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JP09001366 |
PURPOSE: To effect a high speed welding without generating any irregular bead by irradiating the vicinity of the butting part of the end surface of both edges with laser beam after setting an electric feeder at a position satisfying spec...
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JP09001232 |
PURPOSE: To identify an effective push-up position and a necessary push-up force to the elimination of an edge wave to push up the edge parts and to prevent a defective shape by pushing up and expanding the edge part of a forming materia...
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JP08332578 |
PURPOSE: To prevent leakage or spark through spatter or metal powder by thermally spraying alumina, an insulating material, on two surfaces of a square electrode. CONSTITUTION: An electrically insulating film 7 is formed by thermally spr...
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JP2588648 |
PURPOSE: To economically produce an ultrahigh tensile strength resistance welded tube used for structural member, e.g. for automobile use. CONSTITUTION: In a resistance welded tube having a composition consisting of, by weight, 0.05-0.30...
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JP08300164 |
PURPOSE: To improve productivity, to detect forming defects of tube stock and to simplify correction by providing a shield cover for covering only a local part between the welding equipment around the weld zone and a tube stock minimizin...
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JP08300172 |
PURPOSE: To obtain a highly efficient manufacture of a welded steel tube by welding with a laser beam, a high density energy beam, tilted in a specific angle range to the side where welding is completed and thereby preventing the generat...
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JP08300166 |
PURPOSE: To improve reliability of a joined part by welding between tube ends by means of a liquid phase diffusion welding method and also causing thickening with hardly increasing the inner diameter of the joined part. CONSTITUTION: Bot...
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JP08283852 |
PURPOSE: To produce a high tensile strength electric resistance welded tube excellent in workability required for members related to an under carriage member of automobile such as a suspension arm, in particular, excellent in bending wor...
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JP08281479 |
PURPOSE: To obtain a flux cored wire for welding which has high productivity without disconnection even if high-speed drawing is executed in the stage of a small diameter. CONSTITUTION: A flux composed of ferromagnetic raw material powde...
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JP08257765 |
PURPOSE: To perform sound welding by supplying to both ends of a plated band steel an electric power in accordance with the thickness or the passing speed of the band steel and a heating electric power based on a power value determined i...
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JP2566713 |
PURPOSE: To obtain a roll high in rigidity and excellent in cooling efficiency by equipping a water vent hole and an inside cooling box other than a caliber part. CONSTITUTION: A caliber part 13 of a cemented carbide squeeze roll for an ...
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JP08238578 |
PURPOSE: To provide a process for producing a thick and small-diameter electric resistance welded tube which is increased in thickness while its diameter is reduced by a forging machine. CONSTITUTION: This process for producing the elect...
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JP08238579 |
PURPOSE: To provide a process for producing an extremely thick and small- diameter electric resistance welded tube having good dimensional accuracy. CONSTITUTION: This process for producing the electric resistance welded tube by roll for...
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JP08238526 |
PURPOSE: To provide a small electric resistance welded steel tube having the excellent fatigue characteristics on the bending part by bending it to a prescribed bending radius of curvature while loading a stress less than the yield point...
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JP08229689 |
To make it possible to diminish the temperature gradient within the edges to be welded if a welding speed is the same, thereby making it possible to make the welding speed higher than heretofore or to weld such materials which lead to th...
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JP08230045 |
To provide an improved thermoplastic welding process forming a continuous or almost continuous fused part excellent in strength and having consistent quality over the whole of a joining line. An induction coil is passed over an interface...
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JP08223924 |
PURPOSE: To match the phase of the output current of an inverter and that of its output voltage so as to perform an operation at a power factor of 1 and to take synchronization even when a phase is different over a wide range in a high-f...
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JP08215765 |
PURPOSE: To provide a method for forming a welded pipe which yields a product pipe having good dimensional accuracy, welding and surface quality by decreasing a spring back quantity and lessening fin pass forming load without impairing h...
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JP08206854 |
To obtain an ultrasonic vibration welding device which improves the welding efficiency by high-output vibrations and facilitates the conversion of a vibration transmission rod by including a vibration direction converting means between a...
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JP08206851 |
PURPOSE: To stabilize the welding quality of a welded tube by preventing oxidation of a welded part in an inside gas shielding method in a tube manufactured by the high frequency induction welding. CONSTITUTION: A tip part 11a of an iner...
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JP08206852 |
PURPOSE: To provide a joining method of a wide flange beam where two wide flange beams of different thickness at each part are joined in a short time with stable quality by holding an insert of low melting point between end faces of two ...
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JP2546633 |
PURPOSE: To weld a material which may increase welding speed or may induce deterioration of welding quality under a sharp temperature gradient. CONSTITUTION: In welding edges 3.1, 3.2 of a sheet metal, edges to be welded of both sides ar...
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JP08193960 |
PURPOSE: To reliably, speedily, and continuously detect the surface flaw of UO steel pipe welding part by obtaining a group of picture elements where the light intensity of each scanning line in a direction for crossing a light sectionin...
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JP08192278 |
PURPOSE: To obtain an amorphous bulk body of high density and high strength by joining thin strips of amorphous alloy. CONSTITUTION: Thin strips of amorphous alloy are joined and made in a bulk body by applying a pressure of 30MPa or abo...
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JP08192228 |
PURPOSE: To prevent the deformation of an edge of metal strip associated with bending the edge in an edge forming stand. CONSTITUTION: In this method for producing a welded tube which a metal strip is formed gradually to a circular-arc l...
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JP08192206 |
PURPOSE: To provide a device for joining and clamping steel with which excellent joining is enabled without causing temp. difference between the steels when the mutual steel is joined and clamped. CONSTITUTION: In the device for joining ...
