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1. 发明专利

JP2007162087A Method for cleaning steel strip in pickling line 有权
标题翻译：钢丝绳清理方法
公开(公告)号：JP2007162087A
公开(公告)日：2007-06-28
申请号：JP2005361473
申请日：2005-12-15
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIYAZAKI ATSUSHI , KITAIKE HIROYUKI
IPC分类号： C23G3/02 , C23C2/02
摘要： PROBLEM TO BE SOLVED: To provide a method for cleaning a steel strip in a pickling line by which the quality in the appearance of a pickled steel strip is improved, and further, in a line where pickling is performed as pretreatment in a production line for a hot dip galvanized steel strip, the defect of plating in the hot dip galvanized steel strip can be improved.
SOLUTION: The method for cleaning a steel strip in a pickling line is characterized in that, in a pickling line for pickling the surface of a steel strip after hot rolling, a spray of high pressure water is sprayed on the surface of a steel strip discharged from a pickling tank and from which a pickling liquid is squeezed by a wringer roll, thus the surface of the steel strip is cleaned.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种清洗酸洗线中的钢带的方法，通过该方法可以提高酸洗钢带的外观质量，此外，在进行酸洗处理的线中，热镀锌钢带生产线可以提高热镀锌钢带镀层的缺陷。解决方案：用于清洗酸洗线中的钢带的方法的特征在于，在热轧后的用于酸洗钢带表面的酸洗线中，喷射高压水喷在从酸洗槽排出的钢带，用绞拧辊挤压酸洗液，由此清洗钢带的表面。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005036304A METHOD OF PRODUCING HOT DIP Zn-Mg-Al BASED PLATED STEEL SHEET HAVING EXCELLENT APPEARANCE 有权
标题翻译：生产具有优异外观的热镀锌锌镁合金钢板的方法
公开(公告)号：JP2005036304A
公开(公告)日：2005-02-10
申请号：JP2003430019
申请日：2003-12-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NISHIMURA KAZUMI , SAWAI TAKASHI , TAKEUCHI EIICHI , HARADA HIROSHI , NIIGASHIRA HIDETOSHI , MATSUOKA HIDEO , MIYAZAKI ATSUSHI
IPC分类号： C23C2/26 , C23C2/02 , C23C2/06 , C23C2/12
摘要： PROBLEM TO BE SOLVED: To provide a method of producing a hot dip Zn-Mg-Al based plated steel sheet having excellent appearance. SOLUTION: As for the method of producing a hot dip Zn-Mg-Al based plated steel sheet having excellent appearance, in a method of producing a hot dip Zn-Mg-Al based plated steel sheet where a steel sheet is dipped into a coating bath comprising, by mass, 0.1 to 60% Al and 0.1 to 10% Mg and is taken up from the bath, and, after the control of the coating weight by wiping, the hot dip plated steel sheet is cooled to solidify the plating layer, after the control of the coating weight, before the cooling, the surface of the plating layer in the non-solidified state is contacted with a solid surface, so that solidified nuclei are formed inside the plating layer. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：待解决的问题：提供一种具有优异外观的热浸Zn-Mg-Al系镀覆钢板的制造方法。＆lt; P＆gt;解决方案：在制造具有优异外观的热浸Zn-Mg-Al系镀覆钢板的方法中，在制造浸渍Zn-Mg-Al系镀层钢板的方法中，进入包含质量为0.1〜60％的Al和0.1〜10％的Mg并从浴中吸收的涂布浴中，并且通过擦拭控制涂布重量后，将该热浸镀钢板冷却固化镀层在控制涂层重量之后，在冷却之前，将非固化状态的镀层的表面与固体表面接触，从而在镀层内形成固化的核。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004346382A Device and method for cooling hot dip metal coating bath 有权
公开(公告)号：JP2004346382A
公开(公告)日：2004-12-09
申请号：JP2003145590
申请日：2003-05-23
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MURAI TAKAKIMI , MATSUOKA HIDEO , MIYAZAKI ATSUSHI , TSUBOTA EIJI
IPC分类号： C23C2/00
摘要： PROBLEM TO BE SOLVED: To provide a device and a method for cooling a hot dip metal coating bath in which the area required for the cooling can be saved, vapor explosion during the cooling is prevented, and the operation is safely performed in the device for cooling the hot dip metal coating bath by dipping a cooling pipe in the hot dip metal coating bath to perform hot dip metal coating on a surface of a steel strip. SOLUTION: In the device and the method for cooling the hot dip metal coating bath in which the hot dip metal coating bath is cooled by dipping a cooling pipe in the hot dip metal coating bath to perform hot dip metal coating on the surface of the steel strip, and the cooling pipe to be dipped in the hot dip metal coating bath is formed of a double tube comprising an inner cooling pipe and an outer cooling pipe. COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2004059943A Method for controlling thickness of hot-dip plated metal film 审中-公开
公开(公告)号：JP2004059943A
公开(公告)日：2004-02-26
申请号：JP2002216160
申请日：2002-07-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIYAZAKI ATSUSHI , OKADA TETSUYA
IPC分类号： C23C2/20 , C23C2/06
摘要： PROBLEM TO BE SOLVED: To provide a method for properly controlling a thickness of a hot-dip plated metal film, and for giving a superior apparent quality of a plated surface.
