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1.发明专利
公开(公告)号：JPH1128504A
公开(公告)日：1999-02-02
申请号：JP18261197
申请日：1997-07-08
Applicant: SUMITOMO METAL IND
Inventor： KUBOKI TAKASHI , KURODA KOICHI , AKIYAMA MASAYOSHI , YAMADA MASAYUKI
Abstract: PROBLEM TO BE SOLVED: To widen a size free zone, to make the finish cross section shape about complete round even though the rolling reduction is varied and to reduce the difference of deviated diameter by mutually arranging with an inclination respective roll axes of a pair of rolling roll in a two-roll rolling mill in the inverse direction or the same direction to the advancing direction of the stock to be rolled to execute finish rolling. SOLUTION: The upstream side rolling mill Sn+1 of the last two two-roll rolling mills in a finishing mill group 6 is provided with the reduction regulating mechanism of a pair of rolling rolls 1, and the distance between the roll groove bottoms of the rolling mill Sn+1 is set so as to get closer to the objective finish diameter. The downstream side two-roll rolling mill Sn+2 is provided with the reduction regulating mechanism of a pair of the rolling rolls 1 and provided with the mechanism arranging with an inclination respective roll axes of the roll 1 to the advancing direction of the stock 2 to be rolled. Therefore, the practical size free rolling having the finish cross section shape of about the complete round, the small difference of deviated diameter and moreover the wide size free zone is executed with the two-roll rolling mill.
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公开(公告)号：JPH09239449A
公开(公告)日：1997-09-16
申请号：JP5049796
申请日：1996-03-07
Applicant: SUMITOMO METAL IND
Inventor： KUBOKI TAKASHI , AISAKA SHINICHIRO , FURUKATA MUNEKATSU
Abstract: PROBLEM TO BE SOLVED: To efficiently execute cold bending with an uniform bending radius over the whole circumference of bending part by setting a caliber roll at the position capable of obtaining the optimum off-set value at the bending start time and specifying the ratio of the turning velocity of a metal tube to the circumferential velocity of the caliber roll. SOLUTION: The optimum off-set value LR reduced in the variation of the radius of curvature is previously obtained, and a caliber roll most adacent to a clamp is set at the position capable of obtaining the optimum off-set value at the beginning start time. The ratio (the circumference velocity ratio η) shown by the expression of the turning velocity of metal tube R.Q and the circumference velocity of the caliber roll γe.ω is set
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公开(公告)号：JPH06126733A
公开(公告)日：1994-05-10
申请号：JP27749092
申请日：1992-10-15
Applicant: SUMITOMO METAL IND
Inventor： KUBOKI TAKASHI
Abstract: PURPOSE:To improve the durability of a grooved roller by adjusting the temperature of whetting liquid to be supplied to a wire array on the side where a running wire array cuts into an object to be cut independently of the temperature of whetting liquid to be supplied to a wire array on the side where it comes out of the object, and supplying the whetting liquid. CONSTITUTION:A single piece of wire 2 which acts as a linear blade is wound around a groove carved out at a specified interval in the longitudinal direction of grooved rollers 1, 1, 1 retained in freely rotatable manner on the outer periphery of said grooved rollers 1, 1, 1 to form a wire array 3 of wires arranged at a specified interval. The wire array 3 is allowed to run in a single direction by rotating either of the grooved rollers 1, 1, 1. In this case, whetting liquid 7 is supplied to the wire array 3 from a whetting liquid feeder pipe 6a, and a whetting liquid 7, entrained by travelling of the wire array 3, is supplied to an area between a work 5 and the wire array 3. Further, the work 5 is pressed by the wire array 3 by allowing a work lift table 4 to ascend gradually, and is cut to sliced pieces by abrasion action. Thus it is possible to prevent the cutting accuracy from being deteriorated.
