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METHOD FOR SMELTING HIGH-CHROMIUM NICKEL ALLOY OF EP648-VI GRADE

机译：EP648-VI等级熔炼高铬镍合金的方法

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FIELD: metallurgy.;SUBSTANCE: invention relates to metallurgy, in particular to methods for smelting nickel alloys with high chromium content (up to 40%), intended for the manufacture of highly loaded parts with a limited service life at temperatures up to + 950°C. The method for smelting a high-chromium nickel alloy of EP648-VI grade includes preparation of charge materials, formation of a filling, smelting of a grade alloy in a vacuum induction furnace. When preparing charge materials, preliminary smelting is carried out in a vacuum induction furnace and casting into ingots of high-chromium alloy with chromium content of 40-55% using up to 100% of waste, including up to 50% of chips of the brand of alloy being melted, metal chromium and tungsten-chromium alloys and molybdenum-chromium, the surface of the melted high-chromium master alloy ingots is machined, which in an amount of up to 65% is set for smelting a grade alloy in a vacuum induction furnace as a part of charge materials together with metallic tungsten, molybdenum, niobium and nickel. ;EFFECT: requirements for the chemical composition of the alloy being melted and the level of properties are met, and the cost of production is reduced by saving expensive and scarce charge materials.;4 cl, 1dwg, 3 tbl, 1 ex
机译：田间：冶金。;物质：发明涉及冶金，特别是用于熔炼具有高铬含量（高达40％）的镍合金的方法，用于制造高负荷的部件，在高达+ 950的温度下具有有限的使用寿命。 °C。熔炼高铬镍合金的氧化铬镍级的方法包括制备电荷材料，在真空感应炉中形成填充，熔炼级合金的熔炼。当准备电荷材料时，初步熔炼在真空诱导炉中进行，用铬含量为40-55％的高铬合金的铸锭，可使用高达100％的废物，包括高达50％的品牌芯片用合金熔化，金属铬和钨 - 铬合金和钼 - 铬，熔化的高铬母合金锭的表面被加工，其中含量高达65％，以熔化真空中的级合金感应炉作为电荷材料的一部分以及金属钨，钼，铌和镍。 ;效果：融合合金的化学成分的要求和满足性能水平，通过节省昂贵和稀缺的电荷材料，减少了生产成本。; 4 Cl，1dwg，3 tbl，1例

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