Patents Assigned to Hyundai Steel Company
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Patent number: 11975375Abstract: According to an exemplary embodiment of the present disclosure, disclosed is an aluminum coated blank that includes a first coated steel sheet; a second coated steel sheet connected to the first coated steel sheet; and a joint portion that connects the first coated steel sheet to the second coated steel plate at a boundary between the first coated steel sheet and the second coated steel sheet.Type: GrantFiled: December 3, 2020Date of Patent: May 7, 2024Assignee: Hyundai Steel CompanyInventors: Chang Yong Lee, Sung Ryul Kim, Jeong Seok Kim, Joo Sik Hyun, Yoo Dong Chung, Soon Geun Jang
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Publication number: 20240124962Abstract: A steel for a gear includes, based on a total weight of the steel: C: 0.10-0.30 wt %, Si: 0.60-0.80 wt %, Mn: 0.25-0.75 wt %, Cr: 1.80-2.20 wt %, Ni: 0.50-1.50 wt %, Mo: 0.20-0.40 wt %, Nb: 0.025-0.050 wt %, V: 0.030-0.050 wt %, and a balance of Fe and inevitable impurities, wherein contents of Nb and V satisfy the following <Relationship Formula 1>: 0.055<[Nb]+[V]<0.100??<Relationship Formula 1>, wherein [Nb] represents a content of Nb and [V] represents a content of V.Type: ApplicationFiled: December 26, 2023Publication date: April 18, 2024Applicants: Hyundai Motor Company, Kia Corporation, HYUNDAI STEEL COMPANYInventors: In Beom Lee, Min Woo Kang, Min Woo Kang, Dong Hwi Kim, Chang Won Kang, Myung Sik Kim, Sung Min Hong, Gung Seung Nam, Sang Won Lee
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Patent number: 11958131Abstract: Disclosed are an aluminum-coated blank, a manufacturing method thereof, and an apparatus for manufacturing the same. The blank includes two or more aluminum-coated steel sheets connected together by a joint, each of the steel sheets including: a base steel sheet including 0.01-0.5 wt % of carbon, 0.01-1.0 wt % of silicon, 0.5-3.0 wt % of manganese, greater than 0 but not greater than 0.05 wt % of phosphorus, greater than 0 but not greater than 0.01 wt % of sulfur, greater than 0 but not greater than 0.1 wt % of aluminum, greater than 0 but not greater than 0.001 wt % of nitrogen, and the balance of iron and other inevitable impurities; and a coating layer including aluminum and formed on at least one surface of the base steel sheet.Type: GrantFiled: November 4, 2020Date of Patent: April 16, 2024Assignee: Hyundai Steel CompanyInventors: Chang Yong Lee, Jeong Seok Kim, Sung Ryul Kim, Tae Woo Kwon
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Patent number: 11938530Abstract: A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0<(Tg?Ti)/Lt<0.025° C./mm, where Tg denotes a soaking temperature (° C.), Ti denotes an initial temperature (° C.) of the heating furnace, and Lt denotes a length (mm) of step heating sections.Type: GrantFiled: January 12, 2023Date of Patent: March 26, 2024Assignee: Hyundai Steel CompanyInventor: Je Youl Kong
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Patent number: 11931785Abstract: A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0<(Tg?Ti)/Lt<0.025° C./mm, where Tg denotes a soaking temperature (° C.), Ti denotes an initial temperature (° C.) of the heating furnace, and Lt denotes a length (mm) of step heating sections.Type: GrantFiled: January 12, 2023Date of Patent: March 19, 2024Assignee: Hyundai Steel CompanyInventor: Je Youl Kong
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Patent number: 11931786Abstract: A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0<(Tg?Ti)/Lt<0.025° C./mm, where Tg denotes a soaking temperature (° C.), Ti denotes an initial temperature (° C.) of the heating furnace, and Lt denotes a length (mm) of step heating sections.Type: GrantFiled: January 12, 2023Date of Patent: March 19, 2024Assignee: Hyundai Steel CompanyInventor: Je Youl Kong
