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JP6443683B2 |
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JP6436181B2 |
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JP2018192521A |
To provide a method for manufacturing a weld steel pipe by which a weld steel pipe having a high roundness can be obtained.A method for manufacturing a weld steel pipe comprises: a preparation process in which a weld original pipe is pre...
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JP2018183787A |
To provide a method of manufacturing a steel pipe capable of improving roundness of a cross section of a pipe end without enlarging only a pipe end part, concerning a steel pipe obtained by forming a steel sheet tubularly by UOE, JCOE, a...
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JP6423888B2 |
A roll straightening machine for straightening an elongated string member includes at least one first straightening roll rotatably mounted around a first rotation axis, and at least one second straightening roll rotatably mounted around ...
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JP6408332B2 |
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JP2018159126A |
To provide a titanium tube molding roll excellent in abrasion resistance, wear resistance, peeling resistance and friction coefficient of roll surface.The titanium tube molding roll includes: a base material having a steel composition co...
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JP6380218B2 |
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JP2018123371A |
To provide a straightening-processed metal rod and a manufacturing method thereof, which is a material for bolts and the like having a compressive residual stress entirely and continuously and increased fatigue strength of the fastening ...
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JP6370511B1 |
A first arrangement push control unit 201 has a plurality of external rollers arranged at equal intervals in the same circle around a rotation axis of an external holder at a first position of one end of a metal tube or metal. Multiple e...
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JP6371251B2 |
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JP2018103231A |
To enable a proper work of welding and a smooth finish of a butting part by correcting a vicinity of two end faces parallel with an axial direction in a cylindrical workpiece into a circular arc form of predetermined curvature to make th...
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JP6344485B2 |
A method for producing a forged crankshaft includes a die forging step of forming a forged blank having a crankshaft shape by die forging, and a pressing step of pressing the forged blank (30) by a first dies (10). The forged blank (30) ...
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JP2018086682A |
To provide a pipe material correction method for correcting the end part of a pipe material by raising the roundness more.A pipe material correction method for correcting the circularity of a pipe material comprises: an intermediate part...
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JP2018069396A |
To provide a tube cutting system capable of stably performing an accurate cutting work of a tube by preventing deformation of the tube due to buckling caused when a cutting device does not move.A tube cutting system 200 sequentially cuts...
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JP6322510B2 |
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JP6317803B1 |
To provide a crankshaft manufacturing apparatus which has a relatively low cost and does not require expert knowledge for operation or repair. A crankshaft manufacturing apparatus includes a twist portion and a hydraulic drive portion. T...
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JP6317802B1 |
To provide a crankshaft manufacturing apparatus capable of correcting a height difference between processes without a separate configuration and performing a straightening process independently. A twist portion 140 has a first jig 144 to...
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JP2018058074A |
To provide an umbrella breakage correction device of section steel which can efficiently flatly correct the umbrella breakage of up-and-down flanges without the necessity for troublesome work such as work for vertically inverting section...
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JP6304802B2 |
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JP2018043286A |
To provide a molding roll excellent in agglutination resistance, abrasion resistance, peeling resistance and a coefficient of friction of a roll surface.A metal tube molding roll has a base material having a steel composition constituted...
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JP3215205U |
To provide a hydraulic straightener for shaft parts. A press machine 1, a screw 2, a micrometer 3, a guide bush 4, a servo motor 5, a V-shaped lifting device 6, a mounting holder 7, a rotating wheel 8, a rotating shaft 9, a motor 10, a b...
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JP6287868B2 |
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JP6288273B2 |
A pipe expander that can manufacture a steel pipe at low cost is provided. The pipe expander includes a cone that is fitted around the tip of a draw bar connected to a cylinder and has an outer periphery of which the size changes gradual...
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JP3215098U |
To provide a guide bush of a hydraulic straightener of a shaft component capable of continuously measuring 360 degrees without having to repeatedly transport the shaft component and saving labor. A press machine 1 is provided above a bas...
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JP3215097U |
To provide a guide post of a hydraulic straightener of a shaft component capable of continuously measuring 360 degrees without having to repeatedly transport the shaft component and saving labor. In a hydraulic straightener for shaft par...
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JP3215099U |
To provide a structure for arranging a hydraulic straightener for a shaft component, which can perform continuous measurement at 360 degrees without needing to repeatedly transport the shaft component and can save labor. In a hydraulic s...
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JP6283927B2 |
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JP6273722B2 |
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JP3214696U |
[Subject] Installation of parts is economized and an oil pressure Stray tenor moving section of convenient pivot class parts is provided. [Means for Solution] Holder 7 for attachment and V type rise-and-fall device 6 which are the oil pr...
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JP3214695U |
[Subject] Pivot class parts are moved, and it does not secede from a base, and provides an oil pressure Stray tenor rise-and-fall device which can perform continuous measurement which is 360 degrees of pivot class parts. [Means for Solut...
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JP6269608B2 |
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JP2018012112A |
To provide a horizontal type bending corrector which has a favorable workability such as a simple positioning of a point to press a pipe for correction and is capable of being realized inexpensively in a simple configuration.A bending co...
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JP2018001248A |
To provide a reasonable manufacturing method premised on using a general-purpose machine tool or a tool and using a general-purpose pipe material as a starting material as much as possible regarding manufacturing of a small-lot bent prof...
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JP6245492B2 |
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JP6229178B2 |
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JP2017532201A |
A flow forming process for the formation of corrosion resistant alloy tubes is disclosed. The process deforms the corrosion resistant alloy plate to form a hollow cylindrical preform with a longitudinal seam region located between the tw...
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JP2017192951A |
To provide a manufacturing method of an aluminum molded article which can securely suppress wrinkles on a joint part of a flange part protruded to an inside of a bending direction of the aluminum molded article having a main body part an...
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JP6213000B2 |
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JP2017172810A |
To provide a method of manufacturing a fin tube type heat exchanger that can prevent a decrease in manufacturing efficiency while suppressing a decrease in performance of the fin tube type heat exchanger due to warpage of fins resulting ...
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JP6203689B2 |
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JP6202189B2 |
A method for manufacturing a press-formed product includes: a first step of preparing a long material having a bending portion; and a second step of decreasing curvature of the bending portion while restricting both ends of the long mate...
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JP6201078B1 |
[Subject] A form-rolling dice for bend reform which can correct a bend of a round bar part of stick material without attaching reform marks, a bend correcting method of stick material, and a manufacturing method of stick material are pro...
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JP6172171B2 |
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JP6155112B2 |
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JP2017100147A |
To provide a compact tool for correction of a pipe.A tool for correction of a pipe for correcting an inner shape of a pipe P by insertion of pin bodies 22A to 22E. Plural pin bodies 22A to 22E, of which outer diameters are different in o...
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JP2017080798A |
To provide a method for correcting and joining steel pipes deformed to be elliptical or the like without any irregularity at a construction site.According to this method for joining steel pipes so as not to generate irregularity when bot...
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JP2017060996A |
To provide a bending device having excellent bending quality and a bending processing method with use of the device.A bending device comprising a pulling-in roller for pulling-in of a material, plural drive rollers which are located on l...
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JP6102245B2 |
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JP6094633B2 |
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