SOLUTION: In the method for controlling the thickness of the hot-dipped metal film adhering onto the surface of a steel sheet with a gas wiping method, this controlling method is characterized by controlling a distance between a nozzle for gas wiping and the surface of the hot-dip metal plating bath to 10-80 mm. The hot-dip metal plating bath preferably contains Zn, Al of 5% or more, Mg and Si.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2006193791A HOT-DIP Zn-Al-Mg-Si-PLATED STEEL SHEET SUPERIOR IN SURFACE APPEARANCE, AND MANUFACTURING METHOD THEREFOR 有权
标题翻译：表面外观中的热镀Zn-Al-Mg-Si镀层钢板及其制造方法
公开(公告)号：JP2006193791A
公开(公告)日：2006-07-27
申请号：JP2005007351
申请日：2005-01-14
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NISHIMURA KAZUMI , HARADA HIROSHI , MATSUOKA HIDEO , ENJOJI TSUTOMU , KITAIKE HIROYUKI , MIYAZAKI ATSUSHI
IPC分类号： C23C2/06 , C23C2/02 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a hot-dip Zn-Al-Mg-Si-plated steel sheet which has superior surface appearance with few black spots, and to provide a manufacturing method therefor.
SOLUTION: The method for manufacturing the hot-dip Zn-Al-Mg-Si-plated steel sheet comprises the steps of: reducing a base steel sheet while heating it; cooling it; hot-dipping it in a bath including 2.8% or more Mg, 10.5% or more Al, 0.01-0.5% Si and the balance Zn with unavoidable components; adjusting a coating mass of the plated layer on the steel sheet appearing from a hot dipping pot, with a gas wiping technique; and cooling and solidifying the plated layer in a molten state at a cooling rate of 10°C/s or higher in a temperature range of 340±10°C and at a cooling rate of 7°C/s or lower in a temperature range of 330 to 310°C. Thus obtained steel sheet has a Zn-alloy-plated layer of which the X-ray intensity ratio of Mg
2 Zn
11 /MgZn
2 is 0.5 or lower, and shows a uniform appearance.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有优异的表面外观，几乎没有黑点的热浸Zn-Al-Mg-Si镀覆钢板，并提供其制造方法。解决方案：用于制造热浸镀Zn-Al-Mg-Si的钢板的方法包括以下步骤：在加热基材钢板的同时还原基体钢板; 冷却将其热浸在含有2.8％以上的Mg，10.5％以上的Al，0.01-0.5％的Si和余量为不可避免的成分的浴中; 通过气体擦拭技术调节从热浸罐出现的钢板上的镀层的涂层质量; 在340±10℃的温度范围内以10℃/ s以上的冷却速度和7℃/ s以下的冷却速度在熔融状态下将该镀层冷却固化为330〜310℃。如此获得的钢板具有Zn-Zn合金镀层，其中Mg 2 Zn 11 / MgZn 2 的X射线强度比为 0.5以下，外观均匀。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2004059942A Device and method for removing dross in snout in hot-dip metal plating 有权
公开(公告)号：JP2004059942A
公开(公告)日：2004-02-26
申请号：JP2002216158
申请日：2002-07-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIYAZAKI ATSUSHI , MURAI TAKAKIMI , MATSUOKA HIDEO , OMORI KIYOSHI
IPC分类号： C23C2/00 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a device for removing dross in a snout, which avoids the dross of a molten metal in the snout from adhering to a steel sheet, further prevents the dross from depositing in the snout and ensures an appearance and quality of a plated film, when hot-dip metal plating the surface of a steel sheet, and to provide a removal method.
SOLUTION: In a device for removing the dross floating on the surface of a molten metal bath in the snout in hot-dip metal plating, this device has two feeding nozzles for feeding a molten metal to the front and back surface of a steel sheet in the vicinity of the surface of the molten metal bath at one side of the steel sheet, and a suction port for absorbing the molten metal in the vicinity of the surface of the molten metal bath on the other side of the steel sheet. The suction port for sucking the molten metal preferably has a box-like shape and a straightening vane in the middle of the suction port.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2004059945A Method for manufacturing steel sheet hot-dipped with multicomponent metal superior in surface quality 审中-公开
公开(公告)号：JP2004059945A
公开(公告)日：2004-02-26
申请号：JP2002216183
申请日：2002-07-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIYAZAKI ATSUSHI , NIIGASHIRA HIDETOSHI
IPC分类号： C23C2/06 , C23C2/26 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a hot-dip metal-plated steel sheet superior in a surface quality, in plating with a multicomponent metal having a wide range of a solidification temperature.
SOLUTION: In the method for manufacturing the steel sheet hot-dipped with the multicomponent metal, by immersing and plating a cold-rolled and annealed steel sheet into a hot-dipping bath containing several metals (preferably Zn-Al-Mg), and then gas-cooling it by spouting a coolant gas onto the surface of the steel sheet, this manufacturing method is characterized by controlling a temperature of the steel sheet in a cooling zone of an inlet side for gas-cooling, to temperatures of 5°C or higher than the solidification starting temperature of a hot-dipped film, or of 5°C lower than the solidification starting temperature.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2004059944A Apparatus and method for cooling hot-dipped steel sheet 有权
公开(公告)号：JP2004059944A
公开(公告)日：2004-02-26
申请号：JP2002216168
申请日：2002-07-25
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： MIYAZAKI ATSUSHI , OKADA TETSUYA
IPC分类号： C23C2/26 , C23C2/40
摘要： PROBLEM TO BE SOLVED: To provide an apparatus for cooling a hot-dipped steel sheet, which maintains a surface quality, maximizes a coolability of the cooling apparatus and increases an efficiency of a productivity in manufacturing the plated steel sheet, in a cooling process after hot-dipping a steel sheet, and to provide a cooling method.
SOLUTION: In the apparatus for cooling the hot-dipped steel sheet by spraying a coolant gas onto the hot-dipped surface of the steel sheet, this apparatus has a gas knife for diagonally spraying a gas onto the surface of the steel sheet (preferably at a flow velocity of the coolant gas or higher) from the bottom side of the cooling apparatus to intercept the coolant gas.
COPYRIGHT: (C)2004,JPO

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