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51. 发明授权

US07572407B2 Martensitic stainless steel sheet and method for making the same 有权
标题翻译：马氏体不锈钢板及其制造方法
公开(公告)号：US07572407B2
公开(公告)日：2009-08-11
申请号：US10328598
申请日：2002-12-23
申请人： Junichiro Hirasawa , Takumi Ujiro , Osamu Furukimi
发明人： Junichiro Hirasawa , Takumi Ujiro , Osamu Furukimi
IPC分类号： C22C38/46 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54
CPC分类号： C22C38/44 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C22C38/002 , C22C38/004 , C22C38/06
摘要： A martensitic stainless steel sheet having superior corrosion resistance, toughness at the weld zones, and workability. The composition of the steel sheet is, on a mass basis: less than about 0.02% of carbon; about 1.0% or less of silicon; less than about 1.5% of manganese; about 0.04% or less of phosphorus; about 0.01% or less of sulfur; about 0.1% or less of aluminum; about 1.5% or more and less than about 4.0% of nickel; about 11% or more and less than about 15% of chromium; about 0.5% or more and less than about 2.0% of molybdenum; and less than about 0.02% of nitrogen, the balance being iron and unavoidable impurities, wherein 15.0%≦[Cr]+1.5×[Mo]+1.2×[Ni]≦20.0%; [C]+[N] 3.0%; and 8.0%≦72×[C]+40×[N]+3×[Si]+2×[Mn]+4×[Ni]+[Mo]≦18.0%.
摘要翻译：具有优异的耐腐蚀性，焊接区韧性和可加工性的马氏体不锈钢板。钢板的组成按质量计小于约0.02％的碳; 约1.0％以下的硅; 小于约1.5％的锰; 约0.04％以下的磷; 约0.01％以下的硫; 约0.1％以下的铝; 约1.5％以上且小于约4.0％的镍; 约11％以上且小于约15％的铬; 约0.5％以上且小于约2.0％的钼; 和小于约0.02％的氮，余量为铁和不可避免的杂质，其中15.0％<= [Cr] + 1.5x [Mo] + 1.2x [Ni] <= 20.0％; [C] + [N] <0.030％ [Ni] + 0.5x（[Mn] + [Mo]）+ 30x [C]> 3.0％和8.0％<= 72×[C] + 40×[N] + 3×[Si] + 2x [Mn] + 4x [Ni] + [Mo] = 18.0％。

52. 发明授权

US07429302B2 Stainless steel sheet for welded structural components and method for making the same 有权
标题翻译：焊接结构件用不锈钢板及其制造方法
公开(公告)号：US07429302B2
公开(公告)日：2008-09-30
申请号：US10395475
申请日：2003-03-24
申请人： Junichiro Hirasawa , Takumi Ujiro , Osamu Furukimi
发明人： Junichiro Hirasawa , Takumi Ujiro , Osamu Furukimi
IPC分类号： C22C38/40 , C21D8/02
CPC分类号： C22C38/004 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/44 , Y10T428/12958
摘要： A structural hot-rolled or cold-rolled stainless steel sheet having improved intergranular corrosion resistance and toughness at the welding heat affected zone and further having low strength and high elongation. The composition of the steel sheet contains less than about 0.008 mass percent of C; about 1.0 mass percent or less of Si; about 1.5 mass percent or less of Mn; about 11 to about 15 mass percent of Cr; more than about 1.0 mass percent and about 2.5 mass percent or less of Ni; less than about 0.10 mass percent of Al; about 0.009 mass percent or less of N; about 0.04 mass percent or less of P; about 0.01 mass percent or less of S; and the balance being Fe and incidental impurities. These contents satisfy the expressions: (Cr)+1.2×(Ni)≧15.0; (Ni)+0.5×(Mn)+30×(C)≦3.0; (C)+(N)≦0.015; and (Cr)−(Mn)−1.7×(Ni)−27×(C)−100×(N)≧9.0.
摘要翻译：一种结构热轧或冷轧不锈钢板，其在焊接热影响区具有改善的晶间耐腐蚀性和韧性，并且还具有低强度和高伸长率。钢板的组成含有小于约0.008质量％的C; 约1.0质量％以下的Si; 约1.5质量％以下的Mn; 约11〜约15质量％的Cr; 大于约1.0质量％和约2.5质量％以下的Ni; 小于约0.10质量％的Al; 约0.009质量％以下的N; 约0.04质量％以下的P; 约0.01质量％以下的S; 余量为Fe和杂质。这些含量满足以下表达式：（Cr）+ 1.2×（Ni）> = 15.0; （Ni）+ 0.5x（Mn）+ 30x（C）<= 3.0; （C）+（N）<= 0.015; 和（Cr） - （Mn）-1.7x（Ni）-27x（C）-100x（N）> = 9.0。

