1279 patents
Page 8 of 64
Utility
Vehicle Body Structure
5 May 22
This vehicle body structure includes a frame member with a first top section, a corner section, a vertical wall section, and a second top section, and a first support section and a second support section provided at the second top section.
Masahiko ABE, Hiroaki KUBOTA, Daisuke MAEDA, Yuri TODA
Filed: 5 Mar 20
Utility
Bar
5 May 22
A bar includes a titanium alloy containing an α phase and a β phase, in which the titanium alloy contains, as a chemical composition, by mass %: Al: 4.5% to 6.4%; Fe: 0.5% to 2.1%; C: 0.01% or less; N: 0.05% or less; O: 0.25% or less; V: 0.10% or less; Si: 0% to 0.40%; Ni: 0% to 0.15%; Cr: 0% to 0.25%; Mn: 0% to 0.25%; and a remainder including Ti and impurities, an area ratio of the β phase in a metallographic structure of the titanium alloy is 20% or less, and an average minor axis length of grains of the β phase is 2.0 μm or less.
Ryotaro MIYOSHI, Tomonori KUNIEDA, Kazuhiro TAKAHASHI
Filed: 6 Mar 20
Utility
Steel Pipe for Fuel Injection Pipe, and Fuel Injection Pipe Using Same
5 May 22
A steel pipe for a fuel injection pipe has a chemical composition consisting of, by mass %: C: 0.17 to 0.27%, Si: 0.05 to 0.40%, Mn: 0.30 to 2.00%, P: 0.020% or less, S: 0.0100% or less, O: 0.0040% or less, Ca: 0.0010% or less, Al: 0.005 to 0.060%, N: 0.0020 to 0.0080%, Ti: 0.005 to 0.015%, Nb: 0.015 to 0.045%, Cr: 0 to 1.00%, Mo: 0 to 1.00%, Cu: 0 to 0.50%, Ni: 0 to 0.50%, V: 0 to 0.15%, and the balance: Fe and impurities.
Taizo MAKINO, Masahiro YAMAZAKI, Tomohiko OMURA, Yuji ARAI, Osamu ENDO, Naoki SERIZAWA, Tatsuya MASUDA
Filed: 13 Feb 20
Utility
Manufacturing Method of Member, Manufacturing Method of Member for Vehicle, and Die and Punch
28 Apr 22
A manufacturing method of a member according to an aspect of the present invention is a manufacturing method of a member including a specific three-dimensional tubular portion, the manufacturing method including: a U-forming step of performing U-forming on metal material sheet using a U-forming die and punch including a U-forming punch to manufacture a U-formed article having a recessed cross-sectional shape; and an O-forming step of causing side end portions of the U-formed article to abut each other by an O-forming die to form abutting portions, in which a forming condition ratio a=Du/Do is set to 0.85 to 0.95.
Masahiko SATO, Tohru YOSHIDA
Filed: 27 Mar 20
Utility
Automobile Door
28 Apr 22
Provided is an automobile door (600) including: an exterior material (110); a first impact absorbing member (122); and a second impact absorbing member (124), in which the first impact absorbing member (122) is disposed to traverse the exterior material (110) so as to extend between both end portion regions in a vehicle height direction, the first impact absorbing member (122) is disposed on a vehicle interior side from the second impact absorbing member (124), the second impact absorbing member (124) is disposed to traverse the exterior material (110) so as to extend between both end portion regions in a vehicle length direction, the second impact absorbing member (124) is disposed adjacent to an inner surface of the exterior material (110), and at a portion excluding both of the end portion regions in the vehicle height direction, both of the end portion regions in the vehicle length direction, and an intersection portion, bending rigidity in a vehicle width direction of a cross section perpendicular to an extending direction of the first impact absorbing member (122) is larger than bending rigidity in the vehicle width direction of a cross section perpendicular to an extending direction of the second impact absorbing member (124).
Toshiya SUZUKI, Yoshiaki NAKAZAWA
Filed: 15 Jan 20
Utility
Automobile Inner Panel and Automobile Panel
28 Apr 22
In an automobile inner panel and an automobile panel that includes the automobile inner panel, panel rigidity of the panel is secured while achieving a weight reduction.
Ryuichi NISHIMURA, Koichi HAMADA, Atsuo KOGA, Takeshi KAWACHI, Yasunori SAWA, Tohru YOSHIDA
Filed: 27 Dec 19
Utility
High-strength Steel Sheet Having Excellent Moldability and Impact Resistance, and Method for Manufacturing High-strength Steel Sheet Having Excellent Moldability and Impact Resistance
28 Apr 22
A high-strength steel sheet includes a chemical composition including: by mass %, C: 0.080 to 0.500%, Si: 2.50% or less, Mn: 0.50 to 5.00%, P: 0.100% or less, S: 0.0100% or less, Al: 0.001 to 2.500%, N: 0.0150% or less, O: 0.0050% or less, and the balance: Fe and inevitable impurities.
