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JP2015100829A |
To provide a method and equipment for tube expansion processing which enable productivity to be improved and in addition, enable residual strain in a tube after being straightened to be reduced.A method for steel tube expansion processin...
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JP5701623B2 |
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JP5693353B2 |
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JP2015003338A |
To provide a casing of a pipe material correction device and the pipe material correction device which can install a pipe material with a simple technique and can perform circularity correction of the pipe material.A casing of a pipe mat...
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JP5644103B2 |
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JP5636197B2 |
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JP5636198B2 |
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JP2014202285A |
To provide a rolled steel pipe in which a deformation is prevented and its manufacturing and working at site are superior by reducing a spring-out margin over an entire axial length even if the rolled steel pipe has a large diameter and ...
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JP2014200795A |
To make correction gap adjustment easy, and realize operator burden reduction and productivity improvement in a fin height correction apparatus for correcting fin height of corrugated fins.A fin height correction apparatus 100 comprises:...
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JP5602206B2 |
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JP2014184455A |
To provide a manufacturing facility for a shaped steel and a manufacturing method for a shaped steel whereby a shaped steel, of which a curve is eliminated and which is corrected, can be manufactured with a good efficiency and at a low c...
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JP2014168793A |
To provide a chamfer correction apparatus for a cut end part of a pipe, capable of correcting only a usable pipe in a proper shape by chamfering the end part of the pipe, by discriminating the possibility of use of the obliquely cut pipe...
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JP5580988B2 |
A method of forming a wheel disc starts with a flat blank. A plurality of windows are formed in the wheel disc, wherein each window has a respective outer edge proximate with a continuous outer band around a periphery of the wheel disc. ...
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JP2014151363A |
To provide a torsion processing method for long workpieces capable of performing torsion processing easily on a pipe-shape long workpiece.A torsion processing method for long workpieces comprises a step of heating the outer sides of long...
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JP5561233B2 |
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JP5541108B2 |
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JP5541432B1 |
A forming step which fabricates a steel plate by a bending press method to which a manufacturing method of a steel pipe (P) presses down a steel plate by the punch (2) which has a section circle-like peripheral face in a tip part so that...
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JP5521823B2 |
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JP5513849B2 |
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JP5510139B2 |
To provide a method for manufacturing a cylindrical shaft having a stable shape.The method for manufacturing a cylindrical shaft includes: a press punching step of punching out a cylindrical shaft formation member 60 from a metallic plat...
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JP5510193B2 |
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JP5500324B1 |
A dual phase stainless steel pipe includes tensile yield strength YS LT of 689.1 MPa to 1000.5 MPa in a pipe axis direction of the dual phase stainless steel pipe, in which the tensile yield strength YS LT , a compressive yield strength ...
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JP2014087834A |
To correct a wire rod so that strain and residual stress inside the wire rod become uniform in the length direction and the circumferential direction of the wire rod, without enlarging the equipment length.A correction method corrects th...
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JP5462202B2 |
There is provided a method for straightening a steel product, comprising using hard alloy straightening rolls each made of a tungsten carbide-cobalt (WC-Co) based sintered material (hard metal), wherein the hardness of each roll is HRA85...
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JP2014054645A |
To provide a circularity correction method for shortening time required for correction.The circularity correction method comprises an arrangement process S10 of allowing an outer peripheral surface of an inner peripheral side roller to a...
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JP5456062B2 |
In a Turk's head stand for adjusting positions of whole four-way straightening rolls in both vertical and horizontal directions in a state where the four-way straightening rolls are mounted at predetermined positions, a stack body of rol...
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JP5446366B2 |
To provide a bending tool with which a long size material is easily bent even in a small place. The bending tool 2 for bending the long size material 1 includes: a first block 3 which has two load receiving parts 6, 6 for supporting two ...
