Patents by Inventor Ingo Von Hagen
Ingo Von Hagen 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: 6491771Abstract: A process and device for the production of continuously cast billets in a production plant employs a vertical, round strand-casting machine with horizontal run-out, at least one descaling device, and several following roll stands. For the production of round billets with diameters in the range of 90-300 mm, after the solidifying round billet has left the mold but before it has entered the following rolling unit, its surface is descaled and the area near the surface is cooled in defined manner to a temperature which is optimum for the grade of steel in question before the round billet is worked, first over the course of at least three successive horizontal passes then in a vertical pass, the surface of the preworked billet being descaled again before the last pass.Type: GrantFiled: August 3, 2001Date of Patent: December 10, 2002Assignee: SMS Demag AGInventors: Ingo von Hagen, Harald Wehage, Uwe Quitmann, Walter Weischedel
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Publication number: 20020150497Abstract: An alloy steel, includes 0.12 to 0.25 wt. % C, 0.40 wt. % or less Si, 1.20 to 1.80 wt. % Mn, 0.025 wt. % or less P, 0.010 wt. % or less S, 0.01 to 0.06 wt. % Al, 0.20 to 0.50 wt. % Cr, 0.20 to 0.50 wt. % Mo, 0.03 to 0.10 wt. % V, 0.20 wt. % or less Cu, 0.02 wt. % or less N, 0.30 to 1.00 wt. % W, and the balance iron and incidental impurities, for making high-strength, weldable seamless steel tubes for structural application, through a hot rolling process and subsequent quenching and tempering.Type: ApplicationFiled: February 28, 2002Publication date: October 17, 2002Applicant: V & M DEUTSCHLAND GMBHInventors: Ingo Von Hagen, Kurt Niederhoff, Bernhard Koschlig, Markus Pardun
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Patent number: 6435218Abstract: A steel pipe, includes an outer corrosive-preventive protective sheath, which has a surface layer of plastic material, and a crack stopper zone extending over a section of the pipe. The crack stopper zone includes a bandage which is wrapped around the pipe section and made of high-strength fiber material imbedded in a compacted matrix of thermoplastic and thermosetting plastic. The bandage is comprised of a plurality of wound layers joined to one another via the matrix by welding or gluing.Type: GrantFiled: February 13, 2001Date of Patent: August 20, 2002Assignee: Mannesmann AGInventors: Hans-Georg Hillenbrand, Ingo Von Hagen, Gerd Junker, Gerhard Knauf, Johannes Arndt
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Publication number: 20020011284Abstract: The invention relates to a process for producing seamless line pipes within the quality grade range X 52 to X 90, with a stable yield strength up to a temperature of use of 200° C., and with an essentially constant stress-strain characteristic, by hot-rolling a pipe blank made from a steel which contains the following alloying elements (% by weight): 1 C 0.06-0.18% Si max. 0.40% Mn 0.80-1.40% P max. 0.025% S max. 0.010% Al 0.010-0.060% Mo max. 0.50% V max. 0.10% Nb max. 0.10% N max. 0.015% W >0.30-1.Type: ApplicationFiled: July 15, 1999Publication date: January 31, 2002Inventors: INGO VON HAGEN, MARKUS RING, GERD HEINZ, BERNHARD KOSCHLIG, KURT NIEDERHOFF
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Publication number: 20010015234Abstract: A steel pipe, includes an outer corrosive-preventive protective sheath, which has a surface layer of plastic material, and a crack stopper zone extending over a section of the pipe. The crack stopper zone includes a bandage which is wrapped around the pipe section and made of high-strength fiber material imbedded in a compacted matrix of thermoplastic and thermosetting plastic. The bandage is comprised of a plurality of wound layers joined to one another via the matrix by welding or gluing.Type: ApplicationFiled: February 13, 2001Publication date: August 23, 2001Inventors: Hans-Georg Hillenbrand, Ingo Von Hagen, Gerd Junker, Gerhard Knauf, Johannes Arndt
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Patent number: 6153028Abstract: A device and a process for producing thin steel metal bars in which an elongated metal product is brought into contact with a molten metal causing the latter to crystallize. Different materials are used for the elongated metal product and the molten metal, whereby one of the materials is a stainless steel. A temperature of the elongated metal product, a temperature of the molten metal and a dwelling time of the elongated metal product in the molten metal are set in such a way that the molten metal crystallizes on the elongated metal product so as to form a layer having a thickness of 2% to 20% of a thickness of the elongated metal product.Type: GrantFiled: February 12, 1999Date of Patent: November 28, 2000Assignee: Mannesmann AGInventors: Fritz-Peter Pleschiutschnigg, Ingo Von Hagen, Markus Ring, Wolfgang Bleck, Tarek El Gammal, Paul Splinter, Peter Lorenz Hamacher, Oliver Richard Picht
