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21.发明公开
公开(公告)号：EP1983064A3
公开(公告)日：2008-11-19
申请号：EP07016546.9
申请日：2007-08-23
CPC分类号： C21D9/30 , C21D1/18 , C21D5/00 , F16C3/08 , F16C9/02 , F16C33/14 , F16C2220/60 , F16C2223/42 , Y10T29/49286
摘要： The invention relates to a method for producing a crankshaft, in special for diesel engines, wherein a crankshaft blank is produced from austempered ductile cast iron, the casting blank is subjected to heat treatment matched to the austempered ductile cast iron whereby the blank acquires high strength and hardness. According to the invention, surfaces which form bearing surfaces for connecting rods and shaft bearings are undersized before the ADI heat treatment. Following the heat treatment a coating is applied to the bearing surfaces, the layer thickness being matched to the undersize and dimensional deviations as a result of the heat treatment. The coated bearing surfaces are finally finish-machined to the finished size without the need of machining the bearing sufaces of the casting blank after the heat treatment.
摘要翻译： 本发明涉及一种特别用于柴油发动机的曲轴的生产方法，其中曲轴坯由奥贝球墨铸铁生产，铸坯经受与奥贝球墨铸铁匹配的热处理，由此坯体获得高强度 和硬度。 根据本发明，在ADI热处理之前，形成用于连接杆和轴承的支承表面的表面尺寸过小。 在热处理之后，将涂层施加到轴承表面，该层厚度由于热处理而与尺寸偏差和尺寸偏差相匹配。 涂层轴承表面最终精加工成最终尺寸，而不需要在热处理后机加工铸坯的轴承表面。
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公开(公告)号：EP1877593A2
公开(公告)日：2008-01-16
申请号：EP06752290.4
申请日：2006-05-04
发明人： LIAO, Gangjun , LI, Delin , BURGER, Gene, B. , LOGAN, Robert, N.
IPC分类号： C22C37/00
摘要： A nodular, compacted graphite or other hybrid or duplex graphite morphology cast high silicon iron is disclosed which contains up to 1.5% tungsten, up to 0.8% vanadium, and up to 1.2% niobium; and at least 60.0% iron, all percentages are based on the total weight of the composition. This cast iron exhibits high strength and good ductility over a wide temperature range compared to the conventional SiMo ductile iron. The compositions may further contain, up to 1.5% molybdenum and up to 1.0 % chromium to offer improvements in material strength. The compositions may include 0.2 to 0.5% by weight aluminum and up to 1.2% chromium for further oxidation resistance and 0.5 to 5.0% nickel for corrosion resistance.
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公开(公告)号：EP1460143B1
公开(公告)日：2006-11-22
申请号：EP04007289.4
申请日：1997-09-02
发明人： Sugawara, Takeshi , Kikawa, Kazuo
IPC分类号： C22C37/00 , C22C37/10 , C22C33/08 , C21D5/00 , B22D17/30 , B22D27/02 , B22D27/04 , B22D41/015 , B22D17/28 , B22D1/00
CPC分类号： C22C38/02 , B22D17/007 , C21D1/32 , C21D5/00 , C21D2211/006 , C22C37/04 , C22C37/10
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25.发明公开Verfahren zur Herstellung eines Werkstückes aus sphäroguss und nach diesem hergestelltes Werkstück 审中-公开一种用于生产球墨铸铁的工件和用于该工件产生过程
公开(公告)号：EP1566454A1
公开(公告)日：2005-08-24
申请号：EP05450027.7
申请日：2005-02-10
发明人： Kehrer, Oskar
CPC分类号： C21D5/00 , C21D1/18 , C21D2211/002 , C21D2211/006 , C22C37/04
摘要： Ein Verfahren zur Herstellung eines Werkstückes aus bainitischem Sphäroguss durch Austenitisieren und nachfolgendes Bainitisieren soll diesen verbilligen und verbessern. Es wird in folgenden Schritten vorgegangen: Austenitisieren bei einer Temperatur von 950 bis 1100° Celsius in einer C-haltigen Atmosphäre, dann Abkühlen auf Raumtemperatur, und schließlich Bainitisieren durch Erwärmen auf eine Anlasstemperatur von 150 bis 600° Celsius. Ein verbessertes Ausgangsmaterial enthält mehr C und Si und kann Ce und/oder Ca enthalten.
摘要翻译： 从一个贝氏体球形铸造材料制成的工件的生产在含碳气氛950-1100 [度] C包括奥氏体化，通过加热冷却至室温，并bainitizing到120回火温度到600℃]℃。在 因此独立claimsoft被包括用于从贝氏体球形铸造材料制成的工件。
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公开(公告)号：EP1534867A2
公开(公告)日：2005-06-01
申请号：EP03794537.5
申请日：2003-08-29
申请人： Intermet Corporation
IPC分类号： C21D1/00
摘要： A machinable austempered cast iron article has improved strength, machinability, fatigue performance, and resistance to environmental cracking. A method of making the machinable austempered cast iron article includes austenitizing an iron composition having a substantially pearlitic microstructure in an intercritical temperature range of between 1380°F and 1500 °F. This produces a ferritic plus austenitic microstructure. The ferritic plus austenitic microstructure is quenched into an austempering temperature range of between 575 °F and 750 °F within 3 minutes to prevent formation of pearlite. The ferritic plus austenitic microstructure is then austempered in the austempering temperature range of between 575 °F and 750 °F to produce a microstructure of a continuous matrix of equiaxed ferrite with islands of austenite. Finally, the microstructure of the continuous matrix of equiaxed ferrite with islands of austenite is cooled to ambient temperature to produce the machinable austempered cast iron article.
