CAJ | 학술논문

经过高温力学性能实验，在650~1150℃的实验温度范围内明确了 SS400含硼钢的高温脆性区；并通过对铸坯的高温强度和热塑性分析，揭示了铸坯边裂产生的主要原因是钢种成分处于包晶钢的范围和钢中BN的析出。在 SS400含硼钢实际生产中，运用本文提出的措施可显著减少铸坯边裂的发生。
경과고온역학성능실험，재650~1150℃적실험온도범위내명학료 SS400함붕강적고온취성구；병통과대주배적고온강도화열소성분석，게시료주배변렬산생적주요원인시강충성분처우포정강적범위화강중BN적석출。재 SS400함붕강실제생산중，운용본문제출적조시가현저감소주배변렬적발생。
In this paper,high temperature brittle zone of SS400 boron-bearing steel were determined among experiment temperature range of 650~1 150 ℃ through the thermal simulation experiment of slab.Then the main reasons of forming edge cracks were re-vealed through high temperature strength and thermoplastic analysis of the slab,which involved the components of SS400 boron-bearing steel,which is in the range of peritectic steels,and the BN precipitation on grain boundary.During the practical production process of SS400 boron-bearing steel,the proposed measure can significantly reduce the edge cracks on slab surface.