Patents by Inventor Peter PALZER
Peter PALZER 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: 20240084414Abstract: A method for producing a component from a blank made of a medium manganese steel having 4 to 12 wt. % Mn and a TRIP effect at room temperature, in which method the blank is mechanically cut to make a prepared blank having the desired dimensions, cut edges are produced on the prepared blank by means of mechanical cutting, and the prepared blank with the cut edges is cold-formed to obtain the component at room temperature or at a temperature above room temperature but below 60° C. The method is distinguished by cost-effective production, improved formability with reduced cracking at the formed cut edges, while simultaneously reducing the forming forces. The mechanical cutting is performed at a pre-heating temperature in the range of 60° C. to less than 250° C.Type: ApplicationFiled: January 20, 2022Publication date: March 14, 2024Inventors: Peter Palzer, Zacharias Georgeou
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Patent number: 11519050Abstract: The invention relates to a method for producing a component from a medium manganese flat steel product having 4 to less than 10 wt. % Mn, 0.0005 to 0.9 wt. % C, 0.02 to 10 wt. % Al, the remainder iron, including unavoidable steel-accompanying elements, and having a TRIP effect at room temperature. In order to produce a component, which is distinguished by very high strengths and an increased residual strain and re-shaping capacity, the flat steel product, according to the invention, is re-shaped by at least one re-shaping step to form a component and, before and/or during and/or after the at least one re-shaping step, the flat steel product is cooled down to a temperature of the flat steel product of less than room temperature to ?196° C. The invention further relates to a component produced by this method and to a use for said components.Type: GrantFiled: August 16, 2017Date of Patent: December 6, 2022Assignee: SALZGITTER FLACHSTAHL GMBHInventors: Peter Palzer, Thomas Evertz, Manuel Otto, Kai Köhler
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Patent number: 11352679Abstract: A steel product includes the following chemical composition in wt. %: C: 0.01 to <0.3, Mn: 4 to <10, Al: 0.003 to 2.9, Mo: 0.01 to 0.8, Si: 0.02 to 0.8, Ni: 0.005 to 3, P: <0.04, S: <0.02, N: <0.02, with the remainder being iron including unavoidable steel-associated elements, wherein an alloy composition satisfies the equation 6<1.5 Mn+Ni<8; or the equation 0.11<C+Al<3, or an alloy composition contains, in addition to Ni, at least one or more of the elements, in wt. %, B: 0.0005 to 0.014; V: 0.006 to 0.1; Nb: 0.003 to 0.1; Co: 0.003 to 3; W: 0.03 to 2 or Zr: 0.03 to 1. The steel product has a microstructure of 2 to 90 vol. % austenite, less than 40 vol. % ferrite and/or bainite, with the remainder being martensite.Type: GrantFiled: October 27, 2017Date of Patent: June 7, 2022Assignee: Salzgitter Flachstahl GmbHInventors: Peter Palzer, Manuel Otto, Kai Köhler, Thomas Evertz
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Patent number: 11261503Abstract: The invention relates to a method for producing a flat steel product made of a medium manganese steel having a TRIP/TWIP effect. The aim of the invention is to achieve an improvement in the yield strength when a sufficient residual deformability of the produced flat steel product is obtained. This aim is achieved by the following steps: cold rolling a hot or cold strip, annealing the cold-rolled hot or cold strip at 500 to 840° C. for 1 minute to 24 hours, temper rolling or finishing the annealed hot or cold strip to form a flat steel product having a degree of deformability between 0.3% and 60%. The invention further relates to a flat steel product produced according to said method and to a use thereof.Type: GrantFiled: September 13, 2017Date of Patent: March 1, 2022Assignee: Salzgitter Flachstahl GmbHInventors: Peter Palzer, Thomas Evertz, Manuel Otto, Kai Köhler
