Results show that fracture of the slab originates from overfiring of the slab due to high temperature in certain local area of the walking beam furnace and in light of the result proper counter measures are accordingly put forward.

• 结果表明,板坯断裂是由于步进炉中局部温度过高产生的过烧现象,根据分析结果提出了相应的改进措施。