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JPH11179564A |
To provide a welding equipment and method which prevent temperature from lowering in a weld zone through the ejecting of shielding gases and which is free from degradation in the quality of the weld zone in the induction welding using sh...
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JPH11173470A |
To connect piping members with no flux used in a metallic piping system such as a compressor for an air-conditioner where a compressor body acting as a piping member made of iron is connected with a heat transfer pipe formed out of coppe...
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JP2910335B2 |
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JP2910341B2 |
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JPH11156558A |
To provide a welding tube manufacturing impeder which enables not only to improve productivity by obtaining a higher welding heat efficiency than the conventional one but also to be bearable for a long use. This is referred to a welding ...
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JPH11156433A |
To provide the high carbon electric resistance welded steel tube of high workability capable of suppressing a high temp. crack in resistance welding and supressing lowering of a product yield in an ultrasonic flaw inspection due to a hoo...
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JPH11151524A |
To provide a manufacturing method for a steel tube having high strength and high ductility capable of high efficiently producing and also coping with the many kinds-but-small lot production. A strip steel 1 which is rapidly cooled in a h...
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JPH11147180A |
To provide a jointing method for metallic materials having different melting temperatures without using a brazing filler metal. A butted part 10 is formed by engaging and butting a first metallic material 1 having a predetermined melting...
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JP2897519B2 |
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JP2897707B2 |
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JPH11129027A |
To reduce welding defects by accurately performing butt and pressure welding of edge portions of belt members. With this equipment to produce thin-walled tubes, the outer periphery of a steel belt formed in a circular shape is restrained...
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JP2891693B1 |
High frequency heating coil device having sufficient flexibility and heating effect is provided. Coils 2 are contained in outer jacket 1. Coils 2 are made of tube of steel, copper or brass which is annealed sufficiently to be given flexi...
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JP2888786B2 |
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JPH11114623A |
To manufacture a lining steel tube whose inside diameter is constant without bringing about curvature, deformation, or the like. After making a steel strip of 1.6 mm thickness into a galvanized steel strip 11a by galvanizing both sides o...
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JPH11104851A |
To provide a method and device for manufacturing welded wide flange beam capable of improving welding current efficiency better than in the past. In such a method for manufacturing welded wide flange beam as a central part in the width o...
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JPH11104749A |
To improve productivity and material yield of a part to be used as a pillar-like part for a skeletal structure portion of a vehicle and the like or a part to be possibly joined parallely with different kinds of members for a floor and th...
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JPH1190527A |
To prevent generation of a roll mark owing to a slip between a stock and a roll when an electric welded tube is subjected to break down forming. In an earlier process of break down forming of an electric welded tube, both side parts of a...
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JPH1186809A |
To provide a jointing method of a metal container by which a high yield is obtained, and a high sealability between a container body and a lid material is obtained, even though they are made by press molding, without making the inside of...
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JP2875054B2 |
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JP2871404B2 |
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JP2867790B2 |
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JP2865125B2 |
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JPH1157849A |
To obtain a welded steel pipe of a high quality in its welded portion, having a good welded portion, and a right bead cutting is made possible by measuring a hoop edge displacement in front of the least stage squeeze rolling and making a...
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JPH1158032A |
To easily join a heat transfer tube consisting of a double tube to a tube plate side without generating an extra-space in the steam generator of a liquid-metal cooled fast breeder reactor. According to the joining method of this double h...
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JP2856648B2 |
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JPH1133621A |
To provide a method and device for exactly measuring temp. at the time of welding in the edge parts of a steel sheet of the object of welding. The steel sheet 20 on the upstream side of the butted point 15 is photographed with a CCD came...
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JPH1133814A |
To cut away beads produced on the internal surface of an electric resistance welded tube, wherein the cut beads are fed smoothly to a bead cutting machine and cut into short lengths. An internal beads cutting device is composed of a doll...
