Nippon Steel Corporation

Shin-Etsu Polymer Co., Ltd.

Katsuhiko Kato

Hitoshi Uchiyama

Junichi Nakagawa

Yasuhiro Tanaka

Naoki Kaneko

Kenichiro Miyamoto

Shinya Kitamura

Hiroshi Sugano

Keiichi Katahira

Norifumi Asahara

Mikio Futaka

Takayuki Kaneyasu

Hiroyuki Ishimatsu

Ryuzou Hayakawa

Akio Shinkai

Hideto Taneyama

Masayuki Abe

Akihiko Takahashi

Shunji Sakamoto

Toshio Tanoue

Hiroshi Mimura

Naoto Ono

Tadashi Komori

Yuji Koyama

Yujiro Miyauchi

Isao Anai

Itsuro Hiroshige

Masaru Hagano

Atsushi Komori

A charged material containing alloy iron of at least one of ferrochrome containing metallic Si or ferrosilicon, and unreduced slag containing Cr oxide generated by oxidative refining, is charged into an electric furnace as a mixture in which a mass ratio of a metallic Si amount to a Cr oxide amount is from 0.30 to 0.40, and a C concentration is in a range of from 2.0% by mass to a saturation concentration, and molten iron containing Cr obtained due to the Cr oxide undergoing reduction processing is produced, such that, when the charged material is heated and melted in the electric furnace, an attainment temperature is set to from 1400° C. to 1700° C., a maximum average heating rate in any 80° C. interval from 1300° C. to the attainment temperature is set to 15.0° C./min or less, and a minimum average heating rate in any 80° C. interval from 1300° C. to the attainment temperature is set to 3.0° C./min or greater.

Method for producing chromium-containing molten iron

A charged material containing a metal raw material of at least one of ferrochromium containing metal Si or ferrosilicon and unreduced slag containing Cr oxide generated by oxidation refining is charged into an AC electric furnace including three electrodes, a mass ratio of a metal Si amount to a Cr oxide amount being from 0.30 to 0.40, and a C concentration being from 2.0% by mass to a saturation concentration.

[Problem] To reduce a sliding trace in a vicinity of a substrate end surface, while maintaining smooth vertical movement of a substrate in a groove of the holding section in a substrate storage container, said sliding trace being made with the holding section. [Solution] The present invention relates to a substrate storage container () that is provided with: a container main body (), which stores a substrate (W), and which has at least one side open; and a removable cover body () capable of opening/closing an opening () of the container main body (). In the substrate storage container (), the inside of the container main body () is provided with a first holding section () having a first holding groove () for holding a rear portion of the substrate (W), the inner side of the cover body () is provided with a second holding section () having a second holding groove () for holding a front portion of the substrate (W), and at least the first holding groove () of the first holding section () is configured from an alloy resin having a polycarbonate resin and a polybutylene terephthalate resin as main components.

Substrate storage container

A member for a push button switch that has a small thickness, high durability, and excellent click feeling and can be manufactured at low cost. The member for the push button switch includes one or more key tops, a metal sheet including at least holes that correspond to positions of the key tops, and an elastic sheet that is provided on the metal sheet so as to be positioned on the same side as or opposite side to the key tops. The elastic sheet is fitted into the holes and comes in contact with the key tops at positions of the holes. The elastic sheet includes a urethane film or polycarbonate, and a silicone rubber, which are laminated in a thickness direction of the metal sheet.

Method of manufacturing a member for a push button switch

Member for push button switch and method of manufacturing the same

To obtain a member for a push button switch having a natural metallic impression and an upscale impression; enabling a precise arrangement of the push buttons; being capable of being made thinner; and being difficult to get stained, there is provided a member for a push button switch having a configuration in which a gap between adjacent metal push buttons is filled with a transparent organic polymer material, the transparent organic polymer material including a transparent resin sheet extending from an interior surface of the gap to a ceiling surface side of the push button, and a transparent rubber-like elastic material disposed inside the transparent resin sheet.

The present invention provides: a fuel tank made of a ferritic stainless steel sheet having long lasting corrosion resistance under the environment of the fuel tank and excellent in formability when fabricating the fuel tank; more specifically, a fuel tank made of a ferritic stainless steel sheet containing 10 to 25 mass % of Cr and having an average r-value of 1.9 or larger, an r-value in-plane anisotropy &Dgr;r of 1.0 or smaller, and a total elongation of 30% or larger, having a plane intensity ratio I(111)/I(100) of 10 or larger, and having lubricant films on the surfaces of the steel sheet and a surface friction coefficient of 0.10 or less.

Fuel tank made of ferritic stainless steel

Lubricative stainless steel sheet and pipe having a chromate film on at least one of the surfaces of a stainless steel sheet or pipe substrate, the chromate film having an amount of adhered Cr of 5 to 100 mg/m , and, on the chromate film, a lubricant film obtained by applying, on the chromate film, a water-base coating containing (a) a urethane resin of ether-ester type having a skeleton of bisphenol type, a skeleton of ester, and a carboxyl group, (b) an epoxy resin, and (c) a polyolefin wax, and baking the applied coating, the sum of the amount of the urethane resin of (a) and the epoxy resin of (b) being 70 to 95% by weight of the total solids of the coating, the amount of the polyolefin wax of (c) being 5 to 30% by weight of the total solids of the coating, and the lubricant film having a thickness of 0.5 to 5 micrometers and a Vickers hardness of at least 15. A method of producing a lubricative stainless steel pipe is also disclosed.

Lubricative stainless steel sheets and pipes and method of producing lubricative stainless steel pipes

In a straight barrel type vacuum refining apparatus, use is made of a combination of: a decarburization method wherein the flow rate of oxygen fed into a vacuum tank and the flow rate of an inert gas fed into the vacuum tank are regulated and, at the same time, the flow rate of oxygen gas blown is reduced at a rate of 0.5 to 12.5 Nm /h/t/min in a low carbon concentration region having a carbon concentration of not more than the critical carbon concentration; and a vacuum refining apparatus provided with dust accumulation preventing means.

Method and apparatus for vacuum decarburization refining of molten steel

Method of vacuum decarburization/refining of molten steel

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Tokyo, Japan

Katsuhiko Kato