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1. 发明专利

JP2009241090A Method for producing hot dip galvannealed steel sheet having excellent surface quality 有权
标题翻译：用于生产具有优异表面质量的热镀锌钢板的方法
公开(公告)号：JP2009241090A
公开(公告)日：2009-10-22
申请号：JP2008089343
申请日：2008-03-31
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： YAMANAKA SHINTARO , IGARASHI YASUO , SATO YOSHIHIRO
IPC分类号： B21B45/08 , C21D9/46 , C22C38/00 , C22C38/04 , C22C38/54 , C23C2/02 , C23C2/06 , C23C2/28
摘要： PROBLEM TO BE SOLVED: To provide a hot dip galvannealed steel sheet having excellent appearance quality by suppressing plating alloying unevenness caused by ruggedness on the surface of the steel sheet, unevenness of the crystal grain sizes on the surface of the steel sheet and unevenness in elements on the surface of the steel sheet.
SOLUTION: When a steel having a composition comprising, by mass, 0.001 to 0.003% C, 0.005 to 0.1% Si, 0.01 to 0.4% Mn, 0.005 to 0.03% P and 0.005 to 0.02% S, and the balance Fe with inevitable impurities is hot-rolled, the pressure of descaling discharge water in primary descaling before the start of rough rolling is controlled to 980 to 3,000 KPa, also, a slab surface temperature T when starting the descaling is made to satisfy inequality (A); 1,000≤T≤3,330×(S%)+1,200, further, water for descaling is jetted to the surface of the steel sheet at a water temperature of ≤20°C, and hot rolling primary descaling is performed. Thereafter, the steel sheet is subjected to a rough rolling mill and finish rolling.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：通过抑制由钢板表面的粗糙度引起的电镀合金化不均匀性，钢板表面的晶粒尺寸的不均匀性以及钢板表面的晶粒尺寸的不均匀性，提供具有优异外观质量的热浸镀锌合金化钢板钢板表面的元素不均匀。＆lt; P＆gt;解决方案：当具有质量含量为0.001至0.003％的Si，0.005至0.1％的Si，0.01至0.4％的Mn，0.005至0.03％的P和0.005至0.02％的S，并且余量的Fe 不可避免的杂质被热轧时，在粗轧开始前的一次除垢中除垢排水的压力控制在980〜3000KPa，另外，开始除鳞时的板坯表面温度T满足不等式（A） ; 1,000≤T≤3,330×（S％）+ 1,200，另外，在水温≤20℃的条件下，向钢板表面喷射除垢皮，并进行热轧一次除垢。然后，对钢板进行粗轧机的精轧。版权所有（C）2010，JPO＆INPIT

2. 发明专利

JPS6361146A METHOD AND APPARATUS FOR MEASURING ADHESION QUANTITY OF RUST PREVENTING OIL 失效
公开(公告)号：JPS6361146A
公开(公告)日：1988-03-17
申请号：JP20532386
申请日：1986-09-01
申请人： NIPPON STEEL CORP
发明人： ONO MASAO , YAMADA TAMEYOSHI , SATO YOSHIHIRO , OOTA HITOSHI
IPC分类号： G01N21/64
摘要： PURPOSE:To instantaneously measure the adhesion quantity of rust preventing oil to a steel plate in-line, by measuring the quantity of fluorescence emitted from the rust preventing oil by exciting light allowed to irradiate the steel strip coated with the anticorrosion oil. CONSTITUTION:When the exciting light emitted from a light source device 4 is allowed to irradiate a steel strip 8 through a glass fiber 6 and the exciting light projector 2 of a measuring head 1, fluorescence is generated from the rust preventing oil adhered to the steel strip 8 corresponding to the adhesion quantity of the rust preventing oil. The intensity of the quantity of fluorescence is detected by a fluorescence quantity counter 5 through the fluorescence quantity receiver 3 of the measuring head 1 and the glass fiber 6 and a count number is digitally displayed. Further, by connecting the adhesion quantity operation apparatus 7 incorporated in a microcomputer to the fluorescene quantity counter 5, the adhesion quantity of the rust preventing oil is operated from the output value of the count number of the quantity of fluorescence on the basis of the characteristic data of a calibration curve by the adhesion quantity operation apparatus and digitally displayed, for example, is a gram number per square meter.

