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JP3191461B2 |
PURPOSE: To reduce frictional resistance between bed plates and a housing, to prevent the vibration of the floor surface and to absorb the expansion of a housing due to the thermal effect by inserting rollers between the bed plates and t...
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JP3189919B2 |
PURPOSE: To restram buckling at the front and rear ends of a slab by equipping a pair of upper and lower main holding rolls in the center of the slab width and plural upper and lower holding rolls at either an inlet side or an outlet sid...
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JP3187697B2 |
To eliminate the difference in level of a welding at the inlet side of a pickling line and enable the smooth treatment without causing the excess of a coil by specifying the sheet thickness of the welded part at the inlet side of the pic...
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JP3185334B2 |
PURPOSE: To easily joint hot steels in a short period during traveling by sliding the other joining face for one joining face to give frictional force to both joining faces. CONSTITUTION: The hot steels 2 and 3 of a hot line 1 are joined...
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JP2001179301A |
To provide a method and an apparatus for centering hot slab in the width pressing equipment which carries out draft with the width pressing, centering the hot slab at the side guides of the inlet side and the exit side. The centerline is...
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JP3182022B2 |
PURPOSE: To provide a device of simple construction for rolling-down a metallic sheet width capable of preventing the plate camber of the metallic sheet generated at the time of rolling-down of the width and deforming the metallic sheet ...
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JP3182820B2 |
PURPOSE: To lower the extracting temp. from a heating furnace and to reduce bend of material by constituting a part of roughing mill group of a specified number of reversible 2-high mill and making the distance between mutual mills a spe...
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JP2001179334A |
To enable an exact connection of a material making a succeeding material exactly to catch up a leading material at the initial stage of continuous rolling. The hot rolling equipment comprises roughing mills r3, r4 that conduct rough roll...
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JP3179237B2 |
PURPOSE: To provide a method and device for edging a metallic sheet without generating buckling even when the metallic sheet whose thickness is small as compared to the width is edged at heavy rolling reduction. CONSTITUTION: In the meth...
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JP3179709B2 |
To secure a precise pressing quantity at the time of joining metallic slabs so as to avoid the breakage of a plate by obtaining a deforming quantity in a joining device and/or a deforming quantity in a pressing direction of the metallic ...
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JP3179676B2 |
PURPOSE: To dissolve deficient temp.-rising in end part regions in width by heating a slab by generating alternating field which penetrates the slab in the thickness direction in the end part regions of the slab and, further generating t...
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JP3179236B2 |
PURPOSE: To provide a metallic sheet edging device without generating buckling even when a metallic sheet whose thickness is small as compared to the width is edged at heavy rolling reduction. CONSTITUTION: The metallic sheet edging devi...
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JP3176446B2 |
PURPOSE: To provide such a method and device for manufacturing a wire rod that buckling is hard to be caused when a composite wire rod which is rolled with rolling rolls runs into between slit rolls and being excellent in the productivit...
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JP3176999B2 |
PURPOSE: To provide a method and device for rolling a flat bar with good shape accuracy even when the number of rolling mills is plural. CONSTITUTION: A 1st to 3rd rolling rolls 20, 21, 22 independently capable of switching drive in forw...
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JP3178544B2 |
PURPOSE: To improve the quality by forming width while compressive stress is added in the feeding direction of a slab with a flying width press and sticking porous shrinkage cavity or the like in the interior of a slab by pressure. CONST...
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JP2001157909A |
To solve troubles that, when a wide stock is cropped, the cropping length in the width direction is increased, a crop is hooked or bridged in a crop shear or in a crop bag to cause the blocking.Circumferential cutting blades 11 and 12 ar...
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JP3175920B2 |
To decrease the width of seam which is represented by a distance from an edge to the seam in a hot rolled stainless steel strip and to reduce trimming allowance. A slab is made by continuously casting stainless steel and, after heating i...
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JP2001150018A |
To provide an effective descaling method for a billet preventing the formation of red scales.In the descaling method for a billet extracted from a furnace before a hot rolling, the billet extracted from the furnace is pressed in the late...
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JP2001150014A |
To provide a method for crude bars for metal rolling which takes account of the fluctuation in lengthwise temperature of the crude bars of metal rolling during the process of metal rolling for finishing in order to reducer dispersion in ...
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JP2001150004A |
To provide an edge mirror causing no winkle due to buckling in a steel sheet even in the case where it is applied in particular to the thin steel plate.The edge mirror for a steel plate is provided with a cutting head 37 provided with a ...
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JP2001137911A |
To provide a joining device of hot steel materials, by which the slipping of clamping in an interpose pressing and pushing pressing process to joining parts is prevented and at the same time, the load reducing phenomenon at the rolling p...
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JP2001137906A |
To provide a break detecting method for taking a proper counterplan by detecting the generation of break in a joined part promptly in endless rolling. By measuring the electric currents of driving motors for a pinch roll and a coiling ma...
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JP2001137908A |
To prevent the splitting at the tip part of a high sulfur free-cutting stainless steel when the hot-rolling is executed. The rolling is temporarily stopped after completing the rough- rolling, and the hot-rolling workability at the porti...