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Patent number: 11214846Abstract: The invention relates to a method for producing a component from a medium-manganese flat steel product with 4 to 12 wt % Mn, preferably more than 5 to less than 10 wt % Mn, and with TRIP/TWIP effect. In order to improve the degrees of deformation of the shaped component while at the same time reducing the forming forces, the invention proposes shaping the flat steel product into a component in a first shaping step at a temperature of the flat steel product of 60° C. to below Ac3, preferably from 60° C. to 450° C. The invention also relates to a component produced according to said method and to a use for said components.Type: GrantFiled: September 12, 2017Date of Patent: January 4, 2022Assignee: Salzgitter Flachstahl GmbHInventors: Peter Palzer, Thomas Evertz, Manuel Otto, Kai Köhler
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Publication number: 20210301376Abstract: A high-strength, manganese-containing steel, in particular for producing a flexibly rolled flat steel product in the form of a hot or cold strip, includes the following chemical composition (in wt. %): C: 0.005 to 0.6; Mn: 4 to 10; Al: 0.005 to 4; Si: 0.005 to 2; P: 0.001 to 0.2; S: up to 0.05; N: 0.001 to 0.3; with the remainder being iron including unavoidable steel-associated elements, with optional alloying of one or more of the following elements (in wt. %): Sn: 0 to 0.5; Ni: 0 to 2; Cu: 0.005 to 3; Cr: 0.1 to 4; V: 0.005 to 0.9; Nb: 0.005 to 0.9; Ti: 0.005 to 0.9; Mo: 0.01 to 3; W: 0.1 to 3; Co: 0.1 to 3; B: 0.0001 to 0.05; Zr: 0.005 to 0.5; Ca: 0.0002 to 0.1 which has a good combination of strength, expansion and deformation properties.Type: ApplicationFiled: June 11, 2021Publication date: September 30, 2021Applicant: Salzgitter Flachstahl GmbHInventors: Peter Palzer, Thomas Evertz
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Publication number: 20210147953Abstract: A steel strip is produced by melting a steel melt containing (in wt. %): C: 0.1 to <0.3; Mn: 4 to <8; Al: >1 to 2.9; P: <0.05; S: <0.05; N: <0.02; remainder iron including unavoidable steel-associated elements. The steel melt is cast to form a pre-strip or to form a slab and heated to a rolling temperature of 1050 to 1250° C. or in-line rolling out of the casting heat. The pres-strip or slab is hot rolled into a hot strip having a thickness of 12 to 0.8 mm, at a final rolling temperature of 1050 to 800° C. The hot strip is reeled at a temperature of more than 200 to 800° C., pickled, annealed for an annealing time of 1 min to 48 h and at a temperature of 540 to 840° C., and cold rolled at room temperature or elevated temperature in at least one rolling pass.Type: ApplicationFiled: January 27, 2021Publication date: May 20, 2021Applicant: Salzgitter Flachstahl GmbHInventor: Peter Palzer
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Publication number: 20210140008Abstract: In a method for producing a flat steel product made of high-strength manganese steel, a hot or cold strip is provided with an alloy composition containing (in wt %): C: 0.0005 to 0.9; Mn: 4 to 12; Al: up to 10; P: <0.1; S: <0.1; N: <0.1; the remainder being iron, including unavoidable steel-alloying elements, with optional addition of one or more of the following elements (in wt %): Si: up to 6; Cr: up to 6; Nb: up to 1; V: up to 1.5; Ti: up to 1.5; Mo: up to 3; Sn: up to 0.5; Cu: up to 3; W: up to 5; Co: up to 8; Zr: up to 0.5; Ta: up to 0.5; Te: up to 0.5, B: up to 0.15. The hot or cold strip is flexibly rolled to a final thickness at a temperature of 60° C. to below Ac3 prior to a first rolling step.Type: ApplicationFiled: September 12, 2017Publication date: May 13, 2021Applicant: Salzgitter Flachstahl GmbHInventors: PETER PALZER, THOMAS EVERTZ, MANUEL OTTO, KAI KÖHLER
