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JPH10263686A |
To effectively suppress the thickness increase of a seam part by providing a frame rod to support a bearing to turnably support a reduction roll to reduce the seam part from both the outside and the inside of a tube in a displaceable man...
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JPH10263845A |
To provide a high frequency welding method for a metallic plate, a method that can effectively eliminate uneven heat caused in a material having on its surface a part to be welded. The method is so structured that a first metallic plate ...
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JP2803956B2 |
PURPOSE: To prevent generation of a skelp offset of the V-convergent part upstream side in electric resistance welded tube manufacturing equipment. CONSTITUTION: A couple of detection levers 6 whose one end abuts on the skelp edge upper ...
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JP2803569B2 |
PURPOSE: To Improve the quality of a weld zone by evaporating the lubricant before the welding in a roll type tube forming equipment, and blowing this vapor in the direction away from the welding point to prevent the hydrogen induced cra...
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JP2803928B2 |
PURPOSE: To continuously measure, calculate and control the squeeze quantity during welding by picture-processing an image of a seam convergence part photographed by an image pickup device, obtaining the distance from a V convergence poi...
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JP2803386B2 |
A welding management apparatus for use with a tube production machine adapted to form a workpiece fed from a roll of metal strip in a tubular formation having side surfaces opposite to each other, provide an upsetting pressure to butt th...
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JPH10249433A |
To form a corrosion-resistant covering with a uniform thickness on the inside surface of the tube regardless of the size of tube diameter and tube length by performing the fine welding of a joint part in the longitudinal direction to mak...
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JPH10230371A |
To unnecessitate the skill of an operator, to stabilize quality and to pressure weld with excellent productivity by feeding a prescribed high frequency power after transformation to the heating spiral coil of the heating coil device for ...
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JPH10225717A |
To heat and weld with pressure both edge parts in a stable state, and to enable surely and satisfactorily butt welding by welding the inside surfaces of both edge parts of a cylindrical part to be welded with pressure by squeeze rolls wh...
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JP2788911B2 |
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JPH10211585A |
To provide a manufacture of a steel tube by means of an induction heating method that enables a steel tube with a superior seam and surface quality to be manufactured with high productivity. In the steel tube manufacture by forming a str...
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JP2576821Y2 |
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JPH10175080A |
To reduce joining time and to improve joining strength, in the butt welding of bar stock such as a deformed bar with print (bamboo joint) for building construction, by covering the joining part with a mold, melting that part through high...
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JP2762823B2 |
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JPH10505283A |
A metallic strip having at least one surface enhanced with a texture pattern is formed into a welded tube. A fin insert shapes the edges of the metallic strip prior to welding and minimizes the formation of a protruding weld bead. The lo...
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JPH10137843A |
To facilitate carriage and stacking and to prevent generation of surplus products by cutting the skelp before the leveling process after the uncoiling process, and storing the remaining coil in a condition where a tip of the coil is woun...
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JP2756433B2 |
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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JPH10128557A |
To provide a welding squeeze roll having a cooling jacket in which the risk of leakage of the cooling water to a roller bearing part is reduced. A roll body 4 is provided with a cooling medium jacket, and supported by a fixed shaft 1 so ...
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JP2749014B2 |
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JPH10109184A |
To obtain a resistance welded tube with a stable seam quality from a comparatively thick open tube without causing any flash by preheating both edge parts of the open tube to an unmelting temperature area of a specific temperature or ove...
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JP2745437B2 |
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JP2745823B2 |
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JPH10102205A |
To provide a resistance welded tube of high carbon steel, excellent in hot workability and improved in an ultrasonic flaw detection yield. This resistance welded tube is constituted of a hot rolled high carbon steel plate obtained by app...
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JPH10101436A |
To obtain a member for rotation processing comprising a silicon nitride-based ceramics having resistance to impact resistance and suitable for formation of the surface of amirror by satisfying specific conditions in composition and cryst...
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JPH1088737A |
To provide a beam member and a beam/pillar joint construction having sufficient proof stress and plastic deformation capacity even in the case of pillar/beam joint by a field welding joint system. One end part 4 of a beam member 1 made o...
