Nisshin Steel Co., Ltd.

Nippon Steel Nisshin Co., Ltd.

Kabushiki Kaisha Toshiba

Oki Data Corporation

Amada Company, Limited

Nippon Tungsten Co., Ltd.

Amada Holdings Company Ltd.

Nippon Steel Corporation

Hiroshi Asada

Yasuhiro Sakurada

Tooru Ienari

Hirokazu Sasaki

Hiroshi Horikawa

Takefumi Nakako

Masahito Ito

Hideo Hara

Masanori Uehara

Jun Kurobe

Kazuaki Hosomi

Tomokazu Nobutoki

Yasuo Funato

Shigeo Matsubara

Kenji Okamura

Shuichi Teramoto

Shouji Inoue

Toru Ienari

Katsuyasu Matsuzawa

Shingo Mukae

A laser cut-and-machined product made from a plated steel plate. A cut face of the plated steel plate is coated with plating-layer-containing metal of a top surface of the plated steel plate that is melted and/or evaporated at the time of laser cutting and machining.

Laser cutting and machining method for plated steel plate, laser cut-and-machined product, thermal cutting and machining method, thermal cut-and-machined product, surface-treated steel plate, laser cutting method, and laser machining head

A laser cutting and machining method for plated steel plated, when irradiating a laser beam LB on to the upper surface of a plated steel plate W and laser cutting and machining same: a plating layer-containing metal that has been melted and/or evaporated by the irradiation of the laser beam LB is caused to flow on to a cut surface of the plated steel plate W as a result of assist gas that is jetted towards a laser machining units; and the plating layer-containing metal is coated on the cut surface.

A laser-welded shape section steel includes a web member and a flange member each made of a steel plate, the steel plate having an equivalent carbon content Cof not less than 0.075 and not more than 0.15, the equivalent carbon content Cbeing represented by the following formula: C=C+(Si/50)+(Mn/25)+(P/2)+(Cr/25)+Ti, where a welded part, which is a joint part in which the web member and the flange member are joined, has a hardness of not less than 1.2 times and not more than 4 times as hard as that of the steel plate, and the welded part a protrusion length of not greater than 1 mm.

Laser-welded shaped steel and method for producing same

The present invention provides a method for producing a TIG-welded stainless steel tube without adding Hto a shielding gas, while inhibiting generation of a weld defect. The method is a method for producing a TIG-welded stainless steel tube and includes the steps of bending a stainless steel strip in a width direction so as to butt both edges against each other and TIG-welding the both edges thus butted. A pulse waveform of a pulse frequency of 40 Hz to 300 Hz is used as a current waveform of a welding power source.

Method for producing TIG welded stainless steel tube, TIG welded stainless steel tube, and TIG welded stainless member

A welded shaped steel manufacturing device includes: a plate conveying device configured to convey a web member and two flange members in a conveyance direction; and a laser welding device configured to laser-weld butt portions of ends of the web member butting against the two flange members for weld-bonding, wherein the plate conveying device includes a web member holding device having surface side rollers arranged at intervals in the conveyance direction in a position not to block laser irradiation from the laser welding device toward welding points, and wherein the web member is held with the surface side rollers over a predetermined range in the conveyance direction, and wherein side ends of the surface side rollers facing the two flange members are positioned along boundaries of areas having spatters dispersed from the welding points in a degree exceeding a predetermined value.

Device and method for manufacturing welded shaped steel

A welded shaped steel manufacturing device for weld-connecting a butt portion of a web member having an end butting perpendicularly against a flange member and thereafter correcting in shape the flange member subjected to thermal deformation caused by heat input during welding, the device includes: a corrective device including flange-member correcting rollers arranged for respective ends of the flange member, each configured to press each end on a web-member side of the flange member so as to correct the thermal deformation over a range of the flange member from each end thereof to the butt portion thereof against the web member, and web-member supporting rollers configured to support a web surface of the web member, wherein the flange-member correcting rollers arranged for the respective ends of the flange member apply independent pressures to the respective ends so as to correct the thermal deformation.

Provided is a stacking device that stacks shaped steel with small-scale equipment using a transporting means with a simple structure. This shaped steel stacking device comprises: a stacking platform on which stacked shaped steel is loaded; a transporting platform that has a plurality of loading faces on which the shaped steel to be transported to the stacking platform is loaded; and a pushing means that pushes the shaped steel loaded on the transporting platform out toward the stacking platform. The transporting platform comprises a first loading face having a flat portion and a second loading face having a flat portion and an inclined portion. The inclined portion is formed on a side facing the stacking platform, and the first and second loading faces can be selected according to the order the shaped steel is pushed out.

Shaped steel stacking device

A welded portion shape of a cross-section perpendicular to the shaped steel longitudinal direction is set to satisfy a&#x3e;0 mm, b&#x3e;0 mm, c&#x2265;0.14 Tw, d&#x2265;0 mm, e&#x2265;0 mm, a+d&#x2264;2 mm and b+e&#x2264;2 mm; where a is a front melting width of the web material (on the laser beam irradiation side), b is a rear melting width of the web material (on the laser beam non-irradiation side), c is a maximum weld penetration depth, in a plate pressure direction, into the flange material, d is a front melting width of the flange material (on the laser beam irradiation side), e is a rear melting width of the flange material (on the laser beam non-irradiation side), and Tw is the plate thickness of the web material.

Laser welded shaped steel

An image forming apparatus includes a print job addition notification reception controller that receives from outside a print job addition notification that indicates a print job is added to a server, a print job reception controller that acquires the print job from the server, a print controller that performs printing based on the print job acquired from the server, and a service state controller that sets a service state to be any one of a service enabled state, in which the print job addition notification is received and the print job is acquired from the server, and a service stopped state, in which the print job addition notification is not received and the print job is acquired from the server based on an operation of a user.

Image forming apparatus with selectable service configuration, image forming system including same, and method for selective image formation

Architecture member

Provided is an electrode () which has a double structure including Cu or a Cu alloy as an electrode body () and a core material () made of W, Mo, a W-based alloy, or a Mo-based alloy embedded in a surface of the electrode body () which is abutted against a material to be welded, the core material () being formed by using W, Mo, the W-based alloy, or the Mo-based alloy which is in the form of a fibrous structure extended by sintering, swaging, and annealing in an electrode axis direction, the fibrous structure having a horizontal cross-sectional average particle diameter of 50 &#x3bc;m or more and an aspect ratio of 1.5 or more. The electrode () can be used as an inexpensive electrode obtained by suppressing particle dropping/attrition and defects in electrodes for spot welding, in which heat and pressure are applied repeatedly, stably enhancing durability.

Electrode for spot welding

The router unit is built in the main key telephone apparatus, the office line interface function and the independent power supplying function are deleted in the router unit, and the office line interface units and the power supply unit substitute for these functions. The temperature inside the cabinet, the operated state of the cooling fan, and the temperature and operating power supply voltage Vcc of the PC power supply unit, etc. are detected in the CTI personal computer, and these monitor data are transferred to the main key telephone apparatus and analyzed in the main key telephone apparatus, so as to detect abnormality in the CTI personal computer and take necessary measures against the abnormality.

Growing community of inventors

Tokyo, Japan

Hiroshi Asada