1279 patents
Page 3 of 64
Utility
Non-oriented electrical steel sheet and method for manufacturing thereof
26 Jul 22
A non-oriented electrical steel sheet includes C: 0 to 0.0050 mass %, Si: 0.50 to 2.70 mass %, Mn: 0.10 to 3.00 mass %, Al: 1.00 to 2.70 mass %, and P: 0.050 to 0.100 mass %.
Satoshi Kano, Takeaki Wakisaka, Ichiro Tanaka
Filed: 10 Mar 16
Utility
Composition, threaded joint for pipes including solid lubricant coating formed from the composition, and method for producing the threaded joint for pipes
26 Jul 22
A threaded joint for pipes disclosed herein includes a pin and a box.
Kunio Goto
Filed: 15 Sep 16
Utility
Steel Sheet for Hot Stamping
21 Jul 22
A steel sheet for hot stamping according to the present invention has a plating layer being attached in an amount of 10 g/m2 or more and 90 g/m2 or less and having a Ni content of 10 mass % or more and 25 mass % or less with a remainder including Zn and impurities on a surface of a base steel sheet having a predetermined chemical composition, in a surface layer region, 15.0% or more of the crystal grains of one or two kinds of unauto-tempered martensite and lower bainite are included in terms of area percentage, and the average dislocation density is 4×1015 m/m3.
Yuji SAKIYAMA, Yuri TODA, Kazuo HIKIDA
Filed: 28 May 20
Utility
Hot-stamped Article
21 Jul 22
A hot-stamped article according to the present invention has a plating layer being attached in an amount of 10 g/m2 or more and 90 g/m2 or less and having a Ni content of 10 mass % or more and 25 mass % or less with a remainder including Zn and an impurity on a surface of a base steel sheet having a predetermined chemical composition, a surface layer region includes 90.0 % or more of martensite in terms of area percentage, and a concentration of Ni in a prior austenite grain boundary in the surface layer region is 5.5 mass % or more.
Yuji SAKIYAMA, Yuri TODA, Tomohito TANAKA, Kazuo HIKIDA
Filed: 28 May 20
Utility
Plated Steel Sheet for Hot Stamping
21 Jul 22
The present invention relates to a plated steel sheet for hot stamping comprising a steel sheet and a Zn—Ni plating layer formed on at least one surface of the steel sheet, wherein the Zn—Ni plating layer has an Ni concentration of 8 mass % or more, a plating deposition amount of 10 g/m2 or more and 90 g/m2 or less per surface, and an average grain size of 50 nm or more, and a difference between a diffraction peak of the Zn—Ni plating layer after heat treating the plated steel sheet for hot stamping at 200° C. for 1 hour, and a diffraction peak of the Zn—Ni plating layer before heat treating it, is 0.3° or less.
Takehiro TAKAHASHI, Daisuke MAEDA, Hiroshi TAKEBAYASHI
Filed: 29 May 20
Utility
Front axle beam and production method thereof
19 Jul 22
The production method disclosed is a method for producing a front axle beam.
Kenji Tamura, Kenji Imanishi, Sam Soo Hwang, Kunihiro Yabuno, Kunihiro Yoshida, Koichiro Ishihara
Filed: 3 Apr 18
Utility
Threaded connection for steel pipe
19 Jul 22
Yousuke Oku, Sadao Douchi
Filed: 24 Jul 19
Utility
Titanium alloy material
19 Jul 22
A titanium alloy material contains: in mass %, Cu: 0.7% to 1.4%; Sn: 0.5% to 1.5%; Si: 0.10% to 0.45%; Nb: 0.05% to 0.50%; Fe: 0.00% to 0.08%; O: 0.00% to 0.08%; and the balance composed of Ti and impurities, in which in a structure, an area fraction of an α phase is 96.0% or more and an area fraction of an intermetallic compound is 1.0% or more, and an average crystal grain size of the α phase is 10 μm or more and 100 μm or less and an average grain size of the intermetallic compound is 0.1 to 3.0 μm.
Hidenori Takebe, Sosuke Nishiwaki, Tomonori Kunieda
Filed: 7 Feb 18
Utility
Threaded connection for pipes or tubes and method for producing the threaded connection for pipes or tubes
19 Jul 22
This invention provides a threaded connection for pipes or tubes having excellent misalignment resistance and high torque on shoulder resistance, and also having excellent corrosion resistance properties, as well as a method for producing the threaded connection for pipes or tubes.
Kunio Goto
Filed: 10 May 18
Utility
Spring steel
19 Jul 22
There is provided a spring steel including predetermined chemical composition, in which ([Ti mass %]−3.43×[N mass %])/[S mass %]>4.0, and [Ni mass %]+[Cu mass %]<0.75 are satisfied, and an appearance frequency of MnS is less than 20% among inclusions having an equivalent circle diameter of 1 μm or more which are observed at a ¼ position of a diameter from a surface.
Takahisa Suzuki, Suguru Yoshida, Yutaka Neishi
Filed: 26 Jan 17
Utility
Threaded connection for steel pipes
19 Jul 22
The disclosed threaded connection for steel pipes includes a pin including a tapered male thread part and a shoulder part, and a box including a tapered female thread part and a shoulder part.