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Publication number: 20240075798Abstract: Disclosed is a vehicle battery case including: a case body in which a vehicle battery is contained; and a side portion extending in a longitudinal direction of a vehicle and coupled to a side of the case body, thereby protecting a side of the vehicle battery. The side portion includes: a lower panel extending outwards from the case body and having multiple first protrusions formed to protrude upwards; an upper panel disposed above the lower panel and extending outwards from the case body so as to form a closed section together with the lower panel; and a reinforcement panel disposed between the upper panel and the lower panel so as to extend outwards from the case body, thereby reinforcing rigidity of the side portion together with the lower panel and the upper panel.Type: ApplicationFiled: March 2, 2023Publication date: March 7, 2024Applicants: Hyundai Motor Company, Kia Corporation, HYUNDAI STEEL COMPANY, SEOJIN INDUSTRIAL Co., Ltd.Inventors: Sung Ho YOON, Uk HEO, Han Young HWANG, Sang Pil PARK
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Patent number: 11913117Abstract: Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.Type: GrantFiled: February 23, 2023Date of Patent: February 27, 2024Assignee: Hyundai Steel CompanyInventors: Hye Jin Kim, Kyu Yeon Hwang, Hyun Yeong Jung, Jin Ho Lee, Seung Pill Jung
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Patent number: 11898218Abstract: Provided is a material for hot stamping including: a steel sheet including carbon (C) in an amount of 0.28 wt % to 0.50 wt %, silicon (Si) in an amount of 0.15 wt % to 0.70 wt %, manganese (Mn) in an amount of 0.5 wt % to 2.0 wt %, phosphorus (P) in an amount less than or equal to 0.05 wt %, sulfur (S) in an amount less than or equal to 0.01 wt %, chromium (Cr) in an amount of 0.1 wt % to 0.5 wt %, boron (B) in an amount of 0.001 wt % to 0.005 wt %, balance iron (Fe), and other inevitable impurities; and fine precipitates distributed in the steel sheet, wherein the fine precipitates include nitride or carbide of at least one of titanium (Ti), niobium (Nb), and vanadium (V), and trap hydrogen.Type: GrantFiled: December 2, 2020Date of Patent: February 13, 2024Assignee: Hyundai Steel CompanyInventors: Nu Ri Shin, Hun Chul Kang, Ji Hee Son, Byoung Hoon Kim
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Patent number: 11898231Abstract: A steel for a gear includes, based on a total weight of the steel: C: 0.10-0.30 wt %, Si: 0.60-0.80 wt %, Mn: 0.25-0.75 wt %, Cr: 1.80-2.20 wt %, Ni: 0.50-1.50 wt %, Mo: 0.20-0.40 wt %, Nb: 0.025-0.050 wt %, V: 0.030-0.050 wt %, and a balance of Fe and inevitable impurities, wherein contents of Nb and V satisfy the following <Relationship Formula 1>: 0.055<[Nb]+[V]<0.100??<Relationship Formula 1>, wherein [Nb] represents a content of Nb and [V] represents a content of V.Type: GrantFiled: April 19, 2021Date of Patent: February 13, 2024Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAI STEEL COMPANYInventors: In Beom Lee, Min Woo Kang, Min Woo Kang, Dong Hwi Kim, Chang Won Kang, Myung Sik Kim, Sung Min Hong, Gung Seung Nam, Sang Won Lee
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Patent number: 11674196Abstract: A steel reinforcing bar contains 0.06 wt % to 0.11 wt % carbon, more than 0 and not more than 0.25 wt % silicon, 0.8 wt % or more and less than 2.0 wt % manganese, more than 0 and not more than 0.01 wt % phosphorus, more than 0 and not more than 0.01 wt % sulfur, 0.01 to 0.03 wt % aluminum, 0.50 to 1.00 wt % nickel, 0.027 to 0.125 wt % molybdenum, more than 0 and not more than 0.25 wt % chromium, more than 0 and not more than 0.28 wt % copper, more than 0 and not more than 0.01 wt % nitrogen, and the remainder being iron and unavoidable impurities. The reinforcing bar has a surface layer and a core. The surface layer has a hardened layer of tempered martensite, and the core has a mixed structure of bainite, ferrite and pearlite.Type: GrantFiled: January 22, 2018Date of Patent: June 13, 2023Assignee: Hyundai Steel CompanyInventors: Jun Ho Chung, Tae Hyung Kim, Ju Sang Lee, Se Jin Kim, Kyoung Rok Lim
