公开(公告)号：US5653825A

公开(公告)日：1997-08-05

申请号：US667645

申请日：1996-06-21

申请人： Masaaki Kohno ,  Atsushi Miyazaki ,  Susumu Satoh ,  Koji Yamato

发明人： Masaaki Kohno ,  Atsushi Miyazaki ,  Susumu Satoh ,  Koji Yamato

IPC分类号： C22C38/00 ,  C22C38/32 ,  C22C38/34

CPC分类号： C22C38/32

摘要： A ferrite-type hot-rolled stainless steel sheet is composed of a selected class of elements in specified amounts. Even when cold rolling and its subsequent process steps are omitted, the hot-rolled steel sheet is sufficiently workable and excellent in surface roughening resistance and high-temperature fatigue properties after working. The steel sheet is easy to produce with a wide range of annealing temperatures.

摘要翻译： 铁素体型热轧不锈钢板由选定种类的元素组成。 即使省略冷轧及其后续的工序，热轧钢板也可以充分地进行加工，表面粗糙化和加工后的耐高温疲劳特性也好。 钢板易于生产，具有广泛的退火温度。

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：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：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：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：US06884388B2

公开(公告)日：2005-04-26

申请号：US10344535

申请日：2001-08-31

申请人： Yoshihiro Ozaki ,  Toshimitsu Nagaya ,  Atsushi Miyazaki ,  Susumu Satoh ,  Mineo Muraki ,  Setsuo Kakihara ,  Toshihiro Kasamo

发明人： Yoshihiro Ozaki ,  Toshimitsu Nagaya ,  Atsushi Miyazaki ,  Susumu Satoh ,  Mineo Muraki ,  Setsuo Kakihara ,  Toshihiro Kasamo

IPC分类号： C21D8/02 ,  C22C38/00 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/26 ,  C22C38/38 ,  C22C38/42 ,  C22C38/58 ,  C22C38/28

CPC分类号： C22C38/26 ,  C21D8/0205 ,  C21D8/0263 ,  C22C38/001 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/38 ,  C22C38/42 ,  C22C38/58

摘要： A martensitic stainless steel sheet which is hard to be softened by tempering caused by heating during the use of a disk brake, can maintain the predetermined hardness, and has excellent punching workability, bending workability before quenching, and a particularly small shear drop, and in which a predetermined hardness after quenching is constantly achieved, in a low carbon martensitic stainless steel sheet used only after quenching. Specifically, the sheet contains, on the basis of mass percent, 0.030% to 0.100% C; 0.50% or less of Si; 1.00% to 2.50% Mn; more than 10.00% to 15.00% Cr; at least one selected from the group consisting of 0.01% to 0.50% Ti, 0.01% to 0.50% V, 0.01% to 1.00% Nb, and 0.01% to 1.00% Zr; N in an amount defined by the following expression, N: 0.005% to (Ti+V)×14/50+(Nb+Zr)×14/90; and the balance being Fe and incidental impurities.

摘要翻译： 在使用盘式制动器时由于加热而难以软化的马氏体不锈钢板可以保持预定的硬度，并且具有优异的冲压加工性，淬火前的弯曲加工性和特别小的剪切降低 在淬火后使用的低碳马氏体系不锈钢板中，不断地实现淬火后的预定硬度。 具体而言，以质量％计含有0.030〜0.100％的C; 0.50％以下的Si; 1.00％至2.50％Mn; 超过10.00％至15.00％的Cr; 选自由0.01％至0.50％Ti，0.01％至0.50％V，0.01％至1.00％Nb和0.01％至1.00％Zr组成的组中的至少一种; N以下列表达式定义：N：0.005％至（Ti + V）x14 / 50 +（Nb + Zr）x14 / 90; 余量为Fe和杂质。

公开(公告)号：US06426039B2

公开(公告)日：2002-07-30

申请号：US09892370

申请日：2001-06-27

申请人： Junichiro Hirasawa ,  Atsushi Miyazaki ,  Mineo Muraki ,  Susumu Satoh

发明人： Junichiro Hirasawa ,  Atsushi Miyazaki ,  Mineo Muraki ,  Susumu Satoh

IPC分类号： C22C3852

CPC分类号： C22C38/06 ,  C22C38/001 ,  C22C38/004 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/52 ,  C22C38/54

摘要： Ferritic stainless steel comprising all three of Co, V, and B, having a Co content of about 0.01 mass % to about 0.3 mass %, a V content of about 0.01 mass % to about 0.3 mass %, and a B content of about 0.0002 mass % to about 0.0050 mass %, and having superior secondary working embrittleness resistance and superior high temperature fatigue characteristics.

公开(公告)号：US06521056B2

公开(公告)日：2003-02-18

申请号：US09911538

申请日：2001-07-25

申请人： Mineo Muraki ,  Junichiro Hirasawa ,  Atsushi Miyazaki ,  Susumu Satoh

发明人： Mineo Muraki ,  Junichiro Hirasawa ,  Atsushi Miyazaki ,  Susumu Satoh

IPC分类号： C22C3844

CPC分类号： C21D8/0205 ,  C21D8/0226 ,  C21D8/0231 ,  C21D8/0236 ,  C21D8/0263 ,  C21D8/0405 ,  C22C38/004 ,  C22C38/06 ,  C22C38/44 ,  C22C38/48

摘要： A ferritic stainless steel sheet which has not only superior high-temperature fatigue characteristics, but also superior workability at room temperatures. The steel sheet contains, by weight percent, C: not more than 0.02%, Si: 0.2 to 1.0%, Mn: not more than 1.5%, Cr: 11.0 to 20.0%, Ni: 0.05 to 2.0%, Mo: 1.0 to 2.0%, Al: not more than 1.0%, Nb: 0.2 to 0.8%, and N: not more than 0.02%, balance essentially Fe, and an aspect ratio (dRD/dTD) of grain size in planes at ¼ and ¾ sheet thickness, seen a direction normal to a sheet surface, in the range of 1.03 to 1.35. The steel sheet has a thickness greater than 0.3 mm but not greater than 2.5 mm, and a yield strength Y.S.≦360 MPa and an r-value≧1.3 at 30° C., and wherein after maintaining the steel sheet at 900° C. for one hour, the Y.S.≧18.0 MPa.

