Patents by Inventor Sung Chul Cha
Sung Chul Cha 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).
-
Patent number: 11661649Abstract: Disclosed are a component for a fuel injector and a method for coating the same. The component for the fuel injector may include a base material, a bonding layer laminated on the base material, a support layer laminated on the outer surface of the bonding layer, and an NbSiCN functional layer including an NbCN layer and an SiCN layer and alternately laminated on the outer surface of the support layer, thereby reducing friction, high hardness, shock resistance, heat resistance, and durability of the component for the fuel injector.Type: GrantFiled: December 21, 2020Date of Patent: May 30, 2023Assignee: Hyundai Kefico CorporationInventors: Han Su Park, Heon Joon Park, Sung Chul Cha
-
Publication number: 20210254206Abstract: A ball and a valve seat for a fuel injector, and a method for coating the same are provided to form a Ta—C:H—SiO functional layer having a low frictional characteristic as the outermost layer to reduce a frictional coefficient. A Mo-based material is applied to a bonding layer and a supporting layer for bonding and supporting the Ta—C:H—SiO functional layer is applied to a base material to improve heat resistance. Accordingly, only pure ionic Mo particles are deposited to form the bonding layer and the supporting layer, thereby increasing an adhesive force and a bonding force to improve durability.Type: ApplicationFiled: August 19, 2019Publication date: August 19, 2021Inventors: Heon Joon Park, Hae Hyuk Jung, Sung Chul Cha, Won Ki Chung
-
Publication number: 20210190024Abstract: Disclosed are a component for a fuel injector and a method for coating the same. The component for the fuel injector may include a base material, a bonding layer laminated on the base material, a support layer laminated on the outer surface of the bonding layer, and an NbSiCN functional layer including an NbCN layer and an SiCN layer and alternately laminated on the outer surface of the support layer, thereby reducing friction, high hardness, shock resistance, heat resistance, and durability of the component for the fuel injector.Type: ApplicationFiled: December 21, 2020Publication date: June 24, 2021Inventors: Han Su Park, Heon Joon Park, Sung Chul Cha
-
Patent number: 10718039Abstract: Disclosed herein is a steel composition with improvement in tensile strength and fatigue life, which can be used for a vehicle part such as a vehicle suspension system.Type: GrantFiled: November 3, 2016Date of Patent: July 21, 2020Assignee: Hyundai Motor CompanyInventors: Sung Chul Cha, Soon Woo Kwon, Hyuk Kim
-
Publication number: 20200217287Abstract: The present disclosure relates to a ball and a valve seat for a fuel injector, in which an SiO-DLC functional layer having low friction properties is formed as an outermost layer in order to reduce a friction coefficient, a Mo-based material is applied to a bonding layer and a supporting layer for bonding the SiO-DLC functional layer to a base material and supporting the same to improve the heat resistance thereof, and only Mo particles of a pure ion state are deposited so as to form the bonding layer and the support layer, such that adhesive force and bonding force are increased to thus improve durability; and to a method for coating the same.Type: ApplicationFiled: June 4, 2018Publication date: July 9, 2020Inventors: Sung Chul Cha, Heon Joon Park, Joon Hee Park, Hye Seong Han
-
