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    • 2. 发明授权
    • Heat resistant steel
    • 耐热钢
    • US06514359B2
    • 2003-02-04
    • US09818830
    • 2001-03-28
    • Kaori Kawano
    • Kaori Kawano
    • C22C3824
    • C22C38/22C21D2211/003C21D2211/004C22C38/24C22C38/26
    • A heat resistant steel which comprises, by mass %, C: 0.01-0.25%, Cr: 0.5-8%, V: 0.05-0.5%, Si: not more than 0.7%, Mn: not more than 1%, Mo: not more than 2.5%, W: not more than 5%, Nb: not more than 0.2%, N: not more than 0.1%, Ti: not more than 0.1%, Ta: not more than 0.2%, Cu: not more than 0.5%, Ni: not more than 0.5%, Co: not more than 0.5%, B: not more than 0.1%, Al: not more than 0.05%, Ca: not more than 0.01%, Mg: not more than 0.01%, Nd: not more than 0.01%, with Fe and impurities accounting for the balance, the chemical composition of which satisfies the relations C−0.06×(Mo+0.5 W)≧0.01 and Mn+0.69×log(Mo+0.5 W+0.01)≦0.60 wherein the symbols for elements represent the contents, on the % by mass basis, of the elements in the steel, and in which, among precipitates inside grains, precipitates having an average diameter of not more than 30 nm are present at a density of not less than 1/&mgr;m3.
    • 一种耐热钢,以质量%计含有C:0.01-0.25%,Cr:0.5-8%,V:0.05-0.5%,Si:不大于0.7%,Mn:不大于1%,Mo: 不大于2.5%,W:不大于5%,Nb:不大于0.2%,N:不大于0.1%,Ti:不大于0.1%,Ta:不大于0.2%,Cu:不大于 0.5%以下,Ni:不大于0.5%,Co:不大于0.5%,B:不大于0.1%,Al:不大于0.05%,Ca:不大于0.01%,Mg:不大于0.01 %,Nd:不大于0.01%,Fe和杂质占平衡,其化学成分满足关系C-0.06x(Mo + 0.5W)> 0.01和Mn + 0.69xlog(Mo + 0.5W +0.01)<= 0.60其中元素符号表示钢中的元素的质量%,其中在晶粒内的析出物中,平均直径不大于30nm的析出物为 以不小于1 / mum3的密度存在。
    • 3. 发明授权
    • Ferritic heat-resisting steel
    • 铁素体耐热钢
    • US06712913B2
    • 2004-03-30
    • US10358330
    • 2003-02-05
    • Hiroyuki HirataKazuhiro Ogawa
    • Hiroyuki HirataKazuhiro Ogawa
    • C22C3824
    • C22C38/004C21D6/002C21D9/50C21D2211/004C22C38/001C22C38/002C22C38/02C22C38/04C22C38/22C22C38/24C22C38/26
    • A ferritic heat-resisting steel that shows a slight decrease in creep strength at the heat affected zone of the welded joint. The steel is characterized by consisting of, by mass %, C: less than 0.05%, Si: not more than 1.0%, Mn: not more than 2.0%, P: not more than 0.030%, S: not more than 0.015%, Cr: 7-14%, V: 0.05-0.40%, Nb: 0.01-0.10%, N: not less than 0.001% but less than 0.050%, sol. Al: not more than 0.010%, and O (oxygen): not more than 0.010%, with the balance being Fe and impurities, and further characterized in that the density of carbide and carbonitride precipitates contained with a grain diameter of not less than 0.3 &mgr;m is not more than 1×106/mm2. This steel may further contain one or more of the following elements: a total of 0.1-5.0% of Mo and W; a total of 0.02-5.00% of Cu, Ni and Co; a total of 0.01-0.20 of Ta, Hf, Nd and Ti; a total of 0.0005-0.0100% of Ca and Mg; and 0.0005-0.0100% of B.
    • 一种铁素体耐热钢,其在焊接接头的热影响区域的蠕变强度略有降低。 钢的特征在于以质量%计含有C:小于0.05%,Si:1.0%以下,Mn:2.0%以下,P:0.030%以下,S:0.015%以下, ,Cr:7-14%,V:0.05-0.40%,Nb:0.01-0.10%,N:不小于0.001%但小于0.050%。 Al:不大于0.010%,O(氧):不大于0.010%,余量为Fe和杂质,其特征还在于,粒径不小于0.3的碳化物和碳氮化物析出物的密度 妈妈不超过1×10 6 / mm 2。 该钢可以进一步含有一种或多种以下元素:总共为0.1-5.0%的Mo和W; 共计0.02-5.00%的Cu,Ni和Co; 共计0.01-0.20的Ta,Hf,Nd和Ti; 总计0.0005-0.0100%的Ca和Mg; 和0.0005-0.0100%的B.