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Publication number: 20190264297Abstract: A steel product includes the following chemical composition in wt. %: C: 0.01 to <0.3, Mn: 4 to <10, Al: 0.003 to 2.9, Mo: 0.01 to 0.8, Si: 0.02 to 0.8, Ni: 0.005 to 3, P: <0.04, S: <0.02, N: <0.02, with the remainder being iron including unavoidable steel-associated elements, wherein an alloy composition satisfies the equation 6<1.5 Mn+Ni<8; or the equation 0.11<C+Al<3, or an alloy composition contains, in addition to Ni, at least one or more of the elements, in wt. %, B: 0.0005 to 0.014; V: 0.006 to 0.1; Nb: 0.003 to 0.1; Co: 0.003 to 3; W: 0.03 to 2 or Zr: 0.03 to 1. The steel product has a microstructure of 2 to 90 vol. % austenite, less than 40 vol. % ferrite and/or bainite, with the remainder being martensite.Type: ApplicationFiled: October 27, 2017Publication date: August 29, 2019Applicant: SALZGiTTER FLACHSTAHL GMBHInventors: PETER PALZER, MANUEL OTTO, KAI KÖHLER, THOMAS EVERTZ
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Publication number: 20190256943Abstract: The invention relates to a method for producing a cold-rolled steel strip made of a high-strength mangan-containing steel with TRIP-characteristics, containing (in wt. %) C: 0.0005 to 0.9, Mn: more than 3.0 to 12, with the remaining portion being iron including unavoidable steel-associated elements, with the optional addition of one or more of the following elements (in wt. %): Al: up to 10; Si: up to 6; Cr: up to 6; Nb: up to 1.5; V: up to 1.5; Ti: up to 1.5; Mo: up to 3; Cu: up to 3; Sn: up to 0.5; W: up to 5; Co: up to 8; Zr: up to 0.5; Ta: up to 0.5; Te: up to 0.5; B: up to 0.15; P: max. 0.1, in particular <0.04; S: max. 0.1, in particular <0.02; N: max. 0.1, in particular <0.05; Ca: up to 0.1. According to the invention, in order to improve a corresponding method, the cold-rolling to a required end thickness occurs at a temperature of over 50° C. to 400° C. before the first impact.Type: ApplicationFiled: June 8, 2017Publication date: August 22, 2019Applicant: SALZGITTER FLACHSTAHL GMBHInventors: PETER PALZER, Thomas Evertz, MARTIN SCHUBERT
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Publication number: 20190211417Abstract: The invention relates to a method for producing a component from a medium manganese flat steel product having 4 to less than 10 wt. % Mn, 0.0005 to 0.9 wt. % C, 0.02 to 10 wt. % Al, the remainder iron, including unavoidable steel-accompanying elements, and having a TRIP effect at room temperature. In order to produce a component, which is distinguished by very high strengths and an increased residual strain and re-shaping capacity, the flat steel product, according to the invention, is re-shaped by at least one re-shaping step to form a component and, before and/or during and/or after the at least one re-shaping step, the flat steel product is cooled down to a temperature of the flat steel product of less than room temperature to ?196° C. The invention further relates to a component produced by this method and to a use for said components.Type: ApplicationFiled: August 16, 2017Publication date: July 11, 2019Applicant: Salzgitter Flachstahl GmbHInventors: PETER PALZER, THOMAS EVERTZ, MANUEL OTTO, KAI KÖHLER
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Publication number: 20190203311Abstract: The invention relates to a method for producing a flat steel product made of a medium manganese steel having a TRIP/TWIP effect. The aim of the invention is to achieve an improvement in the yield strength when a sufficient residual deformability of the produced flat steel product is obtained. This aim is achieved by the following steps: cold rolling a hot or cold strip, annealing the cold-rolled hot or cold strip at 500 to 840° C. for 1 minute to 24 hours, temper rolling or finishing the annealed hot or cold strip to form a flat steel product having a degree of deformability between 0.3% and 60%. The invention further relates to a flat steel product produced according to said method and to a use thereof.Type: ApplicationFiled: September 13, 2017Publication date: July 4, 2019Applicant: Salzgitter Flachstahl GmbHInventors: PETER PALZER, THOMAS EVERTZ, MANUEL OTTO, KAI KÖHLER