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JPH1085952A |
To enhance a wear resistance and a seizure resistance of a squeeze roll of a welding machine for a resistance welded tube. A squeeze roll is composed of a roll shaft 10, a roll body 14 and a caliber part 15. A rubber 16 for a shock absor...
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JPH1080779A |
To prevent flashes scattering in a pipe in welding from accumulating on an impeder, mandrel, bead grinding bite and a roller. In a device for manufacturing a resistance welded pipe 2 for which both edges of an open pipe 1 are heated inte...
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JPH1080718A |
To manufacture a steel tube having an excellent seam quality and a surface skin with high productivity. A band steel is preheated and continuously formed by a forming roll group to obtain an open tube 7. Both edge parts of the open tube ...
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JP2732147B2 |
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JPH1076372A |
To provide an open tube edge preheating device which enables the solid phase pressure-welding tube manufacture to be realized that dispenses with bead machining, that secures high productivity, and that produces a steel tube superior in ...
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JP2725482B2 |
A method of forming or reforming a composite material comprises relatively rotating a pair of members (2,3) while urging them together under pressure so as to mix or remix together the materials (1) making up the composite. The urging di...
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JP2723443B2 |
PURPOSE: To prevent a welding defect from being generated by preventing wear of a seam guide and sticking of metal powder on both end faces of a plate bar stock. CONSTITUTION: This device is provided with a driving means by which the pla...
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JP2722926B2 |
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JP2721517B2 |
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JPH1060664A |
To rapidly heat a granular body in the method for producing a combined metallic material such as a wear-resistant liner by generating an electromagnetically induced current in the metallic granular body placed on a base material to heat ...
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JPH1060574A |
To produce an ultrahigh tensile strength steel strip and an ultrahigh tensile strength electric resistance welded tube excellent in durability of ≥980N/mm2 tensile strength by solving a technological problem in the conventional technol...
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JPH1043873A |
To provide a manufacturing method of a steel tube by an induction heating method capable manufacturing the steel tube of excellent seam quality and having excellent surface skin with excellent productivity. After a steel strip 1 is conti...
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JPH1034354A |
To accurately detect defects of a weld zone by sensing, through the image pickup by a television camera, the light quantity varying outside the weld zone by sparks generated at the time of welding. With a television camera 12 arranged ab...
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JPH1029014A |
To reduce occurrence of a defective product and to improve a gurantee accuracy of the quality of a product by using a marking device of the defective position on a plate material to give the mark and cutting off the marked defective posi...
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JPH1024320A |
To manufacture the steel tube having excellent seam quality and surface without performing bead cutting and with high productivity by heating the whole main tube of an open tube to a warm area by a first induction heating coil whose osci...
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JP2701416B2 |
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JPH1015612A |
To provide a method for enabling manufacture of an extremely wall- thick electric resistance welded tube minimized in thickness deviation. In a manufacturing method of the extremely wall-thick electric resistance welded tube which is mad...
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JPH109386A |
To economically manufacture a bellows and coat a bellows main body with PVC in the case that a supporting frame is formed of hard PVC, by performing connection between the outside rib of the bellow main body and the supporting frame by h...
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JPH09327720A |
To economically produce the welded steel plate excellent in pitting corrosion resistance at a welded part without tempering. A steel containing, by mass %, ≤0.20% C, ≤2.5% Mn, ≤0.015% S, 0.003-0.15%, Al and having a value of S/Mn o...
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JP2692388B2 |
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JP2689647B2 |
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JPH09300082A |
To improve wear resistance and seizure resistance of the squeeze roll for welding machine of resistance welded steel tube. The squeeze roll consists of a roll shaft 10, roll barrel 14 and caliber part 15. The caliber part 15 is made of c...
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JPH09295042A |
To finish-cut the end surface of a flat part in an inner diameter grooved pipe by using a flat part length setting jig set to a prescribed size, at the time of cutting off the inner diameter grooved pipe with the flat part. On a plate-li...
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JP2676715B2 |
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JPH09279324A |
To provide an online repair method which eliminates unequal repair, provides beautiful appearance, does not degrade the productivity of a production line and eliminates the restriction on a repair material. A bead cutter 5, a bead cut pa...
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