Study on Oxidation of Stainless Steels During Hot Rolling

Experimental

An electrical furnace was adopted for reheating. Hot rolling tests were carried out on a Hille 100 Experimental Rolling Mill. A computer was used for data collection using Lab Window Software. The rolls are 225mm diameter by 254mm wide, induction hardened to 65 - 70RC up to 2.5mm deep with an initial surface roughness of 0.4μm (R_a) (Sun, 2005). The samples after rolling were put into a cooling box connecting with nitrogen to prevent further oxidation. The surface roughness was measured by the Hommel Tester T1000, the detailed procedures can be found in (Wei et al., 2009a).