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JPS60191609A |
PURPOSE: To suppress generation of a thickness deviation and to improve the quality of a pipe by maintaining the angles between the opposed surfaces of the outlet surface of inclined rolls and the reeling part of a plug or the tangent th...
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JPS6043207B2 |
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JPS6043208B2 |
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JPS60187415A |
PURPOSE: To detect a plugless rolling condition in a piercer by fetching the image of the shell of a pipe stock delivered from a piercer into a sensor and computing a measuring value corresponding to the outer diameter of pipe stock for ...
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JPS60187407A |
The adjustment provides for three degrees of freedom, in which in addition to varying the distance of the rolls from the rolling axis an adjustment axis is provided generally parallel to the rolling axis and about which the roll mount ca...
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JPS6030964Y2 |
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JPS60136804U |
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JPS60170514A |
PURPOSE: To prevent the front-end warp of a steel pipe by making the ratio of rolling torque between both rolls approximately uniform at a numerical value within a specific range and making the center height of a pipe stock at the inlet ...
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JPS6038203B2 |
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JPS6038202B2 |
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JPS6036324B2 |
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JPS6036326B2 |
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JPS6036325B2 |
PURPOSE:To process the outer and inner surfaces of a long-sized metallic pipe into the prescribed shapes by advancing the pipe with the aid of the rotating force of rolling rolls, by revolving and rotating the rolling rolls which press t...
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JPS60154811A |
PURPOSE: To make the cut off quantity of crop to be almost zero by rolling only pipe ends, having large wall thickness each, after stretch reducing a pipe stock, and finishing the pipe ends into the prescribed outer diameter and wall thi...
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JPS6035203B2 |
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JPS6035204B2 |
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JPS6035205B2 |
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JPS6035206B2 |
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JPS6025282Y2 |
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JPS6025281Y2 |
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JPS60137511A |
PURPOSE: To provide wear resistance, erosion resistance, and seizure resistance, etc. to a mandrel and to improve its service life by providing a ceramic tip part to a body part of the mandrel made of low-alloy steel. CONSTITUTION: A tip...
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JPS60137508A |
PURPOSE: To form-roll long columnar bodies having different dimensions in a wide range by deciding the eccentric quantity of the center of a ring roll caliber with respect to the axial center of a gear by the combination of the key groov...
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JPS60137516A |
PURPOSE: To prevent abnormal thickness and to reduce dispersion in length or thickness of tube stocks by learning and controlling the amount of advance of a piercing plug basing on the actual thickness or correction term when rolling the...
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JPS60137509A |
PURPOSE: To reduce the twist of a pipe and to prevent the pipe from causing ruggedness, crease, and flaw, etc. by relatively moving a mandrel in the reverse direction to the relative movement of an annular tool with respect to the pipe. ...
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JPS60103504U |
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JPS60127015A |
PURPOSE: To roll a tube for which allowable limit of inner diameter is designated at high accuracy by determining objective outer diameter at the time of rolling from thickness after sizer rolling estimated from actual result of size of ...
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JPS60127008A |
PURPOSE: To improve remarkably bottom-surface wearing of a plug by providing a hard facing with the use of a wear-resisting metal to the mandrel bar contacting part of the bottom surface of a plug of reeling mill. CONSTITUTION: The conta...
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JPS60124404A |
PURPOSE: To prevent the wall-thickness deviation due to eccentricity at the rear end of a hollow blank pipe and to improve the yield of a product by piercing a hole having specific dimensions and shape in the central position of the rear...
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JPS60124405A |
PURPOSE: To prevent the generation of inner-surface flaws at the front end of a hollow blank piep and to improve the yield of a product by regulating the temperature of a plug arranged at the front side of the billet transferring directi...
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JPS60118308A |
PURPOSE: To reduce the wear of shoe and to prevent a product from flaws generating in its outer surface by deviating the position of shoe-bottom at the contacting surface contacting a shell from the center line of a cross section of shoe...
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JPS60115310A |
PURPOSE: To improve remarkably the advancing speed of a material to be rolled by applying a tensile stress, within a range of the yielding stress of the material, in reducing the wall thickness of tube end by rolling. CONSTITUTION: A man...
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JPS60115309A |
PURPOSE: To make a final product accurate in dimensions and to improve its yield by providing a cooling device capable of controlling the flow rate, etc. of a cooling liquid to the front and back of an elongator and making the temperatur...
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JPS6025203B2 |
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JPS60106605A |
PURPOSE: To finish the inner surface of a blank pipe into an approximately round and to finish the pipe highly precisely in dimension by arranging rolls so that their axial directions have each a prescribed slanting angle with respect to...
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JPS6023885B2 |
The apparatus for changing the rolls (6) of a skew rolling mill comprises a roll-change carriage (14) movable along the direction of feed of material (10) being rolled. A carrier (11) is mounted on the carriage (14) and carries a plurali...
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JPS6023888B2 |
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JPS6023884B2 |
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JPS60102221A |
PURPOSE: To control thickness of a tube within allowable deviation by controlling roll opening and plug position using measured value of a thickness gauge. CONSTITUTION: Roll opening is controlled by a roll opening controlling device 4 a...
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JPS6099406A |
PURPOSE: To roll a pipe under high rolling reduction by an installation of small capacity and to press-reduce the pipe in high dimensional accuracy by moving ring rolls in the direction intersecting with a mandrel axis to reduce the wall...
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JPS6099407A |
PURPOSE: To improve the seizure resisting and wear resisting properties of a titled guide shoe by providing prescribed layers containing ceramics to the surface of guide shoe opposite to a material to be rolled which is liable to cause s...
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JPS6021002B2 |
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JPS6020083B2 |
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JPS6020082B2 |
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JPS6076204A |
(57) [Abstract] Since this gazette is application data in front of an electronic application, the data of an abstract is not recorded.
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JPS6076208A |
An apparatus for delivery and removal of mandrel rods for use with rolling mills. A plurality of rocking levers are arranged one behind the other in the direction of rolling and are pivotable into upper and lower positions. Free ends of ...
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JPS6016847B2 |
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JPS6056406A |
PURPOSE: To prevent the seizure between a billet and a guide shoe and to obtain a hollow shell having excellent quality and free from surface defects by applying a hot-rolling lubricant used for rolling tools, etc. to the guide shoe in M...
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JPS6056407A |
Hollow bodies (3) are manufactured from round ingots (6) by piercing with a mandrel (4), typically between skew rolling mill rolls (1,2). Prior to piercing, a depression (7) is formed in the end of the ingot where the mandrel (4) emerges...
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JPS6012128B2 |
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JPS6012131B2 |
PURPOSE:To advance a long sized metallic pipe and to work the outer and inner surfaces of the pipe into a prescribed shape by the rotating force of an outer- and- inner-surface working machine, by arranging said machine at the post stage...
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