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1. 发明专利

JP2007098420A Spinning method 有权
标题翻译：纺纱方法
公开(公告)号：JP2007098420A
公开(公告)日：2007-04-19
申请号：JP2005289979
申请日：2005-10-03
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： ANDO AKIHIRO , SAKAMOTO KAZUYUKI , KANO SHINOBU , HARA KENJI
IPC分类号： B21D41/04 , B21D22/14
摘要： PROBLEM TO BE SOLVED: To provide a spinning method which can prevent the generation of the fractures originated from the spinning end of a base material portion or the welding end of a welded portion, and also can prevent the generation of wrinkles during spinning, when a necked portion is formed on the pipe end of a pipe material by spinning.
SOLUTION: When the necked portion is formed on the pipe end of the pipe material by spinning, a spinning roller is reciprocated in the axial direction within the range between the points just before both pipe ends without being reciprocated beyond the pipe ends of the spinning pipe. Then, a diameter reducing amount at the pipe end is smaller than that of the spinning portion other than the pipe end, and a so-called bellmouth shape projection is formed at the spinning end. As a result, the generation of the fractures originated from the spinning end of the base material portion or the welding end of the welded portion and the generation of wrinkles during spinning can be prevented.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够防止源自基材部的纺丝端或焊接部的焊接端的裂缝的产生的纺丝方法，并且还能够防止纺丝时产生褶皱当通过纺丝在管材的管端上形成颈部时。解决方案：当通过纺丝在管材的管端形成颈缩部分时，纺丝辊在刚好在两个管端之间的点之间的范围内沿轴向往复运动，而不会往复运动超过管端纺纱管。然后，在管端的直径减小量小于除管端以外的纺丝部的直径减小量，并且在纺丝端形成所谓的喇叭形突起。结果，可以防止源自基材部分的纺丝端或焊接部分的焊接端的裂缝的产生，并且可以防止纺丝期间产生皱纹。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2004174531A Method for press-forming steel sheet and its die device 有权
公开(公告)号：JP2004174531A
公开(公告)日：2004-06-24
申请号：JP2002341750
申请日：2002-11-26
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： OOKUSU HIROSHI , KUBO TATSUHIRO , SAKAMOTO KAZUYUKI , HARA KENJI
IPC分类号： B21D5/01
摘要： PROBLEM TO BE SOLVED: To provide a press-forming method by which a product having high shape accuracy is manufactured while suppressing defects in shape caused by the occurrence of a wall camber, wrinkles, and twist even when performing the press forming of parts having a hat-shaped cross section by taking a high tensile strength steel sheet as a base stock.
SOLUTION: When bending the base stock 1 into a hat-shaped cross-sectional shape by forcing the base stock 1 into the recessed opening 24 of a fixed die 21 with a movable punch 31, the base stock is bent into a U-shaped cross section by forcing the movable punch 31 into the fixed die 21 without adding wrinkle pressing force to both end parts of the base stock 1 and also the wall camber is reduced by mitigating stress remaining in the vertical wall part of the hat-shaped cross section by imparting tension by forming an upward forced bead on the flange of the hat-shaped cross section by forcing a bead forming projecting parts 33 provided on the flange pressurizing surface 32 of the movable punch 31 into bead forming recessed parts 23 provided on the flange pressurizing surfaces 22 on the upper surfaces of both sides of the fixed die 21.
COPYRIGHT: (C)2004,JPO

3. 发明专利

JP2007283315A Method for spinning tube end 审中-公开
标题翻译：旋转管末端方法
公开(公告)号：JP2007283315A
公开(公告)日：2007-11-01
申请号：JP2006110488
申请日：2006-04-13
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： SAKAMOTO KAZUYUKI , ANDO AKIHIRO , KANO SHINOBU , HARA KENJI
IPC分类号： B21D41/04
摘要： PROBLEM TO BE SOLVED: To provide a method for spinning a tube end by which thickness reduction apt to occur in a tapered part is suppressed as much as possible when forming a reduced diameter part by allowing a working roller on a tube end. SOLUTION: After making work hardening in the part to be worked by imparting uniform diameter reduction to the entire circumference by inserting the part to be worked of a tube to be worked into a die and imparting prestrain to the part to be worked, the tapered part the diameter of which is gradually reduced toward the end part of the tube to be worked is formed by moving a working roller back and forth in the axial direction while moving the roller in the radial direction of the tube to be worked by using the working roller which is arranged on the outer periphery of the tube to be worked and is relatively revolved around the tube. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种通过允许工作辊在管端上形成直径缩小部分时尽可能地抑制在锥形部分中容易发生厚度减小的管端的方法。解决方案：通过将要加工的管的待加工部件插入模具中并将预应变施加到待加工的部件上，通过使整个圆周的直径减小均匀地对待加工的部件进行加工硬化之后，其直径朝向待加工管的端部逐渐减小的锥形部分是通过使工作辊在轴向方向前后移动而形成的，同时通过使用在待加工管的径向方向上移动辊所述加工辊布置在待加工的管的外周上并围绕管相对旋转。版权所有（C）2008，JPO＆INPIT