摘要翻译： 铁素体不锈钢板不仅具有优异的高温疲劳特性，而且在室温下也具有优异的加工性。 钢板以重量％计含有C：不大于0.02％，Si：0.2〜1.0％，Mn：1.5％以下，Cr：11.0〜20.0％，Ni：0.05〜2.0％，Mo：1.0〜 2.0％，Al：1.0％以下，Nb：0.2〜0.8％，N：0.02％以下，余量基本上为Fe，¼，¾片的平面的晶粒尺寸比（dRD / dTD） 看到与纸张表面垂直的方向的厚度在1.03至1.35的范围内。 在30℃下，钢板的厚度大于0.3mm但不大于2.5mm，屈服强度YS <= 360MPa，r值> 1.3，其中在将钢板维持在900° C.一小时，YS> = 18.0MPa。

公开(公告)号：US06168756A

公开(公告)日：2001-01-02

申请号：US09431171

申请日：1999-11-01

申请人： Junichiro Hirasawa ,  Atsushi Miyazaki ,  Kazuhide Ishii ,  Susumu Satoh ,  Haruhiko Ishizuka

发明人： Junichiro Hirasawa ,  Atsushi Miyazaki ,  Kazuhide Ishii ,  Susumu Satoh ,  Haruhiko Ishizuka

IPC分类号： C22C3834

CPC分类号： C22C38/50 ,  C22C38/44

摘要： A highly corrosion resistant chromium-containing steel has corrosion resistance and oxidation resistance comparable or superior to those of low Cr-stainless steel (Cr content: 11-13% by weight), and excellent intergranular corrosion resistance not attainable in existing chromium containing steels. However, the steel has such a low Cr content that it is not classified as a stainless steel. A preferred composition on a weight % basis, is: C: 0.015% or less, Si: from more than 1.0% to 2.0%, Mn: 0.5% or less, P: 0.05% or less, S: 0.01 or less, Ni: 0.015% or less, provided that sum of the C content and the N content (C+N): 0.020% or less. Ti: from more than 0.30% to 0.50% in which the contents for Cr, Ti, C and N, that is, [Cr], [Ti], [C] and [N] satisfying the following relation: [Ti]/([C]+[N])≧64−4×[Cr], balance of Fe and incidental impurities.

摘要翻译： 高耐腐蚀性含铬钢具有与低Cr不锈钢（Cr含量：11〜13重量％）相当或优于其耐蚀性和抗氧化性，并且在现有的含铬钢中不能获得优异的晶间耐腐蚀性。 然而，钢具有这样的低Cr含量，不被分类为不锈钢。 以重量％为基准的优选组成为：C：0.015％以下，Si：1.0％〜2.0％，Mn：0.5％以下，P：0.05％以下，S：0.01以下，Ni： ：0.015％以下，条件是C含量和N含量（C + N）之和为0.020％以下。 Ti：大于0.30％〜0.50％，其中Cr，Ti，C和N，即[Cr]，[Ti]，[C]和[N]的含量满足以下关系：[Ti] / （[C] + [N]）> = 64-4x [Cr]，余量为Fe和杂质。

公开(公告)号：US06835466B2

公开(公告)日：2004-12-28

申请号：US10311236

申请日：2002-12-17

申请人： Kyoko Fujimoto ,  Makoto Shimura ,  Yoichi Tobiyama ,  Susumu Satoh

发明人： Kyoko Fujimoto ,  Makoto Shimura ,  Yoichi Tobiyama ,  Susumu Satoh

IPC分类号： B32B1500

CPC分类号： C23C2/26 ,  C23C2/28 ,  Y10S428/935 ,  Y10T428/12799

摘要： An alloyed hot-dip galvanized steel sheet is obtained by forming a hot-dip galvanized layer on the surface of the steel sheet and then alloying the steel sheet. The steel sheet exhibits a potential of −850 mV or less when it is immersed in a zinc sulfate-sodium chloride electrolyte. Alternatively, when it is electrolyzed according to constant potential electrolysis process in a zinc sulfate-sodium chloride electrolyte at a potential in a range from −940 mV to −920 mV, the quantity of electricity consumed is less than or equal to 0.5 C/cm2. The steel sheet exhibits excellent processability and particularly excellent sliding property.

摘要翻译： 通过在钢板的表面上形成热镀锌层，然后使钢板合金化，得到合金化的热浸镀锌钢板。 该钢板浸渍在硫酸锌 - 氯化钠电解液中时，电位为-850mV以下。 或者，当在电位范围为-940mV至-920mV的硫酸锌 - 氯化钠电解液中根据恒定电位电解方法进行电解时，消耗的电量小于或等于0.5C / cm <2>。 钢板表现出优异的加工性能和特别优异的滑动性能。