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连铸坯的定尺切割是连铸生产工艺中影响成材率的重要环节。检测辊存在磨损、打滑等因素影响一次切割定尺精度。由于二次定尺切割板坯惯性差异大,难以通过调节变频器给定频率及传统机械弹性挡板实现二次切割前的准确定位。采用CCD摄像和数字图像边缘检测技术,实现了连铸板坯一次定尺切割控制和铸机拉速的动态跟踪,提出并实现了一种独特的液压缓冲、回推精确定位的二次定尺切割方法。实际运行结果表明,两次切割成材率达到98.5%,对多流连铸坯、中板、重轨等产品的定尺切割问题具有较好的参考价值。
Continuous casting billet cutting is the continuous casting production process affecting the yield of an important part. Detection of the existence of wear and tear, skidding and other factors affect a cut length accuracy. Due to the large difference in inertia of the secondary cut-to-size slab, it is difficult to realize the accurate positioning before secondary cutting by adjusting the given frequency of the frequency converter and the traditional mechanical elastic baffle. Using CCD camera and digital image edge detection technology, a continuous cutting slab control and casting machine dynamic tracking were realized. A unique hydraulic buffer and push-back precise positioning secondary ruler Cutting method. The actual operation results show that the yield of two cuts reaches 98.5%, which has a good reference value for the sizing cutting of multi-strand slab, middle plate and heavy rail.