公开(公告)号：US06217679B1

公开(公告)日：2001-04-17

申请号：US09194129

申请日：1998-11-23

申请人： Masaaki Kohno ,  Kunio Fukuda ,  Kazuhide Ishii ,  Susumu Satoh ,  Hiroshi Yaginuma ,  Takumi Ujiro

发明人： Masaaki Kohno ,  Kunio Fukuda ,  Kazuhide Ishii ,  Susumu Satoh ,  Hiroshi Yaginuma ,  Takumi Ujiro

IPC分类号： C21D802

CPC分类号： C21D8/0205 ,  C21D8/0226 ,  C21D8/0278

摘要： The invention provides hot-rolled steel strips which, after having been acid-pickled, can be directly used. The strips have no Cr-decreasing layer and no shot blasted marks on their surface and have good corrosion resistance. The invention also provides a technique of efficiently producing the hot-rolled steel strips. A steel slab having a Cr content of from 6.0 to 25.0 wt. % is hot-rolled, then coiled at a temperature not higher than 700° C., then optionally quenched in water immediately after the coiling, then annealing in a reducing atmosphere, and thereafter acid-pickled in a solution of nitric acid/hydrochloric acid.

摘要翻译： 本发明提供了可以直接使用酸洗后的热轧钢带。 带材没有减薄层，表面没有喷丸痕迹，具有良好的耐腐蚀性。 本发明还提供了一种有效地生产热轧钢带的技术。 Cr含量为6.0〜25.0重量％的钢坯 ％热轧，然后在不高于700℃的温度下卷绕，然后在卷取后立即在水中骤冷，然后在还原气氛中退火，然后在硝酸/盐酸溶液中酸洗 。

公开(公告)号：US5948181A

公开(公告)日：1999-09-07

申请号：US939945

申请日：1997-09-29

申请人： Masaaki Kohno ,  Kazuhide Ishii ,  Kunio Fukuda ,  Takumi Ujiro ,  Susumu Satoh

发明人： Masaaki Kohno ,  Kazuhide Ishii ,  Kunio Fukuda ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： B21B45/08 ,  C21D8/02 ,  C22C38/18 ,  C21D7/13

CPC分类号： C21D8/0205 ,  B21B45/08 ,  C21D8/0278

摘要： A hot-rolled stainless steel strip contains at least 10 wt % Cr and 1.0 wt % or less of Si, and has a controlled scale thickness of not more than 2.5 .mu.m in the surface layer. The average thickness of the Si-containing oxide layer formed in the scale/alloy substitute interface is 0.1 .mu.m or less. The hot-rolled stainless steel strip is produced by hot rolling at an elongation rate of at least 150 or hot rough rolling to form a sheet bar, descaling by spraying superhigh pressure water to the surface of the sheet bar at an impact pressure (p) of 25 kgf/cm.sup.2 or more and a flow rate density of 0.002 l/cm.sup.2 or more, and then finish rolling so that the maximum reduction ratio per pass satisfies certain disclosed criteria.

摘要翻译： 热轧不锈钢带含有至少10重量％的Cr和1.0重量％以下的Si，并且在表面层中具有不大于2.5μm的可控鳞片厚度。 形成在刻度/合金替代界面中的含Si氧化物层的平均厚度为0.1μm以下。 热轧不锈钢带通过以至少150的伸长率或热粗轧进行热轧制成，以形成片材，通过在冲击压力（p）下将超高压水喷射到片材的表面进行除鳞， 25kgf / cm 2以上，流量密度为0.002l / cm 2以上，进行精轧，使每通过最大压下率满足一定的公开标准。

公开(公告)号：US6149744A

公开(公告)日：2000-11-21

申请号：US177470

申请日：1998-10-23

申请人： Kunio Fukuda ,  Takumi Ujiro ,  Masaaki Kohno ,  Susumu Satoh ,  Masahiro Yoshioka ,  Shinji Yamazaki

发明人： Kunio Fukuda ,  Takumi Ujiro ,  Masaaki Kohno ,  Susumu Satoh ,  Masahiro Yoshioka ,  Shinji Yamazaki