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公开(公告)号：JPH04152060A
公开(公告)日：1992-05-26
申请号：JP27199190
申请日：1990-10-09
Applicant: SUMITOMO METAL IND
Inventor： KOJIMA MASAYASU , KUBOKI TAKASHI , YAMADA GORO
Abstract: PURPOSE:To reduce the wire cost and to stabilize the cutting accuracy and cutting efficiency, by enlarging the diameter at both end sides of a resin made sleeve on which the grooves in the same depth are engraved more than the diameter of a center part, and forming the shape that the wire winding radius of curvature becomes almost uniform in the roll axial direction with a thermal expansion. CONSTITUTION:A grooved roller 20 is made in a hourglass shape larger than the outer diameter Db of a center part 21b at the outer diameter Da of both ends 21a a resin made sleeve, and is engraved with groove 11-1 in the same width (g) on the resin made sleeve 21, both ands 21a and center 21b of the sleeve are manufactured so that wire winding radius of the groove 11-1 becomes uniform in the roll axial direction, in the state of the grooved roller 20 under cutting being subjected to temperature rising. Because of its becoming in the structure that the wire winding radius after the thermal expansion of the sleeve becomes uniform, the disconnection generation rate of the wire caused by the thermal expansion of sleeve under cutting becomes extremely low, and not only the operation rate of wire saw can drastically be improved but also the loss of a work due to disconnection can drastically by reduced.
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公开(公告)号：JP2004216422A
公开(公告)日：2004-08-05
申请号：JP2003006183
申请日：2003-01-14
Applicant: Sumitomo Metal Ind Ltd , 住友金属工業株式会社
Inventor： KUBOKI TAKASHI , TACHIBANA ISAO
IPC: B21B1/02
Abstract: PROBLEM TO BE SOLVED: To provide a bloom rolling method for a continuously-cast casting bloom capable of obtaining a steel bloom having superior internal quality with firmly pressed porosity and superior pass rates for ultrasonic flaw detecting.
SOLUTION: A continuous casting method for special liquid steel satisfies the following draft r at % on the casting bloom which has a sectioned square with 330 mm or more on a side or a rectangular shape having an equivalent sectioned shape with the square and which is just continuously-cast at surface temperature of 700°C or more after completing solidification. The draft (r) satisfies 25.5≤r×(D
n /h
ni )
0.07 ≤31.0 for at least each rolling pass of a thicknesswise direction and a widthwise direction, and satisfies r×(D
n /h
ni )
0.07 ≤31.0 for all rolling passes. Here, r={1-(h
no /h
ni )}×100, D
n is a diameter (mm) of a roll at n-th number of rolling pass, h
ni is thickness (mm) of a rolled bloom before nth number of rolling pass and h
no is thickness (mm) of a rolled bloom after n-th number of rolling pass. After heating the continuously-cast casting bloom at surface temperature of 1100 °C or upper and at temperature difference of 200°C or less between the surface of the casting bloom and inside the casting bloom, bloom rolling is applicable to the casting bloom with the above conditions while the surface temperature of the casting bloom is kept at 700°C or upper before the first rolling.
COPYRIGHT: (C)2004,JPO&NCIPI-
Patent Agency Ranking
公开(公告)号：JP2000288607A
公开(公告)日：2000-10-17
申请号：JP9255599
申请日：1999-03-31
Applicant: SUMITOMO METAL IND
Inventor： KUBOKI TAKASHI , KURODA KOICHI , KAWAKAMI KOICHIRO
Abstract: PROBLEM TO BE SOLVED: To widen the applicable range in sizing by forming a caliver in each roll of the three-high rolling mill at least in a second pass as a shape arranging the arc having a diameter smaller than the diameter of a billet by a specified ratio and a clearance part and rolling into a round bar steel having different product diameter. SOLUTION: To the billet rolled to almost round cross section, the sizing rolling of the round bar steel is executed with 2 sets of the three-high rolling mill mutually shifting 60 deg. angle in the rolling reduction direction. The caliver in each roll of the three-high rolling mill at least of the second pass, is formed as the shape having the arc of diameter smaller than the diameter of the billet by 1-21% and the suitable clearance part. In the case of setting the diameter (dC) of the arc 1-2 at the groove bottom part of the caliver in the second pass to be smaller than the diameter (dO) of the billet 2 by >=1%, a product having the shape shown with the slanting line in the figure, in which three size free rangers exist, is obtd. Therefore, the necessary number of rolls is reduced and further, the roll change can be saved.
