Upon completion of the commissioning phase, the line will be able to produce 450,000 t of galvanized or galvannealed steel strips per year, serving the automotive and home appliances industries in South China and the Pearl River Delta. Most notably, deep-drawing grades and high-strength steels for the automotive industry will be produced, including modern dualphase steels. Aside from automotive structural components, strips with a high-quality steel surface will be produced for use in exposed vehicle parts.
To achieve high cooling rates, a vertical radiant tube furnace with an ultra-fast cooling system from Drever has been integrated. A further highlight of the furnace is the pre-oxidation chamber, which allows steel grades with high manganese or silicon contents to be galvanized without wettability problems. A high-quality air-knife system from DUMA-BANDZINK has been integrated for the galvanizing process. Highest surface qualities are achieved, among other things, due to modern facilities such as a patented radial controller, an automatic air knife lip cleaner and a knife gap width adjustment system. Drever and DUMA-BANDZINK are both companies of SMS group.
Further components decisive for the high quality achieved by the continuous galvanizing line are the high-performance cleaning section, the four-high skin-pass mill, the tension leveler, the vertical roll-coater with a Drever drying and cooling system, the ASC side trimmer with integrated scrap chopper and the electrostatic DUMA-BANDZINK oiling machine.
The line is designed for strips with dimensions of typical car sheets. In the process section the strip will be coated with zinc at a process speed of up to 160 m/min, whereas in the entry and exit sections speeds of up to 220 m/min can be attained. The steel grades produced will include CQ, DQ, DDQ, EDDQ, HS and DP.
_{(Source: SMS group)}