFFMANN
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Publication number: 20180029093Abstract: A roll straightening machine for straightening an elongated string member includes at least one first straightening roll rotatably mounted around a first rotation axis, and at least one second straightening roll rotatably mounted around a second rotation axis. The first and second rotation axis and rolls are oblique with respect to a longitudinal axis of an elongated string member to be received in the roll straightening machine, and also oblique with respect to one another. In order to provide a roll straightening machine that can be set up flexibly for different requirement profiles, the first rotation axis is mounted on a first holding device and the second rotation axis is mounted on a second holding device. The first and the second holding devices are supported by a frame in a removable manner, which is arranged to receive a variable number of holding devices having the straightening rolls.Type: ApplicationFiled: January 27, 2015Publication date: February 1, 2018Inventor: Thomas FROBOSE
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Patent number: 9839949Abstract: A method for producing a steel tube including the step of the manufacturing a steel tube having an inner tube wall, an outer tube wall, and a free tube cross-section enclosed by the inner tube wall, wherein after the manufacturing, the steel tube includes at least one contaminant on the inner tube wall. After the manufacturing of the steel tube, the inner tube wall is cleaned by introducing liquid or solid CO2 into the free tube cross-section, and of applying the liquid or solid CO2 onto the inner tube wall to remove the contaminant therefrom.Type: GrantFiled: March 11, 2014Date of Patent: December 12, 2017Assignee: Sandvik Materials Technology Deutschland GmbHInventors: Thomas Frobose, Udo Rauffmann
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Patent number: 9808844Abstract: A method for producing a steel tube include the manufacturing of a steel tube having an inner tube wall, an outer tube wall (3), and a free tube cross-section enclosed by the inner tube wall. After the manufacturing, the steel tube includes at least one contaminant on the outer tube wall and entails, after the manufacturing of the steel tube, cleaning of the outer tube wall by applying liquid or solid CO2 onto the outer tube wall in order to remove a contaminant from the outer tube wall.Type: GrantFiled: March 11, 2014Date of Patent: November 7, 2017Assignee: Sandvik Materials Technology Deutschland GMBHInventors: Thomas Frobose, Udo Rauffmann
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Patent number: 9796007Abstract: A cold pilger rolling mill includes a pair of rolls rotatably attached to a roll stand, a crank drive on a driveshaft, which is rotatably mounted around a rotation axis, with a counterweight attached to the crank drive at a radial distance from the rotation axis, and a push rod with a first and a second end. The first end of the push rod is rotatably attached on the crank drive wherein, during the operation of the mill, a rotation of the crank drive is converted into a translation movement of the roll stand between a first and a second reversal position. The radial distance of the first end of the push rod from the rotation axis is adjustable, so that the distance between the two reversal positions of the translation movement of the roll stand is adjustable.Type: GrantFiled: November 4, 2014Date of Patent: October 24, 2017Assignee: SANDVIK MATERIALS TECHNOLOGY DEUTSCHLAND GMBHInventor: Thomas Frobose