Nippon Steel & Sumitomo Metal Corporation

www.nssmc.co.jp
Chiba, Japan

Nippon Steel & Sumitomo Metal Corporation , was formed in 2012 with the merger of Nippon Steel and Sumitomo Metal. Nippon Steel was formed in 1970 with the merger of Fuji Iron & Steel and Yawata Iron & Steel. Nippon Steel & Sumitomo Metal Corporation is the world's 2nd largest steel producer by volume as of 2012. Wikipedia.

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Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-05-17

A plurality of water removing nozzles of a water removing apparatus comprise one or more of a single far water removing nozzle and a far water removing nozzle group. The single far water removing nozzle forms a far end water removal single area that does not include one end but includes the other end in the width direction of a steel sheet conveyance plane. The far water removing nozzle group forms the far end water removal single area and one or more inner water removal single areas that do not include either end in the width direction of the steel sheet conveyance plane, in such a manner that the far end water removal single area and the one or more inner water removal single areas are aligned in order from the one end side to the other end side while overlapping with each other in the width direction of the steel sheet conveyance plane and aligned in order from the upstream side to the downstream side without overlapping in the conveyance direction.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-27

In a rolled steel bar or rolled wire rod for a cold-forged component having a predetermined chemical composition, Y1 represented by Y1=[Mn] [Cr] and Y2 represented by Y2=0.134(D/25.4-(0.50[C]))/(0.50[C]) satisfy Y1>Y2, the tensile strength is 750 MPa or less, an internal structure is a ferrite-pearlite structure, and the ferrite fraction in the internal structure is 40% or greater.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-20

[Object] There is provided a long structural member made of metal, which has a substantially gutter-shaped cross section and is excellent in load transfer properties when an impact load is applied. [Solution] A structural member made of metal, formed so as to extend long in a predetermined direction, and having a gutter bottom, two ridges continuing to both ends in a width direction of the gutter bottom, and two vertical walls continuing to the two ridges, includes an outward continuous flange continuously formed at least along the gutter bottom, the ridges, and the vertical walls at an end in the predetermined direction, in which a width of the gutter bottom is reduced as a distance from the end having the outward continuous flange becomes larger.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-27

Provided is a surface treated steel sheet for a fuel tank, the surface treated steel sheet including: a Zn plated layer or a Zn-Ni alloy plated layer which is formed on at least a surface of the steel sheet to be an inner surface of the fuel tank; and a chromate-free chemical conversion coating layer containing a water-and-oil repellent, the chromate-free chemical conversion coating layer being placed over the Zn plated layer or the Zn-Ni alloy plated layer on the surface to be the inner surface of the fuel tank. A water contact angle on a surface of the chromate-free chemical conversion coating layer is more than or equal to 70 degrees and an n-hexadecane contact angle on the surface of the chromate-free chemical conversion coating layer is more than or equal to 30 degrees and less than or equal to 70 degrees.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-20

The present invention has as its object the provision of a T-shaped joint structure sufficiently securing a mounting region for another member and securing rigidity of a joint part. A first member and a second member joined with the first member and extending in a direction vertical to the longitudinal direction of the first member are provided. In a side view of first member in the longitudinal direction, the part of the first member joined with the second member, that is, a first member side joining element, is slanted from the first member toward the second member so that the first member becomes tapered. The part of the second member joined with the first member, that is, a second member side joining element, is slanted from the first member toward the second member in the same direction as the first member side joining element. The first member side joining element and second member side joining element are smoothly joined to form a joined part. The joined part is present at least at single side of the first and second member in the lateral direction.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-13

