大型风能铸件的材质标准和熔炼技术要点.pdfVIP

维普资讯 学兔兔 铸造工艺 大型风能铸件的材质标准和熔炼技术要点 王伟民 摘 要：欧洲标准EN 1 56 3：1 9 9 7增加了铸件本体试样的检测；根据买方和制造厂的协议， 抗冲击值和硬度均可单独作为验收标准，无须同时提供其他力学性能的检测数据。我国许多铸 造厂进口了大型感应电炉，冲天炉+铸造焦和国外水平对比大致相同。铸态铁素体球铁的熔炼 技术要点是①精选高纯炉料，②确保铁水过热温度不低于1 5 30℃，③7 5％硅铁的加入方法或时 效性比加入量更重要。 关键词：风能铸件；铸态；铸件本体；高纯炉料；过热铁水；后孕育； 随流 中图分类号：TG250．2 文献标识码：A 文章编号：1673—3320(2008)02—0023—05 Specification of Materials of Huge Castings for W ind Energy Main Points of the Melting Technology WANG Wei—min Abstract：European Standard EN l 563 was added to be evaluated the samples cut from casting． Both the impact resistance values and the hardness，if applicable，should be only determined without other mechanical properties，if specified by purchaser at the time of acceptance of the order~A lot of foundries in China have imported 1arge induction fumaces．and the level of cupola plus foundry cock should be as good as that in abroad．The main points of melting technology of spheroidal graphite cast iron with ferrite at cast should be as：①be care to choose the high pure charges，( super-heating temperature of molten iron should be higher than 1 530℃．@adding inoculant of 75％si—Fe at a set time should be rather important than added some more． Key words：Wind’S Castings；At cast；On body of casting；High pure charges；Molten iron by super heating；Post—inoculation；In—S仃eam 1 大型风能铸件的材质标准 造厂能生产这样巨大的铸件 (如图1所示)，他们 商用风车转子的壳体很大，铸件重量约为 也是这种铸件的采购商…。大型风能铸件已成为