Patent number: 10689736Abstract: An ultra-high-strength spring steel for an engine valve spring steel comprises, by weight: 0.5-0.7% of carbon (C), 1.3-2.3% of silicon (Si), 0.6-1.2% of manganese (Mn), 0.6-1.2% of chrome (Cr), 0.1-0.5% of molybdenum (Mo), 0.05-0.8% of nickel (Ni), 0.05-0.5% of vanadium (V), 0.05-0.5% of niobium (Nb), 0.05-0.3% of titanium (Ti), 0.001-0.01% of boron (B), 0.01-0.52% of tungsten (W), 0.3% or less (0% exclusive) of copper (Cu), 0.3% or less (0% exclusive) of aluminum (Al), 0.03% or less (0% exclusive) of nitrogen (N), 0.003% or less (0% exclusive) of oxygen (O), and a remainder of Fe and other inevitable impurities, based on 100% by weight of the ultra-high-strength spring steel.Type: GrantFiled: April 26, 2016Date of Patent: June 23, 2020Assignees: Hyundai Motor Company, Hyundai Steel Company, Korea Institute of Science and TechnologyInventors: Sung Chul Cha, Bong Lae Jo, Sang Min Song, Jae Hyeok Shim
-
Patent number: 10544486Abstract: Disclosed are nickel alloys for exhaust system components having improved tensile strength, fatigue strength, oxidation resistance, and abrasion resistance at a high temperature condition. A nickel alloy for exhaust system components according to an embodiment is used for exhaust system components of a vehicle engine, the nickel alloy including: 0.01 to 0.2 wt % of C; 0.1 to 1.0 wt % of Si; 0.1 to 1.5 wt % of Mn; 8 to 24 wt % of Cr; 0.1 to 2.5 wt % of Nb; 0.1 to 4.0 wt % of Al; 0.01 to 1 wt % of Co; 0.01 to 5.0 wt % of Mo; 0.01 to 4 wt % of W; 0.1 to 1 wt % of Ta; 0.1 to 2.4 wt % of Ti; 4.0 to 11.0 wt % of Fe; a remainder being Ni; and inevitable impurities.Type: GrantFiled: December 12, 2016Date of Patent: January 28, 2020Assignee: HYUNDAI MOTOR COMPANYInventors: Min Woo Kang, Sung Chul Cha, Joong Kil Choe
-
Patent number: 10513765Abstract: Disclosed herein is stainless steel having excellent tensile strength, fatigue strength, oxidation resistance at high temperature environment. According to an exemplary embodiment of the present invention, the stainless steel having excellent oxidation resistance at high temperature includes C: 0.01 to 0.2%, Si: 0.1 to 1.0%, Mn: 0.1 to 2.0%, Cr: 12.0 to 30.0%, V: 0.01 to 0.5%, Nb: 0.01 to 0.5%, Al: 0.1 to 4.0%, Co: 0.01 to 5.0%, Mo: 0.01 to 4.0%, W: 0.01 to 4.0%, B: 0.001 to 0.15%, Ni: 5.0 to 20.0% as wt %, the balance Fe, and other inevitable impurities.Type: GrantFiled: December 13, 2016Date of Patent: December 24, 2019Assignee: HYUNDAI MOTOR COMPANYInventors: Sung Chul Cha, Ik Soo Kim, Young Joon Kang
-
Patent number: 10494705Abstract: A steel composition is provided and includes carbon of about 0.5 to 0.7 wt %; silicon of about 1.3 to 2.3 wt %; manganese of about 0.6 to 1.2%; chromium of about 0.6 to 1.2 wt %; molybdenum of about 0.1 to 0.5 wt %; nickel of about 0.05 to 0.8 wt %; vanadium of about 0.05 to 0.5 wt %; niobium of about 0.05 to 0.5 wt %; titanium of about 0.05 to 0.3 wt %; cobalt of about 0.01 to 3 wt %; zirconium of about 0.001 to 0.2 wt %; yttrium of about 0.01 to 1.5 wt %; copper of about 0.3% or less but greater than 0 wt %; aluminum of about 0.3% or less but greater than 0 wt %; nitrogen of about 0.03% or less but greater than 0 wt %; oxygen of about 0.003% or less but greater than 0 wt %. Additionally, a balance iron, based on the total weight is included.Type: GrantFiled: June 10, 2016Date of Patent: December 3, 2019Assignees: Hyundai Motor Company, Hyundai Steel CompanyInventors: Sung Chul Cha, Hyung Oh Ban, Seung Hyun Hong, Chul Woo Park
-
Patent number: 10487381Abstract: An ultrahigh-strength spring steel, used as steel for a vehicle engine valve spring may include 0.5 to 0.7 wt % of C, 1.3 to 2.5 wt % of Si, 0.6 to 1.2 wt % of Mn, 0.6 to 1.5 wt % of Cr, 0.01 to 0.5 wt % of Mo, 0.01 to 0.9 wt % of Ni, 0.5 wt % or less (excluding 0 wt %) of V, 0.5 wt % or less (excluding 0 wt %) of Nb, 0.3 wt % or less (excluding 0 wt %) of Ti, 1.0 wt % or less (excluding 0 wt %) of Co, 0.1 wt % or less (excluding 0 wt %) of B, 0.3 wt % or less (excluding 0 wt %) of W, 0.3 wt % or less (excluding 0 wt %) of Cu, 0.3 wt % or less (excluding 0 wt %) of Al, 0.03 wt % or less (excluding 0 wt %) of N, 0.003 wt % or less (excluding 0 wt %) of O, and a remainder of Iron (Fe) and inevitable impurities.Type: GrantFiled: November 14, 2016Date of Patent: November 26, 2019Assignee: Hyundai Motor CompanyInventors: Sung Chul Cha, Min Woo Kang, Hye Min Jo, Seung Hyun Hong