IPC分类号： C23G1/08 ,  C25F1/06 ,  C21D8/02

CPC分类号： C23G1/086 ,  C25F1/06

摘要： Method of making a hot-rolled steel sheet having superior surface appearance, free of surface patterns and uneven glossiness from an austenitic stainless steel slab containing about 0.03 percent by weight or more of Cu, about 0.03 percent by weight or more of V, and about 0.01 percent by weight or more of Mo under any of the following conditions: (A) pickling in a nitric-hydrofluoric acid solution containing about 20 to 100 g/l of nitric acid and about 100 to 300 g/l of hydrofluoric acid; (B) controlling nitric-hydrofluoric acid content in response to the iron ion content in the solution; (C) a preliminary pickling step prior to finishing pickling; (D) grinding about 2 .mu.m or more of the surface after preliminary pickling and prior to finishing pickling; (E) causing counterflow with a relative flow rate of 0.5 to 5.0 m/sec on the sheet surface during finishing pickling; (F) adding sulfuric acid or sulfurous acid as a hydrogen ion source to the nitric-hydrofluoric acid solution; and (G) electrolysing during finishing pickling such that the ratio of the cathodic electrolysis time to the anodic electrolysis time is about 3 or more.

摘要翻译： 制造含有约0.03重量％以上的Cu，约0.03重量％以上的V的奥氏体不锈钢板和具有大约0.03重量％以上的奥氏体不锈钢板的具有优异的表面外观，无表面图案和不均匀光泽度的热轧钢板的制造方法 在以下任一条件下，为0.01重量％以上的Mo：（A）在含有约20〜100g / l硝酸和约100〜300g / l氢氟酸的硝酸 - 氢氟酸溶液中酸洗; （B）响应于溶液中的铁离子含量控制硝酸 - 氢氟酸含量; （C）酸洗前的初步酸洗步骤; （D）在初步酸洗后，酸洗前，研磨约2μm或以上的表面; （E）在整理酸洗期间在片材表面上以0.5-5.0m / sec的相对流速引起逆流; （F）向硝酸 - 氢氟酸溶液中加入硫酸或亚硫酸作氢离子源; 和（G）在整理酸洗期间的电解，使得阴极电解时间与阳极电解时间的比例为约3以上。

公开(公告)号：US06719855B2

公开(公告)日：2004-04-13

申请号：US10069748

申请日：2002-02-27

申请人： Kunio Fukuda ,  Susumu Satoh ,  Kazuhide Ishii ,  Takeshi Fujihira ,  Akira Kawaharada

发明人： Kunio Fukuda ,  Susumu Satoh ,  Kazuhide Ishii ,  Takeshi Fujihira ,  Akira Kawaharada

IPC分类号： C22C38067

CPC分类号： C22C38/18 ,  C21D8/0205 ,  C21D8/0268 ,  C22C9/04 ,  C22C38/001 ,  C22C38/002 ,  C22C38/004 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/28 ,  Y10T428/12431

摘要： The present invention provides an Fe—Cr—Al-based alloy for catalyst carriers and a foil thereof having a thickness of 40 &mgr;m or less, the alloy and the foil improved in the oxidation resistance at high temperatures and having excellent deformation resistance. Specifically, the present invention provides an Fe—Cr—Al-based alloy foil and a manufacturing method thereof, comprising 16.0 to 25.0 mass % of Cr, 1 to 8 mass % of Al, La, Zr, and the balance being Fe and incidental impurities. The contents by mass % of La and Zr meet the following ranges when the foil thickness thereof is t &mgr;m: 1.4/t≦La≦6.0/t  (1) 0.6/t≦Zr≦4.0/t  (2) The Fe—Cr—Al-based alloy foil may further comprises Hf and the balance being Fe and incidental impurities, wherein the contents by mass % of La, Zr, and Hf meet the following ranges: 1.4/t≦La≦6.0/t  (1) 0.4/t≦Zr≦2.0/t  (3) 0.5/t≦Hf≦2.0/t  (4).

摘要翻译： 本发明提供一种厚度为40μm以下的催化剂载体的Fe-Cr-Al系合金及其箔，该合金和箔在高温下耐氧化性提高，耐变形性优异。 具体地说，本发明提供一种Fe-Cr-Al系合金箔及其制造方法，其包含16.0〜25.0质量％的Cr，1〜8质量％的Al，La，Zr，余量为Fe， 杂质。 当La和Zr的质量百分含量满足下列范围时，其厚度为：Fe-Cr-Al系合金箔还可以包含Hf，余量为Fe和附带杂质，其中质量含量 La，Zr和Hf的％满足以下范围：

公开(公告)号：USRE40950E1

公开(公告)日：2009-11-10

申请号：US10678057

申请日：2000-03-14

申请人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C22C38/18

CPC分类号： C22C38/46 ,  C21D8/0405 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0473 ,  C22C38/001 ,  C22C38/002 ,  C22C38/48

摘要： The present invention provides a ferritic stainless steel sheet having excellent formability and excellent surface quality after forming. In specific means, the steel sheet contains, by mass %, 0.02 to 0.06% of C, 1.0% or less of Si, 1.0% or less of Mn, 0.05% or less of P, 0.01% or less of S, 0.005% or less of Al, 0.005% or less of Ti, 11 to 30% of Cr, 0.7% or less of Ni, the balance composed of Fe, and inevitable impurities, wherein N is contained to satisfy the relation to the C content represented by 0.06≦(C+N)≦0.12, and 1≦N/C, and V is contained to satisfy the relation to the N content represented by 1.5×10−3≦(V×N)≦1.5×10−2 (wherein C, N and V: the contents (mass %) of the elements).

公开(公告)号：US06419878B2

公开(公告)日：2002-07-16

申请号：US09867422

申请日：2001-05-31

申请人： Yoshihiro Yazawa ,  Takumi Ujiro ,  Susumu Satoh ,  Hiroki Ota

发明人： Yoshihiro Yazawa ,  Takumi Ujiro ,  Susumu Satoh ,  Hiroki Ota

IPC分类号： C22C3852

CPC分类号： C22C38/52 ,  C22C38/001 ,  C22C38/004 ,  C22C38/34 ,  C22C38/44 ,  C22C38/46 ,  C22C38/58

摘要： Fe—Cr alloy having excellent weldability and initial rust resistance with no requirement of greatly increasing the amount of elements such as Ni, Cu, Cr or Mo, addition of Nb or Ti and, further, excess reduction of C and N, in which the Fe—Cr alloy containing Cr in an amount of more than about 8.0 mass % and less than about 15 mass % is controlled specifically for the ingredients to contain Co: from about 0.01 mass % to about 0.5 mass %, V: from about 0.01 mass % to about 0.5 mass % and W: from about 0.001 mass % to about 0.05 mass %, and a value X represented by the following equation (1) and, preferably, a value Z represented by the following equation (2) satisfy: X≦11.0, and 0.03≦Z≦1.5 respectively: X value=Cr(mass %)+Mo(mass %)+1.5Si(mass %)+0.5Nb(mass %)+0.2V(mass %)+0.3W(mass %)+8Al(mass %)−Ni(mass %)−0.6Co(mass %)−0.5Mn(mass %)−30C(mass %)−30N(mass %)−0.5Cu(mass %)  (1) Z value=(Co(mass %)+1.5V(mass %)+4.8W(mass %))  (2) ,and more preferably, C/N is controlled to be 0.6 or less.

摘要翻译： Fe-Cr合金具有优异的焊接性和初始防锈性，不需要大量增加元素如Ni，Cu，Cr或Mo，添加Nb或Ti，进一步减少C和N，其中 对于含有Co的成分，含量大于约8.0质量％且小于约15质量％的Cr的Fe-Cr合金被控制为约0.01质量％至约0.5质量％，V：约0.01质量％ 至约0.5质量％，W：约0.001质量％至约0.05质量％，由下式（1）表示的值X，优选由下式（2）表示的值Z满足：X <= 11.0和0.03 <= Z <= 1.5，更优选将C / N控制在0.6以下。

公开(公告)号：US06383309B1

公开(公告)日：2002-05-07

申请号：US09725624

申请日：2000-11-29

申请人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C22C3818

摘要： A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

公开(公告)号：US06645324B2

公开(公告)日：2003-11-11

申请号：US10103445

申请日：2002-03-21

申请人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Norimasa Hirata ,  Takeshi Yokota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C21D802

CPC分类号： C21D6/002 ,  C21D8/0205 ,  C21D8/0226 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0273 ,  C21D8/0405 ,  C22C38/002 ,  C22C38/40

摘要： A ferritic stainless steel plate of excellent ridging resistance and formability, as well as a manufacturing method thereof are proposed. Specifically, the rolling is conducted at a rolling reduction of 30% or more in at least 1 pass and at a temperature difference between the center of the plate thickness and the surface of 200° C. or lower in a pass for the maximum rolling reduction to cause the area ratio of a {111} orientation colony to be present by 30% or more in the regions of ⅛ to ⅜ and ⅝ to ⅞ of the plate thickness. The {111} orientation colony is an assembly of adjacent crystals in which the angle of orientation vector for each of the crystals relative to the direction vector vertical to the rolling surface is within 15°.

摘要翻译： 提出了具有优异抗皱性和成形性的铁素体不锈钢板及其制造方法。 具体而言，在至少1次通过中的压下率为30％以上，在板厚中心与200℃以下的温度差之间进行轧制，最终轧制压下率 使{111}取向菌落的面积比在板厚的1/8〜3/8〜5/8〜7/8的范围内存在30％以上。 {111}取向菌落是相邻晶体的组合，其中每个晶体相对于垂直于滚动表面的方向矢量的<111>取向矢量的角度在15°以内。

公开(公告)号：US5709836A

公开(公告)日：1998-01-20

申请号：US602857

申请日：1996-02-28

申请人： Mitsuyuki Fujisawa ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh ,  Koji Yamato

发明人： Mitsuyuki Fujisawa ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh ,  Koji Yamato

IPC分类号： C21D8/04 ,  C22C27/06 ,  C22C38/00 ,  C22C38/28 ,  C22C38/32 ,  C22C38/26

CPC分类号： C22C27/06 ,  C22C38/28 ,  C22C38/32

摘要： A chromium steel sheet having excellent press formability, particularly deep-drawing formability and resistance to secondary work brittleness. The construction is a chromium steel sheet including C: not more than 0.03 wt %, Si: not more than 1.0 wt %, Mn: not more than 1.0 wt %, P: not more than 0.05 wt %, S: not more than 0.015 wt %, Al: not more than 0.10 wt %, N: not more than 0.02 wt %, Cr: 5-60 wt %, Ti: 4(C+N)-0.5 wt %, Nb: 0.003-0.020 wt %, B: 0.0002-0.005 wt %, and, if necessary, one or more selected from Mo: 0.01-5.0 wt %, Ca: 0.0005-0.01 wt % and Se: 0.0005-0.025 wt %, and the balance being Fe and inevitable impurities.

摘要翻译： PCT No.PCT / JP95 / 01341 Sec。 371日期1996年2月28日 102（e）日期1996年2月28日PCT提交1995年7月5日PCT公布。 第WO96 / 01335号公报 日期1996年5月18日具有优异的压制成型性，特别是深冲成形性和耐二次加工脆性的铬钢板。 该结构是C：不大于0.03重量％，Si：1.0重量％以下，Mn：1.0重量％以下，P：0.05重量％以下S：不大于0.015的铬钢板 重量％，Al：0.10重量％以下，N：0.02重量％以下，Cr：5-60重量％，Ti：4（C + N）-0.5重量％，Nb：0.003-0.020重量％ B：0.0002-0.005重量％，如果需要，选自Mo：0.01-5.0重量％，Ca：0.0005-0.01重量％和Se：0.0005-0.025重量％中的一种或多种，​​余量为Fe和不可避免的杂质 。

公开(公告)号：US06458221B1

公开(公告)日：2002-10-01

申请号：US09700779

申请日：2000-11-20

申请人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

发明人： Hiroki Ota ,  Yasushi Kato ,  Takumi Ujiro ,  Susumu Satoh

IPC分类号： C22C3818

CPC分类号： C22C38/46 ,  C21D8/0405 ,  C21D8/0436 ,  C21D8/0463 ,  C21D8/0473 ,  C22C38/001 ,  C22C38/002 ,  C22C38/48

摘要： The present invention provides a ferritic stainless steel sheet having excellent formability and excellent surface quality after forming. In specific means, the steel sheet contains, by mass %, 0.02 to 0.06% of C, 1.0% or less of Si, 1.0% or less of Mn, 0.05% or less of P, 0.01% or less of S, 0.005% or less of Al, 0.005% or less of Ti, 11 to 30% of Cr, 0.7% or less of Ni, the balance composed of Fe, and inevitable impurities, wherein N is contained to satisfy the relation to the C content represented by 0.06≦(C+N)≦0.12, and 1≦N/C, and V is contained to satisfy the relation to the N content represented by 1.5×10−3≦(V×N)≦1.5×10−2 (wherein C, N and V: the contents (mass %) of the elements).

摘要翻译： 本发明提供一种成形性优异且成形后表面质量优异的铁素体系不锈钢板。 具体地说，钢板以质量％计含有C：0.02〜0.06％，Si：1.0％以下，Mn：1.0％以下，P：0.05％以下，S：0.01％以下，S：0.005％ 或更少的Al，0.005％以下的Ti，11〜30％的Cr，0.7％以下的Ni，余量由Fe和不可避免的杂质组成，其中N包含以满足与C 0.06 <=（C + N）<= 0.12，1 <= N / C，并且包含V以满足与1.5×10 -3 <=（VxN）<= 1.5×10 -2 其中C，N和V：元素的含量（质量％））。