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JP2540693 |
PURPOSE: To carry out stable power feeding by providing heat resistant and wear resistant double-layered insulating boards with a dovetail groove between right and left of both sides of a contact shoe to make these exchangeable for high ...
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JP2541396 |
PURPOSE: To directly photograph a joined part of a hot forming tube such as a weld tube, a forge-welded tube, etc., by a camera. CONSTITUTION: As for the welding monitor, in a tube manufacturing line 1 of a hot electro-resistance-welded ...
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JP08187580 |
PURPOSE: Not to be eroded as taking higher input voltage so as to increase welding speed and improve productivity by replacing part of a silicon steel sheet right under a work coil with a ferrite core. CONSTITUTION: An impeder 4A is cons...
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JP08174249 |
PURPOSE: To provide a producing method of a welded steel pipe, by which a good bead shape is obtd. without lowering the productivity and any welded defect. CONSTITUTION: A steel strip 1 continuously carried is formed as a cylindrical- st...
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JP08174080 |
PURPOSE: To manufacture a small diameter resistance welded tube which is used for a structural part in an automobile and machine and which is superior in fatigue characteristics in a bent part. CONSTITUTION: In a small diameter resistanc...
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JP08164417 |
PURPOSE: To provide a producing method for a steel tube for preventing a paper from being stuck on an electric pole or a lighting pole, etc., and further a resistance welded tube with ribs on the external face used in the field of specta...
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JP08155541 |
PURPOSE: To improve the yield at the time of producing a coil having a specific blank by mutually relative-shifting both divided coils in the longitudinal direction of the divided coils so as to form a line symmetry related to a matching...
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JP08155656 |
PURPOSE: To produce the weld zone of excellent quality by uniformly heating the edge part of hoop rolled to cylindrical shape by high frequency induction. CONSTITUTION: A hoop 1 is continuously rolled to cylindrical shape and a pair of c...
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JP08155657 |
PURPOSE: To provide a method and equipment for manufacturing a welded shape of excellent quality at a low cost. CONSTITUTION: In a method for manufacturing a welded shape where steel hoops are butted in the H- or T-shape, the high freque...
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JP2529506 |
PURPOSE: To enable the position of a welded part of a welded tube with a different outer diameter to be detected highly accurately without adjusting the position of height of a device for detecting a mark for detecting the position of th...
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JP08150411 |
PURPOSE: To continuously stably manufacture welded wide flange shapes without stopping welding work. CONSTITUTION: Three coils of a coil C2 for the web and coils C1 C3 for upper and lower flanges are uncoiled and, after they are respecti...
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JP08141603 |
PURPOSE: To join to tip parts in the width direction of slabs without possibility of erosion by joining the center areas in the plate width direction of the tip parts of the slabs, pressing while heating them again by an induction heatin...
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JP08143958 |
PURPOSE: To produce a steel tube excellent in high temp. oxidation resistance, strength, and workability at a low cost by rolling a high Cr steel of specific composition into a steel strip under specific temp. conditions, applying anneal...
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JP08143959 |
PURPOSE: To produce a steel tube used for automobile exhaust system, etc., and having superior oxidation resistance, high temp. strength and workability at a low cost. CONSTITUTION: A high Cr steel, which has a composition consisting of,...
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JP08141602 |
PURPOSE: Not only to attain a satisfactory prejoined surface but also to enable stable and continuous hot rolling. CONSTITUTION: In the inlet side of a hot finishing mill, at least either tip part of the rear tip part of a preceding slab...
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JP08132134 |
PURPOSE: To provide an inner roll type electric resistance welded tube forming machine capable of stably, safely, easily and rapidly achieving the roll exchanging work on the off-line mode, and facilitating the assembling work in on-line...
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JP08127855 |
PURPOSE: To touch up the surface of a plated steel by a thermally sprayed layer excellent in corrosion resistance and having sufficient thickness. CONSTITUTION: At the time of touching-up a Zn or Zn-Al alloy plated layer formed on a plat...
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JP2520547 |
PURPOSE: To eliminate the generation of flashing and improve the welding quality by providing a coil side press roll to push down the steel strip side coil edge and extend an angle shown by the formula on the position right before weldin...
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JP08112678 |
PURPOSE: To easily check and correct the occurrence of a forming defect in pipe stock by mounting a shielding cover covering only the local part around a weld zone to lower part of the lifting section of a welding device. CONSTITUTION: A...
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JP2515470 |
PURPOSE: To eliminate the generation of flashing and improve the welding quality by pushing down the steel strip side coil edge, maintaining an angle shown by the formula above the specified angle and performing welding on the position r...
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JP2515460 |
PURPOSE: To quickly and highly accurately control a butted shape by photographing a seam convergent position of a tube and detecting its butted shape. CONSTITUTION: The seam convergent positions 3, 3' of the roll formed tube are photogra...
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JP08103823 |
PURPOSE: To enable automatic change of an upper roll and to reduce time for changing the upper roll by aligning the clamp member of a clamp means with the clamp hole of a small face plate, inserting the clamp member into that hole with t...
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JP08103815 |
PURPOSE: To prevent generation of flaw on the surface of a work due to edge of roll, further to prevent welding defect due to sticking of cutting chip resulting from generation of flaw. CONSTITUTION: The part 2a more to upper edge, which...
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JP08103817 |
PURPOSE: To reduce the number of workers and to improve safety in operation by making an upper roll axle box to be held pressed at a position for changing the axle box by means of a balancing means and thereby shortening time for changin...
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