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Patent number: 11655518Abstract: In accordance with one aspect of the present disclosure, there is provided a steel material for a tailor-welded blank, including 0.04 to 0.06 wt % of carbon (C), 1.2 to 1.5 wt % of manganese (Mn), 0.01 to 0.10 wt % of titanium (Ti), 0.01 to 0.10 wt % of niobium (Nb), and the balance of iron (Fe) and inevitable impurities; having a tensile strength (TS) of 550 MPa or greater, a yield strength (YS) of 300 MPa or greater, and an elongation (EL) of 20% or greater; and having a dual-phase structure of ferrite and martensite.Type: GrantFiled: November 16, 2021Date of Patent: May 23, 2023Assignee: Hyundai Steel CompanyInventors: Byung Gil Yoo, Hyeong Hyeop Do, Chee Woong Song, Do Hak Kim, Young Mun Shin, Soon Geun Jang, Sang Mun Hong
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Patent number: 11643697Abstract: A method for manufacturing a high-strength steel bar can include the steps of: reheating a steel slab at a temperature ranging from 1000° C. to 1100° C., the steel slab including a certain amount of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), copper (Cu), nickel (Ni), molybdenum (Mo), aluminum (Al), vanadium (V), nitrogen (N), antimony (Sb), tin (Sn), and iron (Fe) and other inevitable impurities, The method can further include finish hot-rolling the reheated steel slab at a temperature of 850° C. to 1000° C., and cooling the hot-rolled steel to a martensite transformation start temperature (Ms (° C.)) through a tempcore process.Type: GrantFiled: March 2, 2021Date of Patent: May 9, 2023Assignee: Hyundai Steel CompanyInventors: Jun Ho Chung, Won Hoe Kim, Jung Wook Park, Hyun Sub Kim
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Patent number: 11629395Abstract: Disclosed is a hot-stamping component, which includes a base steel plate; and a plated layer on the base steel plate and including a first layer, a second layer, and an intermetallic compound portion having an island shape in the second layer, wherein the first layer and the second layer are sequentially stacked, and an area fraction of the intermetallic compound portion with respect to the second layer is an amount of 20% to 60%.Type: GrantFiled: December 2, 2020Date of Patent: April 18, 2023Assignee: Hyundai Steel CompanyInventors: Hye Jin Kim, Kyu Yeon Hwang, Hyun Yeong Jung, Jin Ho Lee, Seung Pill Jung
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Patent number: 11629389Abstract: In accordance with one aspect of the present disclosure, there is provided a steel material for a tailor-welded blank, including 0.04 to 0.06 wt % of carbon (C), 1.2 to 1.5 wt % of manganese (Mn), 0.01 to 0.10 wt % of titanium (Ti), 0.01 to 0.10 wt % of niobium (Nb), and the balance of iron (Fe) and inevitable impurities; having a tensile strength (TS) of 550 MPa or greater, a yield strength (YS) of 300 MPa or greater, and an elongation (EL) of 20% or greater; and having a dual-phase structure of ferrite and martensite.Type: GrantFiled: December 29, 2017Date of Patent: April 18, 2023Assignee: Hyundai Steel CompanyInventors: Byung Gil Yoo, Hyeong Hyeop Do, Chee Woong Song, Do Hak Kim, Young Mun Shin, Soon Geun Jang, Sang Mun Hong
