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    • 1. 发明授权
    • Steel pipe having high ductility and high strength and process for production thereof
    • 具有高延展性和高强度的钢管及其生产方法
    • US06331216B1
    • 2001-12-18
    • US09214226
    • 1998-12-30
    • Takaaki ToyookaAkira YorifujiMasanori NishimoriMotoaki ItadaniYuji HashimotoTakatoshi OkabeNobuki TanakaTaro KanayamaOsamu FurukimiMasahiko MoritaTakaaki HiraSaiji Matsuoka
    • Takaaki ToyookaAkira YorifujiMasanori NishimoriMotoaki ItadaniYuji HashimotoTakatoshi OkabeNobuki TanakaTaro KanayamaOsamu FurukimiMasahiko MoritaTakaaki HiraSaiji Matsuoka
    • C21D713
    • C21D8/10C21D2201/00C21D2211/005
    • The steel pipe has a structure composed mainly of ferrite or ferrite plus pearlite or ferrite plus cementite. The steel pipe is characterized by grain size not greater than 3 &mgr;m, preferably not greater than 1 &mgr;m, elongation greater than 20%, tensile strength (TS:MPa) and elongation (E1:%) whose product is greater than 10000, and percent ductile fracture greater than 95%, preferably 100%, measured by Charpy impact test on an actual pipe at −100° C. The structure is characterized by C: 0.005-0.03%, Si: 0.01-3.0%, Mn: 0.01-2.0%, and Al: 0.001-0.10% on a weight basis, and is composed of ferrite or ferrite and a secondary phase, with ferrite grains being not greater than 3 &mgr;m and the secondary phase having an areal ratio not more than 30%. A steel pipe stock having the above-mentioned composition is heated at a temperature of (Ac1+50° C.) to 400° C. and subsequently reduced at a rolling temperature of (Ac1+50° C.) to 400° C. such that the cumulative reduction of diameter is greater than 20%. The reducing is preferably performed such that at least one of rolling passes reduces the diameter by more than 6% per pass. The steel pipe will have high ductility and high strength and will be superior in toughness and stress corrosion cracking resistance, if the content of C, Si, Mn, and other alloying elements is limited low and reducing is performed at the temperature specified above. The resulting steel pipe has good fatigue resistance and is suitable for use as line pipe.
    • 钢管具有主要由铁素体或铁素体加珠光体或铁素体和渗碳体组成的结构。 钢管的特征在于,其粒径不大于3μm,优选不大于1μm,伸长率大于20%,拉伸强度(TS:MPa)和伸长率(E1:%)大于10000, 延性断裂大于95%,优选100%,通过夏比冲击试验在-100℃的实际管上测量。该结构的特征在于C:0.005-0.03%,Si:0.01-3.0%,Mn:0.01-2.0 %,Al:0.001-0.10%,由铁素体或铁素体和二次相组成,铁素体晶粒不大于3μm,第二相的面积比不大于30%。 将具有上述组成的钢管坯料在(Ac1 + 50℃)的温度下加热至400℃,随后在(Ac1 + 50℃)的轧制温度下降低至400℃。 使得直径的累积减小大于20%。 优选地进行还原,使得至少一个轧制通道将直径每次通过减少6%以上。 如果C,Si,Mn和其他合金元素的含量低,并且在上述规定的温度下进行还原,则钢管将具有高延展性和高强度,并且在韧性和耐应力腐蚀开裂性方面优异。 所得钢管具有良好的抗疲劳性能,适用于管线管。
    • 3. 发明授权
    • Coated seizure-hardening type cold-rolled steel sheet having excellent aging resistance and method of production thereof
    • 耐老化性优异的涂布硬化型冷轧钢板及其制造方法
    • US06171412B2
    • 2001-01-09
    • US09194533
    • 1998-11-25
    • Saiji MatsuokaMasahiko MoritaOsamu FurukimiTakashi ObaraTetsuya KiyasuYoshio Yamazaki
    • Saiji MatsuokaMasahiko MoritaOsamu FurukimiTakashi ObaraTetsuya KiyasuYoshio Yamazaki
    • C21D800
    • C22C38/14C21D8/02C21D8/0426C21D8/0431C21D8/0436C21D8/0473C22C38/12
    • Disclosed are bake-hardenable sheet steel with good anti-aging property and a method for producing it. While controlling its C, P, S and N contents, the chemical composition of the sheet steel is defined to comprise not larger than 1.0% of Si, not larger than 3.0% of Mn, from 0.01 to 0.20% of Al and from 0.001 to 0.2% of Ti, in terms of % by weight. The value A (=(AIQUENCH−AI)/AIQUENCH) of the sheet steel is defined to be not smaller than 0.4 and the value AIQUENCH thereof to be not smaller than 30; or the ratio of the mean misorientation, M (degree), to the mean grain size, G (&mgr;m), M/G, of the sheet steel is defined to be not smaller than 0.8. The steel may additionally contain from 0.001 to 0.2% of Nb and/or from 0.0001 to 0.0080% of B. While controlling its Si, Mn, S, Al and N contents, the chemical composition of a steel slab is defined to comprise from 0.005 to 0.02% of C, not larger than 0.05% of P and from 0.025 to 0.19% of Nb, with satisfying the condition of 0.7×(C/12)≦Nb/93≦1.2×(C/12) (where C indicates the C content (wt. %), and Nb indicates the Nb content (wt. %)). To produce bake-hardenable sheet steel from it, the slab is heated, hot-rolled at a finishing delivery temperature of from 960 to 650° C., coiled at a temperature of from 750 to 400° C., then cold-rolled to a reduction of from 50 to 95%, and thereafter annealed for recrystallization at a temperature of from 750 to 920° C. The slab may additionally contain B and/or Ti. The invention stably produces bake-hardenable sheet steel on an industrial scale.