4. 发明专利

JP2004298906A Method for drawing coated metal plate 审中-公开
公开(公告)号：JP2004298906A
公开(公告)日：2004-10-28
申请号：JP2003093238
申请日：2003-03-31
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： ANDO AKIHIRO , SAKAMOTO KAZUYUKI , NISHIO KATSUHIDE , HARA KENJI
IPC分类号： B05D7/14 , B21D22/00 , B21D22/20
摘要： PROBLEM TO BE SOLVED: To provide a drawing method which hardly cause coating film peeling when a coated metal plate is drawn.
SOLUTION: Coating film peeling is prevented by drawing a coated metal plate under various conditions in advance to check a coating film peeling state, performing the drawing simulation under the same condition as the drawing condition with an original metal plate before coating as a stock material to estimate the minimum principal strain for causing coating film peeling from both results, and adjusting the corner cut amount and the drawing condition so that the strain at a part with easy coating film peeling does not reach the minimum principal strain for causing coating film peeling when drawing the coated metal plate.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JPH0978229A PRODUCTION OF ZINC-MAGNESIUM ALLOY PLATED STEEL SHEET 失效
公开(公告)号：JPH0978229A
公开(公告)日：1997-03-25
申请号：JP25815495
申请日：1995-09-11
申请人： NISSHIN STEEL CO LTD
发明人： SAKAMOTO KAZUYUKI , ARIYOSHI YASUMI , FUKUI YASUSHI , SAITO MINORU
IPC分类号： C23C14/16 , C23C14/58 , C23C28/02
摘要： PROBLEM TO BE SOLVED: To produce a Zn-Mg alloy plated steel sheet totally excellent in various characteristics such as corrosion resistance, coating adhesion, workability, weldability or the like. SOLUTION: A continuously running steel sheet is introduced into a vacuum chamber and is applied with vapor deposition plating in the order of Zn, Mg and Zn. After that, the plated steel sheet is cooled under the conditions in which the steel sheet temp. immediately after the completion of the vapor deposition plating is regulated to

6. 发明专利

JPH07305164A METHOD FOR VAPORIZING MG BY ARC 失效
公开(公告)号：JPH07305164A
公开(公告)日：1995-11-21
申请号：JP11965494
申请日：1994-05-09
申请人： NISSHIN STEEL CO LTD
发明人： FUKUI YASUSHI , SAKAMOTO KAZUYUKI , ARIYOSHI YASUMI , SAITO MINORU
IPC分类号： C23C14/24
摘要： PURPOSE:To stably vaporize a large amt. of Mg by arc with high productivity by increasing the vaporization rate. CONSTITUTION:An arc discharge is generated between an Mg vaporization source 2 (cathode) and an anode to vaporize Mg. In this case, the Mg vaporization source is kept at 120-540 deg.C. Consequently, since the source is kept at >=120 deg.C, a Joule heat-affected part 5 formed by the arc discharge 4 is widened, and the vaporization 6 of Mg is promoted.

7. 发明专利

JPH10152777A VACUUM DEPOSITION SYSTEM 失效
公开(公告)号：JPH10152777A
公开(公告)日：1998-06-09
申请号：JP31443096
申请日：1996-11-26
申请人： MITSUBISHI HEAVY IND LTD , NISSHIN STEEL CO LTD
发明人： TANAKA KISABURO , HIRAI ETSURO , HASHIMOTO RITSUO , SHIMAKAWA TSUKASA , SAITO MINORU , FUKUI YASUSHI , SAKAMOTO KAZUYUKI , MORIYAMA YOSHITERU , AIKO TAKUYA , TAKEZAKI KATSUYUKI , HIGUCHI TAKEHIKO
IPC分类号： C23C14/24 , C23C14/56
摘要： PROBLEM TO BE SOLVED: To provide a vacuum deposition device capable of vapor deposition on both faces by the same system and furthermore capable of the formation of the uniform vapor-deposited faces. SOLUTION: A band steel 10 previously heated to a prescribed temp. is passed through a vacuum chamber 15 with a high vacuum degree, for vapor- depositing metal vapor generated by heating molten metal in a melting crucible 6 on both faces of the band steel 10, the boundary between bifurcated shunt hoods 2 and 2' and a vapor generating chamber 4 is provided with a shutter 3 regulating the flow rate of vapor in which plural pores with different diameter are bored, the metal vapor is introduced into both faces of the band steel 10 from the shutter 3, and furthermore, vapor depositing hoods 1 and 1' connected to the shunt hoods 2 and 2' are respectively provided with porous boards 1a and 1'a for rectification for uniformizing the vapor deposition onto the band steel 10.

