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1. 发明授权

US06174386B1 NaOH evaporator comprising at least one component formed by a high strength stainless steel 有权
标题翻译： NaOH蒸发器包括由高强度不锈钢形成的至少一个部件
公开(公告)号：US06174386B1
公开(公告)日：2001-01-16
申请号：US09249048
申请日：1999-02-12
申请人： Anna Delblanc-Bauer , Pasi Kangas , Magnus Nyström
发明人： Anna Delblanc-Bauer , Pasi Kangas , Magnus Nyström
IPC分类号： C22C3844
CPC分类号： B23K35/3086 , C22C38/40 , C22C38/44 , C22C38/58
摘要： The invention relates to the use of a ferritic-austenitic stainless steel alloy as construction material for components in the process industry, which components can be foreseen to come into direct contact with caustic soda.
摘要翻译：本发明涉及铁素体 - 奥氏体不锈钢合金作为加工工业中组分的结构材料的用途，该组分可预见与苛性钠直接接触。

2. 发明申请

US20070089810A1 Duplex stainless steel alloy for use in seawater applications 审中-公开
标题翻译：用于海水应用的双相不锈钢合金
公开(公告)号：US20070089810A1
公开(公告)日：2007-04-26
申请号：US10547572
申请日：2004-02-19
申请人： Ann Sundstrom , Pasi Kangas
发明人： Ann Sundstrom , Pasi Kangas
IPC分类号： C22C38/44
CPC分类号： C22C38/44 , C22C38/001 , C22C38/04 , C22C38/52
摘要： The present invention relates to a stainless steel alloy, more precisely a duplex stainless steel alloy having ferritic-austenitic matrix and having high corrosion resistance in combination with good structural stability and hot-workability, in particular a duplex stainless steel having a ferritic content of 40-65% and a well-balanced composition, which gives the material corrosion properties making it more suitable for use in chloride-containing environments than what has been found possible previously. The material according to the present invention has, in view of the high alloy content thereof, extraordinarily good workability, in particular hot-workability, and should thereby be very suitable to be used for, for instance, the manufacture of bars: pipes, such as welded and weld less pipes, weld material, construction parts, such as, for instance, flanges and couplings. These objects are met according to the present invention with duplex stainless alloy, which contain (in % by weight): C more than 0 and up to max 0.03 Si up to max 0.5 Mo 0-3.0 20 Cr 24.0-30.0 Ni 4.9-10.0 Mo 3.0-5.0 N 0.28-0.5 B 0-0.0030 25 S up to max 0.010 Co 0-3.5 W 0-3.0% Cu 0-2.0 Ru 0-0.3 3 0 Al 0-0.03 Ca 0-0.010%, balance Fe together with inevitable contaminations.
摘要翻译：本发明涉及一种不锈钢合金，更具体地说是一种具有铁素体 - 奥氏体系的双相不锈钢合金，具有良好的耐腐蚀性和良好的结构稳定性和热加工性，特别是铁素体含量为40的双相不锈钢 -65％和均衡的组合物，这提供了材料腐蚀性能，使其更适合在含氯化物环境中使用，而不是以前发现的。鉴于其高合金含量，鉴于其高合金含量，具有非常好的可加工性，特别是热加工性，因此非常适合用于例如制造棒：管，如作为焊接和焊接较少的管道，焊接材料，建筑部件，例如法兰和联接器。根据本发明，符合本发明的这些目的具有双重不锈钢合金，其含有（以重量％计）：C大于0和高达最大0.03Si直到最大0.5 Mo 0-3.0 20 Cr 24.0-30.0 Ni 4.9-10.0 Mo 3.0-5.0 N 0.28-0.5 B 0-0.0030 25 S最大0.010 Co 0-3.5 W 0-3.0％Cu 0-2.0 Ru 0-0.3 3 0 Al 0-0.03 Ca 0-0.010％，余量为Fe 有不可避免的污染。

3. 发明申请

US20080138232A1 Duplex Stainless Steel 审中-公开
标题翻译：双相不锈钢
公开(公告)号：US20080138232A1
公开(公告)日：2008-06-12
申请号：US11666903
申请日：2005-11-04
申请人： Pasi Kangas , Karin Jakobsson
发明人： Pasi Kangas , Karin Jakobsson
IPC分类号： C22C38/52 , C22C38/44
CPC分类号： C22C38/44 , B23K35/3053 , C21D2211/001 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/42
摘要： A duplex stainless steel alloy which contains in weight %: Cr 25-35%, Ni 4-10%, Mo 1-6%, N 0.3-0.6%, Mn greater than 0-3%, Si max 1.0%, C max 0.06%, Cu and/or W and/or Co 0.1-10%, W 0.1-5%, balance Fe and normally occurring impurities wherein the ferrite content is 30-70%. The alloy has a yield point in tension being min 760 MPa.
摘要翻译：双相不锈钢合金，其重量％：Cr 25-35％，Ni 4-10％，Mo 1-6％，N 0.3-0.6％，Mn大于0-3％，Si最大1.0％，C max 0.06％，Cu和/或W和/或Co为0.1-10％，W为0.1-5％，余量为Fe和通常存在的杂质，其中铁素体含量为30-70％。该合金的拉伸屈服点最小为760MPa。

