On a ccount of the difficulty to reach good temperature uniformity in a tunnel que nch furnace,this paper intro-duces the technology of pulse-firing control by high velocity burner with diffusion air.

• 针对某隧道式淬火炉炉温分布不均匀的问题,改造中提出了采用调温高速烧嘴脉动燃烧控制技术。