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1. 发明专利

DE69602797D1 未知
公开(公告)号：DE69602797D1
公开(公告)日：1999-07-15
申请号：DE69602797
申请日：1996-03-29
申请人： KAWASAKI STEEL CO
发明人： TAMAI YOSHIKIYO , TAKEBAYASHI KATSUHIRO , IMAE TOSHIO , NIKAIDO HIDEYUKI , ISOBE KUNIO
IPC分类号： B21B13/02 , B21B15/00 , B21B37/16 , B21B37/26 , B21B37/28 , B21B37/38
摘要： A method for continuously hot-rolling steel pieces, includes butt-joining the rear end of the preceding steel piece and the leading end of the succeeding steel piece, then finish-rolling the butt-joined steel pieces by supplying a continuous hot rolling facility provided with a plurality of stands having a bending function of a work roll. The method involves estimating the variation of the rolling force occurring during rolling the joint of the steel pieces at the non-stationary zone caused by said joint, calculating the changing bending force of the work roll during rolling the joint of the steel pieces from the estimated variation of the rolling force, and determining the pattern for changing the bending force taking account of said changing force, and rolling the joint of the steel pieces by regulating the bending force in response to said pattern over at least one stand, while tracking down the joint of the steel piece immediately after joining.

2. 发明专利

DE69625030T2 未知
公开(公告)号：DE69625030T2
公开(公告)日：2003-07-31
申请号：DE69625030
申请日：1996-01-12
申请人： KAWASAKI STEEL CO
发明人： TAKEBAYASHI KATSUHIRO , TAMAI YOSHIKIYO , IMAE TOSHIO , ISOBE KUNIO , NIKAIDO HIDEYUKI , UEMURA KOICHI
IPC分类号： B21B15/00 , B23D15/00 , B23D25/12
摘要： A continuous hot rolling method for continuously hot finish rolling steel pieces. The trailing end of a preceding steel piece and the leading end of a succeeding steel piece are cut by a drum shear which sandwiches the steel piece between its upper drum and lower drum, having cutting blades on the peripheries of the drums. The cut ends are heated to raise the temperatures thereof by high-frequency induction heating, pressed against each other to butt-join the cut ends. The joined steel pieces are then supplied to a rolling equipment. The trailing end of the preceding steel piece and the leading end of the succeeding steel piece are cut individually by two pairs of the cutting blades. One pair of the cutting blades has the obverses of the blades oriented in opposite directions in the obverse side and the reverse side of the steel piece. The other pair of cutting blades has the obverses of the blades oriented in the opposite directions relative to the former pair of cutting blades, while each steel piece is transferred to the same direction. The method according to the invention significantly reduces the displacement produced when the steel pieces are joined by applying transverse-type high-frequency induction, thereby realizing stable continuous hot rolling with no breakage of the rolled plate.

3. 发明公开

EP0782890A4 METHOD OF CONTINUOUS HOT ROLLING OF BILLET 失效
标题翻译： PROCEDURE连续热轧坯料
公开(公告)号：EP0782890A4
公开(公告)日：1999-07-14
申请号：EP96900437
申请日：1996-01-12
申请人： KAWASAKI STEEL CO
发明人： TAKEBAYASHI KATSUHIRO , TAMAI YOSHIKIYO , IMAE TOSHIO , ISOBE KUNIO , NIKAIDO HIDEYUKI , UEMURA KOICHI
IPC分类号： B21B15/00 , B23D15/00 , B23D25/12
CPC分类号： B23D15/005 , B21B15/0007 , B21B15/0085 , B23D25/12
摘要： A stable continuous hot rolling method which extremely lessens dislocation produced upon application of a high frequency induction heating of the transverse type for joining billets and eliminates plate breakage by individually cutting a rear end of a leading billet and a front end of a trailing billet by means of two pairs of cutting blades, one pair of which is arranged such that front faces of the blades are opposite in direction to each other on both sides of the billet and the other pair of which is arranged such that front faces of the blades are reversed in direction to those of the blades of the one pair, while conveying the respective billets in the same direction when the rear end of the leading billet and the front end of the trailing billet, respectively, are cut by means of drum shears which vertically interpose therebetween the rear end and the front end and are provided at outer peripheries thereon with cutting blades, and the respective ends are fed to a rolling mill to be continuously subjected to hot finished rolling after they are heated trough high frequency induction heating to be raised in temperature and pressed against each other to be joined.