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JPH1119715A |
To obtain drawing force required to a tube making method using a forming die for drawing a metallic strip into a cylindrical shape by circling endless-shaped rubber belts which are pressed against a welded tube stock from both sides. The...
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JP2848759B2 |
PURPOSE: To provide the welding equipment of the seam welded steel tube with few contact tip defects. CONSTITUTION: In the welding equipment which applies an electric current to both edge parts 1a and 1b of an open pipe 1 via a couple of...
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JP2846138B2 |
PURPOSE:To prolong the life of a work coil by removing magnetic powder from the spacing between an induction heating coil (work coil) and a pipe, thereby averting the discharge by the intervention of the magnetic powder. CONSTITUTION:A m...
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JP2846900B2 |
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JP2843635B2 |
The invention relates to an arrangement for the continuous carrying out by means of induction heat of a continuous weld along a moving web of laminated packing material (8). The arrangement comprises two similar elongated metal plates (1...
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JPH10337609A |
To easily provide by remote operation optimum pressing force required for cutting the inner surface bead of a welded steel pipe with respect to a cutting tool; to dramatically widen the inside diameter application range of the welded ste...
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JP2839566B2 |
Superconductive elongated material made of a corrugated metal pipe (12) which is coated, as substrate, with a mixed oxide (13) whose critical temperature is 100K and over.
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JP2836002B2 |
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JPH10323770A |
To make it possible not to have an occurrence of a bad joint at a welding part of a wide-flange shape welding steel. A flange material and a web material containing a given quantity of C, Si, Mn, P, S, Al, N, Fe are used but it is so arr...
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JPH10315038A |
To improve production efficiency by arranging a rotary cutter and an inside surface bead cutter in series on the steel pipe discharging side of an electric resistance welded tube manufacturing device, and arranging them so as to respecti...
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JPH10314953A |
To provide a power feeding device that is capable of reducing frequency of exchanging a feeding tip for a fin, that reduces cost by dispensing with an operation such as brazing, that surely holds in a proper state a pressing force of the...
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JPH10314835A |
To provide the pushing-up roll with a shape effective to suppress an edge wave and to control the butting state of both edge parts and the manufacture of the welded tube using the same. This manufacturing device is constituted so that wh...
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JPH10314842A |
To simply and effectively eliminate deformations such as shear droops, burrs, etc., generating at the tip parts of a web material supplied as a base stock to the manufacturing line of the welded section steel. In this method, while trans...
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JP2828600B2 |
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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JPH10305312A |
To improve quality of seam and surface of pressure welded steel pipe by two stage pressure welding system, by method of having the reducing atmosphere kept at specific r-value in the heating area from where welding by abutting is carried...
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JPH10305311A |
To reduce the ratio of uneven wall thickness, after sinking mill processing at the direction of the peripheral of pipe by means of controlling the direction of coolant injected from nozzles faced to a pressure welding part, and keeping h...
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JPH10305370A |
To obtain the joining apparatus suitable for a mass processing, construction of which is inexpensive and working hour is short, by conducting a heat welding for the metal pipes, first having their fitting faces treated a brushing, and ap...
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JPH10296458A |
To unnecessitate bead cutting by executing edge preheating for heating both edge parts of an open tube to unmelting temp. region not lower than Curie point by induction heating, heating them to a melting temp. region, butt- joining them ...
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JPH10296493A |
To provide a soothing device for a steel tube seam part capable of dissolving the wall build-up in the seam part generating on the way to manufacture a solid phase pressure welded tube. In the smoothing device of the steel tube seam part...
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JPH10296378A |
To produce an electric resistance welded tube of a thick wall a and a few wall eccentricity by using a plug having a taper angle smaller than the taper angle of a die by a specific angle and pushing-in a tube with a constant force. A plu...
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JPH10296492A |
To provide a smoothing device for a steel tube seam part capable of dissolving the wall build-up in the seam part generating on the way to manufacture a solid phase pressure welded tube. This device is provided with plural inner surface ...
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JP2819778B2 |
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JP2814942B2 |
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