Hiroyuki KAWATA, Eisaku SAKURADA, Kohichi SANO, Takafumi YOKOYAMA
Filed: 11 Dec 18
Utility
Grain-oriented Electrical Steel Sheet, and Method of Manufacturing Same
28 Apr 22
A grain-oriented electrical steel sheet includes: a steel sheet and optionally an insulation coating formed on the steel sheet, in which, in a case where a heat treatment of performing retention at 800° C. for 2 hours is performed, regarding a time-magnetostriction waveform (t−λ waveform) when magnetized to 1.7 T, a peak value of a difference waveform obtained by subtracting the time-magnetostriction waveform after the heat treatment from the time-magnetostriction waveform before the heat treatment is 0.01×10−6 or more and 0.20×10−6 or less, and a difference obtained by subtracting an iron, loss before the heat treatment from an iron loss after the heat treatment is 0.03 W/kg or more and 0.17 W/kg or less.
Satoshi ARAI, Masataka IWAKI, Masato MIZOKAMI, Hideyuki HAMAMURA, Takeo ARAMAKI, Hirotoshi TADA
Filed: 28 Jan 20
Utility
Hot-stamping Formed Body
28 Apr 22
A hot-stamping formed body has a predetermined chemical composition and a microstructure including, by area ratio, 90% to 100% of martensite and 0% to 10% of a remainder in the microstructure.
Shingo FUJINAKA, Yuri TODA, Daisuke MAEDA
Filed: 19 Mar 20
Utility
Hot Dip Galvanized Steel Sheet and Method for Producing Same
28 Apr 22
Provided are a hot dip galvanized steel sheet comprising a base steel sheet wherein the base steel sheet has a predetermined chemical composition, and contains ferrite: 50% or less, retained austenite: 30% or less, tempered martensite: 5% or more, fresh martensite: 10% or less, and pearlite and cementite in total: 5% or less, remaining structures consist of bainite, and a number ratio of tempered martensite with a Mn concentration profile satisfying [Mn]b/[Mn]a>1.2 and [Mn]a/[Mn]<2.0 ([Mn] is the Mn content in the base steel sheet, [Mn]a is the average Mn concentration in the tempered martensite, and [Mn]b is the Mn concentration at the interfaces of different phases of the tempered martensite and ferrite phase and bainite phase) is 0.2 or more with respect to the total number of tempered martensite, and a method for producing the same.
Takafumi YOKOYAMA, Hiroyuki KAWATA, Kunio HAYASHI, Yuji YAMAGUCHI, Satoshi UCHIDA
Filed: 6 Feb 20
Utility
Duplex Stainless Seamless Steel Pipe and Method for Producing Duplex Stainless Seamless Steel Pipe
28 Apr 22
Kosei KATO, Yusaku TOMIO
Filed: 23 Apr 20
Utility
Threaded Connection for Pipes
28 Apr 22
A threaded connection for pipes includes a pin, a box, a shoulder part plating layer, and a non-shoulder part plating layer.
Kazuya ISHII, Kunio GOTO, Masaaki SUGINO, Yousuke OKU
Filed: 7 Feb 20
Utility
Saddle-shaped press-molded article manufacturing method, pressing apparatus, and manufacturing method to manufacture saddle-shaped press-molded article
26 Apr 22
According to the present disclosure, a manufacturing method for a saddle-shaped press-molded article includes curling a blank at a top plate configuration location of the blank that will form a top plate portion, applying the curl with a first force acting from an inner face side toward an outer face side of the blank at the top plate configuration location, applying the curl with a net force configured by second forces acting in mutually facing directions and a third force acting in the opposing direction to the first force at the outer face side of respective vertical wall configuration locations of the blank that will be molded into vertical wall portions, and in a state in which the top plate configuration location is curled, restraining end portion inverted ridge configuration location that will be molded into end portion inverted ridge portion, the top plate configuration location, the vertical wall configuration locations, and end portion flange configuration location that will be molded into end portion flange.
