Brief introduction of Bright annealing

- Jul 18, 2017 -

The cold rolled strip annealing with no oxidation and no decarburization on the surface is realized in the protection atmosphere. The atmosphere of protection has a single inert gas argon or helium, there are also mixed gas co-h2-n2-co2 (DX), N2-H2 (hnx), N2-CO2-H2, etc. The composition of these mixtures can adjust the oxidation and reduction, decarbonization and carburizing speed of the strip in the annealing process, so as to realize the no oxidation and no decarburization annealing. After annealing, the surface of the strip has an invisible oxide film to protect the metallic luster.

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