4. 发明授权

US06689231B1 Use of stainless steel alloy as umbilical tubes in seawater environment 有权
标题翻译：在海水环境中使用不锈钢合金作为脐带管
公开(公告)号：US06689231B1
公开(公告)日：2004-02-10
申请号：US09598241
申请日：2000-06-21
申请人： Pasi Kangas
发明人： Pasi Kangas
IPC分类号： C22C3844
CPC分类号： C21D8/105 , C22C38/44 , F16L9/19
摘要： The invention relates to a ferrite-austenitic alloy and its use, the alloy has a composition with a mixture defined as: C maximum 0.05%, Si maximum 0.8%, Mn 0.30-1.5%, Cr 28.0-30.0%, Ni 5.80-7.40%, Mo 2.00-2.50%, N 0.30-0.40%, Cu maximum 1.0%, W maximum 2.0%, S maximum 0.010%, 30-70% ferrite and the balance austenite for tubes filled with hydraulic fluid, as transport tubes for solutions for chemical injection, or another uses in the application of umbilicals.
摘要翻译：本发明涉及一种铁素体 - 奥氏体合金及其用途，该合金的组成为：C最大0.05％，Si最大0.8％，Mn 0.30-1.5％，Cr 28.0-30.0％，Ni 5.80-7.40 ％，Mo 2.00-2.50％，N 0.30-0.40％，Cu最大1.0％，W最大2.0％，S最大0.010％，铁素体30-70％，填充液压油的管的平衡奥氏体作为溶液的输送管用于化学注射，或用于脐带的另一种用途。

5. 发明授权

US07081173B2 Super-austenitic stainless steel 失效
公开(公告)号：US07081173B2
公开(公告)日：2006-07-25
申请号：US10301736
申请日：2002-11-22
申请人： Babak Bahar , Johan Frodigh , Pasi Kangas , Ulf Kivisäkk
发明人： Babak Bahar , Johan Frodigh , Pasi Kangas , Ulf Kivisäkk
IPC分类号： C22C38/18
CPC分类号： C22C38/44 , C22C38/005 , C22C38/42 , C22C38/58
摘要： A super-austenitic stainless steel alloy with a composition, balanced in such a way that products made from the alloy fulfill high requirements on a combination of high corrosion resistance, especially in inorganic and organic acids and mixtures thereof, good general corrosion resistance, good structure stability as well as improved mechanical properties in combination with good workability, in particular in tubes, especially seamless tubes and seam welded tubes for application in these environments and with following composition, in weight-percent: Cr23.0–30.0 Ni25.0–35.0 Mo 2.0–6.0 Mn 1.0–6.0 N 0–0.4 Cup to 0.05 Siup to 1.0 Sup to 0.02 Cuup to 3.0 W 0–6.0 up to 2.0 of one or more element of the group Mg, Ce, Ca, B, La, Pr, Zr, Ti, Nd, and the balance being Fe and normally occurring impurities and steel making additions.

6. 发明授权

US06312532B1 Ferritic-austenitic steel alloy 有权
标题翻译：铁素体 - 奥氏体钢合金
公开(公告)号：US06312532B1
公开(公告)日：2001-11-06
申请号：US09605981
申请日：2000-06-29
申请人： Pasi Kangas
发明人： Pasi Kangas
IPC分类号： C22C3842
CPC分类号： C22C38/42 , C21D2211/001 , C21D2211/005 , C22C38/44 , C22C38/58
摘要： A duplex stainless steel alloy has been developed, which contains in weight-%: C maximum 0.05 Si maximum 0.8 Mn 0.3-4 Cr 27-35 Ni 3-10 Mo 0-3 N 0.30-0.55 Cu 0.5-3.0 W 2.0-5.0 S maximum 0.010 balance Fe and normally occurring impurities and additions. The content of Fe is 30-70 volume-%. The steel alloy well suited in those chloride environments, where demands are made on good resistance to crevice corrosion. A relatively high content of W has at the same time given a good effect on both the pitting- and crevice corrosion properties.
摘要翻译：已开发出双相不锈钢合金，其重量 - ％：C最大0.05Si最大0.8Mn 0.3-4Cr 27-35Ni 3-10Mo 0-3N 0.30-0.55Cu 0.5-3.0W 2.0-5.0S最大0.010％ Fe和正常发生的杂质和添加物。 Fe含量为30-70体积％。该钢合金非常适合那些氯化物环境，需要制造良好的抗缝隙腐蚀性能。相对较高的W含量同时对点腐蚀和缝隙腐蚀性能都有很好的影响。

