Tin Free Steel£¨TFS£©
- Production Process
- Product Features
- Surface Inspection Items
Manufacturing Process
Production Process and Equipment Features of TFS Line
Baosteel's TFS line adopts the two-step process, the major steps of which include:
Uncoiling ¡ú Alkaline cleaning ¡ú Straightening ¡ú Pickling ¡ú Metallic chromium plating ¡ú Chromium oxide plating ¡ú Oiling ¡ú Side cutting ¡ú Quality inspection ¡ú Coiling
Process Equipment Features of TFS Line
①The tension straightening machine can effectively improve plate shapes;
②“The two-step chrome-plating process can effectively control both the metallic chromium thickness and the chromium oxide thickness;
③Electrostatic oiling ensures a uniform oiling result;
④The surface color of Baosteel TFS is blue, which is preferred by users for applications;
⑤It is equipped with the online defect identification system.
Major Production Lines
NO 1220
The 1220 unit was put into operation in December, 1990, and its main products are cold-rolled plates, EPS and TFS. Its major production lines include a pickling line, a five-stand continuous cold rolling mill, an electrolyte cleaning line, a full hydrogen forced convection batch annealing furnace line, a temper mill, a continuous annealing line, a double reduce cold rolling mill, an electrolytic tinning line, a tin free line and a finishing line.
Its designed capacity of finished products is 1,000,000 tons/year, which includes 450,000 tons of cold-rolled products per year, 350,000 tons of ETP per year and 200,000 tons of TFS per year.