3. 发明专利

JPH03179234A MEASUREMENT OF OIL COMPONENT IN SOLUBLE OIL 失效
公开(公告)号：JPH03179234A
公开(公告)日：1991-08-05
申请号：JP32382889
申请日：1989-12-15
申请人： NIPPON STEEL CORP
发明人： SENOO KENGO , SATO YOSHIHIRO , OMODAKA KATSUJI , KOGANEMORI HARUO , KAWARADA MINORU
IPC分类号： G01N31/00 , G01N3/28
摘要： PURPOSE:To reduce measurement of an oil component remarkably while ena bling prevention of changes in quality of a treating material as caused by deteri oration in the oil by a method wherein a soluble oil is held into a container, mineral acid is added thereto and then, the oil component is separated by centrif ugal separation. CONSTITUTION:A soluble oil (for example, a part of a soluble oil used is taken out) is held into a container and for example, one or two or more of hydrochloric acid, sulfuric acid, phosphoric acid, nitric acid and the like are added thereto as mineral acid. Then, the container is set into a centrifugal separator to separate an oil component of the soluble oil within the container. In such an arrangement, with the addition of the mineral acid, iron components or the like in the oil are dissolved while the oil component is separated in a scum. At the same time, separation in the container by the centrifugal separation ensures the separation. Then, the oil component separated is shifted to an another container to measure an amount of the oil component (by capacity ratio). Here, the use of a transparent container with a graduation makes the measurement even quicker.

4. 发明专利

JPH11106035A CARRIER DEVICE OF HOT ROLLED COIL 失效
公开(公告)号：JPH11106035A
公开(公告)日：1999-04-20
申请号：JP26872997
申请日：1997-10-01
申请人： NIPPON STEEL CORP
发明人： OKADA HIROYUKI , TAKAHASHI MASAYOSHI , SATO YOSHIHIRO , WAKASUGI NOBUYUKI , YAMADA TAICHI
IPC分类号： B65G47/52
摘要： PROBLEM TO BE SOLVED: To provide a carrier device of a hot rolled coil capable of reducing generation of a crack of the hot rolled coil accompanying the carrying and efficiently carrying the hot rolled coil between conveyors. SOLUTION: This carrier device is constituted of a conveyor 4 with saddle which carries a hot rolled coil having finished hot rolling so that a coil rolling direction and a conveyor advancing direction may be parallel and a coil inside diameter hole may be located in the horizontal direction, a V-slat conveyor 7 orthogonally crossing with this conveyor 4 with saddle, carries the hot rolled coil so that the coil rolling direction and the conveyor advancing direction may be at right angle and the coil inside diameter hole may be located in the horizontal direction and is divided into a plurality of V-slat conveyors, a transfer device 8 transferring the hot rolled coil from the conveyor 4 with saddle to the V-slat conveyors 7 and automatic connecting trucks 9 for transferring hot rolled coil between each V-slat conveyor 7, 7.

5. 发明专利

JPH11105821A APPARATUS FOR BUNDLING HOT COILS 失效
公开(公告)号：JPH11105821A
公开(公告)日：1999-04-20
申请号：JP27736497
申请日：1997-10-09
申请人： NIPPON STEEL CORP , KOHAN KOGYO
发明人： OKADA HIROYUKI , SATO YOSHIHIRO , KAWATANI HIROMI , IWAMURA TERUO
IPC分类号： B65B27/06
摘要： PROBLEM TO BE SOLVED: To prevent a hot coil outer periphery after bundling from loosening or a band from being cut, and to reduce fastening time by measuring a temperature of the hot coil outer periphery by a thermometer provided on a bundling machine before tightly attaching the band to the hot coil outer periphery and by fastening and tightening the band with proper fastening force based on the temperature information. SOLUTION: An excessive band is brought back by reversely rotating an air motor 2, and a band is wound around a coil C when a bundling head 1 comes into contact with the coil C. At this time, the bundling head 1 lowers, and before it comes into contact with the coil C, measuring of a temperature of a coil outer periphery is started by a thermometer 2. Based on the correct coil outer periphery temperature information, time from a point when the band is wound around the coil outer periphery until fastening is completed is estimated, and breaking force and elastic limit of the band is obtained from a band surface temperature at the time of fastening completion to obtain fastening force which may cause no breakage. Thereafter transmission of the air motor 2 is changed over to a low speed/high torque side, and the band is fastened by the bundling head 1 for tightening.

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