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Publication number: 20190203312Abstract: The invention relates to a method for producing a component from a medium-manganese flat steel product with 4 to 12 wt % Mn, preferably more than 5 to less than 10 wt % Mn, and with TRIP/TWIP effect. In order to improve the degrees of deformation of the shaped component while at the same time reducing the forming forces, the invention proposes shaping the flat steel product into a component in a first shaping step at a temperature of the flat steel product of 60° C. to below Ac3, preferably from 60° C. to 450° C. The invention also relates to a component produced according to said method and to a use for said components.Type: ApplicationFiled: September 12, 2017Publication date: July 4, 2019Applicant: Salzgitter Flachstahl GmbHInventors: PETER PALZER, THOMAS EVERTZ, MANUEL OTTO, KAI KÖHLER
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Publication number: 20190185951Abstract: A steel strip is produced by melting a steel melt containing (In wt. %): C: 0.1 to <0.3; Mn: 4 to <8; Al: >1 to 2.9; P: <0.05; S: <0.05; N: <0.02; remainder iron including unavoidable steel-associated elements. The steel melt is cast to form a pre-strip or to form a slab and heated to a rolling temperature of 1050 to 1250° C. or in-line rolling out of the casting heat. The pres-strip or slab is hot rolled into a hot strip having a thickness of 12 to 0.8 mm, at a final rolling temperature of 1050 to 800° C. The hot strip is reeled at a temperature of more than 200 to 800° C., pickled, annealed for an annealing time of 1 min to 48 h and at a temperature of 540 to 840° C., and cold rolled at room temperature or elevated temperature in at least one rolling pass.Type: ApplicationFiled: August 18, 2017Publication date: June 20, 2019Applicant: Salzgitter Flachstahl GmbHInventor: Peter PALZER
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Publication number: 20190085434Abstract: The invention relates to a method for producing a component by hot-forming a pre-product composed of steel, wherein the pre-product is heated to a temperature above 60° C. and below the Ac3 transformation temperature and then formed in this temperature range, wherein the component has a minimum tensile strength of 700 MPa and high elongation at break, wherein the pre-product has the following alloy composition in percent by weight: C: 0.0005 to 0.9; Mn: more than 3.0 to 12; the remainder iron including unavoidable steel-accompanying elements, with the optional addition of one or more of the following elements (in percent by weight): Al: up to 10; Si: up to 6; Cr: up to 6; Nb: up to 1.5; V; up to 1.5; Ti: up to 1.5; Mo: up to 3; Cu: up to 3; Sn: up to 0.5; W up to 5; Co: up to 8; Zr: up to 0.5; Ta: up to 0.5; Te: up to 0.5; B: up to 0.15; P: at most 0.1, in particular <0.04; S: at most 0.1, in particular <0.02; N: at most 0.1, in particular <0.05; Ca: up to 0.1.Type: ApplicationFiled: March 10, 2017Publication date: March 21, 2019Applicant: SALZGITTER FLACHSTAHL GMBHInventors: PETER PALZER, THOMAS EVERTZ, MANUEL OTTO, KAI KÖHLER
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Publication number: 20180313471Abstract: A composite pipe includes a carrier pipe and at least one protective pipe. The carrier pipe is produced from a non-corrosion resistant steel, which has at least a partially austenitic structure, with the following chemical composition (in wt. %): C: 0.005 to 1.4; Mn: 5 to 35; the remainder being iron including unavoidable elements accompanying steel, with the optional alloying of the following elements (in wt. %): Ni: 0 to 6; Cr: 0 to 9; Al: 0 to 15; Si: 0 to 8; Mo: 0 to 3; Cu: 0 to 4; V: 0 to 2; Nb: 0 to 2; Ti: 0 to 2; Sb: 0 to 0.5; B: 0 to 0.5; Co: 0 to 5; W: 0 to 3; Zr: 0 to 4; Ca: 0 to 0.1; P: to 0.6; S: 0 to 0.2; N: 0.002 to 0.3. In a method for producing a composite pipe of this type, the carrier pipe and the at least one protective pipe are mechanically or metallurgically connected to one another.Type: ApplicationFiled: October 19, 2016Publication date: November 1, 2018Applicant: Salzgitter Flachstahl GmbHInventors: MARC DEBEAUX, PETER PALZER, KAI KÖHLER, ZACHARIAS GEORGEOU
