【摘要】 本文利用箱式电炉及简易热天平研究了低合金灰铸铁(添加少量钛和稀土)和蠕墨铸铁在600℃、700℃时的抗氧化性能。文中研究了1、铸铁基本化学成分C、Si、Mn、S以及CE、Si/C的影响;添加少量Ti的影响。2、铸型冷速的影响(干砂型、金属型、石墨型)。3、残余稀土含量的影响,主要包括片状石墨分布特征和石墨形状的影响。4、测定并探讨了灰铸铁和蠕墨铸铁的氧化动力学曲线类型和它们的氧化过程。说明了细小的D型石墨、初生奥氏体枝晶分布及晶界在氧化过程中的行为。更多还原

【Abstract】 The anti-oxidizing properties of low alloy gray irons (contains a little amount of Ti and Re) and vermicular cast irons at temperatures of 600 and 700℃ are studied with the electrically-heated annealing orons furnace and a simple thermobalance. The paper also studied: 1. the influence of carbon、silicon and carbon ratio、maganese, sulphur and soon; 2. the influence of mold (dry and mold, metal mold, graphite mold); 3. the influence of residual Rare Earth content; 4. The oxidizing dynamic curves of gray cast irons and vermicular graphite cast irons are also measured.更多还原