宽带钢热连轧机组均压支承辊辊形开发与应用

 CVC工作辊辊形自发明以来在全球150多条热连轧生产线上得到应用，以控制带钢的板形。实际应用中，与CVC工作辊配对使用的支承辊无论采用平辊还是CVC辊形均存在非均匀磨损甚至轧辊剥落失效的问题，主要原因是CVC支承辊辊形和平支承辊与CVC工作辊配置时存在接触压力集中。为了解决此问题，设计并应用了一种均压支承辊辊形与CVC工作辊配置使用。此辊形是变接触支承辊辊形（VCR）与CVC支承辊辊形的组合，具有变接触辊形的优点，同时又能更好地与CVC工作辊配置使用。均压支承辊辊形应用后，改善了CVC工作辊与支承辊辊间接触状态，解决了轧辊剥落问题，并改善了带钢凸度质量。

Development and Application of Pressure-Equalizing Back-Up Roll Contour in Hot Strip Mill

CVC(Continuous Variable Crown) work roll contour technology since its invention was applied in more than 150 hot rolling mills throughout the world for controlling strip shape.However,in actual application,there were uneven wear on rolls or even roll spalling problems because contact pressure concentrations existed between work and back-up rolls when flat or CVC back-up roll was used for configuration with CVC work roll during the rolling.For solving these defects,a pressure-equalizing back-up roll contour with combination of VCR(Variable Crown Back-up Roll) and CVC back-up roll contours was designed and applied on a hot rolling mill.It not only has the feature of VCR back-up roll contour,but also can improve the contact condition between work and back-up roll.After the application of pressure-equalizing back-up roll contour,roll spalling problem was solved,and strip profile quality was also improved.