【摘要】 介绍了我国铁路机车车辆铸钢件生产的发展过程。特别是近十多年来的技术进步,使铸件的产量和质量迅速提高,一些工厂的铸钢件完全达到了发达国家的水平,并大量出口。长期以来一直使用的ZG230450已被符合美国AAR M201标准的低合金钢所取代,水爆清砂工艺已被禁止使用,多种造型新工艺如有机酯硬化水玻璃砂工艺、真空造型工艺已成功地用于制造各种铁路铸钢件,使用了三十多年的普通CO2水玻璃砂造型将迅速被淘汰。还指出了当前我国铁路铸钢件生产上存在的一些问题,提出了应采取的措施和将来的发展方向。更多还原

【Abstract】 The development of China railway vehicle steel casting production has been reviewed. Much progress has been made,especially in recent ten years,resulting in a big improvement of casting quality and a quick increase of casting production volumes. The ZG230-450 carbon steel once widely used for a long period has been replaced by low alloy steels,such as Grade B,Grade C,and Grade E,which meet the requirements of AAR-M-201 specification. The LF refining process technology is employed into some foundries in order to improve the quality of metals further. The conventional CO₂-sodium silicate sand molding process will be out of date soon since many new processes,such as ester-hardening sodium silicate sand molding process,"vacuum" molding process,have been adopted to produce railway vehicle steel castings successfully and several production lines are being built. Some problems presented in the foundries are pointed out here. The measurements should be taken and the further development direction is suggested.更多还原