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Patent Searching and Data


Matches 951 - 1,000 out of 2,086

Document Document Title
JPH05237516A
PURPOSE: To improve controllability to a major diameter of a hollow and to prevent a disk shoe from seizing in a skew rolling mill in which the disk shoe is used. CONSTITUTION: In the method for rolling a seamless tube by the skew rollin...  
JPH0565243B2  
JPH0563242B2  
JPH0563241B2  
JPH05228514A
PURPOSE: To extensively set a diameter expanding ratio without generating a defect in biting a material by constituting the front side of the gouge part of each rolling roll of a skew rolling mill in the shape of a barrel and its rear si...  
JPH05228515A
PURPOSE: To prolong the life of a plug when lubricant is supplied to the inner surface of a tube and to improve the quality of the inside surface of a rolled tube in the elongator rolling. CONSTITUTION: A reinforcing layer 11 is formed o...  
JPH0561003B2  
JPH0534801Y2  
JPH05220507A
PURPOSE: To provide a method for forming a steel tube with an arbitrary outside diameter and at an arbitrary drawing rate without necessitating roll change in the drawing/forming stage of an electric resistance welded tube. CONSTITUTION:...  
JPH05212415A
PURPOSE: To provide a means wherein a seamless steel tube free from ununiform thickness can be manufactured by reeler. CONSTITUTION: The surface temperature of a plug 2 in its axial direction just after reeler rolling is measured by a ra...  
JPH05212416A
PURPOSE: To provide a tube manufacturing means which can reduce wear of a plug by reeler and prolong the life thereof. CONSTITUTION: The surface temperature of the plug 2 in its axial direction just after reeler rolling is measured by a ...  
JPH05208203A
PURPOSE: To prevent the generation of a rash flaw on an inner surface in manufacture of a seamless clad metallic tube by hot rolling work of a hollow double tube stock which a metal difficult to be worked is arranged to the inner layer. ...  
JPH05200412A
PURPOSE: To provide a new constitution capable of easily and rapidly exchanging a roll and a guide disk shoe while maintaining the rigidity of device high. CONSTITUTION: This machine is provided with a mill housing 13 having an opened si...  
JPH05200413A
PURPOSE: To eliminate roll burning in seamless steel tube rolling and to prevent roll slip. CONSTITUTION: Lubricating effect of cooling water is decreased and burning of rolling powder to a roll is reduced by stopping cooling water suppl...  
JPH05185116A
PURPOSE: To obtain a billet which can prevent biting to a roll and careless defects and a seamless metallic tube by using the billet in piercing and rolling by an inclined piercing machine. CONSTITUTION: The billet 1 for the seamless met...  
JPH05185132A
PURPOSE: To suppress biting failure of a hollow tube stock at an elongator and pit flaws on the outer surface by forced-in scales in the manufacture of a seamless steel tube by the plug mill rolling method of the double piercing system. ...  
JPH05185131A
PURPOSE: To prevent the galling flaws of the inside surface of a hollow shell in elongation of the shell by an elongater in the production of the seamless stainless steel pipe by a plug mill rolling method of a double piercing system. CO...  
JPH05185113A
PURPOSE: To prevent the galling flaws on the inside surface of a clad pipe stock in elongation of the pipe stock with an elongater by rolling the pipe at a specific elongation rate or above and cooling the pipe. CONSTITUTION: The clad pi...  
JPH05185117A
PURPOSE: To prevent the bottom of a tube from being cut off without generating inside scratches and blocking the bottom, improve the rolling efficiency and carry out high quality of rolling. CONSTITUTION: The terminal of a tube material ...  
JPH05185114A
PURPOSE: To suppress the generation of the galling flaws on the inside surface of a clad pipe stock by an elongater, the degradation in yield by boundary peeling and the degradation in pipe making efficiency and working rate by rolling t...  
JPH05185115A
PURPOSE: To prevent indents in the shape of an inside pit given by pressing in inside scales of a hollow tube stock. CONSTITUTION: A draw starting position of the hollow tube stock 3 by rolling rolls 1 and a plug 2 is set on the outlet s...  
JPH05177221A
