Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 951 - 1,000 out of 1,206

Document Document Title
JP61027107
PURPOSE: To adjust an inclination angle and a crossing angle in case of a cross type inclined rolling by forming a chock of one end of an inclined roll shaft to a spherical surface, supporting it so as to be changeable by a yoke, and sup...  
JP61023506
PURPOSE: To prevent the generation of bending at the front end of a seamless steel pipe in a rolling mill for the seamless steel pipe by measuring the vertical displacement of a billet prior to rolling on the inlet side of a cross helica...  
JP61003608
PURPOSE: To provide lessened manpowder, etc. by correcting and storing the control conditions in the previous using stage of the tools to be cyclically used and presetting a rolling mill according to the stored control conditions in the ...  
JP61003605
PURPOSE: To improve the quality of a pipe by setting and controlling a cross helical roll gap and plug lead so as to maintain the draft at the top end of the plug at a predetermined target value. CONSTITUTION: An arithmetic control part ...  
JP61003601
PURPOSE: To improve size control by turning a rotary housing by a prescribed angle in a positive or negative direction when the shortest distance between each roll surface and a pass line increases or decreases then rolling a material. C...  
JP61003606
PURPOSE: To improve the quality of a pipe by calculating the number of revolution of a billet from the position where the billet is bitten by the cross helical rolls up to the top end of a plug and correcting and controlling the angle of...  
JP60261606
PURPOSE: To provide the titled rolling mill which charges the crossing angle of rolling rolls at the centers of the rolls in a rolling mechanism in which the roll axes are inclined and crossed with each other by supporting the screw-yoke...  
JP60261608
PURPOSE: To perform easily the working of a small tube having a big difference in diameter without causing a vibration in the contraction of tube by inserting a blank tube on a core metal and by executing a blank drawing work and stroke ...  
JP60261607
PURPOSE: To make an immediate countermeasure to prevent thickness deviation and to decrease the generation of a defective seamless pipe by monitoring the generating condition of the thickness deviation in accordance with the moment force...  
JP60257912
PURPOSE: To maintain the specified outside diameter of a blank steel pipe on the outlet side of a reeling mill in the stage of producing a seamless steel pipe by Mannesmann method by controlling the screw down position of rolling rolls s...  
JP60255927
PURPOSE: To increase the efficiency of heating and rolling lines to maximum limit in manufacturing a seamless steel pipe from a round steel slab by controlling the extraction pitch of the round steel slab from a heating furnace on the ba...  
JP60255205
PURPOSE: To reduce the deflection in a roll shaft and to elevate the accuracy in the finishing diameter of the material to be rolled by constituting the rolling load applied on a cantilever roll to be held by a backing-up ring. CONSTITUT...  
JP60250813
PURPOSE: To support stably the blank pipe under rolling and to perform a smooth rolling by arranging one side of a roller shoe to the side of one part of a rolling roll and the other part of a roller shoe to the side of the other part of...  
JP60250814
PURPOSE: To perform with good efficiency a replacement without the dropping and damages of a guide disc by inserting a guide disc replacing jig between the gap of rolls and by moving with locking the locking aperture of the disc. CONSTIT...  
JP60244412
PURPOSE: To prevent generation of a shoe mark by deviating the axial center of a rolling plug always to a specified extent in the direction of any one guide shoe side. CONSTITUTION: The rotating speed of at least either one of driving mo...  
JP60240316
PURPOSE: To improve the smoothness on the surface of a circular conical roll by improving the shape of the rolling area of said roll so as to decrease the quantity of the material to be rolled as far as possible thereby smoothing the str...  
JP60206514
PURPOSE: To improve the quality and yield of a product by obtaining the degree of wall-thickness deviation of a pipe after rolling and adjusting the angular difference between the opposite faces of a skew roll and a plug based on the rel...  
JP60196214
PURPOSE: To improve productivity and quality with a cross helical rolling mill for producing a seamless steel pipe by measuring the eccentric motion of a blank pipe during rolling, detecting the rate and position of end bending and decre...  
JP60191611
PURPOSE: To minimize the speed fluctuation arising in a driven shaft with a driving device provided with two sets of universal joints by making the rotating phase of the 2nd driven shaft changeable. CONSTITUTION: A platform 60 of a suppo...  
JP60191609
PURPOSE: To suppress generation of a thickness deviation and to improve the quality of a pipe by maintaining the angles between the opposed surfaces of the outlet surface of inclined rolls and the reeling part of a plug or the tangent th...  
JP60187415
PURPOSE: To detect a plugless rolling condition in a piercer by fetching the image of the shell of a pipe stock delivered from a piercer into a sensor and computing a measuring value corresponding to the outer diameter of pipe stock for ...  
JP60187428
PURPOSE: To prevent accident due to rolling without a plug by storing a still picture of a bar in a memory when the tip of a mandrel bar enters the visual field of a camera, and giving an alarm when a plug is not mounted. CONSTITUTION: A...  
JP60184410
PURPOSE: To prevent a guide shoe from producing flaws by previously coating a lubricant on the surface of a rolling material to be supplied to a rolling mill provided with guide shoes. CONSTITUTION: In manufacturing (hot pipe rolling) a ...  
JP60170514
PURPOSE: To prevent the front-end warp of a steel pipe by making the ratio of rolling torque between both rolls approximately uniform at a numerical value within a specific range and making the center height of a pipe stock at the inlet ...  
JP60154811
PURPOSE: To make the cut off quantity of crop to be almost zero by rolling only pipe ends, having large wall thickness each, after stretch reducing a pipe stock, and finishing the pipe ends into the prescribed outer diameter and wall thi...  
