目前,对稀土在钢中的作用机理及其对钢材性能的提高和改善方面已做了大量的实验研究,经稀土处理的汽车大梁钢板的横向冲击韧性可提高50%以上;无缝钢管的耐腐蚀性能可提高60%。加强对稀土处理钢的研究,是推广稀土应用领域和开发新钢种的重要方向。炼钢生产中最常用的稀土产品有稀土硅合金和混合稀土金属丝(或棒)两种。随着稀土处理钢的发展,有关稀土元素在钢中的作用机理也逐 At present, a lot of experimental studies have been done on the mechanism of rare earth in steel and its improvement and improvement on the properties of steel. The transverse impact toughness of rare earth-treated automobile girder steel plate can be increased by more than 50%; the resistance of seamless steel pipe Corrosion performance can be increased by 60%. To strengthen the research on rare earth steel is an important direction to popularize the field of rare earth and to develop new steel. The most commonly used rare earth products in steelmaking are the rare earth silicon alloys and mixed rare earth metal wires (or rods). With the development of rare earth treated steel, the mechanism of action of rare earth elements in steel is also deteriorated