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51. 发明专利

JP2006167763A Plug and cold-drawing method 有权
标题翻译：插头和冷拉方法
公开(公告)号：JP2006167763A
公开(公告)日：2006-06-29
申请号：JP2004364606
申请日：2004-12-16
申请人： Sumitomo Metal Ind Ltd , 住友金属工業株式会社
发明人： KURODA KOICHI , OKUI TATSUYA , BEPPU KENICHI
IPC分类号： B21C3/16 , B21C1/24
摘要： PROBLEM TO BE SOLVED: To provide a plug with which the decrease of wrinkles per cold drawing can be made larger without generating seizure compared with a conventional method.
SOLUTION: This plug is a plug which is inserted into a metallic tube at cold drawing and a first cylinder part, a second cylinder part and a taper part are respectively continuously formed in the middle, at one end of both ends and between the first and the second cylinder parts. The outside diameter of the first cylinder part is D1 (mm), the outside diameter of the second cylinder part is D2 (mm) larger than D1 and the taper angle of the taper part is θ (degree). The plug of this invention satisfies inequalities (1) to (3). 0.08≤Δh≤0.20 (1), 5≤θ≤25 (2), Δh≤-0.005θ+0.275 (3) and, where, Δh=(D2-D1)/2.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种塞子，与常规方法相比，可以使每个冷拉伸的皱纹减小而不产生卡塞。解决方案：该插头是在冷拔时插入到金属管中的插头，并且第一气缸部分，第二气缸部分和锥形部分分别在中间连续形成在两端的一端以及在两端第一和第二缸部分。第一圆筒部的外径为D1（mm），第二圆筒部的外径为D2（mm）大于D1，锥形部的锥角为θ（度）。本发明的塞子满足不等式（1）〜（3）。 0.08≤Δh≤0.20（1），5≤θ≤25（2），Δh≤-0.005θ+ 0.275（3），其中Δh=（D2-D1）/ 2。版权所有（C）2006，JPO＆NCIPI

52. 发明专利

JPH1157803A MANUFACTURING METHOD AND DEVICE FOR METALLIC MATERIALS WITH CIRCULAR SHAPE AT ITS CROSS SECTION 失效
公开(公告)号：JPH1157803A
公开(公告)日：1999-03-02
申请号：JP21849697
申请日：1997-08-13
申请人： SUMITOMO METAL IND
发明人： KUBOKI TAKASHI , KURODA KOICHI , AKIYAMA MASAYOSHI
IPC分类号： B21B27/02 , B21B1/16 , B21B31/16 , B21B31/20
摘要： PROBLEM TO BE SOLVED: To decrease the number of rolls to be kept and improve the operation efficiency of rolling by finish rolling a metallic material by means of arranging diagonally each axis of a pair of rolls in the direction opposite to each other, and arranging each axis of another pair of rolls diagonally in the direction opposite to each other and also in the direction opposite to the former pair of rolls. SOLUTION: After a rolled material 2 is repeatedly reduce-rolled by a front roller group 5 composed of the plural linearly arranged rollers, it is finished up to the metallic material with a circular cross section shape having a desired diameter by a four-roll roller Sn, which is the final finishing roller in a finishing roller 6. Each roll axis 4 of one 1, out of two pairs of rolls of the four-roll roller Sn is respectively arranged diagonally in the direction opposite to each other in the moving direction of the rolled material 2. Further, each roll axis 4 of another pair of the rolls 1 is respectively arranged diagonally in the direction opposite to each other in the moving direction of the rolled material 2 and also in the direction opposite to the former pair of the rolls.

53. 发明专利

JPH1128506A COLD ROLLING METHOD OF SMALL DIAMETER WIRE AND CONTINUOUS ROLLING MILL USED FOR EXECUTION OF THIS METHOD 失效
公开(公告)号：JPH1128506A
公开(公告)日：1999-02-02
申请号：JP18096397
申请日：1997-07-07
申请人： SUMITOMO METAL IND
发明人： IMAMURA YOICHI , NAKASUJI KAZUYUKI , KURODA KOICHI
IPC分类号： B21B1/18 , B21B1/16 , B21B13/10 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To prevent the frequent generation of the lowering of quality and the flaw due to seizure even in the case of cold rolling a product wire at a high speed by forming the retained bath layer of a lubricating oil between the roll stands of a continuous rolling mill and rolling the wire while cooling with the retained bath layer. SOLUTION: The lubricating oil is directly jetted and fed to the wire stock W passing through a guide tube disposed between respective roll stands 40, 40, from the feeding port 50a provided in the guide tube 50 during rolling. The lubricating oil overflowed from the guide tube 50 is retained in the space defined with front and back housings 41, 41 and a partition plate 51 to form the retained bath layer OL. Therefore, since the wire stock W under rolling is rolled in the oil bathing state between all roll stands during rolling, the cooling effect by the lubricating oil is remarkably improved. As the result, the temperature rising of both the wire stock W under rolling and four pass rolls 42a-42b due to working heat is restrained.

