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Patent Searching and Data


Matches 951 - 1,000 out of 2,058

Document Document Title
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...  
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 ...  
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  
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 ...  
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...  
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...  
JPH0536121B2  
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...  
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...  
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...  
JPH0520163B2  
JPH0520165B2  
JPH0520164B2  
JPH0510963Y2  
JPH0510962Y2  
JPH0557307A
PURPOSE: To prevent intern surface flaws by reducing slip between a material to be rolled and rolls without impairing the surface properties of the external surface of the material to be rolled and without changing the setting of rolling...  
JPH0550117A
PURPOSE: To suitably control the length of a steel tube through a sizing mill of the final stage of rolling by fixing stands on the final outlet sides of plural sizing mill stands to the maximum defined number of rotation and making the ...  
JPH0542308A
PURPOSE: To offer a planetary reeler for improving the shape of inside surface and accuracy of thickness of tube which is rolled with a rolling mill of mandrel mill. CONSTITUTION: The planetary reeler A is arranged on the downstream side...  
JPH0523711A
PURPOSE: To restrain indentation flaws by inside scales of a hot seamless tube manufactured by piercing and strech-rolling. CONSTITUTION: The inside temperature of the material which is being elongated by rolling is restrained below the ...  
JPH0523710A
PURPOSE: To provide a forge-welded steel tube manufacturing equipment which can manufacture a forge-welded tube with a high efficiency. CONSTITUTION: After a band steel is heated in a heating furnace 5 the band steel is formed into a tub...  
JPH055202U  
JPH055562B2  
JPH057990A
PURPOSE: To prevent a flow generated in inside of a pipe by casting a cast slab for a continuous casting having the specific value of length ratio of a long side and a short side at a specific temp. and rolling the cast slab at the speci...  
JPH05305A
PURPOSE: To provide means for preventing rolling flaws on the outer surface of tube that bring troubles of cost and productivity in the time of manufacturing a seamless tube of high chromium steel by Mannesmann rolling process. CONSTITUT...  
JPH051085B2  
JPH04371307A
PURPOSE: To secure a prescribed target length by reducing the variation in length in the final stage of rolling. CONSTITUTION: The actual length of a base stock which is obtained in the stage just before the final stage of rolling is com...  
JPH04367307A
PURPOSE: To provide a manufacturing method for a two-phase stainless steel pipe excellent in the quality of an outside pipe surface with less rolling scratches. CONSTITUTION: By using a square bloom whose corner parts are preliminarily g...  
JPH0479725B2  
JPH04358025A
PURPOSE: To produce a seamless steel tube having fine-grained structure and excellent in toughness by controlling steel components and hot rolling conditions, respectively. CONSTITUTION: A billet of a steel which has a composition consis...  
JPH0450962Y2  
JPH0475082B2  
JPH0472601B2  
JPH04319002A
PURPOSE: To provide a small inclined planet roll device with high rigidity by restraining fixing one of two input shafts. CONSTITUTION: One or more kinds of working rolls 1, back up rolls 2 or reinforced rings 5 are driven. At the time o...  
JPH04319006A
PURPOSE: To prevent the generation of the outside surface flaw and inside surface flaw of rolled stock by reducing slip between rolls and a material to be rolled in a Mannesmann type inclined piercer. CONSTITUTION: Rolling is executed by...  
JPH04316750A
PURPOSE: To simplify the structure of a machining device and to reduce the size thereof by locating the drum part of a plurality of sets of rollers so that the rollers are brought into contact with the inner surface of a friction ring mo...  
JPH04316831A
PURPOSE: To efficiently subject a shaft material such as a pipe material or a rod material to twist elongation processing at a high speed by selecting a path so as to specify the surface twist angle of the shaft material on an outlet sid...  
JPH04309402A
PURPOSE: To obtain the seamless steel pipe having the performance equal to the performance of a SUS 304 stainless steel by using a SUS 304L stainless steel without executing a soln. heat treatment. CONSTITUTION: This invention relates to...  
JPH04294804A
PURPOSE: To offer a means for restraining the generation of wrinkle-like defects on the outer surface when a solid billet is pierced by hot piercing rolling. CONSTITUTION: The solid billet 4 which is heated in a rotary hearth furnace 1 i...  
JPH0464761B2  
JPH04288995A
PURPOSE: To reduce the shearing strain of a shaft material by constituting a pass so that the work partial charge is migrated continuously from one pair to the other pair in connection with an advance, with respect to two pairs of roller...  
JPH04284904A
PURPOSE: To prevent a cutting surface from being oxidized continuously by atmosphere and to thin the material through hot rolling by carrying out piercing rolling, removal of an oxidized layer, sealing the inside and outside surfaces of ...  

Matches 951 - 1,000 out of 2,058