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JP4526281B2 |
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JP4510460B2 |
Device for welding a moving packaging material ( 1 ) including a layer that can be heated by electromagnetic induction and a thermoplastic layer incorporating a welding zone ( 2 ) which lies in the direction of movement of the packaging ...
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JP4505491B2 |
This invention provides a steel pipe material weld zone heating method and apparatus for melting and welding the weld zone of a steel pipe material that during continuous induction heating and welding of moving steel pipe material as the...
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JP4491889B2 |
The impeder for welded pipe production, has a laminate (10) of steel plates (8) stored in an insulated case (4). An insulated film is formed on surface of steel plate (8) of thickness 0.3 mm or less. The steel plate contains 100 ppm or l...
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JP4489331B2 |
An oil-through type push rod for, for instance, internal combustion engines including a metal pipe and a metal end fitting which has an oil hole formed therein and is welded to the end of the metal pipe, the metal pipe being provided wit...
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JP4483215B2 |
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JP4473307B2 |
An apparatus for in-line ERW welding of hollow flange steel members in a cold forming mill comprises a seem roll stand (60) rotatably supporting at least one seam roll (68) adapted in use to guide a free edge (34a,34b) of a contoured met...
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JP2010110814A |
To provide an electromagnetic welding method in which no electromagnetic force f substantially works on a coil, by improving shortcomings of lowered durability of the coil caused by a welding electromagnetic force f working on the coil i...
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JP4457595B2 |
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JP4448773B2 |
A metal cord (100) comprising at least two metal strands (101 a-g). At least one strand (101d) is welded, said strand with weld having elongation at rupture of more than 30% of the elongation at rupture of an identical strand without a w...
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JP4442758B2 |
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JP4425690B2 |
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JP2010036192A |
To provide a bead cutting method and apparatus of a resistance welded tube, by which occurrence of chatter is prevented in bead cutting of an inner or outer face even if a cutting quantity of a weld bead is increased, by which a shape of...
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JP4416416B2 |
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JP2010501360A |
Devices and methods of welding dissimilar materials are contemplated in which an adaptor is used in an intermediate position between the dissimilar materials. Most preferred adaptors are manufactured by friction stir welding from two dis...
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JP4396020B2 |
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JP2009285710A |
To solve a problem that a conventional technique has difficulty to obtain an electric resistance welded tube excellent both in out-of-roundness and buckling resistance.In the manufacturing method of the electric resistance welded tube, r...
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JP2009285711A |
To solve a problem that a conventional technique has difficulty to obtain an electric resistance welded tube excellent both in out-of-roundness and buckling resistance.In the manufacturing method of an electric resistance welded tube, ro...
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JP4374845B2 |
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JP4361985B2 |
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JP4348403B1 |
To provide an inner surface bead cutting device for an electric resistance sewn steel pipe capable of cutting the inner surface bead of the electric resistance sewn steel pipe without causing an inner surface trampling defect. An interna...
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JP2009530128A |
Disclosed is a mandrel for use in Radio Frequency welding, wherein the mandrel comprises first and second conductive portions separated by an insulating material, such that different potentials may be applied to the first and second cond...
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JP4315005B2 |
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JP2009155719A |
To provide a vibration-damping steel pipe of which the material itself has a superior vibration-absorbing capability in a usage environment, and to provide a manufacturing method therefor.An Fe-Mn-Cr-Ni alloy with high strength and high ...
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JP4286284B2 |
A U-shaped magnetic circuit (2) provided with a field winding (3), including respective induction electrodes (5s, 5i) at an outer end of each arm of the magnetic circuit (2) Both electrodes are perpendicularly arranged as regards the mul...
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JP4274986B2 |
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JP2009119484A |
To provide a method for manufacturing an electric resistance welded tube excellent in characteristics of a weld zone, in which excellent weld quality is maintained, by properly giving a tapered shape to the width direction end part of a ...
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JP2009113066A |
To provide an electric resistance welded steel pipe for an oil supply pipe, which can be worked to a desired shape of the oil supply pipe without generating any serious defect such as crack even under a severe working condition such as a...
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JP2009107007A |
To provide an induction heating method in pipe welding where, when the joint between pipe members is subjected to induction heating with an inert material sandwiched, so as to be pressure-welded, the variation of the temperature elevatin...
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JP4250848B2 |
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JP4250849B2 |
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JP4244690B2 |
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JP4241503B2 |
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JP2009045643A |
To solve problems that a desired taper shape is difficult to obtain by a method of imparting a taper to plate end parts by a conventional fin pass forming and, even when the desired taper shape is obtained, it is not a few that the tough...
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JP2009034725A |
To provide a method of manufacturing tubes by which the tubes such as for line pipes of oil wells which require toughness in the weld zone or tubes such as casing pipes of the oil wells which require the strength in the weld zone are man...
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JPWO2006134667A1 |
The present invention eliminates the restrictions that arise when adopting a conventional floating control device by adopting a new fin roll support mechanism and adjustment mechanism in the manufacture of welded pipes, and takes advanta...
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JP2008307571A |
To provide a method for making the shape of a butted end portion just before seam welding suitable for discharging penetrators (oxides) and a method for preventing the generation of the penetrators (oxides) in a butt welded portion.Taper...
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JP4200786B2 |
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JP2008302379A |
To provide a method for making the shape of butted end portion just before a seam welding operation suitable for discharging penetrated oxide.Band steel 20 is formed by rolling by means of a rolling machine 4, and is formed into a pipe 3...
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JP4199046B2 |
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JP4173990B2 |
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JP4171433B2 |
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JP4162752B2 |
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JP4161662B2 |
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JP2008213035A |
To provide an electromagnetic spot welding method for a metallic thin sheet or foil with which the problem that, in the conventional electromagnetic spot welding method, when the area to be spot-welded is reduced, there has been a limita...
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JP4138929B2 |
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JP2008183617A |
To provide a flat one-turn coil for electromagnetic welding which improves defects that a large power supply energy is needed in a conventional flat coil when welding an aluminum alloy thin plate to be hardly welded with respect to the f...
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JP4132246B2 |
To produce a steel pipe in which elongation suitable for hydroform forming is secured by forming an extra low C material having a specified C content into an electroseamed steel pipe and subjecting the electroseamed weld zone to heat tre...
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JP2008526524A |
Continuous coil tubing made from shorter lengths of flat metal strip which are spliced end-to-end and formed into tubular form and seam welded and thereafter introduced into a forging or hot reduction process. Finished coil tubing is wit...
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JP2008132538A |
To provide a method of manufacturing an electric resistance welded tube excellent in the properties of a weld zone by which the toughness of the weld zone which is required for the electric resistance welded tube for line pipes of oil we...
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