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Patent Searching and Data


Matches 551 - 600 out of 1,579

Document Document Title
JPH10180313A
To roll a hard-to-work tube stock such as Ni-base alloy without generating plastic deformation on a mandrel. This rolling method is composed so that the tube stock H is drawn while imparting tensile force to the tube stock H from the fro...  
JPH10180311A
To provide a method for preventing the slip of piercer rolls by jetting a slip preventing agent to a round bar and the piercer rolls in piercing with a piercer. In the method for preventing the slip of the piercer rolls 1, the current va...  
JP2770870B2
PURPOSE: To manufacture an aluminum tube high in out-of-roundness and adequate in surface roughness by working the tube under rolling pressure after the outer peripheral surface of the tube is cut. CONSTITUTION: After the outer periphera...  
JP2767326B2  
JPH10505789A
The invention concerns a method for the production of a seamless hot-finished tube from steel with reduced deformability, in particular roller-bearing steel, the method calling for a pretreated and degassed as well as deoxidized liquid s...  
JPH10140238A
To produce a seamless steel tube for an accumulator for air bag system, excellent in workability and weldability and having high strength and high toughness. A steel, having a composition consisting of 0.01-<0.20% C, ≤0.50% Si, 0.30-2....  
JP2754999B2
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...  
JPH10130687A
To obtain a lubricant compsn. for hot working which can reduce the coefficient of friction between a working tool and a workpiece and prolong the service life of a working tool in hot working, such as tilting rolling of a seamless steel ...  
JPH10128427A
To minimize the roughness of the outer surface of a seamless steel tube, to minimize the polishing work or the like in off-line and to save labor by jetting a high pressured water on the outer surface of a hot tube under carrying before ...  
JP2752042B2
An arrangement for inclined rolling of tube-and bar-shaped rolling articles has two or more driven rollers rotatable about a longitudinal axis of a rolling article and supported in or on a rotor which surrounds the rolling article. The r...  
JP2750322B2  
JPH1094808A
To provide a roller shoe for inclined rolling mills by which so-called flare (enlargement of the diameter in end parts) in the end parts of a pierced or stretched tube stock in the inclined rolling mill for manufacturing the seamless ste...  
JP2737310B2  
JPH1085804A
To provide a method for manufacturing a seamless tube which consists of an α-type or α+β type titanium alloy containing an inhibstor of the coarsening of structure, whose strength and ductility are higher in the same order in both dir...  
JPH1080715A
To use a steel tube cold worked as it is by controlling a final finish working rate as taking a ratio of a working rate between tube thickness and outer diameter for a parameter when producing a two phase or austenitic stainless steel tu...  
JP2730460B2
PURPOSE: To improve a peeling limit, and to reduce the generation factor of a guide shoe mark by that the projection of a piercing shell between a main roll and a guide shoe, becomes less. CONSTITUTION: When piercing a seamless steel pip...  
JP2729209B2
To provide a method for diagonal piercing rolling which is capable of averting the incorrect rolling and working hindrance of thick or thin tube stocks of an about middle extent and a diagonal piecing roll stand for this purpose. This ma...  
JP2726588B2  
JPH1058014A
To contrive reduction of flaws on the outside surface to which a guide is related and prolongation of the life of the guide in rolling with an elongator. In the case that a hollow tube stock after piercing with a piercer is elongation ro...  
JP2718865B2
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...  
JP2715396B2
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...  
JPH1043803A
To extend plug life by using a temp. control means, arithmetic means, controller, etc., in the piercing rolling method of hot seamless metal tube so as to suppress erosion of the tip part and side face part of a plug. An arithmetic means...  
JP2705499B2
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...  
JP2703814B2  
JP2696718B2  
JP2697144B2  
JPH105820A
To provide a piercing rolling method of a metallic tube. When the opening degree of main rolls is expressed by Rg, the opening degree of guide members by Gg, the outside diameter of a solid round billet by Bd, the effective length of a p...  
JP2558263Y2  
JP2692524B2  
JP2692474B2  
JPH09310121A
To produce a steel tube excellent in high temp. creep fracture characteristics and toughness by subjecting a steel stock having a specified compsn. to blooming, executing cooling, holding the same under soaking to an austenite single pha...  
JP2671960B2  
JP2672441B2  
JPH09271810A
To prevent generation of flaw on an external surface by specifying so that a radius of a corner part of slab has a specified ratio to a side length when a martensitic stainless steel slab is pierced by a press roll piercer. A martensitic...  
JP2550896Y2  
JP2550897Y2  
JP2661490B2  
JP2662122B2  
JPH09239416A
To surely prevent the generation of inadequate pullingout of a mandrel without frequent control action during operating a retract mandrel mill and to stably execute the pulling-out of the mandrel over a long period. During operating roll...  
JPH09220603A
To highly efficiently manufacture a thick-wall seamless steel tube having the highly precise dimension of an outside diameter by restricting the variation of outside diameter by a plug mill, controlling the temp. of a stock tube to a pre...  
JP2643369B2  
JP2641834B2  
JPH09201604A
To provide a method by which a seamless tube without a carburized layer on its inside surface is highly efficiently manufactured. Rough rolling with a mandrel mill using a graphitic lubricant, reheating and finish rolling with a stretch ...  
JP2636683B2
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 ...  
JP2605541B2
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...  
JP2605561B2
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...  
JP2605560B2
PURPOSE: To simultaneously measure not only the roll center of bar steadyer but the parallelism to the mill center. CONSTITUTION: This device consists of a laser beam emitting device irradiating in the opposite direction with laser beam ...  
JPH09108712A
To prolong the life of a guide shoe, in rolling a seamless steel tube by a inclined rolling mill, by providing a water passage inside the guide shoe of the rolling mill and rolling with this passage cooled by water. A crank-shaped water ...  
JPH09108711A
To eliminate uneven thickness produced in base stock, forming and bead grinding, to allow on-line tube making of a steel tube having a satisfactory dimensional precision comparable to a conventional drawn tube, and to obtain a technology...  
JPH0994623A
To provide a manufacturing method for a metallic tube with spiral fins. In the manufacturing method for the metallic tube with the spiral fin having ≥5mm height on the outer periphery of a pipe stock by applying cold-cross helical roll...  

Matches 551 - 600 out of 1,579