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JP2014042937A |
To correct roundness of a pipe material at an arbitrary width in an axial direction.A pipe material correction device includes a ring-shaped casing 2 disposed on an outer peripheral surface of a pipe material T and an inner peripheral si...
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JP3188803U |
To provide a straight line straightening machine having two functions in one machine, easy to operate, simplifying a mechanism, and reducing energy consumption in operation. In a lower driven mixed pressure roll type straight line straig...
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JP5412844B2 |
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JP2014018827A |
To provide a straightening press apparatus capable of easily and accurately straightening even a long material that is complicatedly bent such as a waveform.A straightening press apparatus 1 straightens a curve of an object 2 to be strai...
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JP2014018828A |
To correct even a sharp local deformation place by reliably applying a press-contact force in order to plastically deform a pipe material with th small press-contact force to the minimum area.A device 1 for correcting a pipe material inc...
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JP2014012293A |
To correct a flat steel with torsion generated, which is conventionally impossible.An attachable and detachable arresting gear, for horizontally holding a flat steel from above and fixing the flat steel, is provided to fix one end of the...
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JP5394054B2 |
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JP5392925B2 |
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JP5388146B2 |
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JP5382250B2 |
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JP5378522B2 |
In a heat transfer tube for a steam generator, a surface roughness of an inner surface of the tube is measured along a longitudinal direction and an amount of dimensional variation in a length of 50 mm taken from a measured roughness cha...
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JP2013240823A |
To easily position ends of two tubes in a butted condition around the entire circumference.A tube centering device 1 includes: casings 10A, 10B which are arranged on outer circumferences of the tubes with inner circumferential surfaces o...
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JP5355883B2 |
To provide a press forming method and a press forming die by which canning of an square iron can is reduced. In the method for manufacturing a formed article in a square iron can-shape without flanges by press forming, after performing a...
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JP5345031B2 |
The method involves expanding an expander tool (2) with a pipe (1) for flowing the material. The expander tool is placed on pipe by externally introduced directional forces (F1,F2,F3) in the form of straightening triangle. The directiona...
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JP5339517B2 |
To easily correct a deformed cross section material having flanges at both ends so that the end faces of the formed flanges are smooth and a radius of a corner in a rising part in the lower part of each flange is made small as much as po...
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JP5333281B2 |
To prevent the generation of horizontal bend more effectively when expanding a UOE steel pipe. When performing the expansion of the UOE steel pipe 1 by inserting a boom 3 having an expanding head 4 at the top from one end of the UOE stee...
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JP5332922B2 |
To provide a straightening method suitable for straightening T-shaped steel bent in a flange side or a web side: and a straightening apparatus used therefor. In the straightening method of the T-shaped steel for straightening initial ben...
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JP2013212528A |
To provide an apparatus for straightening bend of a shaft member, the apparatus being configured in such a way that the generation of tensile stress can be reduced.An apparatus for straightening bend includes a pair of receiving bases 10...
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JP5315014B2 |
The present invention provides an insertion clamp apparatus, a straightening apparatus and a straightening method for straightening an opening part which is deformed in the radial direction of a workpiece (7). The insertion clamp apparat...
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JP5298646B2 |
To provide a manufacturing method of an electric resistance welded tube excellent in buckling resistance property. In the manufacturing method of the electric resistance welded tube, a steel strip is roll formed while it is being passed....
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JP5301775B2 |
To provide a workpiece receiving device capable of preventing generation of any unexpected external force in a workpiece. The workpiece receiving device receives a long workpiece W to be discharged diagonally and downwardly along the lon...
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JP5298645B2 |
To solve a problem of not sufficiently improving buckling resistance property of an electric resistance welded tube by conventional technology. In the manufacturing method of the electric resistance welded tube, a steel strip is roll for...
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JP2013169594A |
To reduce the number of parts and to shorten working hours of transportation, installation, disassembly and removal, by devising a good way for positioning by use of a jig in welding.A welding jig for a tank welded structure includes: an...
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