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公开(公告)号：JPH05220732A
公开(公告)日：1993-08-31
申请号：JP6110292
申请日：1992-02-17
Applicant: SUMITOMO METAL IND
Inventor： KOJIMA MASAYASU , SAKATA SUEO , KUBOKI TAKASHI
Abstract: PURPOSE:To control the variation of wire channel positions due to the temperature variation generated during cutting and ensure the flatness of a wafer by using a material of small linear expansion coefficient for a part o thermal expansion in the axial direction and varying the wire channel positions. CONSTITUTION:Cylindrical holder 13, rotating shafts 16 and shafts 17 of multi- channel rollers 1, 2 and 3 constituted of sleeves with ring channels on the outer peripheries formed at the given interval, cylindrical holders 13 fitted over the sleeves, rotating shafts 16 supporting the cylinders 13 and shafts 17 fixing the rotating shafts 16 and the holders 13 in the axial direction are manufactured by the Invar or Super-Invar respectively. The movement of the sleeves with channels in the axial direction is protected by preventing the thermal deformation generated by the temperature rise, and as a result, twisting and bending of the cut channels are eliminated to ensure the flatness of a product wafer.
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公开(公告)号：JPH05169434A
公开(公告)日：1993-07-09
申请号：JP35457691
申请日：1991-12-19
Applicant: SUMITOMO METAL IND
Inventor： KOJIMA MASAYASU , SAKATA SUEO , KUBOKI TAKASHI
IPC: B24B27/06 , B28D1/22 , B28D5/04 , H01L21/304
Abstract: PURPOSE:To provide a cutting method capable of manufacturing a ultrahard material which is represented by high-purity alumina highly efficiently, precisely and at a low cost. CONSTITUTION:A work 10 is raised from directly below a wire row 5 while running unidirectionally the wire row 5 stretched at fixed pitches. Cutting is performed by supplying an abrasive liquid containing a boron carbide abrasive grain to a contacting part between the wire row 5 and work 10.
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公开(公告)号：JP2002059214A
公开(公告)日：2002-02-26
申请号：JP2000244237
申请日：2000-08-11
Applicant: SUMITOMO METAL IND
Inventor： WATABE SATORU , HARUHATA YOSHIFUMI , KUBOKI TAKASHI , NEISHI YUTAKA
Abstract: PROBLEM TO BE SOLVED: To provide an extruding method by which bends generated on a wire rod, a steel bar and a steel wire are reduced. SOLUTION: Using a hole die having the half angle θ( deg.) of an outlet-side taper angle which satisfies the formula 1 and also the ratio of the length L (mm) of the outlet-side tapered part to the length E (mm) of the bearing part which satisfies the formula 2, extrusion is performed at a working ratio which satisfies the formula 3. 0.02
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公开(公告)号：JP2000301202A
公开(公告)日：2000-10-31
申请号：JP10547499
申请日：1999-04-13
Applicant: SUMITOMO METAL IND
Inventor： KUBOKI TAKASHI , KURODA KOICHI , IKEBE KIHACHI , HONDA EIJI , TASHIRO RYUJI
Abstract: PROBLEM TO BE SOLVED: To separately manufacture products having plural sizes to one size of inlet- side dimensions and to reduce the changing time of rolling rolls and number of reserved rolls by adjusting the actual reduction of area at a 1st pass within a specific range in accordance with the diameter of the target product and adjusting an interval between the guide rollers on the inlet side of a 2nd pass in accordance with the increase and decrease of the actual reduction of area. SOLUTION: With a block mill in which two-roll stands #1-#4 on the inlet side of which the guide rollers 2a-4a are continuously arranged shifting a screw-down direction at 90 deg. to each other, a round steel bar is manufactured. When the reference reduction of area of the 1st pass with the rolling rolls 1a of the stand #1 is expressed by R1B(%) and the actual reduction of area by R1=(R1B±X)(%), the actual reduction R1 of area at the 1st pass is adjusted within the range of >2 to
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