Abstract：Takes the Chongqing Materials Research Institute Co.，Ltd.，and a certain factory in Fujian，China，

as research cases for the Sendzimir 20-high rolling mill. At present，the adjustment of the rolling line for the

Sendzimir 20-high rolling mill is mostly calculated in the secondary system，making it difficult for equipment

without a secondary system to find a suitable rolling line position. Therefore，it is particularly important to develop

the rolling line calculation function in the primary system. A rolling line position model for the rolling mill in the

primary system was estabilshed，and the upper gear stroke，the ratio relationship between the working rolls，and the relationship between the lower gear and the side eccentricity angle was calculated based on the maximum and

minimum diameters of the working rolls. The practical application showes that the program developed by the

primary system can calculate the rolling line position and side eccentricity angle under different conditions，which

can meet the rolling requirements and provide a good reference method for this type of rolling mill.

        Key words：Sendzimir 20-high rolling mill；rolling line position；side eccentricity angle；primary system

development

     Format Citation:马志强，吴畏，杨鹤,等. 森吉米尔20辊轧机轧线计算在一级系统的应用[J].电气传动,2026,56(09):91-96. MA Zhiqiang，WU Wei，YANG He,et al. Application of sendzimir 20-high rolling mill line calculation in primary system[J].Electric Drive, 2026,56(09):91-96.