4. 发明专利

DE69625030D1 未知
公开(公告)号：DE69625030D1
公开(公告)日：2003-01-09
申请号：DE69625030
申请日：1996-01-12
申请人： KAWASAKI STEEL CO
发明人： TAKEBAYASHI KATSUHIRO , TAMAI YOSHIKIYO , IMAE TOSHIO , ISOBE KUNIO , NIKAIDO HIDEYUKI , UEMURA KOICHI
IPC分类号： B21B15/00 , B23D15/00 , B23D25/12
摘要： A continuous hot rolling method for continuously hot finish rolling steel pieces. The trailing end of a preceding steel piece and the leading end of a succeeding steel piece are cut by a drum shear which sandwiches the steel piece between its upper drum and lower drum, having cutting blades on the peripheries of the drums. The cut ends are heated to raise the temperatures thereof by high-frequency induction heating, pressed against each other to butt-join the cut ends. The joined steel pieces are then supplied to a rolling equipment. The trailing end of the preceding steel piece and the leading end of the succeeding steel piece are cut individually by two pairs of the cutting blades. One pair of the cutting blades has the obverses of the blades oriented in opposite directions in the obverse side and the reverse side of the steel piece. The other pair of cutting blades has the obverses of the blades oriented in the opposite directions relative to the former pair of cutting blades, while each steel piece is transferred to the same direction. The method according to the invention significantly reduces the displacement produced when the steel pieces are joined by applying transverse-type high-frequency induction, thereby realizing stable continuous hot rolling with no breakage of the rolled plate.

5. 发明专利

DE69202306T2 未知
公开(公告)号：DE69202306T2
公开(公告)日：1995-12-21
申请号：DE69202306
申请日：1992-06-17
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO
IPC分类号： B21B17/04
摘要： A mandrel mill for rolling a tubing in a pass between a mandrel bar and a plurality of serially arranged roll stands. Each roll stand has a plurality of pairs of grooved rolls whose grooves are paired to define a part of the pass. The grooves of the rolls of a first roll stand define a hole having a circumference of not more than 1.12 times the outer circumference of a tubing at the exit of the final roll stand. The grooves of the second-stand rolls define a hole having a circumference of not more than 1.06 times that outer circumference, and those of the third-stand rolls define a hole having a circumference of not more than 1.02 times that outer circumference. Thus, the mandrel mill is capable of preventing stripping miss even when the billet is of a high-alloy steel.

6. 发明专利

CA2076402A1 MANDREL MILL FOR SEAMLESS STEEL TUBES 未知
公开(公告)号：CA2076402A1
公开(公告)日：1993-02-23
申请号：CA2076402
申请日：1992-08-19
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO , OKA HIROMU
IPC分类号： B21B17/02 , B21B17/04 , B21B27/02 , B21B37/18 , B21B37/78 , B21B25/00

7. 发明专利

CA2071428A1 MANDREL MILL CAPABLE OF PREVENTING STRIPPING MISS 未知
公开(公告)号：CA2071428A1
公开(公告)日：1992-12-22
申请号：CA2071428
申请日：1992-06-17
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO
IPC分类号： B21B17/04
摘要： A mandrel mill for rolling a tubing in a pass between a mandrel bar and a plurality of serially arranged roll stands. Each roll stand has a plurality of pairs of grooved rolls whose grooves are paired to define a part of the pass. The grooves of the rolls of a first roll stand define a hole having a circumference of not more than 1.12 times the outer circumference of a tubing at the exit of the final roll stand. The grooves of the second-stand rolls define a hole having a circumference of not more than 1.06 times that outer circumference, and those of the third-stand rolls define a hole having a circumference of not more than 1.02 times that outer circumference. Thus, the mandrel mill is capable of preventing stripping miss even when the billet is of a high-alloy steel.

