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1. 发明专利

JPH0538501A ROLLING METHOD FOR SIZING ROUND STEEL BAR 失效
公开(公告)号：JPH0538501A
公开(公告)日：1993-02-19
申请号：JP19196191
申请日：1991-07-31
申请人： KAWASAKI STEEL CO
发明人： HAGIWARA HIROSHI , TAKEDA SATORU , NAKAMURA HIROYUKI , KINDO HIDENORI
IPC分类号： B21B1/16 , B21B27/02 , B21B31/20
摘要： PURPOSE:To provide a rolling method for sizing capable of obtaining a wide range of a product diameter only by adjusting a roll gap. CONSTITUTION:A pass for sizing rolling is installed to shape a stock with a section shaped nearly in a circular shape into a prescribed product diameter by a line of not-shown rolling mills on the upstream side. The pass for sizing rolling is constituted of two passes of two four-rolls mills 1, 2. The four-rolls mill 1 for the 1st pass is provided with two sets of calibers 1a, 1b arranged on lines of vertical and horizontal directions respectively to set the rolling down direction to the vertical and horizontal directions respectively. The four- rolls mill 2 for the 2nd pass is provided with two sets of calibers 2a, 2b arranged on lines inclined at 45 degrees to the horizontal direction respectively.

2. 发明专利

JP2002103010A METHOD FOR PRODUCING CAST BILLET HAVING GOOD MACHINABILITY IN CENTER PART 失效
公开(公告)号：JP2002103010A
公开(公告)日：2002-04-09
申请号：JP2000303408
申请日：2000-10-03
申请人： KAWASAKI STEEL CO
发明人： HAGIWARA HIROSHI
IPC分类号： B22D11/12 , B22D11/11 , B22D11/16 , C21D9/00
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a cast billet for blank of a wire rod and a bar steel having good machinability in the center part. SOLUTION: The cast billet satisfying the range of 1.5-5.0 in a center segregation ratio of S in the continuous casting is cast, and successively, the obtained cast billet is diffusion-annealed, thus the center segregation ratio of C is controlled to 1-1.2.

3. 发明专利

JPH0663601A METHOD FOR SIZING AND ROLLING ROUND STEEL BAR 失效
公开(公告)号：JPH0663601A
公开(公告)日：1994-03-08
申请号：JP22006592
申请日：1992-08-19
申请人： KAWASAKI STEEL CO
发明人： TAKEDA SATORU , KINDO HIDENORI , HAGIWARA HIROSHI
IPC分类号： B21B1/16 , B21B1/18 , B21B13/12
摘要： PURPOSE:To expand the range that can be sized with the same roll while holding high dimensional accuracy due to four rolls in a method for sizing and rolling a round steel bar with the four-roll rolling mill. CONSTITUTION:Each roll pair of the four-roll rolling mill 1 on the upstream side of two four-roll rolling mills 1, 2 which are arranged in series on the pass line P is arranged as follows. That is, the distance L between a 1st reference line O1 based on the center line of a roll 1A (1B) and a second reference line O2 based on a line with which mutual centers of rolls 1C, 1D are connected is held five times the projected contact length of the roll pair 1C, 1D on the upstream side.

4. 发明专利

JPH09150210A METHOD FOR CONTROLLING SPEED OF ROLLING MILL IN TANDEM ROLLING 失效
公开(公告)号：JPH09150210A
公开(公告)日：1997-06-10
申请号：JP30864295
申请日：1995-11-28
申请人： KAWASAKI STEEL CO
发明人： HAGIWARA HIROSHI
IPC分类号： F16D25/0638 , B21B35/14 , B21B37/00 , B21B37/46
摘要： PROBLEM TO BE SOLVED: To make the best use of advantages of low cost and space saving in a common driving system and a block mill system and individually and independently execute speed control. SOLUTION: At the time of adding a vertical roll 4 and a horizontal roll 5 one by one to a block mill 1 which is driven with one motor, by incorporating a coupler of a type making use of frictional force in the shafts 7a, 7b of a speed accelerator 7 and executing speed control, the dimensional accuracy of products comparable to an individual driving system rolling mill is attained.

5. 发明专利

JPH11271047A MEASURING APPARATUS FOR BEND AMOUNT OF CIRCULAR SECTION MATERIAL 失效
公开(公告)号：JPH11271047A
公开(公告)日：1999-10-05
申请号：JP9240098
申请日：1998-03-20
申请人： KAWASAKI STEEL CO
发明人： HAGIWARA HIROSHI
IPC分类号： G01B21/20
摘要： PROBLEM TO BE SOLVED: To obtain a measuring apparatus by which the bend amount of a circular section material can be measured in a noncontact manner and without forming a specially long section on a conveyance line by a method wherein two one-dimensional range finders are installed on the vertical face which is parallel to a rail and the bend mount of the circular section material is computed on the basis of the vertical distance, up to the circular section material from the range finders, which is measured when the circular section material is passed directly on the range finders and on the basis of an equipment factor value. SOLUTION: A one-dimensional range finder 11 and a one-dimensional range finder 12 are arranged on the vertical face which is parallel to a pair of rails so as to be separated by about 1/2 of the diameter of a circular section material 3 in its conveyance direction. When the circular section material 3 is rolled directly on the one-dimensional range finder 11 on the upstream side, the vertical distance up to the lowermost end part of the circular section material 3 from the range finder 11 is measured, and a measured value m+x is obtained. In addition, when the circular section material 3 is rolled directly on the one- dimensional range finder 12 on the downstream side, the vertical distance up to the lowermost end part of the circular section material 3 from the range finder 12 is measured, and a measured value n+y is obtained. (m) and (n) are known as equipment specifications, and (x) and (y) can be obtained by a calculation. When the measured values are input to a computing device, the bend amount of the circular section material 3 can be obtained.