Satoshi Shirakami, Yoshiaki Nakazawa
Filed: 7 May 19
Utility
Hot-rolled steel sheet and method for manufacturing same
26 Apr 22
A hot-rolled steel sheet according to an aspect of the present invention has a predetermined chemical composition, in which, in a location at a depth of ¼ of a sheet thickness from a surface, an area ratio of ferrite is 10% to 55%, a total area ratio of bainite and martensite is 45% to 90%, a total area ratio of the ferrite, the bainite, and the martensite is 90% or more, an average crystal grain size is 12.0 μm or less, in a texture measured in a sheet thickness central portion, a maximum pole density of orientation groups of {100} <011>, {211} <011>, {311} <011>, {110} <011>, and {332} <113> is 8.0 or less, a total of pole densities of {211} <011> and {332} <113> is 10.0 or less, and a tensile strength is 950 MPa or more.
Mitsuru Yoshida, Nobusato Kojima, Yuuki Kanzawa, Kohhei Kamiya
Filed: 6 Jul 18
Utility
Seamless steel pipe and method for producing the seamless steel pipe
26 Apr 22
The seamless steel pipe of the present embodiment consists of in mass %, C: 0.21 to 0.35%, Si: 0.10 to 0.50%, Mn: 0.05 to 1.00%, P: 0.025% or less, S: 0.010% or less, Al: 0.005 to 0.100%, N: 0.010% or less, Cr: 0.05 to 1.50%, Mo: 0.10 to 1.50%, Nb: 0.010 to 0.050%, B: 0.0003 to 0.0050%, and Ti: 0.002 to 0.050%, the balance being Fe and impurities.
Atsushi Soma, Yuji Arai, Yosuke Tatebayashi, Keisuke Furo, Takenori Kuramoto, Hiroki Kamitani, Kouji Yamane
Filed: 18 May 17
Utility
Threaded connection for steel pipe
26 Apr 22
A threaded connection for steel pipe is provided that improves its internal-pressure sealability while maintaining the high external-pressure sealability of a threaded connection having a nose used in a steel pipe with large diameter and large wall thickness.
Masaaki Sugino, Yousuke Oku, Keita Inose
Filed: 2 Oct 18
Utility
Thread shape measuring apparatus and measuring method
26 Apr 22
A thread shape measuring apparatus includes: a first illuminating unit that has an optical axis orthogonal to a cross section including a thread axis, and illuminates the thread portion; a second illuminating unit that has an optical axis that forms an angle θ larger than a lead angle γ of the thread portion with respect to the direction orthogonal to the cross section and illuminates the thread portion; an image-capturing unit that has a visual axis parallel to the optical axis of the first illuminating unit, includes a telecentric lens, has a focusing position matching the cross section, and detects, out of the light emitted from the first illuminating unit or the second illuminating unit, light that has not been blocked by the thread portion to capture an image of the detected light; and an operation unit that calculates a shape of the thread portion based on the captured image.
Tatsuro Honda, Shinichi Oshima, Yoshito Isei, Kenshiro Oie, Takenori Kuramoto, Takanori Tanaka
Filed: 26 Apr 19
Utility
Method of Manufacturing Press-formed Product and Press Line
21 Apr 22
A method of manufacturing a press-formed product includes: capturing the amount of warp in a sheet to be pressed separately for each sheet; and using a die 6, a punch 7, and a movable mold part to press-form the sheet into a press-formed product.
Ryuichi NISHIMURA, Toshiya SUZUKI
Filed: 16 Jan 20
Utility
Blast Furnace Operation Method
21 Apr 22
A blast furnace operation method according to one aspect of the present invention includes: a process of acquiring a correlation between a carbon consumption in reducing gas and a reduction InputΔC in specific carbon consumption caused by blowing the reducing gas into the blast furnace per molar ratio C/H of carbon atoms to hydrogen atoms in the reducing gas; a process of determining a carbon consumption in the reducing gas where the reduction InputΔC in specific carbon consumption is a predetermined target value or higher on the basis of the correlation acquired per C/H; and a process of adjusting the amount of the reducing gas blown into the blast furnace on the basis of the determined carbon consumption in the reducing gas and the carbon proportion in the reducing gas.
Hiroshi SAKAI, Koki NISHIOKA, Kaoru NAKANO
Filed: 17 Feb 20
Utility
Hot-rolled Steel Sheet
21 Apr 22
This hot-rolled steel sheet has a predetermined chemical composition, in which a metal microstructure contains, by area %, 3.0% or more of residual austenite, has a ratio L52/L7 of a length L52 of a grain boundary having a crystal orientation difference of 52° to a length L7 of a grain boundary having a crystal orientation difference of 7° about a <110> direction of 0.10 or more and 0.18 or less, has a standard deviation of a Mn concentration of 0.60 mass % or less, and has a tensile strength of 980 MPa or more.
Hiroshi SHUTO, Koutarou HAYASHI, Hiroshi KAIDO, Akifumi SAKAKIBARA, Jun ANDO, Tetsu ASATO
Filed: 30 Jan 20