A hot-dip galvanized steel sheet wherein the hot-dip galvanized steel sheet comprises a base steel sheet and a hot-dip galvanized layer, a ferrite phase is, by volume fraction, 40% or more and 97% or less in a range of 1/8 thickness to 3/8 thickness centered at a position of 1/4 thickness from the surface of the base steel sheet, a hard structure is 3% or more in total, wherein the hot-dip galvanized steel sheet has the hot-dip galvanized layer in which Fe is 5.0% or less and Al is 1.0% or less, and columnar grains formed of a phase is 20% or more in an entire interface between the plated layer and the base steel sheet on the surface of the base steel sheet in which a ratio of a volume fraction of the hard structure in a surface layer range of 20 m depth in a steel sheet direction from an interface between the hot-dip galvanized layer and the base steel sheet is 0.10 times or more to 0.90 times or less of a volume fraction of the hard structure in the range of 1/8 thickness to 3/8 thickness, and wherein the hot-dip galvanized steel sheet has a refined layer at the side of the interface in the base steel sheet, and wherein an average thickness of the refined layer, an average grain size of ferrite in the refined layer and a maximum size of the oxide included in the refined layer are defined respectively.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-20

A press formed product includes a top panel part, vertical wall parts, and ridge line parts between the vertical wall parts and the top panel part, and includes a shape-changing part in a part of the ridge line parts. A producing method of the press formed product includes a preparation step of preparing a metal sheet as a starting material, and a press working step of performing press working on the starting material by using a punch, and a pad and a die that are paired with the punch. The press working step includes a first step of forming, by the punch and the pad, the entire region of the top panel part, the entire region of each of the ridge line parts including the shape-changing part, and a region up to a predetermined height from the border between the vertical wall part and the ridge line part of a region of each of the vertical wall parts, and a second step of forming, subsequent to the first step, by the punch and the die, the remaining regions with the starting material sandwiched between the punch and the pad.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-13

A method of manufacturing a strip has a step of selectively enlarging a place, at which a strip width is smaller than a predetermined width, of a hot strip that is formed from a steel.


Patent
Nippon Steel & Sumitomo Metal Corporation | Date: 2017-09-13

A hot-dip galvanized steel sheet includes a base steel sheet and a hot-dip galvanized layer formed on at least one surface of the base steel sheet, in which the hot-dip galvanized layer includes Fe in a content of more than 0% to 5% or less, Al in a content of more than 0% to 1.0% or less, and columnar grains formed by a phase on the surface of the steel sheet, further, 20% or more of the entire interface between the hot-dip galvanized layer and the base steel sheet is coated with the phase, and a ratio of an interface formed between grains in which coarse oxides are present among grains and the base steel sheet with respect to the entire interface between the phase and the base steel sheet in the hot-dip galvanized layer is 50% or less, the base steel sheet has predetermined chemical components and a refined layer in direct contact with the interface between the base steel sheet and the hot-dip galvanized layer, an average thickness of the refined layer is 0.1 to 5.0 m, an average grain size of ferrite in the refined layer is 0.1 to 3.0 m, one or two or more of oxides of Si and Mn are contained in the refined layer, and a maximum size of the oxide is 0.01 to 0.4 m, and a volume fraction of residual austenite in a range of 1/8 thickness to 3/8 thickness centered at a position of 1/4 thickness from the surface of the base steel sheet is 1% or more.


Patent
Nippon Steel & Sumitomo Metal Corporation, Tokyo University of Marine Science and Technology | Date: 2017-09-20

A superconducting bulk magnet comprising a plurality of superconducting bulk materials combined, in which breakage of superconducting bulk materials is prevented and a strong magnetic field can be generated, that is, a superconducting bulk magnet comprising a plurality of superconducting bulk materials, each comprising a single-crystal formed RE_(1)Ba_(2)Cu_(3)O_(y) (RE is one or more elements selected from Y or rare earth elements, where 6.8y7.1) in which RE_(2)BaCuO_(5) is dispersed and each provided with a top surface, a bottom surface, and side surfaces, combined together, in which superconducting bulk magnet, bulk material units, each comprising a superconducting bulk material and a bulk material reinforcing member arranged so as to cover a side surface of the same, are arranged facing the same direction and contacting each other to form an assembly, a side surface of the assembly is covered by an assembly side surface reinforcing member, a top surface and bottom surface of the assembly are respectively covered by an assembly top reinforcing member and an assembly bottom reinforcing member, and the assembly side surface reinforcing member, the assembly top reinforcing member, and the assembly bottom reinforcing member are joined into an integral unit, is provided.

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