-
Patent number: 10487380Abstract: Disclosed herein is high-strength special steel containing about 0.1 to 0.5 wt % of carbon (C), about 0.1 to 2.3 wt % of silicon (Si), about 0.3 to 1.5 wt % of manganese (Mn), about 1.1 to 4.0 wt % of chromium (Cr), about 0.3 to 1.5 wt % of molybdenum (Mo), about 0.1 to 4.0 wt % of nickel (Ni), about 0.01 to 0.50 wt % of vanadium (V), about 0.05 to 0.50 wt % of titanium (Ti), and the remainder of iron (Fe) and other inevitable impurities.Type: GrantFiled: December 9, 2016Date of Patent: November 26, 2019Assignee: Hyundai Motor CompanyInventors: Sung Chul Cha, Yong Bo Sim, Seung Hyun Hong
-
Patent number: 10487382Abstract: Disclosed herein is a high strength special steel including, by weight %: carbon (C): from about 0.1 to 0.5%; silicon (Si): from about 0.1 to 2.3%; manganese (Mn): from about 0.3 to 1.5%; chromium (Cr): from about 1.1 to 4.0%; molybdenum (Mo): from about 0.3 to 1.5%; nickel (Ni): from about 0.1 to 4.0%; vanadium (V): from about 0.01 to 0.50%; boron (B): from about 0.001 to 0.010%; niobium (Nb): from about 0.05 to 0.50%; and the balance of iron (Fe) and inevitable impurities.Type: GrantFiled: December 9, 2016Date of Patent: November 26, 2019Assignee: Hyundai Motor CompanyInventors: Sung Chul Cha, Jong Hwi Park, Dong Lim Seo, Seung Hyun Hong
-
Patent number: 10400324Abstract: Disclosed herein is a method of treating a composite piston pin, including: preparing the piston pin of which at least surface layer includes a composite material including a reinforcing fiber and a resin; improving roughness by processing the surface layer of the piston pin; and forming a coating layer on the surface layer processed to reduce a friction coefficient of the piston pin.Type: GrantFiled: November 29, 2016Date of Patent: September 3, 2019Assignee: Hyundai Motor CompanyInventors: Sung Chul Cha, June Ho Yang, Hee Sam Kang, Chi Hoon Choi, Sang Yoon Park, Jong Dae Lim, Seung Hyun Hong
-
Publication number: 20190242005Abstract: Disclosed herein is a method of treating a composite piston pin, including: preparing the piston pin of which at least surface layer includes a composite material including a reinforcing fiber and a resin; improving roughness by processing the surface layer of the piston pin; and forming a coating layer on the surface layer processed to reduce a friction coefficient of the piston pin.Type: ApplicationFiled: April 16, 2019Publication date: August 8, 2019Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Sung Chul CHA, June Ho Yang, Hee Sam Kang, Chi Hoon Choi, Sang Yoon Park, Jong Dae Lim, Seung Hyun Hong
-
Patent number: 10329650Abstract: Disclosed herein is a high manganese steel including: 0.5 to 1.2 wt % of carbon (C), 0.1 to 2.3 wt % of silicon (Si), 15 to 30 wt % of manganese (Mn), 7.0 to 13.0 wt % of aluminum (Al), 0.01 to 3.0 wt % of nickel (Ni), 0.01 to 0.5 wt % of chromium (Cr), 0.01 to 0.4 wt % of molybdenum (Mo), 0.01 to 0.5 wt % of vanadium (V), 0.005 to 0.3 wt % of niobium (Nb), 0.005 to 0.3 wt % of titanium (Ti), and remainder iron (Fe) and other inevitable impurities.Type: GrantFiled: December 12, 2016Date of Patent: June 25, 2019Assignee: Hyundai Motor CompanyInventors: Sung Chul Cha, Seong Guk Son, Seung Hyun Hong, Soon Woo Kwon
-