8. 发明专利

JPH10317125A PRODUCTION OF VAPOR DEPOSITION ZINC PLATED STEEL STRIP 失效
公开(公告)号：JPH10317125A
公开(公告)日：1998-12-02
申请号：JP13220797
申请日：1997-05-22
申请人： NISSHIN STEEL CO LTD
发明人： SAKAMOTO KAZUYUKI , ARIYOSHI YASUMI , FUKUI YASUSHI , SAITO MINORU
IPC分类号： C23C14/14 , C23C14/24 , C23C28/02
摘要： PROBLEM TO BE SOLVED: To obtain a vapor deposition Zn plated steel strip or a vapor deposi tion Zn-Mg plated steel strip, having a pore-free dense Zn layer and excellent in corrosion resistance. SOLUTION: At the time of producing a vapor deposition Zn plated steel strip by introducing a continuously traveling steel strip into a vacuum chamber, vapor deposition Zn plating is carried out under the condition that a relation of T>=-(2/5)R+215 is valid between the temp. T( deg.C) of the steel strip to be vapor deposition plated and Zn vapor deposition rate R (g/m .sec), by which the dense vapor deposition Zn plating layer free from pores in the inner part is formed. At the time of producing a vapor deposition Zn-Mg plated steel strip by performing vapor deposition plating treatments with Zn, Mg, and Zn in the order named, a relation of T>=-(2/5)R+215 is valid at the time of applying a first vapor deposition Zn plating. It is preferable that respective Zn vapor deposition treatments are carried out in the vacuum chamber held so that it has an atmosphere composed of nonoxidizing gases of 0.005-1.0 Torr pressure. By this method, the dense vapor deposition Zn layer can be formed, and corrosion resistance inherent in vapor deposition plating can be produced.

9. 发明专利

JPH09170070A PRODUCTION OF ZINC-MAGNESIUM ALLOY PLATED STEEL SHEET 失效
公开(公告)号：JPH09170070A
公开(公告)日：1997-06-30
申请号：JP34773995
申请日：1995-12-15
申请人： NISSHIN STEEL CO LTD
发明人： SAKAMOTO KAZUYUKI , ARIYOSHI YASUMI , FUKUI YASUSHI , SAITO MINORU
IPC分类号： C23C14/14
摘要： PROBLEM TO BE SOLVED: To produce a steel sheet having a Zn-Mg alloy coating layer of always normal structure by a vapor deposition process. SOLUTION: A steel strip, introduced into a vacuum chamber, is subjected to vapor deposition Mg plating in succession to vapor deposition Zn plating. At this time, when the time from a first Zn plating to Mg plating and the partial pressure of water vapor in this section are represented by T1 (sec) and H1 (Pa), respectively, and also the time from Mg plating to a second Zn plating and the partial pressure of water vapor in this section are represented, respectively, by T2 (sec) and H2 (Pa), the times T1 , T2 and the partial pressures of water vapor H1 , H2 are controlled so that the conditions of H1 ×T1

10. 发明专利

JPH0860342A VAPOR DEPOSITED ZINC-MAGNESIUM ALLOY PLATED STEEL SHEET HAVING EXCELLENT ADHESION PROPERTY AND ITS MANUFACTURE 失效
公开(公告)号：JPH0860342A
公开(公告)日：1996-03-05
申请号：JP21426094
申请日：1994-08-16
申请人： NISSHIN STEEL CO LTD
发明人： FUKUI YASUSHI , SAKAMOTO KAZUYUKI , MATSUNO MASANORI , SAITO MINORU
IPC分类号： C23C14/16
摘要： PURPOSE: To manufacture a vapor deposited Zn-Mg alloy plated steel sheet having an excellent adhesion property by forming a Zn-Fe alloy layer having a specific Fe concn. at the boundary between substrate steel and a Zn-Mg alloy plating layer. CONSTITUTION: Zn is deposited by evaporation at deposition of 0.03g/m on the continuously traveling steel sheet and further, vapor deposition of Mg and vapor deposition of Zn are independently and successively executed. This steel sheet is then subjected to a heat treatment i a temp. range of 270 to 370 deg.C and the Zn-Fe alloy layer (its thickness is preferably about 0.01 to 0.5μm) having >=6wt.% Fe concn is formed at the boundary between the substrate steel and the Zn-Mg alloy layer. As a result, the vapor deposited Zn-Mg alloy plated steel sheet having the improved adhesion property and workability is obtd.

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