The article describes the winding conditions under conventional assumptions, non-assumptions and simplifications for tension reels in cold rolling mills, and also gives the winding tension and nip pressure under such conditions.

The domestic design of the expanding cylinder of tension reel mostly is done consulting to similar foreign design and the results,generally,are far from the actual work conditions.

In the course of produce of number one coupled tandem mill,blocks of entry side and exit side of the carrousel double mandrel sleeve tension reel in the exit side of the product line were frequently struck down by dial orientation block.

TDC-based wrapping roll automatic jump control system for a 1500mm hot strip mill coiler;

Development of data acquisition system for coiler;

An Advanced Practical Automatic Control System for Hydraulic Coilers;

Main engine structure of Carrousel coiler and analyses on kinematics and dynamics parameters;

The calculation method of recoiler power in the strips' production is introduced.

The three motors tandem drive scheme is adopted while designing the recoiler drive system of 2050 mm six-high non- reversing aluminum strip cold rolling mill developed by our institute.

Main equipment design of strip slitting unit applied for big steel coil,heavy thickness and high strength,such as uncoiling machine,disc shear and recoiler were researched.