    • 4. 发明授权
    • Steel material and method for its manufacturing
    • 钢材及其制造方法
    • US06348109B1
    • 2002-02-19
    • US09646573
    • 2000-09-19
    • Odd Sandberg
    • Odd Sandberg
    • C22C3824
    • C22C38/22C21D1/18C21D6/002C21D2211/003C21D2211/008C22C38/24C22C38/26C22C38/36
    • A steel material which is manufactured in a non-powder metallurgical way, comprising production of ingots or castings from a melt, consists of an alloy having the following chemical composition in weight-% Carbon: 2.0-4.3%, Silicon: 0.1-2.0%, Manganese: 0.1-2.0%, Chromium: 5.6-8.5%, Nickel: max. 1.0%, Molybdenum: 1.7-3%, wherein Mo completely or partly can be replaced by double the amount of W, Niobium: max. 2.0%, Vanadium: 6.5-15%, wherein V partly can be replaced by double amount of Nb up to max. 2% Nb, Nitrogen: max. 0.3%, wherein the contents of on the one hand carbon and nitrogen and on the other hand vanadium and any possibly existing niobium shall be balanced relative to each other, such that the contents of the said elements shall lie within the area of A, B″, E, F, B′, B, C, D, A in the co-ordinate system in FIG. 2, where V+2Nb, C+N co-ordinates for said points are A: (9,3.1), B″: (9,2.85), E: (15,4.3), F: (15,3.75), B′: (9,2.65), B: (9,2.5), C: (6.5,2.0), D: (6.5,2.45).
    • 以非粉末冶金方式制造的钢材,包括从熔体制造锭或铸件,由具有以下重量百分比的化学组成的合金:碳:2.0-4.3%,硅:0.1-2.0% ,锰:0.1-2.0%,铬:5.6-8.5%,镍:最大。 1.0%,钼:1.7-3%,其中Mo完全或部分可以被W,铌:最大量的两倍的量代替。 2.0%,钒:6.5〜15%,其中V部分可以用双重量的Nb代替。 2%Nb,氮:最大 0.3%,其中一方面碳和氮,另一方面钒和任何可能存在的铌的含量应相互平衡,使得所述元素的内容物应位于A,B的区域内 ',E,F,B',B,C,D,A在图1的坐标系中。 2,其中所述点的V + 2Nb,C + N坐标为:(9,3.1),B“:(9,2.85),E:(15,4.3),F:(15,3.75) ,B':(9,2.65),B:(9,2.5),C:(6.5,2.0),D:(6.5,2.45)。
    • 10. 发明授权
    • Non-heat treated crankshaft
    • 非热处理曲轴
    • US06712914B2
    • 2004-03-30
    • US10459476
    • 2003-06-12
    • Daisuke SuzukiHitoshi MatsumotoYuzuru TaharaShingo ShimizuToru TaniguchiYoshikazu Yamada
    • Daisuke SuzukiHitoshi MatsumotoYuzuru TaharaShingo ShimizuToru TaniguchiYoshikazu Yamada
    • C22C3824
    • C22C38/24C21D2211/005C21D2211/009C22C38/38C22C38/60F16C3/06F16C2310/00Y10S148/904
    • A non-heat treated crankshaft which comprises, in % by mass, C: 0.30 to 0.35%, Si: 0.40 to 0.80%, Mn: 1.00 to 2.00%, S: 0.040 to 0.080%, Cr: 0.10 to 0.30% and V: 0.05 to 0.20%, with the balance being Fe and impurities, and of which microstructure is a ferrite-pearlite microstructure whose ferrite fraction &agr; is 0.20 to 0.60 and average pearlite grain size Dp is 0.08 mm or less, and the value of Fn1 defined by the equation (1) being 0.73 or more, the value of Fn2 defined by the equation (2) being 1.20 or more and the value of Fn3 defined by the equation (3) being 0.64 or more, having excellent strength, low temperature toughness and wear resistance, so it can be applied to engines for working machine and general-purpose engines: Fn1=C+0.10Si+0.20Mn−0.71S+0.23Cr+1.65V  (1), Fn2=1.4−1.1×(1−&agr;)+0.16 Dp−½  (2), Fn3=(1−&agr;)+&agr;×(0.3Si+0.8V)  (3), where the symbols of the elements in the equations (1) and (3) respect the contents (% by mass) of the elements in the steel.
    • 1.一种非热处理曲轴,以质量%计含有C:0.30〜0.35%,Si:0.40〜0.80%,Mn:1.00〜2.00%,S:0.040〜0.080%,Cr:0.10〜0.30%,V :0.05〜0.20%,余量为Fe和杂质,其组织为铁素体 - 珠光体组织,其铁素体分数α为0.20〜0.60,平均珠光体粒径Dp为0.08mm以下,Fn1的定义 通过式(1)为0.73以上,由式(2)定义的Fn2的值为1.20以上,由式(3)定义的Fn3的值为0.64以上,强度优异,低温韧性 和耐磨性,因此可以应用于工作机械和通用发动机的发动机:方程式(1)和(3)中元件的符号符合钢中元素的含量(质量%) 。