54. 发明专利

JPH10137803A DIAMETER REDUCING METHOD OF STAINLESS WIRE ROD 失效
公开(公告)号：JPH10137803A
公开(公告)日：1998-05-26
申请号：JP29369496
申请日：1996-11-06
申请人： SUMITOMO METAL IND
发明人： IMAMURA YOICHI , KURODA KOICHI
IPC分类号： B21B1/18 , B21B1/16 , B21B3/02 , B21B13/12
摘要： PROBLEM TO BE SOLVED: To reduce the manufacturing costs of a stainless wire rod by setting the wire rod temperature in the outlet side of a continuous rolling mill at a specified value or above in the case of cold reducing the outer diameter of a stainless steel raw wire rod with the continuous rolling mill. SOLUTION: The outer diameter of the raw wire rod SW in the ordinary temperature state made from stainless steel difficult to work, which is recoiled with a recoiling machine 1 and continuously fed through the inlet guide 2, is continuously cold rolled to reduce with the continuous rolling mill 3 and the wire rod is coiled with a coiling machine 4. At this time, the wire rod is rolled under the condition that the material temperature in the outlet side of the continuous rolling mill 3 becomes >= (Md point +50) deg.C. When the material temperature in the outlet side of the continuous rolling mill 3 is >= (Md point +50) deg.C, the higher the better. However when it becomes too high, since seizure is possibly generated between the material and a pass roll depending on a material, the upper limit is preferable kept at e.g. (Md+150) deg.C.

55. 发明专利

JPH0563241B2 失效
公开(公告)号：JPH0563241B2
公开(公告)日：1993-09-10
申请号：JP9435585
申请日：1985-04-30
申请人： SUMITOMO METAL IND
发明人： KURODA KOICHI , NAKASUJI KAZUYUKI , HAYASHI CHIHIRO
IPC分类号： B21B1/42 , B21B1/16 , B21B1/20 , B21B13/00 , B21B19/02

56. 发明专利

JPH0569041A COILING DEVICE FOR WIRE ROD 失效
公开(公告)号：JPH0569041A
公开(公告)日：1993-03-23
申请号：JP25434491
申请日：1991-09-05
申请人： SUMITOMO METAL IND , SUMITOMO HEAVY INDUSTRIES
发明人： NAKASUJI KAZUYUKI , KURODA KOICHI , IIO ITSUSHI , OCHI SHIGEHARU
IPC分类号： B21C47/02 , B65H59/36
摘要： PURPOSE:To provide the coiling device which can coil a wire rod so that its tail end runs along a coil. CONSTITUTION:In the coiling device for aligning and multilayer-coiling a wire rod (m) to a coiling reel 1 like a coil, this device is provided with a tensioner 10 in which a tension roller 12 for giving tension to the wire rod (m) coiled to the coiling reel 1 is attached to the tip, a bending roller unit 20 consisting of two pieces of bending rollers 21, 22 provided in a position in which said tension roller 12 is pressed against, in the vicinity of the peripheral surface of the coiling reel 1, and an air cylinder 13 for driving the tension roller 12 to a tension giving position for giving prescribed tension to the wire rod which is being coiled, and a bending position for pressing it against said bending roller, and by driving the tension roller 12 to the bending position immediately before coiling the tail end of the wire rod, he tail end of the wire rod (m) is bent to a shape for running along an external form of the coil.

57. 发明专利

JPH026029A MANUFACTURE OF HOLLOW SCREW 失效
公开(公告)号：JPH026029A
公开(公告)日：1990-01-10
申请号：JP15749988
申请日：1988-06-24
申请人： SUMITOMO METAL IND
发明人： KURODA KOICHI , NAKASUJI KAZUYUKI
IPC分类号： B21C1/22 , B21C3/08 , B21C37/20 , B21D15/04 , B21H3/00 , B21H3/04 , B21H5/02 , B21H7/14
摘要： PURPOSE:To manufacture a hollow screw having high dimensional accuracy with a simple manufacturing process by cold-rolling a metallic pipe with three or four rolling rolls respectively equipped with annular grooves while the pipe is inclined. CONSTITUTION:A metallic pipe 4 is cold-rolled by means of rolling rolls 1, 2, and 3 constituting one set of tilt rolling mill of three pieces provided on the rolling position of a pass line while the pipe 4 is moved in the axial direction. The rolls 1, 2, and 3 have the same conical radii alpha1 and alpha2 on both in- and out-sides and the shafts of the rolls are inclined so that the shaft ends on the same side can be faced to the same side. In addition, the shaft ends can be brought nearer and separated farther to and from the pass line side. Then plural annular grooves 10 are provided in the peripheral direction to the part of the rolls, where the distance between the outer peripheral surfaces of the rolls and the pass line are shorter than the radius of the outer peripheral surface of the pipe 4 passed through the section, at appropriate intervals in the axial direction. Since a hollow screw 5 is manufactured by cold-rolling the metallic pipe 4 by using such rolling mill, the dimensional accuracy and straightness of the hollow screw 5 can be improved.