8. 发明专利

DE69202306T3 未知
公开(公告)号：DE69202306T3
公开(公告)日：2001-10-31
申请号：DE69202306
申请日：1992-06-17
申请人： KAWASAKI STEEL CO
发明人： IMAE TOSHIO
IPC分类号： B21B17/04
摘要： A mandrel mill for rolling a tubing in a pass between a mandrel bar and a plurality of serially arranged roll stands. Each roll stand has a plurality of pairs of grooved rolls whose grooves are paired to define a part of the pass. The grooves of the rolls of a first roll stand define a hole having a circumference of not more than 1.12 times the outer circumference of a tubing at the exit of the final roll stand. The grooves of the second-stand rolls define a hole having a circumference of not more than 1.06 times that outer circumference, and those of the third-stand rolls define a hole having a circumference of not more than 1.02 times that outer circumference. Thus, the mandrel mill is capable of preventing stripping miss even when the billet is of a high-alloy steel.

9. 发明专利

CA2199872C METHOD OF CONTINUOUSLY HOT ROLLING STEEL PIECES 未知
公开(公告)号：CA2199872C
公开(公告)日：2000-04-18
申请号：CA2199872
申请日：1996-01-12
申请人： KAWASAKI STEEL CO
发明人： TAMAI YOSHIKIYO , IMAE TOSHIO , UEMURA KOICHI , TAKEBAYASHI KATSUHIRO , ISOBE KUNIO , NIKAIDO HIDEYUKI
IPC分类号： B21B15/00 , B23D15/00 , B23D25/12
摘要： A stable continuous hot rolling method which extremely lessens dislocation produced upon application of a high frequency induction heating of the transverse type for joining billets and eliminates plate breakage by individually cutting a rear end of a leading billet and a front end of a trailing billet by means of two pairs of cutting blades, one pair of which is arranged such that front faces of the blades are opposite in direction to each other on both sides of the billet and the other pair of which is arranged such that front faces of the blades are reversed in direction to those of the blades of the one pair, while conveying the respective billets in the same direction when the rear end of the leading billet and the front end of the trailing billet, respectively, are cut by means of drum shears which vertically interpose therebetween the rear end and the front end and are provided at outer peripheries thereon with cutting blades, and the respective ends are fed to a rolling mill to be continuously subjected to hot finished rolling after they are heated trough high frequency induction heating to be raised in temperature and pressed against each other to be joined.

10. 发明专利

DE69602797T2 未知
公开(公告)号：DE69602797T2
公开(公告)日：1999-09-30
申请号：DE69602797
申请日：1996-03-29
申请人： KAWASAKI STEEL CO
发明人： TAMAI YOSHIKIYO , TAKEBAYASHI KATSUHIRO , IMAE TOSHIO , NIKAIDO HIDEYUKI , ISOBE KUNIO
IPC分类号： B21B13/02 , B21B15/00 , B21B37/16 , B21B37/26 , B21B37/28 , B21B37/38
摘要： A method for continuously hot-rolling steel pieces, includes butt-joining the rear end of the preceding steel piece and the leading end of the succeeding steel piece, then finish-rolling the butt-joined steel pieces by supplying a continuous hot rolling facility provided with a plurality of stands having a bending function of a work roll. The method involves estimating the variation of the rolling force occurring during rolling the joint of the steel pieces at the non-stationary zone caused by said joint, calculating the changing bending force of the work roll during rolling the joint of the steel pieces from the estimated variation of the rolling force, and determining the pattern for changing the bending force taking account of said changing force, and rolling the joint of the steel pieces by regulating the bending force in response to said pattern over at least one stand, while tracking down the joint of the steel piece immediately after joining.

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