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Publication number: 20230110864Abstract: The present disclosure relates to a steel and a method for manufacturing the steel. Specifically, the present disclosure is characterized by providing a method for providing optimal alloy components that can reduce carburizing thermal deformation by reducing contents of Cr and Mo elements compared to the existing ones, and improving the physical property with fatigue resistance of a carburized steel by adjusting a rolling thermal treatment temperature, a carburizing thermal treatment condition, and the like to increase a fraction of a fine MX precipitate and improve a precipitation strengthening effect.Type: ApplicationFiled: September 30, 2022Publication date: April 13, 2023Applicants: HYUNDAI MOTOR COMPANY, KIA CORPORATION, HYUNDAI STEEL COMPANYInventors: In Beom Lee, Min Woo Kang, Chang Won Kang, Dong Hwi Kim, Sung Min Hong, Seung Nam Gung, Sang Won Lee
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Patent number: 11583909Abstract: A method of manufacturing a hot-stamped part includes: inserting a blank into a heating furnace including a plurality of sections with different temperature ranges; step heating the blank in multiple stages; and soaking the blank at a temperature of about Ac3 to about 1,000° C., wherein in the step of heating the blank, a temperature condition in the heating furnace satisfies the following equation: 0<(Tg?Ti)/Lt<0.025° C./mm, where Tg denotes a soaking temperature (° C.), Ti denotes an initial temperature (° C.) of the heating furnace, and Lt denotes a length (mm) of step heating sections.Type: GrantFiled: December 2, 2020Date of Patent: February 21, 2023Assignee: Hyundai Steel CompanyInventor: Je Youl Kong
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Patent number: 11535294Abstract: Carbon steel for a rack bar contains 0.50 to 0.55% by weight of carbon (C), 0.15 to 0.35% by weight of silicon (Si), 0.75 to 0.95% by weight of manganese (Mn), 0.025% by weight or less of phosphorus (P), 0.025% by weight or less of sulfur (S), 0.65 to 0.85% by weight of chrome (Cr), 0.20% by weight or less of molybdenum (Mo), 0.001 to 0.02% by weight of aluminum (Al), 5 to 50 ppm of boron (B), and iron (Fe) as a remainder and unavoidable impurities. A method for manufacturing the rack bar includes quenching, tempering, and drawing the carbon steel and warm forging the drawn carbon steel.Type: GrantFiled: February 24, 2021Date of Patent: December 27, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION, HYUNDAI STEEL COMPANYInventors: Hyung Gook Lee, Jae Han Lim
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Patent number: 11447842Abstract: A method for manufacturing a high-strength steel bar can include the steps of: reheating a steel slab at a temperature ranging from 1000° C. to 1100° C., the steel slab including a certain amount of carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), copper (Cu), nickel (Ni), molybdenum (Mo), aluminum (Al), vanadium (V), nitrogen (N), antimony (Sb), tin (Sn), and iron (Fe) and other inevitable impurities, The method can further include finish hot-rolling the reheated steel slab at a temperature of 850° C. to 1000° C., and cooling the hot-rolled steel to a martensite transformation start temperature (Ms (° C.)) through a tempcore process.Type: GrantFiled: October 20, 2017Date of Patent: September 20, 2022Assignee: Hyundai Steel CompanyInventors: Jun Ho Chung, Won Hoe Kim, Jung Wook Park, Hyun Sub Kim
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Patent number: 11446901Abstract: A hot-stamped part according to an embodiment of the present invention comprises, as a base layer, a steel comprising: 0.28-0.38 wt % of carbon (C); 0.1-0.4 wt % of silicon (Si); 1.2-2.0 wt % of manganese (Mn); from greater than 0 to 0.020 wt % of phosphorus (P); from greater than 0 to 0.003 wt % of sulfur (S); 0.1-0.5 wt % of chromium (Cr); 0.0015-0.0040 wt % of boron (B); 0.025-0.05 wt % of titanium (Ti); and the remainder of iron (Fe) and inevitable impurities, wherein the microstructure of the base layer is full martensite.Type: GrantFiled: December 26, 2019Date of Patent: September 20, 2022Assignee: Hyundai Steel CompanyInventors: Je Youl Kong, Ji Young Kim, Young Chul Park, Hye Jin Kim, Byung Gil Yoo, Wan Yook, Seung Chae Yoon, Gi Hak Yim, Jeong Hwan Jang