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Document Title |
JPH0646564Y2 |
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JPH0692630B2 |
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JPH0692629B2 |
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JPH0692006B2 |
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JPH0688050B2 |
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JPH0685922B2 |
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JPH06297009A |
PURPOSE: To reduce slippage between a material to be rolled and rolls and to prevent the generation of an internal flaw without damaging the surface property of the external surface of the material to be rolled by arranging spray nozzles...
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JPH06277732A |
PURPOSE: To enable a reeling so that the length of the tube on the outlet side of a reeler is coincident with the target length on the outlet side of the reeler or the target length on the outlet side of a sizer. CONSTITUTION: An operati...
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JPH06269817A |
PURPOSE: To stabilize the rotation of an inclined rolling roll by transmitting driving force through a gear from, a rotary housing to a rolling roll. CONSTITUTION: A rolling device for a metallic long columnar body such as a tube or bar ...
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JPH06262219A |
PURPOSE: To provide a disk guide roll excellent in seizure resistance to prevent generation of seizure and an outside flaw and reduction of productivity in the disk guide roll when an alloy steel is rolled for piercing and elongating a s...
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JPH06246329A |
PURPOSE: To decrease temp. difference between the surface and the center of a rolled stock by making at least the inner peripheral surface of a cylindrical guide with which the rolled stock is guided of a thermal insulating material. CON...
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JPH06246341A |
PURPOSE: To automatically measure and also to correct the shape, that is, the bend, outside diameter and outer peripheral length of an electric resistance welded steel tube without arranging a bend straightening machine. CONSTITUTION: In...
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JPH06218406A |
PURPOSE: To provide a piercing/rolling method by which miss roll is not generated during piercing/rolling a material to be rolled and further internal surface flaw of a tubing by forging crack due to rotating/forging effect is not genera...
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JPH06210320A |
PURPOSE: To make a slip between a rolling roll and a rotary housing small, and to stably perform a friction drive of the rolling roll. CONSTITUTION: A metallic long column body is rolled by using three rolling rolls 1 or more arranged wi...
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JPH06210319A |
PURPOSE: To manufacture a seamless steel tube reduced in surface flaws by giving a guide shoe provided on the side surface of a running hot steel tube the vibration of a specific condition. CONSTITUTION: A tube stock HS engaged among the...
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JPH0627201Y2 |
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JPH06198311A |
PURPOSE: To prevent the generation of surface flaws due to scale stuck to the outer surface of a billet in spite of the metal of base material and to improve the surface quality of a product tube which is obtained after succeeding rollin...
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JPH06198310A |
PURPOSE: To stably manufacture a seamless stainless steel tube having excellent surface quality by a rolling method with which high production efficiency is attained. CONSTITUTION: An oxidation inhibitor 21 which is jetted with jetting n...
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JPH06190408A |
PURPOSE: To prevent a perforation defect or the seizure of a rolled stock on a perforator guide shoe from occurring in a mandrel mill by arranging three roll minimizing type cross/oblique mill on the rear surface of the perforator as a m...
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JPH0649202B2 |
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JPH06180290A |
PURPOSE: To provide an apparatus for automatically, effectively and early detecting a surface flaw of a plug for perforating a seamless steel tube such as a heat fused damage, etc. CONSTITUTION: 'A system for scanning a surface of a plug...
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JPH0647126B2 |
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JPH0647123B2 |
PURPOSE:To improve productive efficiency by rolling by preventing bulge with guide shoes which are provided among each roll when the metallic tubing with a large outside diameter into which a mandrel is inserted and which the ratio of th...
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JPH0647124B2 |
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JPH0647125B2 |
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JPH06153200A |
PURPOSE: To measure at which position a drilling roll tip is set with with a mill center as a reference. CONSTITUTION: The measuring equipment is made up of a sensor head 4 of a semiconductor position detector set to an exit of a berth t...