7. 发明授权

US06749697B2 Duplex stainless steel 有权
标题翻译：双相不锈钢
公开(公告)号：US06749697B2
公开(公告)日：2004-06-15
申请号：US09796442
申请日：2001-03-02
申请人： Örjan Bergström , Pasi Kangas , Mattias Klockars , Guocai Chai
发明人： Örjan Bergström , Pasi Kangas , Mattias Klockars , Guocai Chai
IPC分类号： C22C3844
CPC分类号： C22C38/44 , C22C38/58
摘要： The present invention relates to a duplex stainless steel alloy with austenite-ferrite structure, which in hot extruded and annealed finish shows high strength, good corrosion resistance, as well as good weldability which is characterized in that the alloy contains in weight-% max 0.05% C, 0-2.0% Si 0-3.0% Mn, 25-35% Cr, 4-10% Ni, 2-6% Mo, 0.3-0.6% N, as well as Fe and normally occurring impurities and additions, whereby the content of ferrite is 30-70%.
摘要翻译：本发明涉及一种具有奥氏体 - 铁素体结构的双相不锈钢合金，其在热挤压和退火处理中表现出高强度，良好的耐腐蚀性以及良好的可焊性，其特征在于该合金的重量％最大0.05 ％C，0-2.0％Si 0-3.0％Mn，25-35％Cr，4-10％Ni，2-6％Mo，0.3-0.6％N，以及Fe和通常存在的杂质和添加物，其中铁素体含量为30-70％。

8. 发明授权

US06451133B1 Stainless steel for use in seawater applications 有权
标题翻译：用于海水应用的不锈钢
公开(公告)号：US06451133B1
公开(公告)日：2002-09-17
申请号：US09807931
申请日：2001-06-29
申请人： Johan Frodigh , Pasi Kangas
发明人： Johan Frodigh , Pasi Kangas
IPC分类号： C22C3822
CPC分类号： C22C38/58 , C22C38/44
摘要： A duplex ferritic-austenitic stainless steel alloy provided for seawater applications includes, in weight %: C maximum 0.05; Si maximum 0.8; Mn 0.03-4; Cr 28-35; Ni 3-10%, Mo 1.0-4.0; N 0.2-0.6; Cu maximum 1.0; W maximum 2.0; S maximum 0.010; Ce maximum 0.2; and the balance Fe together with normally occurring impurities and additives, wherein the ferritic content is 30-70 volume %, the alloy composition has a PRE-value higher than 42, and the PRE-value is at least 40 in both the ferritic and austenitic phases. A method is also provided which includes: providing a duplex ferritic-austenitic stainless steel alloy with the above-noted composition, forming a component with the alloy, and contacting the component with seawater. In preferred embodiments, the component comprises at least one of tubes, bars, heavy castings, forging, plates, wire or strip.
摘要翻译：提供用于海水应用的双相铁素体 - 奥氏体不锈钢合金包括重量％：C最大0.05; Si最大0.8; Mn 0.03-4; Cr 28-35; Ni 3-10％，Mo 1.0-4.0; N 0.2-0.6; 铜最大1.0; W最大2.0; S最大0.010; Ce最大0.2; 余量为Fe，通常存在的杂质和添加剂，其中铁素体含量为30-70体积％，合金组成的PRE值高于42，PRE值在铁素体和奥氏体中都至少为40 阶段还提供了一种方法，其包括：提供具有上述组成的双相铁素体 - 奥氏体不锈钢合金，与合金形成组分，并使组分与海水接触。在优选实施例中，该部件包括管，棒，重铸件，锻造，板，线或带中的至少一个。

9. 发明授权

US5582656A Ferritic-austenitic stainless steel 失效
标题翻译：铁素体 - 奥氏体不锈钢
公开(公告)号：US5582656A
公开(公告)日：1996-12-10
申请号：US262942
申请日：1994-06-21
申请人： Pasi Kangas , Bertil Walden , Goran Berglund , Michael Nicholls
发明人： Pasi Kangas , Bertil Walden , Goran Berglund , Michael Nicholls
IPC分类号： B23K35/30 , C22C38/00 , C22C38/44 , C22C38/58
CPC分类号： C22C38/44 , B23K35/3086
摘要： A duplex stainless steel alloy has been provided which contains in % by weight:--C max. 0.05--Si max. 0.8--Mn 0.3-4--Cr 28-35--Ni 3-10--Mo 1.0-4.0--N 0.2-0.6--Cu max. 1.0--W max. 2.0--S max 0.010--Ce 0-0.2the remainder being Fe and normally occurring impurities and additives. The ferrite content is 30-70% by volume, balance austenite. The steel alloy is very suitable in the environments that exist at the production of urea, in which it may advantageously replace the austenitic steels used so far.
摘要翻译：提供了一种双相不锈钢合金，其含有以重量％计：-C max。 0.05 -Si最大 0.8-Mn 0.3-4 -Cr 28-35 -Ni 3-10 -Mo 1.0-4.0 -N 0.2-0.6 -Cu max。最大1.0-W 2.0 -S max 0.010 -Ce 0-0.2其余为Fe和通常出现的杂质和添加剂。铁素体含量为30-70％体积，平衡奥氏体。该钢合金非常适合在生产尿素的环境中，其中可有利地替代目前使用的奥氏体钢。

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