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    • 3. 发明授权
    • Method of forming oxide-passivated film, ferrite system stainless steel,
fluid feed system and fluid contact component
    • 形成氧化物钝化膜,铁氧体系不锈钢,流体进料系统和流体接触部件的方法
    • US5951787A
    • 1999-09-14
    • US666312
    • 1996-10-15
    • Tadahiro OhmiShinji Miyoshi
    • Tadahiro OhmiShinji Miyoshi
    • C23C16/02C21D1/76C22C38/00C22C38/40C23C8/02C23C8/18C23C16/40C23C8/04
    • C23C8/02C23C8/18
    • A passive film forming method enabling formation of a passivated-oxide film having a layer made of chromium oxide in its outermost surface without conducting composite electric polishing. Also disclosed is a ultra-high purity fluid feed system, processing apparatus, and a fluid contracting component, each of which is free of metal contamination and is excellent in the gas discharge characteristics, non-catalytic characteristics and corrosion resistance. The surface of the ferrite-based stainless steel containing Mn by not more than 0.03 wt %, Cu by not more than 0.05 wt %, C by not more than 0.01 wt %, and Al by not more 0.01 wt % is electrolytically polished, then moisture is removed from the surface of the stainless steel by making the steel in an inert gas, then a passivated oxide film having a layer made of non-crystalline chromium oxide is formed on the outermost surface thereof by executing heat treatment in a temperature range of 300.degree. C. to 600.degree. C. in a mixture gas atmosphere of inert gas and 500 ppb to 2% H.sub.2 O gas.
    • PCT No.PCT / JP94 / 02255 Sec。 371日期1996年10月15日 102(e)日期1996年10月15日PCT 1994年12月27日PCT PCT。 出版物WO95 / 18247 日期:1995年7月6日在无需进行复合电抛光的情况下,能够在其最表面形成具有由氧化铬构成的层的钝化氧化膜的钝化膜形成方法。 还公开了一种超高纯度流体供给系统,处理装置和流体收缩部件,其各自没有金属污染,并且气体排放特性,非催化特性和耐腐蚀性优异。 电解抛光含Mn不大于0.03重量%,不大于0.05重量%,不大于0.01重量%,不超过0.01重量%的Al和不超过0.01重量%的铁素体不锈钢的表面,然后 通过将钢制成惰性气体而从不锈钢的表面除去水分,然后通过在其最外表面上形成具有由非结晶性氧化铬制成的层的钝化氧化物膜,在其最外表面上进行热处理, 在惰性气体和500ppb至2%H 2 O气体的混合气体气氛中在300℃至600℃。
    • 7. 发明授权
    • Welding method for forming chromium oxide passivated film at welded
portion, welding apparatus, and process apparatus
    • 在焊接部分形成氧化铬钝化膜的焊接方法,焊接装置和处理装置
    • US5597109A
    • 1997-01-28
    • US296542
    • 1994-08-26
    • Tadahiro OhmiShinji MiyoshiYasumitsu Mizuguchi
    • Tadahiro OhmiShinji MiyoshiYasumitsu Mizuguchi
    • B23K9/035B23K9/16B23K28/00B23K35/38C23C8/10C23C22/00B23K31/02
    • B23K9/164B23K35/383C23C8/10B23K2201/06
    • The invention has as an object thereof to provide a welding method which is capable of forming an oxide passivated film, which is corrosion resistant, non-catalytic, and has an extremely small amount of released gasses, chiefly on the welded portion or in the vicinity thereof during the welding process. During the welding process, a gas in which 800 ppm.about.2.5% of moisture is contained in an inert gas is caused to flow, and a passivated film having chromium oxide as a chief component thereof is formed on the surface of the welded portion. The welding method comprises a welding process and a passivation process; in the passivation process, a gas in which 1000 ppm.about.2.5% of moisture is contained in an inert gas is employed. The apparatus is provided with a system for generating moisture, a system for supplying an inert gas or a mixed gas in which hydrogen is added to an inert gas as a back shield gas, a system for supplying a back shield gas comprising an inert gas containing moisture, and a mechanism for supplying these gasses to the portion to be welded via switching of both systems.
    • 本发明的目的在于提供一种焊接方法,其能够形成耐腐蚀,不催化,并且具有极少量的释放气体的氧化物钝化膜,主要在焊接部分或附近 在焊接过程中。 在焊接过程中,在惰性气体中含有800ppm的水分含量为2.5%的气体流动,在焊接部分的表面上形成具有氧化铬作为主要成分的钝化膜。 焊接方法包括焊接工艺和钝化工艺; 在钝化过程中,采用在惰性气体中含有1000ppm的差异2.5%的气体的气体。 该装置设置有用于产生水分的系统,用于供应惰性气体的系统或其中将氢气作为背面保护气体添加到惰性气体中的混合气体的系统,用于提供包含含有 湿气,以及通过两个系统的切换将这些气体供给到待焊接部分的机构。
    • 8. 发明授权
    • Exhaust gas particulate purifying process for internal combustion engine
    • 内燃机废气颗粒净化工艺
    • US5458673A
    • 1995-10-17
    • US157474
    • 1993-11-26
    • Akikazu KojimaMitsuo InagakiShinji MiyoshiFumiaki ArikawaTakayuki Takeuchi
    • Akikazu KojimaMitsuo InagakiShinji MiyoshiFumiaki ArikawaTakayuki Takeuchi
    • B01D46/24B01D46/48F01N3/023F01N3/027F01N3/031F01N3/32F01N9/00F01N13/04B01D29/66
    • F01N9/002F01N13/011F01N3/0233F01N3/027F01N3/031F01N2240/36F01N3/32Y02T10/47Y10S55/30
    • For regenerating an exhaust gas particulate collecting filter, there is provided an exhaust gas particulate purifying process in which damage to the filter caused by a thermal action can be prevented and further electric power can be saved when an electric current supply to an electric heater attached to the filter is controlled. In the filter container (4), an electric heater (21) is provided on an end surface of the filter on an upstream side with respect to a regenerating gas flow, or provided at a position close to the end surface. Also, a temperature sensor (22) for measuring a temperature of the filter is provided inside the filter or at a position close to an end surface of the filter opposite to the aforementioned end surface. Further, there is provided a first controller (13) for determining an appropriate current amount to be supplied to the electric heater and also for determined an electric power reducing pattern used in the case of stoppage of power supply, in accordance With the filter preheating temperature immediately before the start of regeneration detected by the temperature sensor (22). A second controller ( 17) controls a current amount supplied to the electric heater (21) in accordance with a command given by the first controller (13).
    • 为了再生废气微粒收集过滤器,提供了一种废气微粒净化过程,其中可以防止由热作用引起的过滤器损坏,并且当向连接到 过滤器被控制。 在过滤器容器(4)中,电动加热器(21)相对于再生气体流在上游侧设置在过滤器的端面上,或设置在靠近端面的位置。 此外,用于测量过滤器的温度的温度传感器(22)设置在过滤器的内部或靠近与前述端面相反的过滤器端面的位置处。 此外,提供了一种第一控制器(13),用于根据过滤器预热温度来确定要供应到电加热器的适当电流量,并且还确定在停止供电的情况下使用的减电模式 在由温度传感器(22)检测到的再生开始之前。 第二控制器(17)根据第一控制器(13)给出的命令来控制提供给电加热器(21)的电流量。