Masaaki Sugino
Filed: 1 Jul 19
Utility
Grain-oriented electrical steel sheet
19 Jul 22
A grain-oriented electrical steel sheet according to the present embodiment is a grain-oriented electrical steel sheet having a groove formed on a surface, in which, in a cross section of the grain-oriented electrical steel sheet orthogonal to the groove, a KAM value is 0.1 or more and 3.0 or less in a region on a central side in a thickness direction of the grain-oriented electrical steel sheet with respect to the groove, the region being surrounded by a square having one side in contact with a groove bottom of the groove and having a length of 50 μm in each side.
Hideyuki Hamamura, Satoshi Arai, Takashi Kataoka, Shunsuke Okumura
Filed: 26 Feb 19
Utility
Groove Processing Device and Groove Processing Method
14 Jul 22
A groove processing device (100) that forms a groove in a surface of an object using laser beams (LB) includes: a light source device (11) that outputs the laser beams (LB); a polygon mirror (10) that reflects the laser beams output from the light source device (11); a condensing optical system that is provided on an optical path of the laser beams (LB) reflected by the polygon mirror (11) and focuses the laser beams (LB); and a shielding plate (35) that is provided between the condensing optical system and the object at a position which blocks some of the laser beams (LB) focused through the condensing optical system and blocks some of the laser beams (LB).
Hideyuki HAMAMURA
Filed: 13 May 20
Utility
Groove Processing Device and Groove Processing Method
14 Jul 22
A groove processing device (100) that forms a groove in a surface of an object using a laser beam includes: a light source device (11) that outputs the laser beam; a polygon mirror (10) that reflects the laser beam output from the light source device (11); and an optical system that is provided on an optical path of the laser beam reflected from the polygon mirror (10) and includes a condensing portion (13A) which transmits the laser beam reflected from one surface of the polygon mirror (10) so as to be focused on the surface of the object and a non-condensing portion (13B) which is provided outside the condensing portion (13A) and transmits the laser beam reflected from a corner portion, in which two adjacent surfaces of the polygon mirror (10) meet, so as not to be focused on the surface of the object.
Hideyuki HAMAMURA
Filed: 13 May 20
Utility
Plated Steel Sheet for Hot Stamping
14 Jul 22
The present invention relates to a plated steel sheet for hot stamping comprising a steel sheet and a Zn—Ni plating layer formed on at least one surface of the steel sheet, wherein the Zn—Ni plating layer has an Ni concentration of 8 mass % or more, a plating deposition amount of 10 g/m2 or more and 90 g/m2 or less per surface, and an average grain size of 50 nm or less.
Takehiro TAKAHASHI, Daisuke MAEDA, Hiroshi TAKEBAYASHI
Filed: 29 May 20
Utility
Automobile Undercarriage Part
14 Jul 22
Kenichiro OTSUKA, Masafumi AZUMA, Yoichiro MORI, Shinji KODAMA, Masahiro MATSUBA
Filed: 27 Mar 20
Utility
Threaded Connection for Steel Pipe
14 Jul 22
Keita INOSE, Masaaki SUGINO, Shin UGAI, Hikari NAKANO
Filed: 7 Aug 20
Utility
Nickel-containing steel for low temperature
12 Jul 22
This nickel-containing steel for low temperature includes, as a chemical composition, by mass %: C: 0.020% to 0.070%; Si: 0.03% to 0.30%; Mn: 0.20% to 0.80%; Ni: 12.5% to 17.4%; Al: 0.010% to 0.060%; N: 0.0015% to 0.0060%; and O: 0.0007% to 0.0030%, in which a metallographic structure contains 2.0% to 30.0% of an austenite phase by volume fraction %, in a thickness middle portion of a section parallel to a rolling direction and a thickness direction, an average grain size of prior austenite grains is 3.0 μm to 20.0 μm, and an average aspect ratio of the prior austenite grains is 1.0 to 2.9.
Manabu Hoshino, Tetsuya Namegawa, Shinichi Omiya, Takayuki Kagaya
Filed: 26 Oct 17
Utility
Negative electrode active material, negative electrode, and battery
12 Jul 22
The negative electrode active material according to the present embodiment includes alloy particle containing an alloy component and oxygen of 0.50 to 3.00 mass %.
Sukeyoshi Yamamoto, Tatsuo Nagata, Koji Moriguchi
Filed: 17 Jul 18
Utility
Steel sheet and manufacturing method therefor
5 Jul 22
A steel sheet has a chemical composition with a steel structure containing, by volume fraction, soft ferrite: 0-30%, retained austenite: 3-40%, fresh martensite: 0-30%, pearlite and cementite: 0-10%, and a remainder including hard ferrite.
Takafumi Yokoyama, Kohichi Sano, Riki Okamoto, Hiroyuki Kawata, Eisaku Sakurada, Yuji Yamaguchi, Kazuki Shiokawa, Yuichi Nakahira, Kohei Ueda, Masahiro Nakata, Satoshi Uchida
Filed: 30 Mar 18