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JP4081910B2 |
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JP4074973B2 |
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JP4074866B2 |
A method and apparatus is provided for temporarily interrupting the passage of long products between upstream and downstream paths in a rolling mill (14). The products are delivered from the upstream path to a coil box (28) having a cyli...
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JP4072661B2 |
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JP4072653B2 |
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JP2008068297A |
To provide a method of manufacturing a large diameter wire rod which is high in the yield and excellent in cold forging property by effectively suppressing occurrence of scabs on the large diameter wire rod when manufacturing the large d...
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JP4062107B2 |
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JP4062178B2 |
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JP4060937B2 |
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JP4055218B2 |
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JP4050897B2 |
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JP4022795B2 |
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JP4019772B2 |
A method for manufacturing a seamless steel tube, wherein a tubing material for the seamless steel tube is produced by a hot working process from a material having less workability, such as a high Cr - high Ni - high C alloy steel includ...
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JP4016233B2 |
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JP2007301571A |
To provide a method for bloom-rolling a steel ingot, which method can stably shorten the longitudinal length of a crop to be produced at the longitudinal end portion of a produced steel billet, and can easily carry out the shearing and r...
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JP2007291470A |
To provide a method for quickly and simply joining the tail end of a preceding material with the top of a following material even when they are thin, in a recovery operation for a fractured sheet, in a continuous treatment line of a meta...
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JP4000705B2 |
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JP3995295B2 |
The reel unit has an alternative drive for one of several reels for a continuous strip which can be cut into lengths by flying shears. There is at least one driver (5,13) after the shears, with rollers which can be adjusted so that the p...
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JP3991144B2 |
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JP3991137B2 |
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JP3991128B2 |
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JP3991139B2 |
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JP3991138B2 |
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JP3991130B2 |
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JP3991140B2 |
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JP3991141B2 |
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JP3991127B2 |
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JP3993915B2 |
Operating a rolling plant incorporates one or more preliminary upsetting stands followed by a compact rolling group which is laterally offset and consists of two universal or duo stands (UG1, UG2) and an interposed upsetting stand (ZG). ...
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JP3991129B2 |
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JP3987861B2 |
In a system (10) for subdividing hot rolled product lengths being delivered from a rolling mill along a first path (X), a first switch (SW1) acts in concert with a first shear (SH1) to subdivide each product length traveling along the fi...
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JP2007245261A |
To provide a cutting method of a non-heating system suitable for preventing generation of a cross sectional crack caused by residual hydrogen in steel generated at the time of an on-line cutting of a thick steel plate for a high strength...
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JP3980739B2 |
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JP3980730B2 |
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JP2007237229A |
To provide an edging press method for a slab by which the edging press of the slab can be properly performed by securely preventing the slip of the slab when applying the edging press to the slab in a hot-rolling line. The edging press i...
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JP2007229727A |
To provide a die for edging presses with which the generation of edge flaws is prevented while preventing the slip of a slab as the die for edging presses which is used when performing the edging press of the slab on a hot rolling line. ...
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JP3975617B2 |
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JP2007222875A |
To provide a method of preventing shear crack and a shearing apparatus with which the shear crack is prevented which are suitable to a steel plate of ≥4 to <40 mm in thickness and ≥TS490 MPa. In this method, after shearing as soon as...
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JP2007210018A |
To enable a cost reduction through a long life and weight reduction/downsizing of a machine, by a decrease of reduction load. The thickness press machine 11 comprises metal dies 13 installed to pinch a slab 12 to be transferred from the ...
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JP3951410B2 |
To manufacture a steel plate at high yield without greatly changing existing equipment by using a slab of a larger unit weight and reducing scale loss and crop loss with a reversing type hot rolling mill. A coiler 7 for preventing interf...
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JP2007169672A |
To provide a method by which titanium scraps produced at both ends of a bloom or billet when forming the bloom or billet from a titanium or titanium-alloy ingot by means of hot blooming or further hot billet rolling can be recycled with ...
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JP3941699B2 |
To prevent a stock to be rolled from being touched or slid by fixed aprons and center guide rolls installed at the central area in the crosswise direction of the metal stock to be rolled of a width reducing device which reduces the width...
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JP3929147B2 |
To provide a winding apparatus by which a strip rolled to a prescribed thickness on the outlet side of a finishing mill and joined can be cut and wound by down-coilers, to manufacture product coils in the endless rolling of hot rolling j...
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JP3927536B2 |
To enhance productivity in a continuous hot rolling line of a steel strip or the like, and to suppress degradation of productivity as the speed is reduced when performing the treatment such as heating and descaling by reducing the transp...
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JP3925789B2 |
To provide a cooling method for a thick steel plate which prevents the buckling of the steel plate and destruction of equipment and produces a flat steel plate continuously and stably without C or L shaped curling. A gap between an upper...
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JP2007513775A |
The invention relates to a method of rolling a strip-shaped in-process stock, in particular a metal strip, with which, a metal strip ( 3 ) is unwound from a coil ( 2, 7 ) held on an unwinding reel ( 1, 6 ), is fed into a reversing rollin...
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JP3911264B2 |
To provide a pickling device and a pickling method which have both high quality and high productivity of the strip ( slender piece ) of a hot-rolled sheet. The pickling device train of the hot-rolled sheet is composed of an uncoiler, inl...
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JP2007508941A |
Rolling mill (1) for warm rolling of metals, especially Al, including a hot strip roll chain, (3) with a blooming roll chain (4) and a finishing roll chain (5), where roll chain (5) is a tandem roll chain in which the material for rollin...
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JP3901436B2 |
To provide a method for reducing the time for connecting crude bars preventing a drop of a temperature of the bar. A roughing mill 1, a solenoid-type induction heater 3, a connector 4 and a finishing mill 5 are disposed in such an order ...
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JP3899607B2 |
To enable normal/defective quality of a weld zone to be decided automatically and also in a short time by detecting a voltage energized at each point of time while a pair of welding electrode wheels is rotatably moved and deciding whethe...
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JP3899442B2 |
To sufficiently enable hot scarfing all four faces even to billets of an oval shape. This hot scarfer is provided with two scarfing units 12 for planes, which are respectively arranged in positions in close proximity to two opposite plan...
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