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27.发明公开A process for thermally treating an Fe-based cast product and the product obtained by the process 失效的热处理的方法的铁基模制品，以及通过该方法生产的物品
公开(公告)号：EP1460144A3
公开(公告)日：2004-10-06
申请号：EP04007290.2
申请日：1997-09-02
IPC分类号： C22C37/00 , C22C37/10 , C22C33/08 , C21D5/00 , B22D17/30 , B22D27/02 , B22D27/04 , B22D41/015 , B22D17/28 , B22D1/00
CPC分类号： C22C38/02 , B22D17/007 , C21D1/32 , C21D5/00 , C21D2211/006 , C22C37/04 , C22C37/10
摘要： An Fe-based cast product with 1.8-2.5 wt% C, 1.4-3.0% Si and 0.3-1.3% Mn which is produced by thermally treating an Fe-based cast product made by utilizing a thixocasting process using an Fe-based casting material as a casting material, said Fe-based cast product including a matrix and a large number of groups of massive fine alpha -grains dispersed in the matrix, said Fe-based cast product having a thermally-treated texture where a large number of graphite phases are dispersed in said matrix and each of said groups of fine alpha -grains, and said Fe-based cast product having a free-cutting property such that a ratio B/A of an area rate B of the graphite phases in all said groups of fine alpha -grains to an area rate A of the graphite phases in the entire thermally-treated texture is in a range of B/A ≥ 0.138. The thermal treatment is made under the conditions where, when a eutectoid temperature of said as-cast product is Te, the thermally treating temperature T is set in a range of Te ≤ T ≤ Te + 170 DEG C, and the thermally treating time t is set in a range of 20 minutes ≤ t ≤ 90 minutes, thereby providing a thermally-treated product with a free-cutting property.
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公开(公告)号：EP1460143A2
公开(公告)日：2004-09-22
申请号：EP04007289.4
申请日：1997-09-02
发明人： Sugawara, Takeshi , Kikawa, Kazuo
IPC分类号： C22C37/00 , C22C37/10 , C22C33/08 , C21D5/00 , B22D17/30 , B22D27/02 , B22D27/04 , B22D41/015 , B22D17/28 , B22D1/00
CPC分类号： C22C38/02 , B22D17/007 , C21D1/32 , C21D5/00 , C21D2211/006 , C22C37/04 , C22C37/10
摘要： A process for preparing a thixocast semi-molten casting material, comprising the steps of selecting an Fe-based casting material as a thixocast casting material; placing said Fe-based casting material into a transporting container made of a non-magnetic metal material; rising the temperature of said Fe-based casting material from normal temperature to Curie point by carrying out a primary induction heating with a frequency f1 set in a range of f1≤0.8 kHz; and then rising the temperature of said Fe-based casting material from the Curie point to a preparing temperature providing a semi-molten state of the Fe-based casting material with solid and liquid phases coexisting therein by carrying out a secondary induction heating with a frequency f2 set in a range of f2≥0.85 kHz.
摘要翻译： 一种制备触变型半熔铸材料的方法，包括以下步骤：选择一种铁基铸造材料作为触变铸造材料; 将所述铁基铸造材料放入由非磁性金属材料制成的运输容器中; 通过进行设定在f1≤0.8kHz范围内的频率f1的初级感应加热，将所述Fe基铸造材料的温度从常温升高到居里点; 然后将所述Fe基铸造材料的温度从居里点升高至准备温度，从而通过以频率的二次感应加热提供具有固相和液相的共同存在的Fe基铸造材料的半熔融状态 f2设定在f2≥0.85kHz的范围内。
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公开(公告)号：EP0917500B1
公开(公告)日：2000-05-10
申请号：EP97918966.9
申请日：1997-08-06
申请人： Fenne, Michael , Holtz, Oswald
发明人： Fenne, Michael , Holtz, Oswald
IPC分类号： B22D30/00
摘要： In order to produce castings from cast iron with foliated graphite, the carbon content of the cast iron can be set at between approximately 3 and 4 % by controlling the melting process by means of the type and/or operation of the melting furnace. The molten mass is then cast in a sand-casting or lost-form method. During conventional cooling, the known mechanical properties of the cooled cast are set. According to the invention, in order to improve these mechanical properties in terms of hardness and strength, the casting is released from its mould at a temperature ranging from 1100 DEG C to 800 DEG C and is immediately subjected to a cooling treatment by being blasted with an air flow in order to cool it to below 723 DEG C in a given amount of time. The casting, in selected regions, is cooled to below 723 DEG C by specific intermittent bursts of air in a relatively short amount of time in order to produce a harder structure. The cooling treatment is stopped when the temperature at the eutectoid line of the iron-carbon diagram is reached.
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公开(公告)号：EP0735150A3
公开(公告)日：1997-05-28
申请号：EP96104818.8
申请日：1996-03-26
发明人： Fujiwara, Yasuyuki c/o Toyota Jidosha K.K. , Yamamoto, Izuru c/o Toyota Jidosha K.K. , Onishi, Masazumi c/o Toyota Jidosha K.K. , Tanaka, Toshiaki c/o Toyota Jidosha K.K. , Tsuchiya, Yoshinari c/o Toyota Jidosha K.K. , Danno, Atsushi c/o Toyota Jidosha K.K.
摘要： A method for producing cast iron gears includes the steps of heating a blank composed of cast iron and having a teeth forming part to such a temperature that at least the teeth forming part is at least austenitized, and hot rolling the teeth forming part of the blank by pressing projecting teeth of a rolling machine against the teeth forming part which is in a hot state and within an austenitized range, while cooling the blank, thereby generating a teeth part in the teeth forming part of the blank. Hot rolling with a low plastic deformation resistance prevents lowering of strength due to the exposure of graphite particles of cast iron and occurrence of quenching cracks and rolling cracks, and improves gear accuracy.
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