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Publication number: 20180230579Abstract: A formable lightweight steel having improved mechanical properties and a high resistance to delayed hydrogen-induced cracking formation and hydrogen embrittlement includes the following elements (in wt. %): C 0.02 to ?1.0; Mn 3 to 30; Si?4; P max. 0.1; S max. 0.1; N max. 0.03; Sb 0.003 to 0.8, particularly advantageously to 0.5, as well as at least one or more of the following carbide-forming elements in the specified proportions (in wt. %): Al?15; Cr>0.1 to 8; Mo 0.05 to 2; Ti 0.01 to 2; V 0.005 to 1; Nb 0.005 to 1; W 0.005 to 1; Zr 0.001 to 0.3; with the remainder being iron including the usual steel-accompanying elements, with the optional addition of the following elements, in wt. %: max. 5 Ni, max. 10 Co, max. 0.005 Ca, max. 0.01 B and 0.05 to 2 Cu.Type: ApplicationFiled: August 3, 2016Publication date: August 16, 2018Applicant: SALZGITTER FLACHSTAHL GMBHInventor: PETER PALZER
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Publication number: 20180223403Abstract: The invention relates to a high-alloy steel, in particular for producing pipes shaped by means of internal high pressure, having high cold formability, TRIP and/or TWIP properties, a partially or completely austenitic microstructure having at least 5% residual austenite, and having the following chemical composition (in wt %): Cr: 7 to 20; Mn: 2 to 9; Ni: up to 9; C: 0.005 to 0.4; N: 0.002 to 0.3; the remainder being iron including unavoidable, steel-accompanying elements, with optional addition of the following elements (in wt %): Al: 0 to 3; Si: 0 to 2; Mo: 0.01 to 3; Cu: 0.005 to 4; V: 0 to 2; Nb: 0 to 2; Ti: 0 to 2; Sb: 0 to 0.5; B: 0 to 0.5; Co: 0 to 5; W: 0 to 3; Zr: 0 to 2; Ca: 0 to 0.1; P: 0 to 0.6; S: 0 to 0.2. The invention further relates to a method for producing pipes from this steel, said pipes being shaped by means of internal high pressure.Type: ApplicationFiled: July 26, 2016Publication date: August 9, 2018Applicant: Salzgitter Flachstahl GmbHInventors: THOMAS Evertz, ALEXANDER REDENIUS, MANUEL OTTO, PETER PALZER
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Publication number: 20180223399Abstract: A high-strength, manganese-containing steel, in particular for producing a flexibly rolled flat steel product in the form of a hot or cold strip, includes the following chemical composition (in wt. %): C: 0.005 to 0.6; Mn: 4 to 10; Al: 0.005 to 4; Si: 0.005 to 2; P: 0.001 to 0.2; S: up to 0.05; N: 0.001 to 0.3; with the remainder being iron including unavoidable steel-associated elements, with optional alloying of one or more of the following elements (in wt. %): Sn: 0 to 0.5; Ni: 0 to 2; Cu: 0.005 to 3; Cr: 0.1 to 4; V: 0.005 to 0.9; Nb: 0.005 to 0.9; Ti: 0.005 to 0.9; Mo: 0.01 to 3; W: 0.1 to 3; Co: 0.1 to 3; B: 0.0001 to 0.05; Zr: 0.005 to 0.5; Ca: 0.0002 to 0.1 which has a good combination of strength, expansion and deformation properties.Type: ApplicationFiled: August 3, 2016Publication date: August 9, 2018Applicant: Salzgitter Flachstahl GmbHInventors: PETER PALZER, THOMAS EVERTZ
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Publication number: 20180216207Abstract: The invention relates to a formable lightweight steel having improved mechanical properties and a high resistance to delayed hydrogen-induced cracking formation and hydrogen embrittlement comprising the following elements (in wt. %): C 0.02 to ?1.0; Mn 3 to 30; Si?4; P max. 0.1; S max. 0.1; N max. 0.03; Sb 0.003 to 0.8, particularly advantageously to 0.5, as well as at least one or more of the following carbide-forming elements in the specified proportions (in wt. %): Al?15; Cr>0.1 to 8; Mo 0.05 to 2; Ti 0.01 to 2; V 0.005 to 1; Nb 0.005 to 1; W 0.005 to 1; Zr 0.001 to 0.3; with the remainder consisting of iron including the usual steel-accompanying elements, with the optional addition of the following elements, in wt. %: max. 5 Ni, max. 10 Co, max. 0.005 Ca, max. 0.01 B and 0.05 to 2 Cu. The invention also relates to a method for producing the said lightweight steel.Type: ApplicationFiled: July 20, 2016Publication date: August 2, 2018Applicant: Salzgitter Flachstahl GmbHInventors: Peter PALZER, ZACHARIAS GEORGEOU