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JPH06142719A |
PURPOSE: To make it possible to measure at which position a roll shaft center is to a mill center as reference. CONSTITUTION: In a centering measuring instrument of a piercing mill to measure the position to the mill center of the roll 1...
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JPH06142722A |
PURPOSE: To measure the pass center of bar steadyer with high accuracy and in a short time. CONSTITUTION: This device consists of a laser beam emitting device 2 to irradiate laser beam which is provided on the inlet side of the bar stead...
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JPH06126323A |
PURPOSE: To descale the inside surface of a pipe while preventing the generation of specks and pits on the inside surface of the pipe by injecting an inert gas in the direction opposite from the injection of high-pressure water. CONSTITU...
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JPH06114410A |
PURPOSE: To reduce the generation of rolling defect and to obtain a high chromium steel seamless tube excellent in the quality of the inside surface of tube by applying water glass or executing aluminum coating on the inside surface of a...
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JPH0699204A |
PURPOSE: To drastically improve the yield of product in the manufacture of a seamless steel tube by an inclining rolling method. CONSTITUTION: In the stage of design of a billet which is fed to a inclined rolling mill, the equivalents 7 ...
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JPH0699206A |
PURPOSE: To efficiently display the burning prevention effect of lubricant, to reduce the cost and time required to repair flaw on the surface of product and decrease the wear of guide shoes at the time of executing piercing rolling of a...
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JPH0623611U |
[Purpose] It is an object of the present invention to provide a bending die apparatus capable of performing bending work on a flange portion of a thin plate-shaped work at low cost and easily. [Constitution] The bending die device 40 is ...
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JPH0688128A |
PURPOSE: To obtain an austenitic fine-grained structure only by seamless rolling. CONSTITUTION: High temp. hollow steel pipe stock produced by subjecting a slab heated to a high temp. to piercing and rough rolling is cooled to the Ar3 po...
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JPH0679310A |
PURPOSE: To prevent flaw on the inside surface of tube that is disadvantageous in respect of cost and productivity by rolling after spraying a lubricant solution of a specified concentration of water glass which is diluted with water in ...
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JPH0663614A |
PURPOSE: To decrease scratch on the inner surface and to reduce the variation of wall thickness by making the region equivalent to the reeling part of a plug an inverse hyperboloid of revolution shape and using this plug in combination w...
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JPH0655204A |
PURPOSE: To improve both a biting property and the quality of internal surface in a rolling by using an inclining roll. CONSTITUTION: In a method manufacturing a seamless tube for which a material to be worked 4 is bitten between plural ...
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JPH0612931U |
[Purpose] It is possible to control the pipe making speed based on the inner surface temperature, which greatly affects the quality of the product, prevent the occurrence of inner surface scratches over the entire length, and manufacture...
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JPH069693B2 |
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JPH069707U |
[Purpose] An object of the present invention is to provide a piercer pusher capable of supplying a billet of an arbitrary length to a piercer without replacing the pusher head. [Constitution] The piercer pusher according to the present i...
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JPH0615311A |
PURPOSE: To prevent the seizure of a lubricant, to eliminate the repair of flaws on the surface of a product and to save the used quantity of the lubricant, as well in the case of rolling a steel tube while feeding the lubricant to disk ...
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JPH064165B2 |
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JPH06513A |
PURPOSE: To prevent inside surface flaw by rolling after increasing the facial angle at the inlet of roll within the range of biting limit that is determined from a draft at the tip of plug at the same time of biting. CONSTITUTION: A hol...
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JPH06243B2 |
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JPH06163Y2 |
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JPH06164Y2 |
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JPH06162Y2 |
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JPH0587324B2 |
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JPH0587323B2 |
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JPH05329514A |
PURPOSE: To reduce a manhour to remove lubricant left on the periphery of a mill after rolling when rolling is performed as lubricant is supplied to disk roll type guide shoes in a skew piecer. CONSTITUTION: Aqueous solution 7a of 0.8l/m...
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