58. 发明专利

JPH01178384A STAINLESS CLAD SCREW AND ITS MANUFACTURE 失效
公开(公告)号：JPH01178384A
公开(公告)日：1989-07-14
申请号：JP281488
申请日：1988-01-08
申请人： SUMITOMO METAL IND
发明人： KURODA KOICHI , NAKASUJI KAZUYUKI
IPC分类号： B23K20/00
摘要： PURPOSE:To obtain a stainless clad screw at the drawing stage by inclined rolling by joining the outer layer stock of a stainless steel by fitting it to the peripheral face of the core stock of a carbon steel or low alloy steel. CONSTITUTION:After hot rolling a carbon steel or low alloy steel as a core bar 11 it is formed in the columnar or bar shape of circular section having specified length and diameter by executing grinding. Then, it is subjected to degreasing and cleaning and plating is executed or N foil is rolled on the peripheral face. As an outer layer stock 12, the welding pipe with a stainless steel as the material or seamless pipe is subjected to cold working after subjecting to hot extrusion or hot rolling and formed in the cylindrical body of circular section having specified length, outer diameter and thickness and the peripheral face is degreased and cleaned. The outer layer stock 12 is then outer-fitted to the core bar 11 and made a clad blank stock 10 by sealing the boundary part 13 at both end parts by welding. The clad blank stock 10 is then heated and rolled as well by drawing by the inclined rolling mill having three or four cone type rolling rolls having plural grooves in the peripheral direction and the stainless clad screw having spiral fins on the outer peripheral face is obtd.

59. 发明专利

JPS63303640A PRODUCTION OF METAL PIPE WITH SPIRAL FIN AND ITS DEVICE 失效
公开(公告)号：JPS63303640A
公开(公告)日：1988-12-12
申请号：JP13938087
申请日：1987-06-03
申请人： SUMITOMO METAL IND
发明人： KURODA KOICHI , NAKASUJI KAZUYUKI , HAYASHI CHIHIRO
IPC分类号： B21C37/20 , B21B19/04 , B21D53/06
摘要： PURPOSE:To execute the forming of a spiral fin simultaneously with pipe making by using the inclined rolling mill having plural grooves on the outer peripheral face of a rolling roll, executing the punch rolling of a solid metal bar by a piercing plug with hot treatment and forming a fin on the outer peripheral face as well. CONSTITUTION:A solid metal rod B in circular cross section is fed from an arrow mark direction to an inclined type piercing rolling mill after heating it at the specified temp. and bitten among rolling roils 1, 2, 3. The roils 1, 2, 3 are driven with rotation in an arrow mark direction, the solid metal rod B bitten therein is moved in the axial length direction with rotating around the axial center line to perform a spiral movement and a fin is led in order to the groove of the adjacent rolling roll of three rolling rolls. On the other hand the strain component is given by a plug 5 in the material radial direction from the material inner face, the metal is flowed to the depth direction of the roll groove and the outer diameter of the fin is formed larger than that of a billet.

60. 发明专利

JPS63268528A PRODUCTION OF SCREW 失效
公开(公告)号：JPS63268528A
公开(公告)日：1988-11-07
申请号：JP33069087
申请日：1987-12-25
申请人： SUMITOMO METAL IND
发明人： KURODA KOICHI , NAKASUJI KAZUYUKI
IPC分类号： B21H3/00 , B21H3/04 , B21H3/12
摘要： PURPOSE:To enlarge the dimensional range capable of production and to reduce a production cost by providing the conical roll having the annular groove whose interval is gradually widened by specified number on a cross-interaction slanted rolling mill and performing hot drawing rolling on a circular sectional metal stock. CONSTITUTION:Three-four pieces of conical rolling rolls 1-3 are formed as the same conical half angle alpha to compose a cross-interaction slanted rolling mill. The rolling rolls 1-3 from the same inclination and cross axes angle and are arranged at equal intervals for a pass line. Plural annular grooves with intervals gradually widened are formed on the rolling part in order to form a spiral projection bar toward the outlet side from the inlet side on each roll. When the circular sectional metal stock 4 having the outer diameter D1 larger than that DF of a product is subjected to warm rolling by this slanted rolling mill, the product dimensional shape can freely be set. Due to the mechanism being simple, the equipment cost can be reduced. And the dimensional range capable of production is enlarged and the production cost is reduced as well.

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