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Material based on a CrNi alloy, semi-finished product, components for a combustion engine and method for manufacturing the material and the semi-finished product
Material based on a CrNi alloy, semi-finished product, components for a combustion engine and method for manufacturing the material and the semi-finished product
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机译:基于CrNi合金的材料,半成品,用于内燃机的部件以及制造该材料和半成品的方法
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摘要
The material has a chemical composition expressed by: (Cr xNi yA z)N k, where x+y+z = 100%. The component A z comprises one or more of La, Ce, Y, Hf, Sc, Si, C, S P, Al, Zr, B, Mo, Fe, Mn, O and the rare earths. The chromium content is 50wt%-100wt%, nickel is present, and the component A z comprises 0wt%-50wt%. The novel feature is the presence of nitrogen (N k) at 0.01 wt% - 0.1 wt%. Preferred concentrations are: nitrogen 0.02 wt%, chromium 54 wt%-58 wt%, nickel at least 20 wt% and oxygen 0.1 wt%. Further limitations concerning minor constituent content are detailed. The material is a gas-atomized metal powder. Its grain size is 10 mu m - 200 mu m, preferably 45 mu m - 150 mu m. Components are produced from the powder, by hot isostatic pressing. These are e.g. a large diesel engine fuel atomizer, a nozzle head for a fuel injection nozzle used in a two- or four stroke engines, especially large two-stroke diesel engines, an injection anti-chamber for four stroke engines or other internal combustion engine components. The atomization gas is a noble gas, especially argon and/or helium. Hot isostatic pressing takes place in a process chamber at pressures and temperatures preferably exceeding 1000 bar and 1100[deg] C. The process for blank component production preferably lasts about 3 h. The process gas is high-purity argon. Independent claims are included for the following: (A) a component for an internal combustion engine; (B) and a method of making the material.
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机译:该材料的化学组成表示为:(Cr xNi yA z)N k,其中x + y + z = 100%。组分A z包括La,Ce,Y,Hf,Sc,Si,C,Sp,Al,Zr,B,Mo,Fe,Mn,O和稀土中的一种或多种。铬含量为50wt%-100wt%,存在镍,并且组分A z占0wt%-50wt%。新颖的特征是存在0.01wt%-0.1wt%的氮(N k)。优选的浓度为:氮0.02wt%,铬54wt%-58wt%,镍至少20wt%和氧0.1wt%。详细说明了有关次要成分含量的进一步限制。该材料是气雾化的金属粉末。其晶粒尺寸为10μm-200μm,优选45μm-150μm。通过热等静压,由粉末生产成分。这些是例如大型柴油发动机的燃油雾化器,用于二冲程或四冲程发动机(尤其是大型二冲程柴油发动机)的燃料喷嘴的喷嘴头,用于四冲程发动机或其他内燃机组件的喷射防燃烧室。雾化气体是稀有气体,尤其是氩气和/或氦气。热等静压在优选超过1000巴和1100℃的压力和温度下在处理室中进行。用于坯件生产的过程优选持续约3小时。工艺气体是高纯度氩气。包括以下方面的独立权利要求:(A)内燃机的部件; (B)和制造材料的方法。
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