JP60141315
PURPOSE: To make an installation small in size and to speed up a titled work by forming a pass which becomes narrower while undulating in bellows shape in the inner surface of an annular tool and working a long columnar body inserted in ...  
JP60141314
PURPOSE: To extend the plastically deformed part of a long columnar body into a spiral shape by pressing the working face of a caliber of eccentric ring roll against the column surface of a columnar body to plastically deform a part ther...  
JP60137516
PURPOSE: To prevent abnormal thickness and to reduce dispersion in length or thickness of tube stocks by learning and controlling the amount of advance of a piercing plug basing on the actual thickness or correction term when rolling the...  
JP60137509
PURPOSE: To reduce the twist of a pipe and to prevent the pipe from causing ruggedness, crease, and flaw, etc. by relatively moving a mandrel in the reverse direction to the relative movement of an annular tool with respect to the pipe. ...  
JP60137511
PURPOSE: To provide wear resistance, erosion resistance, and seizure resistance, etc. to a mandrel and to improve its service life by providing a ceramic tip part to a body part of the mandrel made of low-alloy steel. CONSTITUTION: A tip...  
JP60137507
PURPOSE: To obtain long columnar bodies having different finished dimensions in a wire range with the same tool by adjusting the phase difference of eccentric rotation between an eccentric ring roll and a columnar body bearing device. CO...  
JP60137508
PURPOSE: To form-roll long columnar bodies having different dimensions in a wide range by deciding the eccentric quantity of the center of a ring roll caliber with respect to the axial center of a gear by the combination of the key groov...  
JP60127015
PURPOSE: To roll a tube for which allowable limit of inner diameter is designated at high accuracy by determining objective outer diameter at the time of rolling from thickness after sizer rolling estimated from actual result of size of ...  
JP60127008
PURPOSE: To improve remarkably bottom-surface wearing of a plug by providing a hard facing with the use of a wear-resisting metal to the mandrel bar contacting part of the bottom surface of a plug of reeling mill. CONSTITUTION: The conta...  
JP60124405
PURPOSE: To prevent the generation of inner-surface flaws at the front end of a hollow blank piep and to improve the yield of a product by regulating the temperature of a plug arranged at the front side of the billet transferring directi...  
JP60124404
PURPOSE: To prevent the wall-thickness deviation due to eccentricity at the rear end of a hollow blank pipe and to improve the yield of a product by piercing a hole having specific dimensions and shape in the central position of the rear...  
JP60118308
PURPOSE: To reduce the wear of shoe and to prevent a product from flaws generating in its outer surface by deviating the position of shoe-bottom at the contacting surface contacting a shell from the center line of a cross section of shoe...  
JP60115309
PURPOSE: To make a final product accurate in dimensions and to improve its yield by providing a cooling device capable of controlling the flow rate, etc. of a cooling liquid to the front and back of an elongator and making the temperatur...  
JP60115310
PURPOSE: To improve remarkably the advancing speed of a material to be rolled by applying a tensile stress, within a range of the yielding stress of the material, in reducing the wall thickness of tube end by rolling. CONSTITUTION: A man...  
JP60106605
PURPOSE: To finish the inner surface of a blank pipe into an approximately round and to finish the pipe highly precisely in dimension by arranging rolls so that their axial directions have each a prescribed slanting angle with respect to...  
JP60102221
PURPOSE: To control thickness of a tube within allowable deviation by controlling roll opening and plug position using measured value of a thickness gauge. CONSTITUTION: Roll opening is controlled by a roll opening controlling device 4 a...  
JP60099406
PURPOSE: To roll a pipe under high rolling reduction by an installation of small capacity and to press-reduce the pipe in high dimensional accuracy by moving ring rolls in the direction intersecting with a mandrel axis to reduce the wall...  
JP60099407
PURPOSE: To improve the seizure resisting and wear resisting properties of a titled guide shoe by providing prescribed layers containing ceramics to the surface of guide shoe opposite to a material to be rolled which is liable to cause s...  
JP60068104
PURPOSE: To obtain a titled mill capable of stably rolling a blank pipe without damaging its surface by slantly arranging a pair of driving roll shoes, having each inlet and outlet face angles, at the adjacent positions to rolling rolls ...  
JP60064716
PURPOSE: To prevent a seamless steel pipe from producing wall-thickness deviation by detecting the displacement quantity of the axial center of a rolling plug with respcet to the center line in the logitudinal direction of a pass line an...  
JP60056406
PURPOSE: To prevent the seizure between a billet and a guide shoe and to obtain a hollow shell having excellent quality and free from surface defects by applying a hot-rolling lubricant used for rolling tools, etc. to the guide shoe in M...  
JP60054222
PURPOSE: To finish a steel pipe to a non-defective pipe having no uneven thickness by detecting a displacement against a pass line of a rolling plug supporting bar, changing a rotating speed of one of inclined rolls, and correcting the d...  
JP60054223
PURPOSE: To eliminate a displacement against a pass line of a plug, and to finish a steel pipe to a non-defective pipe having no uneven thickness by adjusting an angle of a truncated cone shape of an inclined roll, and equalizing an oppo...  
JP60054209
PURPOSE: To improve the quality of product by displacing the axial center line of a plug bar by a prescribed quantity from the pass line of a mill to the direction of one side of guide shoes located oppositely to each other and setting t...  
JP60054208
PURPOSE: To improve the quality of product by displacing the axial center line of a plug bar by a prescribed quantity from the pass line of a mill to the direction of one side of guide shoes located oppositely to each other and setting t...  

Matches 951 - 1,000 out of 1,206