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JPS6229128Y2 |
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JPS6227281Y2 |
A method and apparatus for producing a thin metallic tube having a trailing end portion which optionally can be formed with an external diameter substantially corresponding to or varying from that of the remaining rolled portion of the t...
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JPS62148003A |
PURPOSE: To suppress the temp. increase of guide shoes and the generation of wear and damage by disposing a pair of guide shoes to both sides of a rolling region of rolling rolls which are disposed with inclination and exciting the guide...
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JPS62142008A |
PURPOSE: To obtain a roll for an elongator which excels in all of wear resistance, surface roughening resistance and strength by adding V to a spherical graphite steel to improve the strength and wear resistance thereof and spheroidizing...
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JPS62127107A |
PURPOSE: To prevent the wear, damage, etc., of a guide shoe by moving the guide shoe in the progressing direction of a rolling stock and by returning it to the original position from the moving end at the rolling completion time while un...
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JPS62124003A |
PURPOSE: To improve mechanical efficiency and to permit easy carrying in and out of a material by disposing one of the driving systems for rolling rolls of a crossing type cross helical rolling mill on the inlet side of a pass line and d...
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JPS6219362Y2 |
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JPS62104611A |
PURPOSE: To control an extrusion of a blank pipe, and to roll smoothly a rolling blank pipe having a high quality by detecting a drive roller shoe reaction force, and bringing a shoe to a driving control so that a ratio made by a tangent...
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JPS6272702U |
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JPS6297709A |
PURPOSE: To easily determine adequate and correct rolling conditions by selecting the equation of the conditions for preventing the generation of a defective bite and tail clogging as well as the equation of the conditions for preventing...
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JPS6293011A |
PURPOSE: To manufacture the seamless circular pipe of excellent quality without causing the inner face angular expansion of hexagonal shape by arranging the drawing roll which is composed of three pieces to be used for the finishing draw...
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JPS6289504A |
In the manufacture of seamless tubes, a billet is heated to rolling temperature, is pierced in a skew rolling stand 7, is stretched into a tubular bloom in a transverse rolling line 14 and rolled out into a finished tube in a finish-roll...
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JPS6281205A |
PURPOSE: To adjust a cross angle and a tilting angle of upper and lower rolls to an optimum value and to prevent deformation and/or fissures of a pipe end by detecting a position of the pipe end using a couple of stock detectors, detecti...
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JPS6250803U |
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JPS627244B2 |
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JPS6234609A |
PURPOSE: To suppress the wear of guide shoes and to prevent the formation of flaws on the surface of a pipe stock for a seamless steel pipe to be formed by supplying a liquid lubricating agent to the specific part between a round billet ...
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JPS6224805A |
PURPOSE: To prevent the increase of electric power for driving rolling rolls during piercing of the rear end of a round billet by heating the rolling rear end of the round billet and piercing the same in the stage of piercing the round b...
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JPS6215816U |
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JPS626706A |
PURPOSE: To exert tensile stress to a rolling material and to control the bulging in the direction perpendicular to the axis thereof by exerting spiral movement and tensile force to a chuck part for chucking the front end of the rolling ...
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JPS61293602A |
PURPOSE: To increase the number of pipes to be rolled by a guide shoe tool for rolling by partly decreasing the thickness in the sliding part of the guide shoe tool and oscillating said part thereby decreasing the friction of the sliding...
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JPS6160721B2 |
PCT No. PCT/JP81/00150 Sec. 371 Date Mar. 15, 1983 Sec. 102(e) Date Mar. 15, 1983 PCT Filed Jun. 30, 1981 PCT Pub. No. WO82/00108 PCT Pub. Date Jan. 21, 1982.A control method for controlling the screwing down pressure provided in a reeli...
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JPS6158267B2 |
Disclosed is a high-efficiency manufacturing installation in which seamless steel pipe rolling and finishing lines are matched in capacity with each other and are formed into a single continuous lines. The high-speed rolling line extends...
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JPS61202721A |
PURPOSE: To manufacture a clad pipe having a well adhered mating surface of inner and outer pipes by extracting air in the clearance between inner and outer piper stocks through a groove formed in the peripheral direction between both pi...
