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JP5814943B2 |
The invention relates to a method and a device for guiding bands to be joined to one another along their longitudinal edges, comprising guide elements which form tracks for guiding the bands that are configured such that the bands approa...
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JP5809170B2 |
A device and a method for guiding bands to be joined to one another along their longitudinal edges, in which bands are guided via deflection rollers to a joining position. The device according to the invention provides that the deflectio...
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JP5797375B2 |
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JP2015530552A |
Small aluminum heat exchangers are manufactured from welded flat tubes with internal and / or external fins for cooling power electronics equipment and / or battery cells. The fin insertion section is prefabricated and manually or automa...
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JP5781821B2 |
The present invention is to provide a squeeze roll stand in which roll replacement of squeeze rolls is easily performed and a device structure is simple. In order to realize this, the squeeze roll stand includes a combination of a fixed ...
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JP5777266B2 |
Non-detachable welded joints with certain new or improved properties and the provision of such non-detachable welded joints by ultrasonic impact treatment, is described involving conforming to select treatment parameters to control the f...
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JP5765509B1 |
By mass%, C: 0.02 to 0.14%, Si: 0.05 to 0.50%, Mn: 1.0 to 2.1%, P: 0.020% or less, S: 0.010% or less, Nb: 0.010 to 0.100%, Ti: 0.010 to 0.050% , Al: 0.010 to 0.100%, and N: 0.0100% or less, and the contents of Cu, Ni, Cr, Mo, V, and B ar...
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JP5765276B2 |
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JP5742207B2 |
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JP5739619B2 |
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JP2015514587A |
The present invention is a method and an apparatus for performing vertical seam welding of a deformed pipe with a pipe welder, wherein the pipe welder is directly sequentially provided with a pipe with a slit (5) formed from a metal stri...
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JP2015085354A |
To provide a manufacturing method of an electric resistance welded steel pipe, with which quality of a welded part of a steel pipe product can be surely guaranteed by reducing oxygen concentration of a part to be welded sufficiently with...
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JP5703678B2 |
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JP5664835B2 |
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JP5625292B2 |
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JP5626497B2 |
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JP5601015B2 |
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JP2014184469A |
To provide a weld zone shield device that prevents formation of a penetrator by sufficiently decreasing oxygen concentration of a zone-to-be-welded in electric sewing welding.A shield device for a zone-to-be-welded of tube stock of an el...
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JP5595658B2 |
A method for setting the operating frequency of a forge welding machine for a preferred width of the of the heat affected zone during a forge weld. A computer program executes a self-tuning routine to determine the operating frequency in...
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JP5556061B2 |
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JP5549963B2 |
A monitoring apparatus for an electric resistance welding operation that forms a steel sheet continuously into a cylindrical shape while the sheet is transferred, and heats and melts both of a circumferential ends of the formed steel she...
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JP5516834B1 |
An electric resistance welded steel pipe which has sufficient strength and low-temperature toughness and a low yield ratio and which is suitable as a line pipe to be laid in depths of the sea, characterized in that: the composition of th...
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JP5516680B2 |
The invention provides electric resistance welded steel pipes or steel tubes with a tensile property TS of not less than 434 MPa which have electric resistance welded parts exhibiting both excellent HIC resistance and excellent low-tempe...
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JP5510615B2 |
An electric resistance welding operation management device 100 manages a welding operation during manufacture of electric resistance welded steel pipe, in which heat is input to a steel plate 1, that is being conveyed along a specific co...
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JP5503941B2 |
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JP5493666B2 |
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JP5482879B1 |
To provide a method for improving a forge welded steel pipe manufactured by a conventional technique, in which a joint flat state and a crack prevention effect at the time of flaring are still insufficient. A steel strip end formed by mi...
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JP5440014B2 |
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JP2014004624A |
To provide a method of shielding a welded part of an original pipe which realizes secure gas shield of the welded part during electric resistance welding to prevent generation of penetrators without sacrificing pipe manufacturing cost or...
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JP5380877B2 |
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JP5332287B2 |
To solve the problem that it is difficult to decrease welding defects by a traditional technology to a level which sufficiently satisfies quality requirements of electric weld steel pipe used in a severe environment. The welding system f...
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JP5316320B2 |
To provide a method for manufacturing an electric resistance welded steel tube excellent in quality of a weld zone, a method which uses plasma working gas containing carbon, which can obtain stable plasma discharge over a long period eve...
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JP2013208637A |
To eliminate the penetrator crack of a steel pipe, and further, to suppress the degradation of a fatigue life by controlling the mean surface temperature of a weld bead portion and the width of a white band inside a seal box.A seal box w...
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JP5312735B2 |
To provide a method for manufacturing an electric resistance welded tube with excellent weld part characteristic capable of achieving toughness of a weld part required for an electric resistance welded tube for the line pipe for an oil w...
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JP5303842B2 |
There are provided an electric resistance welded steel tube for heat treatment that can be used as a highly durable material even after quenching treatment by rapid heating for hollow stabilizers or the like and a method for manufacturin...
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JP5282946B2 |
To provide a pipe pressure welding system capable of easily setting the power charged in an induction heating coil when butted parts of pipe members are subjected to the induction heating for pressure welding with an insert held therebet...
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JP2013169579A |
To completely prevent a penetrator crack by carrying out gas shielded welding where an oxygen concentration of a welding point or its periphery in a seal box is 300 ppm or less, and further to suppress degradation of a fatigue life.Seal ...
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JP5245998B2 |
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JP5243712B2 |
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JP5233902B2 |
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JP5234154B2 |
In the electric-resistance-welded pipe welding apparatus, after a metal strip that is traveling is bent into a cylindrical shape by rolls so that both ends in a width direction of the metal strip face each other, a power supply portion o...
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JP5233389B2 |
To solve the problems of the conventional technique that the equipment length of a heat treatment apparatus increases, and an enormous running cost is necessitated, resulting in nonefficient electro-resistance welded tube manufacture. Th...
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JP2013107122A |
To suppress the generation and nitriding of remaining oxide in a welded part by shielding entirely welded butting surface by liquid flux or vaporization flux, attain the reduction of surface tension of a molten metal at the welded buttin...
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JP5200469B2 |
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JP5194728B2 |
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JP5182330B2 |
A system and method for monitoring the molten state for enabling a molten state, butting state, or other state of electric-resistance-welded pipe on-line more accurately than in the past are provided. That is, a mirror 23 provided at a f...
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JP5176495B2 |
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JP5156266B2 |
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JP5128817B2 |
A piston particularly adapted for heavy-duty diesel engine applications is fabricated from separate parts having circumferentially extending joining surfaces that are heated prior to bonding to an elevated temperature sufficient to enabl...
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JP5125670B2 |
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