Chuo-ku, Japan
Chuo-ku, Japan

Kobe Steel, Ltd. , operating worldwide under the brand Kobelco, is a major Japanese steel manufacturer headquartered in Chuo-ku, Kobe. Kobe Steel also has a stake in Osaka Titanium Technologies.It was formed on September 1, 1905. Its location in a major city port was useful for importing and exporting iron ore and coal. Kobe Steel is the owner of the rugby team Kobe Steel Kobelco Steelers.The company is listed on the Tokyo and Nagoya Stock Exchange, on the Osaka Securities Exchange and is a constituent of the Nikkei 225 stock index. As of March 31, 2014, the company has 208 subsidiary and 62 affiliated companies across Japan, Asia, Europe, the Middle East and the US. Wikipedia.


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Patent
Kobe Steel | Date: 2016-08-18

Provided is a braking apparatus for braking of an electric winch of a construction machine, ensuring safe braking with much regeneration. The apparatus includes a regenerative-power generation unit, a regenerative-power receiving unit, a braking device for mechanical braking separately from the regenerative-power generation unit, and a braking control unit including a necessary-braking-capacity calculation section, a regeneration-capacity calculation section calculating a regeneration capacity, and a command section. The command section, when the regeneration capacity is not less than a necessary braking capacity, performs braking with only a regenerative action while not operating the braking device and, when the regeneration capacity is less than the necessary braking capacity, calculates an auxiliary braking force equivalent to a difference between the necessary braking capacity and the regeneration capacity and brings the braking device into braking action with the auxiliary braking force.


Patent
Kobe Steel | Date: 2016-08-17

Provided is a lattice boom in which a desired part can be reinforced after the lattice boom has been assembled and in which workability of the reinforcement can be improved. The lattice boom includes a plurality of main pipes, a plurality of lattice pipes, and a reinforcing part. The reinforcing part is provided on at least one of the outer circumferential surface of the main pipe and the outer circumferential surface of the lattice pipe. The reinforcing part is arranged between adjacent connecting parts among a plurality of connecting parts each connecting the main pipe and the lattice pipe. The reinforcing part includes a plurality of reinforcing members arranged along the circumferential direction of the pipe.


The invention provides a hard coating film insusceptible to adhesion to a soft metal, the hard coating film being suitable for use as a coating on the surface of, for example, a die in contact with the soft metal. Further, the hard coating film includes a metal element containing at least two species of elements selected from the group consisting of Ti, Al, and Cr, and a non-metal element containing O (oxygen) only, or O and at least one species selected from the group consisting of C and N. A proportion accounting for the O in the total non-metal element is not less than 0.2, in atom ratio.


For continuously casting an ingot of titanium or titanium alloy, molten titanium or titanium alloy is poured into a top opening of a bottomless mold with a circular cross-sectional shape, the solidified molten metal in the mold is pulled downward from the mold, a plurality of plasma torches disposed on an upper side of molten metal in the mold such that their centers are located directly vertically above the molten metal in the mold, are operated to generate plasma arcs that heat the molten metal in the mold, and the plasma torches are moved in a horizontal direction above a melt surface of the molten metal in the mold, along a trajectory located directly vertically above the molten metal in the mold, while keeping a mutual distance between the respective plasma torches such that the plasma torches do not interfere with each other.


Patent
Kobe Steel, Asahi Shipping Co., TSUNEISHI SHIPBUILDING Co. and MIURA Co. | Date: 2016-08-17

A heat energy recovery system includes an evaporator, a superheater, an expander, a power recovery device, a condenser, a pump, and a controller. The controller includes: an engine load calculation section; a maximum rotation speed determination section for determining a maximum rotation speed of the pump which is obtained when a pinch temperature reaches a target pinch temperature, based on a relational expression representing a relationship between the engine load and the maximum rotation speed, and an engine load; and a rotation speed regulation section for regulating the rotation speed of the pump in such a way as to allow the degree of superheat of the working medium flowing into the expander to be equal to or greater than a reference value, and to allow the rotation speed to be equal to or less than a maximum rotation speed determined by the maximum rotation speed determination section.


The oxide of the present invention for thin-film transistors is an InZnSn-based oxide containing In, Zn, and Sn, wherein when the respective contents (atomic %) of metal elements contained in the InZnSn-based oxide are expressed by [Zn], [Sn], and [In], the InZnSn-based oxide fulfills the following expressions (2) and (4) when [In]/([In]+[Sn])0.5; or the following expressions (1), (3), and (4) when [In]/([In]+[Sn])>0.5. [In]/([In]+[Zn]+[Sn])0.3 - - - (1), [In]/([In]+[Zn]+[Sn])1.4{[Zn]/([Zn]+[Sn])}0.5 - - - (2), [Zn]/([In]+[Zn]+[Sn])0.83 - - - (3), and 0.1[In]/([In]+[Zn]+[Sn]) - - - (4). According to the present invention, oxide thin films for thin-film transistors can be obtained, which provide TFTs with excellent switching characteristics, and which have high sputtering rate in the sputtering and properly controlled etching rate in the wet etching.


Displacement sensors (19) are configured so as to be capable of measuring relative displacement along the axial direction of an outer ring-fixing member (17), which is for fixing the outer ring (16) of one end of a bearing (6), or a casing (18) with respect to an inner ring-fixing member (20), which is for fixing the inner ring (13) of the one end of the bearing (6), or the rotor (5). A load-calculating unit calculates the thrust load acting on the rotor (5) by multiplying the relative displacement measured by the displacement sensors (19) by a conversion coefficient.


Provided are: a high-strength steel sheet which is improved in both elongation and local formability and thus exhibits excellent workability; and a manufacturing method thereof. The high-strength steel sheet contains C, Si, Mn, Al, P and S with the remainder including iron and unavoidable impurities, and has a metal structure which includes polygonal ferrite, bainite, tempered martensite, and retained austenite. In the metal structure, (1) the bainite has a composite microstructure including both a high-temperature-formed bainite having an average distance between adjacent regions of retained austenite and/or carbide of 1 m or more and a low-temperature-formed bainite having an average distance between adjacent regions of retained austenite and/or carbide of less than 1 m each identified upon observation with a scanning electron microscope; and (2) the retained austenite is present in a volume percentage of 5% or more of the entire metal structure as determined by a saturation magnetization measurement.


Patent
Kobe Steel | Date: 2016-04-27

Provided is a construction machine including exhaust ducts and favorably discharging air from an engine room through an air outlet. The construction machine includes an engine room with an upper wall portion and a cooling fan, the upper wall portion formed with first and second exhaust ducts. The first exhaust duct includes an upstream portion extending in a first horizontal direction and a downstream portion extending upward from a terminal end of the upstream portion to a first air outlet. The second exhaust duct includes a cross portion crossing the upstream portion in a second horizontal direction perpendicular to the first horizontal direction above the upstream portion. The cross portion allows air to flow from a second air inlet opened downward and sideward of the upstream portion to a second air outlet opposite to the second air inlet, through an upper side of the upstream portion.


Patent
Kobe Steel | Date: 2016-05-31

Provided is a construction machine capable of smooth exhaust and suppression of a leak of noise from an engine room, including an engine guard defining an engine room, a cooling fan disposed in the engine room, a projection element projecting upward beyond the engine guard, and an exhaust duct. The exhaust duct has a bent shape including a first duct section extending along an axial flow direction of the cooling fan from an upstream end portion surrounding a duct inlet to a connection portion and a second duct section extending upward from the connection portion and surrounding a duct outlet opened upward, also including an engine concealment section obstructing a direct view to an engine through the duct outlet from outside the engine room.

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