一、前言 由于热轧矽钢工艺生产的严格性,对步进炉提出了相当苛刻的要求:在一个20秒的循环周期内,一次出四块料;板坯要分开平放,不能重叠、歪斜和振动。目前国内步进炉炉床来回振动仍较大,一般在10～30毫米之间,振动在5次以下。很多厂为解决此问题,在步进炉液压系统设计中采用H型阀而不采用O型阀,但仍解决不了液压冲击。同时,采用H型阀运转时间增多后,循环周期 First, the introduction Due to the stringency of hot-rolled silicon steel production process, the stepping furnace made quite demanding requirements: in a 20 second cycle, once out of four materials; slabs should be placed separately, can not overlap, Skew and vibration. The current domestic furnace hearth back and forth vibration is still large, usually between 10 to 30 mm, the vibration in less than 5 times. Many factories to solve this problem, the stepping furnace hydraulic system design using H-type valve instead of using O-valve, but still can not solve the hydraulic impact. At the same time, the use of H-valve operation time increases, the cycle