PURPOSE: To prevent the peeling in the terminal part of a tube material from being generated when perforation rolling or drawing is carried out by an inclined rolling mill provided with a disk roll as a guide member. CONSTITUTION: The te...  
JPH05177220A
PURPOSE: To provide a method and a device for carrying out inclined rolling for nearly eliminating a gap between the inclined roll and a disk roll and preventing down buckling. CONSTITUTION: A billet 6 is rolled for perforation by an inc...  
JPH05177219A
PURPOSE: To simplify the maintenance and checking of an inclined rolling mill by arranging the driving sources of a pair of inclined rolls at positions nearly equal to each other in height. CONSTITUTION: Perforating rolls 1L, 1R are rota...  
JPH0547603B2  
JPH0547285B2  
JPH0547286B2  
JPH0547284B2  
JPH0547288B2  
JPH0547283B2  
JPH05169110A
PURPOSE: To provide the skew rolling method and the device being suitable for the thick wall tube to improve the piercing efficiency. CONSTITUTION: The billet 6 is pierced with the skew rolling machine providing the piercing rolls 1L, 1R...  
JPH05169121A
PURPOSE: To derive an exact thermal expansion coefficient at every steel kind, and also, to obviate troublesomeness for executing a table maintenance in a computer. CONSTITUTION: With respect to a hot target outside diameter at the time ...  
JPH05171165A
PURPOSE: To provide a lubricant not causing the generation of inner surface flaws due to the adhesion of the lubricant to the inner surface of the metal pipe, having excellent lubricity, and free from danger of carburization. CONSTITUTIO...  
JPH05161903A
PURPOSE: To miniaturize an equipment by shortening the length of driving shaft of a rolling mill, lowering the installed height of driving source or shallowing the installed depth of it. CONSTITUTION: A pair of rolling rolls 11, 12 and d...  
JPH05154512A
PURPOSE: To restrain phenomenon of working crack, etc., by executing a pierce rolling while pushing at least a part of the peripheral surface of unpiercing part with roller guides in the interval until each part of the solid billet reach...  
JPH0522322Y2  
JPH05138213A
PURPOSE: To greatly improve the life of a piercing plug even with a material having high hot deformation resistance by applying a lubricant on the surface of the plug and biting the plug into a billet without wetting the formed lubricati...  
JPH05138212A
PURPOSE: To provide an on-line control method for an inclining type piercer. CONSTITUTION: At the time of piercing a material to be rolled by an inclining type piercer arranging one pair of disk shoes 4, 4 at both sides of rolling range ...  
JPH0536121B2  
JPH05131203A
PURPOSE: To make a disk roll easily attachable/detachable without separating it from the driving line by providing at least two sizing rolls and two freely detachable disk rolls axially supported inside a mill stand. CONSTITUTION: At the...  
JPH05123742A
PURPOSE: To efficiently manufacture the thin wall long size tube inexpensively by reducing the wall thickness with the skew roll and easily drawing out the core metal rod too, at the manufacturing time of the tube. CONSTITUTION: In the t...  
JPH05123714A
PURPOSE: To easily adjust a mutual position between disk rolls and fixed guide shoes used as guide members for a material to be rolled. CONSTITUTION: Round a pass center line X-X of a solid billet, guide holders 5 are positioned on one s...  
JPH0532121B2  
JPH0527483B2  
JPH0596308A
PURPOSE: To make a sizer which is used for manufacturing a seamless steel tube so that it can be used for both of 2-roll and 3-roll sizers while screw down device and driving system are used in common. CONSTITUTION: A housing 11 for 3-ro...  
JPH0523842B2  
JPH0569012A
PURPOSE: To prevent defective biting by retracting a plug to the outlet side of rolls by narrowing the roll gap after the tip of a tube stock is bitten between the rolls and advancing the plug by enlarging the roll gap after the end of t...  
JPH0570782A
PURPOSE: To prevent carburization, which tends to be a problem when graphite lubricant is used, and to prevent the dents on the inside of a pipe due to oxide scale. CONSTITUTION: A mixture of a calcium compound and graphite is used as th...  
JPH0569011A
PURPOSE: To prevent misrolling by specifying the relationship between the diameter of a base stock for material to be rolled, distance from the starting position of gripping the base stock with inclined rolls to the tip of a plug, cleara...  
JPH0520165B2  

Matches 951 - 1,000 out of 2,086