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Patent number: 6095232Abstract: The invention is directed to a process for producing metallic composite material in which there is applied to at least one side of a parent strand a material having different material characteristics. For this purpose, according to the invention, the parent strand is guided through a melt having the same material composition as the parent strand, wherein melt crystallizes on by inversion casting and, at a predefinable distance from the surface of the molten bath, a composite section is fed to the carrier section after it has exited from the molten bath, this composite section being welded with the surface of the carrier section. The invention is further directed to a device for carrying out the process.Type: GrantFiled: February 6, 1998Date of Patent: August 1, 2000Assignee: Mannesmann AktiengesellschaftInventors: Tarek El Gammal, Gamal Mohamed Megahed, Fritz-Peter Pleschuitschnigg, Ingo Von Hagen
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Patent number: 5992501Abstract: An inversion casting vessel includes a melt-filled container with a hole in the floor through which a metal strip is drawn. As the strip is drawn through the container, crystallization of the melt on the metal strip occurs, thereby forming a metal strand. The hole in the floor is a slit shaped channel through which the strip is run in a low-contact manner. The container also includes a cooling device for cooling the melt in the area of the slit shaped channel. The cooling device maintains the temperature of the melt around the channel to create a two-phase field of the melt, one of the phases being crystal, making up 50%-90% of the two phase field. The metal strip first contacts the melt at the two-phase field of the melt as the strip is run through the melt container.Type: GrantFiled: October 14, 1997Date of Patent: November 30, 1999Assignee: Mannesmann AktiengesellschaftInventors: Tarek El Gammal, Peter Hamacher, Michael Vonderbank, Fritz-Peter Pleschiutschnigg, Ingo Von Hagen
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Patent number: 5881441Abstract: An apparatus and a process for making semi-finished products in the form of ti metal bars having a width-gauge ratio of over 60 and a maximum sheet metal gauge tolerance of 2%. A metal profile is fed continuously and upwardly through a pool of melt material having the same composition as the metal profile so as to form a coated metal profile. The metal profile is fed at a rate which would result in a coated metal profile having a thickness of at least three times that of the uncoated metal profile. The coated metal profile is subjected to a smoothing pass between a pair of smoothing rolls when the mean temperature in the crystallized layer of the coated metal profile meets a given condition. The smoothing rolls are adjustably disposed inside a housing at a distance of 0.5 to 5 m from the melt pool surface.Type: GrantFiled: September 30, 1997Date of Patent: March 16, 1999Assignee: Mannesmann AktiengesellschaftInventors: Fritz P. Pleschiutschnigg, Lothar Parschat, Dieter Stalleicken, Tarek El Gammal, Michael Vonderbank, Peter Lorenz Hamacher, Ingo von Hagen, Ulrich Menne, Uwe Schmidt
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Patent number: 5855238Abstract: A mother strip with a metallically pure surface is passed through a melt bath of a metal and whereby the coating is smoothed by rolling immediately after leaving the melt bath. The mother strip, having been preheated, to a temperature clearly above ambient temperature, especially above 200.degree. C., is introduced into the metal bath. The preheating is carried out by indirect heat exchange with the melt bath in an oxygen-free environment. The melt freshly supplied to the melt bath has an increased temperature in accordance with the heat lost due to preheating.Type: GrantFiled: November 7, 1997Date of Patent: January 5, 1999Assignee: Mannesmann AktiengesellschaftInventors: Fritz-Peter Pleschiutschnigg, Ingo Von Hagen
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Patent number: 5850869Abstract: An inversion casting device with a crystallizer which has a slit-shaped passage for guiding a substrate strip, this passage being arranged in the base and provided with a seal, and which communicates with a melt feed. A collecting tank is provided which passes horizontally about the crystallizer vessel so that the collecting tank communicates with nozzles (23) arranged in the region of the passage. The nozzle orifices are so arranged that the melt flowing out strikes the substrate strip at a flat angle of inclination .alpha. in the strip take-off direction.Type: GrantFiled: May 22, 1997Date of Patent: December 22, 1998Assignee: Mannesmann AktiengesellschaftInventors: Fritz-Peter Pleschiutschnigg, Dieter Stalleicken, Lothar Parschat, Ingo von Hagen, Ulrich Menne, Tarek El Gammal, Peter Lorenz Hamacher, Michael Vonderbank
