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Patent Searching and Data


Matches 851 - 900 out of 2,092

Document Document Title
JPH079013A
PURPOSE: To bore billets having different kinds of major diameters without injuring the outer surfaces by providing at least a pair of guide rolls having a concaved surface each which can adjust interval, crossing angle and revolving spe...  
JPH071010A
PURPOSE: To eliminate a hot saw and to improve the yield of tube manufacturing by pressing down fins, over fillings which are generated by elongating with a mandrel mill and crushing allowance at the time of bar stripping by providing a ...  
JPH06104243B2  
JPH06344009A
PURPOSE: To prevent the generation of inner surface flaw of a seamless steel tube and miss roll by providing spraying nozzles for jetting/supplying an abrasion increasing agent to the tip of the inlet guide for a billet. CONSTITUTION: Sp...  
JPH0646564Y2  
JPH0692630B2  
JPH0692629B2  
JPH0692006B2  
JPH06315703A
PURPOSE: To provide a rolling mill for piercing and elongating of a solid billet with which roll adjustment and exchange are easy. CONSTITUTION: This rolling mill has an open top and an open interior formed by a plurality of vertically e...  
JPH0688050B2  
JPH0685922B2  
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...  
JPH06297008A
PURPOSE: To facilitate the adjustment and replacement of a two-high cross rolling mill. CONSTITUTION: Each of both bearing modules 9 of each guide disk 4 is arranged in a vertically adjustable fitted module 13 so as to be swivelable arou...  
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...  
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 ...  
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...  
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...  
JPH06248360A
PURPOSE: To prevent the lowering of calculating precision to temp. of a billet temp. caused by temp. of a furnace hearth at the time of inserting the billet in a rotary furnace hearth type heating furnace. CONSTITUTION: In a control meth...  
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...  
JPH06238383A
PURPOSE: To efficiently and inexpensively produce a hyperbolic body with smooth curve surface by rotating each form rolling roll and cylindrical base stock around their axial center lines while each form rolling roll is pressed to a cyli...  
JPH0661301U
[Objects of the Invention] By equipping a position just before rolled material is bit by the disk roll with the ON side guide, a good-shaped joint non-metal tube is manufactured, and the inclination rolling mill which raises the yield is...  
JPH06238309A
PURPOSE: To suppress the generation of inside surface flaw without applying graphite lubrication to the inside surface where is the possibility of carburizing by specifying a biting angle that is an angle of contact of the inside surface...  
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...  
JPH06218407A
PURPOSE: To surely roll a sort tube stock with a simple means by introducing the tube stock into a rolling mill with rolls and a pre-reduction equipment and guiding rotation as a fixing clamper. CONSTITUTION: This pre-reduction equipment...  
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...  
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...  
JPH0627201Y2  
JPH0654403U
[Objects of the Invention] Obtain a uniform thick product to a longitudinal direction, without control of real time being possible and moreover producing a crack inside a steel pipe to the material under rolling. [Elements of the Inventi...  
JPH0654402U
[Objects of the Invention] Obtain a uniform thick product to a longitudinal direction, without control of real time being possible and moreover producing a crack inside a steel pipe to the material under rolling. [Elements of the Inventi...  
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...  
JPH06198375A
PURPOSE: To reduce the thermal load of a rolling roll by effectively heating the ring material which is rolled between upper and lower rolling rolls. CONSTITUTION: A guide roll 9 which is brought into contact with a ring material 3 to be...  
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...  
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...  
JPH06182426A
PURPOSE: To improve the quality of an inside surface and to reduce the maintenance cost as to the inside surface. CONSTITUTION: In a method in which a hot drawn seamless carbon steel tube is manufactured by drawing it to reduce the thick...  
JPH06182428A
PURPOSE: To improve safety of descaling the inside surface of a seamless steel tube. CONSTITUTION: By this device, a mandrel bar 2 fitted with an injecting nozzle 1 at a tip end is supported by a bar block 3 and fixed on a truck 4 and th...  
JPH0649202B2  
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...  
JPH0647126B2  
JPH0647123B2  
JPH0647124B2  
JPH0647125B2  
JPH06172858A
PURPOSE: To obtain a seamless steel tube excellent in SCC resistance and having high strength and high toughness by specially controlling steel components and hot rolling conditions, respectively. CONSTITUTION: A billet of a steel which ...  
JPH06170415A
PURPOSE: To improve the roundness without changing rolls at an arbitrary external diameter by rotating and revolving plural recessed rolls having a radius larger than a pipe radius each. CONSTITUTION: Plural inclinable recessed rolls hav...  
JPH06172854A
PURPOSE: To obtain a steel tube as rolled having a fine grain structure of over an austenitic grain size No 8 by cooling after a hollow steel tube stock containing the prescribed quantity of Nb is worked under the prescribed condition wi...  
JPH06154816A
PURPOSE: To provide a method for manufacturing a seamless steel tube by which the drastic modification of equipment is not required and the inside flaw due to forging crack is not generated by re-suppressing the generation of forging cra...  
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...  
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...  
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...  
JPH06142749A
PURPOSE: To restrain the generation of shoe mark caused by seizure of a guide shoe. CONSTITUTION: A method for lubricating the outer surface of a seamless tube is one, which a lubricator composed of water solution containing 10-60wt.% me...  
JPH06142721A
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 irradiating with laser beam in the opposite direction which is provided on o...  

Matches 851 - 900 out of 2,092