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JPS61202706A |
PURPOSE: To exchange rapidly and easily roll shoes and to stabilize the supporting state of the roll shoe by connecting a shoe base, used for rotatably supporting the roll shoe, to a slide block capably of engaging and disengaging them w...
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JPS61199504A |
PURPOSE: To prevent an invasion of air to a fitting part by a simple technique and to improve the productivity of the titled pipe, by providing a glass material to a groove formed at the lapping part of both ends of inner and outer pipe-...
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JPS6139126B2 |
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JPS6139127B2 |
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JPS61139405U |
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JPS61176414A |
PURPOSE: To decrease the deviation amount of a rolling plug from a mill center and its speed ratio to a rolling roll, by controlling the rotational speed of plug so as to relate it specifically to that of a rolling roll during the rollin...
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JPS61169103A |
PURPOSE: To obtain a seamless steel pipe excellent in surface properties by manufacturing the pipe under the optimum conditions by using the relations between the previously obtained reeler rolling conditions and the dimensions and surfa...
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JPS6132081B2 |
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JPS6132082B2 |
An inclined rolling stand for reducing a starting material to a pipe or rod, which includes a roll carrier adapted to be driven and to permit a central passage of the material to be rolled. The roll carrier includes three conical substan...
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JPS61162217A |
PURPOSE: To enable the rolling of a larger sized material and high alloy material with increasing the rolling capacity by eliminating the peak electric power to generate at the piercing completing time of a squeeze rolling by subjecting ...
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JPS61144204A |
PURPOSE: To restrain the bulging of a stock by providing a forward tension thereto, by providing a roll parts to a rolling roll from its inlet side to outlet side and making the maximum diam. of the 3rd roll-part larger than the roll dia...
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JPS61144218A |
PURPOSE: To manufacture easily and inexpensively an intermediate corrosion- resistant and triple-ply clad steel pipe, by wrapping a stainless steel of specific components or a nickel-base alloy around a easy-to-work carbon steel by casti...
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JPS61144205A |
PURPOSE: To promote the elongation of a pipe stock by restraining the increase of its expanding rate, and to improve the operability of rolling and the quality of product, by using the small-diam. front end of a plug as a guiding part ha...
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JPS61144207A |
PURPOSE: To roll smoothly a pipe stock while preventing its squeezing-out phenomenon by setting the starting position of the thickness-reduction of pipe stock, performed by rolling rolls and a plug, from the gorge part of rolling roll to...
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JPS61140308A |
PURPOSE: To roll smoothly a pipe stock by rolling the pipe stock under the previously set reduction rate of wall-thickness, free from generating a flare at the rear end of pipe stock, in elongating a hollow pipe stock into a seamless pip...
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JPS61140309A |
PURPOSE: To improve the manufacturing speed of a titled tube as well as to maintain the accuracy of groove dimensions and the smoothness of tube outer surface, by using specific rolling rolls, in a device of manufacturing a tube having g...
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JPS61137612A |
PURPOSE: To prevent the wall-thickness deviation of a metallic pipe by rolling again a part, rolled by a roll of one side and a reeling part of plug, by a roll of the other side and the reeling part of plug, in piercing the pipe by skew ...
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JPS6127121B2 |
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JPS6182703U |
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JPS6182704U |
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JPS6121297B2 |
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JPS6116885Y2 |
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JPS6120365B2 |
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JPS6199503A |
A method of forming seamless metal tubing and pipes of large diameter in excess of 500 mm diameter. A thickwalled hollow body is made by continuous casting. Rolling the continuously cast hollow body over a mandrel in an oblique rolling m...
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JPS6199502A |
PURPOSE: To control the amount of bulging in the direction perpendicular to the axial direction of a stock between respective rolls, by providing a tensile stress to the stock in its axial direction, in rolling a stock into a seamless pi...
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JPS6117563B2 |
A skew rolling mill for tubes is provided having a stand upright in two parts laterally separable along a vertical parting line, one part being fixed and the other movable horizontally transverse to the pass line of the mill, a pair of d...
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JPS6116528B2 |
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