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Patent number: 5832985Abstract: A process for producing a steel strip with properties of a cold-rolled product. The process including comprising the sequential steps of: a) producing a thin slab 30 to 100 mm thick from a steel melt by continuous casting in a continuous casting machine, and, after a cast strip emerges from a mold of the continuous casting machine, cast rolling the cast strip with a liquid core to reduce thickness of the cast strip by at least 10%; b) descaling the thin slab produced according to step a); c) hot rolling the descaled thin slab at temperatures in a range of 1150.degree. to 900.degree. C. for reducing thickness by at least 50% to produce an intermediate strip with a maximum thickness of 20 mm; d) after hot rolling, accelerated cooling of the intermediate strip to a temperature in a range of 850.degree. to 600.degree. C.; e) rolling down the cooled intermediate strip by isothermic rolling at 850.degree. to 600.degree. C.Type: GrantFiled: April 21, 1997Date of Patent: November 10, 1998Assignee: Mannesmann AktiengesellschaftInventors: Fritz-Peter Pleschiutschnigg, Ingo von Hagen, Wolfgang Bleck, Paul Splinter
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Patent number: 5832984Abstract: Molten steel is poured into a water cooled continuous casting mold in which the steel solidifies partially with the formation of a strand having a length and a peripheral shell. The strand has a cross-sectional surface area with one of a round shape, an oval shape and a polygonal shape having more than four sides. Additionally, the strand has a minimum circumference of 200 mm. The cross-sectional surface area of the strand leaving the mold is then reduced using rolls before the strand fully solidifies. The reducing includes deforming the strand into a polygonal shape having at least four corners while maintaining the circumference as well as the length of the strand at the peripheral shell constant.Type: GrantFiled: September 5, 1996Date of Patent: November 10, 1998Assignee: Mannesmann AktiegesellschaftInventors: Fritz-Peter Pleschiutschnigg, Lothar Parschat, Dieter Stalleicken, Winfried Binder, Klaus Bruckner, Ingo von Hagen, Werner Rahmfeld
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Patent number: 5722151Abstract: An apparatus and a process for making semi-finished products in the form of thin metal bars having a width-gauge ratio of over 60 and a maximum sheet metal gauge tolerance of 2%. A metal profile is fed continuously and upwardly through a pool of melt material having the same composition as the metal profile so as to form a coated metal profile. The metal profile is fed at a rate which would result in a coated metal profile having a thickness of at least three times that of the uncoated metal profile. The coated metal profile is subjected to a smoothing pass between a pair of smoothing rolls when the mean temperature in the crystallized layer of the coated metal profile meets a given condition. The smoothing rolls are adjustably disposed inside a housing at a distance of 0.5 to 5 m from the melt pool surface.Type: GrantFiled: January 25, 1996Date of Patent: March 3, 1998Assignee: Mannesmann AktiengesellschaftInventors: Fritz P. Pleschiutschnigg, Lothar Parschat, Dieter Stalleicken, Tarek El Gammal, Michael Vonderbank, Peter Lorenz Hamacher, Ingo von Hagen, Ulrich Menne, Uwe Schmidt
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Patent number: 5573605Abstract: A high-temperature steel for boiler making having improved creep strength and low tendency to hardening in welded condition, having the following melt analysis (wt. %):C 0.050 to 0.100%Si 0.15 to 0.45%Mn 0.30 to 0.70%P .ltoreq.0.020%S .ltoreq.0.010%Al .ltoreq.0.020%Cr 2.20 to 2.60%Mo 0.90 to 1.10%V 0.20 to 0.30%Ti 0.05 to 0.10%B 0.0015 to 0.0070%N .ltoreq.0.01%The balance of the steel is comprised of iron and ordinary impurities. The steel is annealed for a period of about 30 to about 60 minutes at about 980.degree. C. to about 1040.degree. C., thereupon cooled in air, and then tempered for at least one hour at about 730.degree. C. to about 760.degree. C.Type: GrantFiled: March 7, 1995Date of Patent: November 12, 1996Assignee: Mannesmann AktiengesellschaftInventors: Walter Bendick, Klaus Haarmann, Ingo Von Hagen