6. 发明专利

JPH1110441A CUTTING METHOD FOR LONG MATERIAL 失效
公开(公告)号：JPH1110441A
公开(公告)日：1999-01-19
申请号：JP16978997
申请日：1997-06-26
申请人： KAWASAKI STEEL CO
发明人： HAGIWARA HIROSHI
IPC分类号： B23D36/00
摘要： PROBLEM TO BE SOLVED: To enable cutting with the optimum yield by determining the combination of plural long materials to be continuously arranged and cut at the same time in such a manner as to minimize the total of cut-off amounts of all long materials of a suitably set long material group and a second long material group arranged immediately after the above group. SOLUTION: In cutting two groups in which the next group is added to each one group of combination of raw materials to be cut, by using the order of arranging rolled long materials and the stretching length thereof, a cutting pattern and combination are calculated to minimize the cut-off amount, and sequentially the group is determined one by one from the beginning of the rolling order. At the time of determining the second group, the result of calculation on the second group at the time of determining the first group is disregarded, and independently the calculation is performed to minimize the cut-off amounts of the second group with the third group. Thus, it is possible to carry out the calculation for a cutting method which is on-line, has small load and has the optimum yield.

7. 发明专利

JPH06106217A ROLLING METHOD WITH GROOVED ROLL 失效
公开(公告)号：JPH06106217A
公开(公告)日：1994-04-19
申请号：JP28223692
申请日：1992-09-29
申请人： KAWASAKI STEEL CO
发明人： HAGIWARA HIROSHI
IPC分类号： B21B31/18 , B21C51/00
摘要： PURPOSE:To prevent the occurrence of defects in shape and dimension of product due to thrust deviation of roll, entry irregularity of material on the inlet side, uneven wear of roll, non-uniformity of deformation resistance in the cross section of material, or the like in caliber rolling. CONSTITUTION:In the rolling method with a grooved roll 11, load which acts in the axial direction of the roll 11 is continuously measured with a load sensor 21 and the position of the roll 11 is adjusted with a roll position adjusting device 22 so that load approaches the load at idling time.

8. 发明专利

JPH05208202A 4-ROLL TYPE ROLLING MILL 失效
公开(公告)号：JPH05208202A
公开(公告)日：1993-08-20
申请号：JP30725692
申请日：1992-11-17
申请人： KAWASAKI STEEL CO , KOTOBUKI SANGYO
发明人： TAKEDA SATORU , KINDO HIDENORI , HAGIWARA HIROSHI , NAKAMURA HIROYUKI , YOSHIZAWA SADAO , NAKAMURA DAN , SUZUKI TAKAYA
IPC分类号： B21B13/10 , B21B35/00
摘要： PURPOSE:To provide a 4-roll type rolling mill of which the structure is simplified and also which is provided with good workability of roll change and maintainability. CONSTITUTION:Two rolls 1, 2 are arranged by opposing their grooves 1a, 2a vertically and other two rolls 3, 4 are arranged by opposing their grooves 3a, 4a horizontally. The shafts 1b, 2b of the two rolls 1, 2 which are vertically opposed to each other are respectively connected to spindles 5a, 5b and those two spindles 5a, 5b are respectively connected to pinion gears 9a, 9b. Those two pinion gears 9a, 9b are engaged with each other and the shaft of a driving motor 7 is fixed to one pinion gear 9b of them. A material to be rolled is passed while being rolled by rolling torques of two upper and lower rolls 1, 2 and rolling force from four rolls 1-4.

9. 发明专利

JP2003147487A STEEL FOR FORCED COLD WORKING AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：JP2003147487A
公开(公告)日：2003-05-21
申请号：JP2001340264
申请日：2001-11-06
申请人： KAWASAKI STEEL CO
发明人： MATSUZAKI AKIHIRO , OMORI YASUHIRO , KAWABUCHI MASANOBU , HAGIWARA HIROSHI
IPC分类号： C21D8/06 , C22C38/00 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide steel for forced cold working, which has excellent cold workability on forced cold working at a working ratio of >=80% without performing process annealing. SOLUTION: A steel stock having a composition containing =50% in the temperature range of 800 deg.C to an Ar1 transformation point. After the hot working, air cooling is performed thereto, so that the steel having a structure consisting of a ferritic phase having a mean ferritic grain diameter of

10. 发明专利

JP2589028B2 失效
公开(公告)号：JP2589028B2
公开(公告)日：1997-03-12
申请号：JP22006592
申请日：1992-08-19
申请人： KAWASAKI STEEL CO
发明人： TAKEDA SATORU , KINDO HIDENORI , HAGIWARA HIROSHI
IPC分类号： B21B1/16 , B21B1/18 , B21B13/12

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