    • 公开了具有良好抗老化性能的可烘烤硬化性钢板及其制造方法。 在控制其C,P,S和N含量的同时,将钢板的化学成分定义为不大于1.0%的Si,不大于Mn的3.0%,Al的0.01至0.20%和0.001至 0.2%Ti,以重量%计。 将钢板的值A(=(AIQUENCH-AI)/ AIQUENCH)定义为不小于0.4且其AIQUENCH值不小于30; 或平均取向度M(度)与平均晶粒尺寸G(mum),M / G的比值定义为不小于0.8。 钢可以另外含有0.001-0.2%的Nb和/或0.0001-0.0080%的B。在控制其Si,Mn,S,Al和N含量的同时,钢坯的化学组成定义为包含0.005 至0.02%的C,不大于0.05的P和0.025至0.19%的Nb,满足0.7x(C / 12)<= Nb / 93 <= 1.2×(C / 12)的条件(其中 C表示C含量(重量%),Nb表示Nb含量(重量%))。 为了从其制造可烘烤硬化的钢板,在960〜650℃的最终输送温度下对板坯进行加热,热轧,在750〜400℃的温度下卷取,然后冷轧至 减少50至95%,然后在750至920℃的温度下退火再结晶。板可以另外含有B和/或Ti。 本发明在工业规模上稳定地生产可烘烤硬化钢板。
    • 6. 发明授权
    • Cold rolled steel sheet and method of making
    • 冷轧钢板及其制造方法
    • US6027581A
    • 2000-02-22
    • US935600
    • 1997-09-23
    • Kazunori OsawaMasahiko MoritaOsamu FurukimiTakashi Obara
    • Kazunori OsawaMasahiko MoritaOsamu FurukimiTakashi Obara
    • C21D8/04C21D9/48C22C38/00C22C38/06C22C38/14
    • C21D8/0426C21D9/48C22C38/001C22C38/06C22C38/14
    • Cold rolled steel sheet with excellent deep drawability and excellent anti-aging properties, and manufacturing method. The cold rolled steel sheet comprises about C: above 0.015 to 0.150 wt %, Si: 1.0 wt % or less, Mn: 0.01 to 1.50 wt %, P: 0.10 wt % or less, S: 0.003 to 0.050 wt %, Al: 0.001 to below 0.010 wt %, N: 0.0001 to 0.0050 wt %, Ti: 0.001 wt % or more and Ti(wt %)/[1.5.times.S(wt %)+3.4.times.N(wt %)].ltoreq.about 1.0 and B: about 0.0001 to 0.0050 wt %, during annealing, grain growth is improved; Ti is added to form a nitride and a sulfide to avoid precipitation of fine TiC; B is added to precipitate Boron precipitates (Fe.sub.2 B, Fex(C,B)y) in a cooling the hot rolled steel sheet and in cooling step during annealing after cold rolling; a spherical cementite is precipitated and grown in which the Boron series precipitate is a precipitation site.
    • 具有优异的深冲性和优异的抗老化性能的冷轧钢板及其制造方法。 冷轧钢板的C:大于0.015〜0.150重量%,Si:1.0重量%以下,Mn:0.01〜1.50重量%,P:0.10重量%以下,S:0.003〜0.050重量%,Al: 0.001〜0.010重量%,N:0.0001〜0.0050重​​量%,Ti:0.001重量%以上,Ti(重量%)/ [1.5×S(重量%)+ 3.4×N(重量%)] B:约0.0001〜0.0050重​​量%,退火时晶粒生长提高; 添加Ti以形成氮化物和硫化物以避免细小TiC的沉淀; 加入B以冷却热轧钢板并在冷轧后退火时的冷却步骤中沉淀硼析出物(Fe2B,Fex(C,B)y) 析出并生长球状渗碳体,其中硼系沉淀是沉淀点。
    • 7. 发明申请
    • IMAGE SENSING APPARATUS HAVING ELECTRONIC ZOOM FUNCTION, AND CONTROL METHOD THEREFOR
    • 具有电子变焦功能的图像感应装置及其控制方法
    • US20070296837A1
    • 2007-12-27
    • US11754448
    • 2007-05-29
    • Masahiko Morita
    • Masahiko Morita
    • H04N5/262
    • H04N5/3454H04N5/232H04N5/23245H04N5/23296H04N5/2628
    • In an image sensing apparatus having an image sensing element that senses an object and outputs image data and an electronic zoom function, either a first processing mode or a second processing mode is set and an angle of view is designated. In the first processing mode, the image sensing element is driven by switching reading regions and reading methods of image data from the image sensing element based on the designated angle of view and the image data is read, processed, and the angle of view determined by the switched reading region is changed to the designated angle of view. In the second processing mode, the reading region and the reading method of the image data are fixed and the image data output from the image sensing element is processed, and the angle of view determined by the fixed reading region changed to the designated angle of view.
    • 在具有感测对象的图像感测元件并输出图像数据和电子变焦功能的图像感测装置中,设置第一处理模式或第二处理模式,并且指定视角。 在第一处理模式中,通过基于指定的视角切换读取区域和从图像感测元件读取图像数据的方法来驱动图像感测元件,并且读取,处理图像数据,并且由 切换读取区域改变为指定的视角。 在第二处理模式中,图像数据的读取区域和读取方法是固定的,并且处理从图像感测元件输出的图像数据,并且由固定读取区域确定的视角改变为指定的视角 。