53. 发明申请

US20050241737A1 Cr steel for structural use and method for producing the same 审中-公开
标题翻译：结构用Cr钢及其制造方法
公开(公告)号：US20050241737A1
公开(公告)日：2005-11-03
申请号：US10523880
申请日：2003-08-28
申请人： Takumi Ujiro , Hiroki Ota , Osamu Furukimi , Takashi Shiokawa
发明人： Takumi Ujiro , Hiroki Ota , Osamu Furukimi , Takashi Shiokawa
IPC分类号： C22C38/00 , C22C38/18 , C22C38/48
CPC分类号： C22C38/004 , C21D6/002 , C21D8/0278 , C21D2261/00 , C22C38/02 , C22C38/04 , C22C38/18
摘要： To provide structural Cr-containing steel with excellent low-temperature toughness and impact toughness, with low costs as compared with stainless steel, and with sufficient corrosion resistance. Specifically, this is structural Cr-containing steel and a manufacturing method thereof, wherein the Cr-containing steel contains C of 0.002 to 0.02%; N of 0.002 to 0.02%; Si of 0.05 to 1.0%; Mn of 0.05 to 1.0%; P of 0.04% or less; S of 0.02% or less; Al of 0.001 to 0.1%; and Cr of 6.0 to 10.0%, further may contain Cu of 0.1 to 1.0%, further may contain at least one of: Ni of 0.1 to 1.0%; and Mo of 0.1 to 1.0%, and further may contain at least one of: Nb of 0.005 to 0.10%; and V of 0.005 to 0.20%, the balance are formed of Fe and unavoidable impurities, and the Cr-concentration in the surface layer of the steel is equal to or more than the value wherein 1% is subtracted from the Cr-concentration within the steel.
摘要翻译：提供具有优异的低温韧性和冲击韧性的结构含Cr钢，与不锈钢相比成本低，具有足够的耐腐蚀性。具体地说，这是含Cr的结构钢及其制造方法，其中含Cr的钢含有0.002-0.02％的C; N为0.002〜0.02％; Si为0.05〜1.0％; Mn为0.05〜1.0％ P为0.04％以下; S为0.02％以下; Al为0.001〜0.1％; 和6.0〜10.0％的Cr，还可以含有0.1〜1.0％的Cu，还可以含有0.1〜1.0％的Ni中的至少一种。 Mo为0.1〜1.0％，进一步含有Nb：0.005〜0.10％中的至少一种。 V为0.005〜0.20％，余量由Fe和不可避免的杂质形成，钢的表层的Cr浓度等于或大于其中的Cr浓度1％的值钢。

54. 发明授权

US6149744A Method of making austenitic stainless steel sheet 失效
标题翻译：制奥氏体不锈钢板的方法
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。

55. 发明授权

US5350559A Ferrite steel which excels in high-temperature strength and toughness 失效
标题翻译：铁素体钢具有高温强度和韧性
公开(公告)号：US5350559A
公开(公告)日：1994-09-27
申请号：US106423
申请日：1993-08-13
申请人： Astushi Miyazaki , Takumi Ujiro , Fusao Togashi
发明人： Astushi Miyazaki , Takumi Ujiro , Fusao Togashi
IPC分类号： C22C38/00 , C22C38/26 , C22C38/30 , C22C38/52
CPC分类号： C22C38/26 , C22C38/30
摘要： A ferrite steel suitable for use as the material of a part which is used at high and which is required to have high toughness at weld heat affected zones. The ferrite steel has a composition which contains C: not more than 0.02 wt %, Si: not more than 2.0 wt %, Mn: not more than 1.0 wt %, Cr: not less than 6.0 wt % but not more than 23.0 wt %, Ni: not more than 1.0 wt %, Nb: not less than 0.4 wt % but not more than 0.65 wt %, Co: not less than 0.01 wt % but not more than 2.0 wt %, Al: not more than 0.5 wt %, N: not more than 0.03 wt % and the balance substantially Fe and incidental inclusions.
摘要翻译：一种铁素体钢，适用于在高温下使用且需要在焊接热影响区域具有高韧性的部件的材料。铁素体钢具有以下组成：C：0.02重量％以下，Si：2.0重量％以下，Mn：1.0重量％以下，Cr：6.0重量％以上且23.0重量％以下，Ni：1.0重量％以下，Nb：0.4重量％以上0.65重量％以下，Co：0.01重量％以上2.0重量％以下Al：0.5重量％以下，，N：0.03重量％以下，余量基本上为Fe和附带的夹杂物。

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