Nippon Steel Corporation

Unipres Corporation

Toshinori Mizuguchi

Masahiro Fuda

Seijun Higuchi

Yasuaki Naito

Kenichi Asakawa

Junji Nakano

Yasuo Takahashi

Yasuto Goto

Masao Kurosaki

Yoshiharu Inoue

Kazuhisa Kusumi

Yashichi Oyagi

Fumio Yamamoto

Minoru Fujinaga

Tomonari Oga

Toshinori Katayama

Yukikazu Takahashi

Nobuhide Suzuki

Hirohumi Kondo

Senkichi Tsujimura

Shinji Shiokawa

Akiyoshi Inoue

A fuel tank () includes: a lower panel () made of steel and an upper panel () made of steel; and at least one pillar () made of steel which is disposed in an interior space (V) formed by the lower panel () and the upper panel () facing each other and of which a first end portion is fixed to the lower panel () and a second end portion is fixed to the upper panel () in a state where the second end portion is disposed in a hole formed in the upper panel ().

Fuel tank with support pillar

A hot-dip Sn&#x2014;Zn-based alloy-plated steel sheet according to an aspect of the present invention includes: a steel sheet having a predetermined chemical composition; a diffusion alloy layer provided on one surface or both surfaces of the steel sheet; and a Sn&#x2014;Zn-plated layer provided on the diffusion alloy layer, in which the diffusion alloy layer contains Fe, Sn, Zn, Cr, and Ni, an area ratio of a Sn&#x2014;Fe&#x2014;Cr&#x2014;Zn phase to a Sn&#x2014;Fe&#x2014;Ni&#x2014;Zn phase in the diffusion alloy layer is 0.01 or more and less than 2.5, the diffusion alloy layer has a coverage of 98% or more with respect to the one surface, the Sn&#x2014;Zn-plated layer contains 1% to 20% of Zn by mass % and a remainder consisting of Sn and impurities, and an adhesion amount of the Sn&#x2014;Zn-plated layer is 10 to 80 g/mper one surface.

Hot-dip Sn&#x2014;Zn-based alloy-plated steel sheet

This manufacturing method of a fuel tank is for manufacturing a metallic fuel tank having a concavo-convex portion in a course of seam welding using a seam welder, wherein the seam welding is performed using the seam welder provided with a non-interfering space where interference with the fuel tank is avoided, while changing the position of the fuel tank relative to the seam welder.

Manufacturing method of fuel tank, and fuel tank

An exemplary embodiment of manufacturing a hot-dip Sn&#x2014;Zn coated steel sheet is provided which can include pre-coating a Fe&#x2014;Ni alloy containing between about 10 to 80 mass % of Ni, and a remainder being Fe on a steel sheet, immersing the steel sheet into a Sn&#x2014;Zn hot-dip coating bath so as to form a hot-dip coating layer on the steel sheet, cooling the hot-dip coating layer at a cooling rate of about 10&#xb0; C./sec to about 30&#xb0; C./sec so as to obtain a hot-dip Sn&#x2014;Zn coated steel sheet, measuring a differential scanning calorimetric curve of the hot-dip Sn&#x2014;Zn coated steel sheet by a differential scanning calorimetry, and distinguishing whether the hot-dip Sn&#x2014;Zn coated steel sheet has an objective microstructure by the measured differential scanning calorimetric curve.

Hot-dip Sn-Zn coated steel sheet having excellent corrosion resistance

Disclosed is a coated steel sheet valuable for the production of a fuel vessel, in which a first covering layer comprising a Pb-Sn alloy as the main component is formed on a substrate comprising a steel sheet and an undercoat covering layer composed of at least one member selected from Ni, Co and Cu, which is formed on the surface of the steel sheet according to need, a second covering layer containing a compound containing Pb and P is formed on the first covering layer, a third covering layer containing at least one member selected from Sn, Ni and Co is formed on the second covering layer, and according to need, the surface portion of the third covering layer is modified with a treating liquid containing a phosphoric acid ion or a chromic acid ion. This coated steel sheet shows a highly improved corrosion resistance, forming processability, solderability, and weldability.

Highly anticorrosive coated steel sheet for fuel vessel and process for

Coated steel sheet of high corrosion resistance comprises a sheet of steel containing not more than 0.1% by weight of carbon, 0.005 to 0.08% by weight of soluble aluminum and 0.2 to 20% by weight of chromium, the balance being iron and unavoidable impurities. The steel carries a nickel or nickel alloy layer formed on at least one surface thereof and having a thickness of 0.001 to 1.5 microns and a layer of tin formed on the nickel or nickel alloy layer and having a thickness of at least 0.05 micron. A method of producing it is also disclosed.

Tinned steel sheet having a high degree of corrosion resistance and a

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Tokyo, Japan

Toshinori Mizuguchi