轧钢加热炉普遍存在着钢坯加热黑印的缺陷。介绍了湘钢第二棒材厂轧钢加热炉在技术改造过程中,通过采用Co40、Co20全热滑轨取代传统的滑轨材质,达到了延长加热炉使用寿命和改善钢坯加热质量的目的。 Rolling furnace widespread billet heating black printing defects. This paper introduces the purpose of extending the service life of the heating furnace and improving the heating quality of the billet by adopting the Co40, Co20 all-hot slide instead of the traditional slide in the process of technological transformation.