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Patent number: 5462615Abstract: Disclosed is a process for producing seamless steel pipes or flat products (strip or sheet) for pipes or vessels which are intended for the conveyance, transport or processing of gaseous or liquid hydrocarbons containing CO.sub.2 and water and possibly small proportions of H.sub.2 S and are resistant to stress crack corrosion and have good welding properties at the same time and a 0.2-percent elongation limit of at least 450 N/mm.sup.2. The process uses a nickel-containing steel of the following composition (percent by weight): min. 0.015% C, 0.15-0.50% Si, max. 2.00% Mn, max. 0.020% P, max. 0.003% S, 12.0-13.8% Cr, 0.002-0.02% N, 0.01-0.05% Nb, remainder iron and usual impurities. It is presently suggested that the nickel content is limited to a maximum of 0.25%, the manganese content amounts to at least 1.0%, the carbon content is limited to 0.035%, and 0.01 to 1.2% molybdenum is contained as additional alloying component.Type: GrantFiled: July 25, 1994Date of Patent: October 31, 1995Assignee: Mannesmann AktiengesellschaftInventors: Ingo Von Hagen, Rolf Popperling, Hubertus Schlerkmann, Ulrike Zeislmair
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Patent number: 5370751Abstract: An air hardening steel which is killed during casting used as material for manufacturing structural tubes for structural elements which are subjected to high mechanical loads, particularly for door reinforcements in the manufacture of automobiles. The steel is composed of in percent by weight:0.15-0.30% C0.50-0.80% Si2.05-3.35% Mnmax. 0.03% Pmax. 0.03% S0.50-1.00% Crmax. 0.60% Momax. 0.05% Al0.01-0.05% Ti0.0015-0.0035% B0.002-0.015% Nremainder iron and impurities,wherein:Ti(%):N(%).gtoreq.3.4%Mn(%)+Cr (%)+Mo(%)+Si(%).gtoreq.3.3%.Type: GrantFiled: June 10, 1993Date of Patent: December 6, 1994Assignee: Mannesmann AktiengesellschaftInventors: Ingo von Hagen, Ulrich Menne, Ulrich Hoffmann, Bernhard Vogelsang
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Patent number: 5256219Abstract: An economical steel for a reinforcement tube which steel meets the minimum requirements for reinforcement tubes, has a composition as follows: 0.15-0.25 % Carbon, 3.40-6.10 % Manganese, 0-1.0 % Nickel, 0-1.0 % Chromium, 0-1.0 % Molybdenum, 0-0.15 % Vanadium, max. 0.03 % Phosphorous, max. 0.03 % Sulfur, max. 0.6 % Silicon, max. 0.05 % Aluminum, with the remainder being iron and usual impurities, such that the sum total of the content of manganese, nickel, chromium, molybdenum and ten times the content of vanadium equals at least 4.5 wt. %.Type: GrantFiled: May 4, 1992Date of Patent: October 26, 1993Assignee: Mannesmann AktiengesellschaftInventors: Ingo von Hagen, Christoph Prasser, Enno Wieting
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Patent number: 5232740Abstract: A method of manufacturing plated hollow metallic blocks for further processing into seamless tubes of the type in which a body is immersed one or more times into a melt includes: protecting the inner surfaces of a hollow body of plating material against the admission of a melt of support material during the immersion of the hollow body in the melt of support material; immersing such hollow body formed of plating material into the melt of support material; removing the hollow body from the melt of support material; and crystallizing a layer of support material on the outer surface of the hollow body.Type: GrantFiled: November 13, 1991Date of Patent: August 3, 1993Assignee: Mannesmannufer AktiengesellschaftInventors: Ingo Von Hagen, Christoph Prasser, Fritz P. Pleschiutschnigg, Lothar Parschat
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Patent number: 5122198Abstract: A method of improving the resistance to H-induced stress-corrosion cracking of articles of low- to medium-alloy structural steels which come into contact with aqueous H.sub.2 S-containing fluids and which are manufactured by one of (i) hot rolling, with or without subsequent heat treatment, (ii) by TM-rolling, with or without accelerated cooling, and (iii) by cold rolling with subsequent heat treatment and which are then cold strained from 0% to less than 2%. In order to economically increase the resistance of articles of structural steel to H-induced stress-corrosion cracking, the articles are subjected to a final annealing for a period of at least two seconds at a temperature which is at least 540.degree. C. and the upper limit of which is as follows: In the case of hot rolled or TM-rolled or normalized articles, 30K below A.sub.C1 ; in the case of hardened and tempered articles, 30K below the tempering temperature last employed.Type: GrantFiled: June 12, 1991Date of Patent: June 16, 1992Assignee: Mannesmann AktiengesellschaftInventors: Ingo von Hagen, Gerd Heinz, Rolf K. Popperling, Hubertus Schlerkmann