Patent number: 10308996Abstract: Disclosed is a steel composition for hot stamping that comprises carbon (C) in an amount of about 0.22 to about 0.25 wt %, silicon (Si) in an amount of about 0.2 to about 0.3 wt %, manganese (Mn) in an amount of about 1.2 to about 1.4 wt %, titanium (Ti) in an amount of about 0.02 to about 0.05 wt %, chromium (Cr) in an amount of about 0.11 to about 0.2 wt %, boron (B) in an amount of about 0.005 to about 0.01 wt %, zinc (Zr) in an amount of about 0.005 to about 0.02 wt %, niobium (Nb) in an amount of about 0.01 to about 0.05 wt %, tungsten (W) in an amount of about 0.1 to about 0.5 wt %, iron (Fe) constituting the remaining balance of the steel composition, all the wt % based on the total amount of the steel composition.Type: GrantFiled: November 9, 2015Date of Patent: June 4, 2019Assignee: Hyundai Motor CompanyInventors: Moon Ki Bae, Seung Hyun Hong, Sung Chul Cha
-
Patent number: 10060014Abstract: A bearing steel includes 1.0 to 1.3 wt % carbon; 0.9 to 1.6 wt % silicon; 0.5 to 1.0 wt % manganese; 1.5 to 2.5 wt % nickel; 1.5 to 2.5 wt % chromium; 0.2 to 0.5 wt % molybdenum; 0.01 to 0.06 wt % aluminum; 0.01 to 0.1 wt % copper; at least one selected from the group consisting of more than 0 wt % and less than 0.38 wt % vanadium and more than 0 wt % and less than 0.02 wt % niobium; and a balance of iron.Type: GrantFiled: October 20, 2015Date of Patent: August 28, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Sung-Chul Cha, Si-Yup Lee, Young-Sang Ko, Moon-Ki Bae, Seung-Hyun Hong
-
Patent number: 10000831Abstract: Disclosed are a steel composition and a spring steel comprising the same. The steel composition comprises: an amount of about 0.51 to 0.57% by weight of carbon (C), an amount of about 1.35 to 1.45% by weight of silicon (Si), an amount of about 0.95 to 1.05% by weight of manganese (Mn), an amount of about 0.60 to 0.80% by weight of chromium (Cr), an amount of about 0.25 to 0.35% by weight of copper (Cu), an amount of about 0.05 to 0.15% by weight of vanadium (V), an amount of about 0.25 to 0.35% by weight of nickel (Ni), an amount of about 0.003 to 0.015% by weight of phosphorus (P), an amount of about 0.003 to 0.010% by weight of sulfur (S), and iron (Fe) constituting the remaining balance of the steel composition, all the % by weights are based on the total weight of the steel composition.Type: GrantFiled: May 11, 2016Date of Patent: June 19, 2018Assignees: Hyundai Motor Company, Hyundai Steel CompanyInventors: Jeen Woo Park, Sung Chul Cha, Jong Hwi Park, Kyu Ho Lee
-
Patent number: 9957595Abstract: A carburized alloy steel includes, based on a total weight of the carburized alloy steel, 0.1 to 0.35 wt % carbon, 0.1 to 2.0 wt % silicon, 0.1 to 1.5 wt % manganese, 1.5 to 3.0 wt % chromium, 0.2 to 0.5 wt % molybdenum, greater than 0 to 0.07 wt % niobium, and a balance of iron.Type: GrantFiled: October 22, 2015Date of Patent: May 1, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Sung-Chul Cha, Moon-Ki Bae, Seung-Hyun Hong, Si-Yup Lee
-
Publication number: 20180100221Abstract: Disclosed herein is stainless steel having excellent tensile strength, fatigue strength, oxidation resistance at high temperature environment. According to an exemplary embodiment of the present invention, the stainless steel having excellent oxidation resistance at high temperature includes C: 0.01 to 0.2%, Si: 0.1 to 1.0%, Mn: 0.1 to 2.0%, Cr: 12.0 to 30.0%, V: 0.01 to 0.5%, Nb: 0.01 to 0.5%, Al: 0.1 to 4.0%, Co: 0.01 to 5.0%, Mo: 0.01 to 4.0%, W: 0.01 to 4.0%, B: 0.001 to 0.15%, Ni: 5.0 to 20.0% as wt %, the balance Fe, and other inevitable impurities.Type: ApplicationFiled: December 13, 2016Publication date: April 12, 2018Applicant: HYUNDAI MOTOR COMPANYInventors: Sung Chul Cha, Ik Soo Kim, Young Joon Kang