【摘要】 首先提出了大型钢铁件液态模锻的三个技术关键——定量浇注、模具选材及寿命和液态模锻装备，给出了突破这三个技术关键的技术路径；随后介绍了大型衬板、大型轮盘件及大型双金属复合钢铁件液态模锻的工艺要点、液锻机特点、关键工艺参数及其技术经济效果。结果表明，称重式自动定量浇注机（车）是钢铁件液态模锻定量浇注的最优选择，自动调节流量的冷却水控制系统和金属型铸钢涂料的使用可以有效调控模具温度，移出工作台的立式多向液态模锻机是大型钢铁件液态模锻的最适宜机型。液态模锻大型钢铁件具有工艺出品率高、组织致密、综合性能优异的突出优势，在耐磨零件、难锻造零件及双金属复合件方面应用前景广阔。更多还原

【Abstract】 First, three key technologies for melted metal die forging(MMDF) of large steel and iron components are proposed, including quantitative pouring, mold material selection and service life, and MMDF equipment, and technical approaches to break through these three key technologies are presented. Subsequently, the process essentials, characteristics of MMDF machines, key process parameters, and technical-economic effects of MMDF for large liners, large wheel discs, and large bimetallic composite steel and iron components are introduced. The results show that the weighing-type automatic quantitative pouring machine(cart) is the optimal choice for quantitative pouring in MMDF of steel components. The use of a cooling water control system with automatic flow regulation and metal mold cast steel coatings can effectively control the mold temperature. The vertical multi-directional MMDF machine with a removable worktable is the most suitable model for MMDF of large steel and iron components. MMDF of large steel and iron components exhibits prominent advantages such as high process yield, dense structure, and excellent comprehensive performance, and has broad application prospects in wear-resistant parts, difficult-to-forge parts, and bimetallic composite parts.更多还原