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JPH05329514A |
PURPOSE: To reduce a manhour to remove lubricant left on the periphery of a mill after rolling when rolling is performed as lubricant is supplied to disk roll type guide shoes in a skew piecer. CONSTITUTION: Aqueous solution 7a of 0.8l/m...
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JPH0586286B2 |
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JPH0586287B2 |
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JPH0586284B2 |
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JPH0586285B2 |
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JPH0585242B2 |
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JPH05317921A |
PURPOSE: To lessen the generation of inside surface flaws by suppression of the formation of the secondary scale on the inside surface of a steel pipe and the lubricating effect of the oxide of additive metallic powder. CONSTITUTION: The...
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JPH05309401A |
PURPOSE: To rapidly execute changing work by providing a rotary housing to which a backup ring is fitted and supported, providing an attaching/detaching rod, revolving device and fastening nut and cutting a groove which is fitted to the ...
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JPH05309407A |
PURPOSE: To eliminate torsion and buckling in a shaft material and to eliminate the problems of whirling, defective biting and breakage of pusher head by biting the shaft material into a rotary elongator after beforehand revolving it bef...
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JPH05305309A |
PURPOSE: To easiy manufacture steel tubes where only the rack-working part is flattened in a highly efficient manner by using a roll where the caliber part of the roll at the final stand of the stretch reducer is flatly bottom-raised. CO...
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JPH0579403B2 |
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JPH05285507A |
PURPOSE: To prevent the generation of abnormality in shape by setting the driving speed of mandrel bar higher than the speed of a tube in the axial direction of tube on the outlet side of a device for rolling a material in rolling with i...
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JPH0579404B2 |
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JPH0578301U |
[Purpose] An object of the present invention is to provide a three-roll elongator capable of accurately adjusting the roll interval by removing the influence of wear and load on the constituent parts. [Constitution] The 3-roll elongator ...
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JPH0576364B2 |
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JPH0576368B2 |
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JPH0576608U |
[Purpose] Make it possible to supply lubricant well even in a narrow space and when there are many supply locations. [Constitution] A pipe 1 that guides the lubricant 3 in the tank 2 to a predetermined position is formed into a portal sh...
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JPH0571321B2 |
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JPH0569602B2 |
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JPH0569603B2 |
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JPH0566202B2 |
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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...
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JPH0565243B2 |
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JPH0563242B2 |
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JPH0563241B2 |
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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...
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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...
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JPH0561003B2 |
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JPH0534801Y2 |
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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...
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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 ...
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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...
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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...
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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. ...
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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...
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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...
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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...
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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...
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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...
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JPH0547603B2 |
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JPH0547285B2 |
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JPH0547286B2 |
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JPH0547284B2 |
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JPH0547288B2 |
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JPH0547283B2 |
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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...
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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 ...
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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...
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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...
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JPH0522322Y2 |
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