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JP3169331B2 |
To join billets at a high speed and obtain a high joining strength without using a large capacity screw-down device. In the method for joining billets 1, 2 in which the rear end of a preceding billet 1 is abutted on the tip end of a succ...
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JP3165331B2 |
PURPOSE: To suppress the generation of a low temperature part at an end part by determining the advancement of heating equipment using the speed signal of a connected slab of different width, the detected signal of the connection points,...
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JP3164339B2 |
PURPOSE: To prevent the breaking and catching accident with side guides in the rolling of a joined material from being happened. CONSTITUTION: At the time of executing endless hot rolling, by tracking a joined point, not executing edging...
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JP2001113301A |
To provide a rough rolling method of a bar steel whose rolling crack at the inner and the outer parts is hardly generated by using flat rolls, even when a continuously cast billet is directly fed into a rolling line without cooling and c...
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JP2001105025A |
To enable an accurate control, adjustment and measurement in rolling work by removing disturbance stress which is inevitably generated when a belt-like body (plate-like body) having uneven thickness is rolled and measuring accurate tensi...
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JP2001105006A |
To provide a method for producing a thick steel plate, with which the operational trouble and the occurrence of defective quality, such as breaking, caused by defective shape, such as center buckling, edge wave, warping, are prevented, a...
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JP2001105004A |
To provide a heating method of a joined steel plate, with which a crack developed at the joined part and this near part of the steel plate during hot-rolling can be prevented and such a merit as the improvement of yield can be given in t...
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JP3156557B2 |
To provide a billet feed mechanism for continuous rolling in which a number of support rolls is minimized as a whole and a support roll between a welder and grinder is eliminated. A mechanism gas flying welder 4, which is arranged with f...
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JP2001096388A |
To provide a method and an equipment of clamping for joining crude bars with a gap within the preset gaps or preferably the same gap as the preset gap by creating a gap in the direction of the width of crude bars between the end part of ...
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JP2001079631A |
To provide a thickness reducing method and device by which the amount of the vertical motion of a material to be formed is reduced by providing die pairs tandem in the conveying direction of the material to be formed, decreasing movable ...
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JP2001079605A |
To eliminate the generation of projecting part in the inner turn or the outer turn of a coil in the case that operation for coiling into separate coils having different widths is executed by cutting a strip on the inlet side of coilers b...
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JP3149779B2 |
To join the hot bar steel in short time while suppressing burr by sliding/fitting the rear end part of preceding hot bar steel the tip part of succeeding hot bar steel and joining/rolling the fitted part with applying shear force. The re...
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JP2001071013A |
To avoid the deviation from a target thickness and/or a target length of respective strip sections at a prescribed final temp. by conducting compensation for a temp. effect acting to the metal strip in rolling. Roll gap adjustment is con...
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JP2001071014A |
To achieve the improvement of the yield of products, the prevention of the occurrence of equipment trouble, securement of the safety of workers and also to automate the preparatory work for connecting the end parts of the steel strips by...
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JP3148658B2 |
To provide a device which can discriminate the acceptance/rejection of a butt weld part between the facing end sections of preceding and succeeding steel strips and the cause of abnormality. The management of facility is made easier and ...
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JP3141926B2 |
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JP3139953B2 |
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JP3139932B2 |
PURPOSE: To provide a laser beam machine which has a small fluctuation of a beam spot diameter in a machining point even if the machining head is moved for a long distance and which has a simple structure with suitability to use in an on...
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JP2001047101A |
To provide a method and rolling equipment for manufacturing the small quantities of wires, bars and also tubes a year by an economical method. As the method, the rolling of the wires and bars is executed on one side, the rolling of seaml...
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JP2001047131A |
To prevent the generation of indentation by scale by arranging a plurality of nozzles for jetting air at a prescribed inclined angle toward a material to be straightened between adjacent upper straightening rolls and attaching the upper ...
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JP2001047107A |
To prevent melt down of molten metal from an edge part at the time of joining the width edge parts of rough bars by welding by making welding speed in an early stage after starting welding by laser or arc faster than the welding speed at...
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JP2001038406A |
To improve stability of a mechanism with a width reducing press of a simple structure. One crankshaft 2 has eccentric portions in two directions, and when the crankshaft 2 rotates, members linked to the eccentric portions in two directio...
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JP2001038405A |
To accurately and securely perform relative positioning between the leading end of a continuous billet and the yoke of a welder so as to weld the leading end of the billet coming out of a heating furnace to the trailing end of the contin...
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JP3134669B2 |
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JP2001038569A |
To shorten the length of crop as much as possible. A crop disposing device is operated to remove crop C, generated when a pipe P is cut to given lengths, from the running line of the pipe P. In this case, this disposing device comprises ...
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JP3131965B2 |
To prevent the degradation in the quality of coil at the time of press working for edging a hot slab and also to suppress the reduction in the life of a press die caused by temp. rising. In the cooling method of the press die for edging ...
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JP2001025802A |
To provide a discontinuous method the cost of a plant for which is lower than that of a continuous method for rolling plural billets.This is a method for rolling the plural billets which are fed from a billet heating furnace 10 arranged ...
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