Reversible Tandem Cold Rolling Mill Cold Rolled Steel Strip Rolling Mill Line

Cold Rolled Steel Strip Rolling Mill Line Reversible or Tandem
 
Cold rolled steel strip made from hot rolled steel coils by cold rolling mill, Strip cold rolling is carried out at (or near) the room temperature, the metal remains below its recrystallization temperature,and the metal plastic deformation occurs,  with strength of the metals increases around 20% due to strain hardening, and surface finish of the cold rolled steel increases and higher dimensional accuracy is achieved. Then allows to meet forming and bending operations as well as to get good surface finish of highly engineering steel strips. besides cold rolling process, it also needs:

• Descaling, Pickling: Before strip steel cold rolling, hot rolled steel strip is descaled with combination of chemical and mechanical process and then washed to remove acids .
• Annealing: Through cold rolling mill, strip is rolled to final thickness either directly or including annealing process at some intermediate thickness to enable further rolling. This can be done in the batch annealing section or in the continuous annealing and processing line. 
• Skin Pass: The continuous annealing and processing line is equipped with a skin-pass machine, which gives the strip of steel its needed elongation, roughness and flatness. Steel strips that were heated in the batch annealing section, receive additional treatment in the skin-pass.

We design, make and supply Steel Coil Sheet Cold Rolling Mill, Reversible or Tandem, different customers from different countries and regions require different configuration and process cold rolling mills to cater their local steel sheet market, the rolling capacity(rolling force, rolling speed, power consumption, etc.) differ with the market change, so each cold rolling mill should be designed accordingly.
 
Carbon steel sheets are most common metal sheet, most of carbon steel sheets are low carbon steel (mild steel), medium and high carbon steel sheets are high quality high tensile steel, we make carbon steel sheet cold rolling machines tailored to corresponding materials.
The cold rolling mills we mostly supply are carbon steel sheet cold mills. With productivity improving and steel sheet demand increase, the carbon steel cold mills are becoming higher speed, higher precision, lower consumption and lower maintenance cost. Our company always work with market, know well cold mill technology development and customer anticipation.
 
We make each mill customized, after knowing customer requirements:

1. The incoming carbon sheet specification: strip width, strip thickness, strip coil weight
2. The finished steel sheet specification: finished thickness, thickness tolerance, flatness tolerance
3. Capacity of the cold mill: how many tons per year for average thickness?
4. Configuration of the cold mill: automatic gauge control or not?

As per customer requirements, budget and preference, we specify the detailed specification of proper cold mill, 4high or 6high, tandem or reversible, and suggest customer machine configuration level and spares preparation. Customer is a part of our design, he will see his cold mill is what he hopes.
 
4Hi Mill Specification:

 
6 Hi Mill Specification: