Fine Tube Mill Line (FTL)
Electric control roll stands and 4-way roll stands
Electric control roll stands and 4-way roll stands are composed of high-precision unites. Roll adjustment is numerically controlled by servo-motors. This enabled easier restoration to the former state when tools are changed.
The 4-way rolls that can rotate up to 45 degree for both sides can straighten distortion that cannot be corrected by the sizing unit alone.
Online 3-dimentional profile detection system
Online 3-dimentional profile detection system measures cross-sectional shapes of pipes by image processing system using 4 CCD cameras and slit laser beams.
The correction values figured out from the measurement are fed back to the sizing unit or to the 4-way roll unit for straightening.
This system reduces the labor and loss time for sample measurement and roll adjustment.
- While the tolerances of existing mill of welding pipes are ±0.05mm for OD and 0.05mm for circularity, the tolerances of FTL are ±0. 015mm and 0.02mm respectively, realizing the accuracy of 3 times.
- With “NC automatic straitening system” and “Online 3-dimentional profile detection system”, the machines that can be operated only by skilled workers changed into innovative mills that allow any operators, regardless of the experience, gender, or age, to perform high precision processing.
Large energy saving and CO2 reduction by electrical appliance, car, and other industries can be expected by realizing low-cost high precision tube production.
FTL is a machine of the next generation to contribute to the world future.