热轧工艺润滑实验装置使用性能与应用.pdf免费

第三届全国金属加工润滑技术学术研讨会文集 热轧工艺润滑实验装置使用性能与应用 王茱清 朱作鑫 黄健 赵耀 孙建林 (北京科技大学材料科学与工程学院 北京 100083) 摘 要：以油水混合物为介质，研究了热轧工艺装置特性，测得了液滴直径与压力、喷嘴角度的变化关系 以及喷嘴流量与压力的关系，同时验证了装置的稳定性和油水混合均匀性，并在热轧机上进行了 Q235 热 轧工艺润滑实验。结果表明，液滴直径随压力和喷嘴角度增大而增大，喷嘴的流量由压力及喷嘴自身参数 同时决定，在压力为0.2-0.3MP，液滴直径在1mm 左右时即可达到良好的润滑效果，该装置使油水混合较 均匀，热轧实验效果良好，能够有效降低轧制压力。 关键词：润滑装置；混合均匀性；液滴直径；热轧实验 中图分类号：TG335 文献标识码：A Research on Characteristics of a Portable Experimental Device of Lubrication in Hot Rolling Process Wang Zhuqing ，Zhu Zuoxin ，Huang Jian ，Zhao Yao ，Sun Jianlin (School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083) Abstract: The experimental study on characteristics of the portal experimental device is carried out on the base of the mixture of water and oil as the working fluid. The relation between working fluid pressure and the angle of the nozzle with the droplet sizes and the flow capacity is acquired. The experiments test and verify the working stability of the device and its ability of improving the equality mixing of water and oil. The device works well on the hot rolling machine when rolling Q235 steels. The experiments show the droplet sizes will increase with the increase of working fluid pressure and the angle of the nozzle. The nozzle flow capacity is determined by pressure and nozzle parameter. In the experiments, the droplet sizes about 1 mm can reach good lubrication conditions with the pressure range of 0.2-0.3MPa. The device fits well on hot rolling machine and decreases the rolling pressure effectively. Keywords: droplet size; Oil-water Mixture; Experiments on Hot Rolling Machine 引言 近几年来，连铸连轧技术在不断的发展与完善，粗轧机组逐渐减少或忽略，板带钢精轧 机组向高速化、高效率化方向发展，热轧润滑工艺受到人们重视[1-2]，但目前国内热轧润滑 在稳定性、自动控制、给油方式、机械设计等方面尚存在不足，油耗量、浓度精确控制、润 滑效果等方面与国外存在较大差距[3] 。鉴于热轧润滑装置存在的稳定性差，润滑效果不好、 油耗量大等问题，