【摘要】 介绍了大型钢铁零件和铝合金零件高性能挤压铸造的最新进展及其卡脖子难题，提出了相应的对策和解决方案。针对大型斗齿、齿座，圆锥破碎机的轧臼壁、破碎壁以及重型车辆的主动轮等典型大型零件，进行了挤压铸造的技术经济可行性分析，指出大型零件挤压铸造的主要难题是浇注过程氧化吸气严重、壁厚效应突出以及工艺装备投资巨大，提出了解决这些难题的气-液送料、随动浇注、液-机联合锁模、多段分级加压等技术路线并分析其可行性。更多还原

【Abstract】 The latest development of high-performance squeeze casting for large-scale steel parts and aluminum alloy parts as well as its key problem were introduced, and corresponding countermeasures and solutions were proposed. The technical and economic feasibility analysis of squeeze casting was carried out for typical large-scale parts such as large bucket teeth, tooth seats, rolling mortar walls and crushing walls of cone crushers, and capstan of heavy vehicles. The main problems of squeeze casting for large-scale parts were pointed out, including serious oxidation and gettering, prominent wall thickness effect and huge investment in process equipment during the pouring process. The technical routes to solve these problems were put forward, such as air-hydraulic pressure feeding, follow-up pouring, and the locking mold with uniting hydraulic pressure-mechanical force, and the feasibility of these technologies were analyzed.更多还原