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納米TiO2軋制液對硅鋼冷軋性能的影響

Effect of nano-TiO2 rolling liquid on the cold rolling properties of silicon steel

  • 摘要: 分別采用傳統冷軋軋制液和納米TiO2的冷軋軋制液,對無取向硅鋼板進行了四輥冷軋實驗.重點研究兩種冷軋軋制液的軋制潤滑性能和對軋后硅鋼薄帶表面質量和耐蝕性能的影響.通過場發射電子顯微鏡和能譜儀對使用兩種軋制液軋后得到的硅鋼薄帶表面形貌和成分進行了分析.給出了軋制液中TiO2納米粒子在軋制過程中的抗磨減摩機理.在軋制載荷較高時,納米TiO2軋制液具有優良的軋制潤滑性能并能顯著改善軋后硅鋼薄帶的表面質量.同時在高載荷作用下,TiO2納米粒子被壓入硅鋼薄帶基體,形成一個滑動系來支撐載荷,從而使潤滑膜的耐磨性提高.

     

    Abstract: Non-oriented silicon steel strips were rolled on a four-high cold rolling mill lubricated by a traditional cold rolling liquid and a nano-TiO2 cold rolling liquid, with emphasis on studying the roiling lubrication performance of both the liquids and their effect on the surface quality and corrosion resisting property of the silicon steel strips. The surface micrograph and composition of the silicon steel strips after being rolled with both the liquids were characterized by field emission scanning electron microscopy and energy-dispersive spectroscopy. The anti-wear and friction-reducing mechanism of TiO2 nanoparticles in cold rolling was given on the basis of experimental results. The nano-TiO2 cold roiling liquid has excellent lubricant performance and can improve the surface quality of the silicon steel strips remarkably when rolled with heavy load. Meanwhile, TiO2 nanoparticles are compressed into the silicon steel matrix by high load and a sliding system is formed to bear the load, leading to a higher wear resistance of the lubricant film.

     

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