Rules of spread for 304 austenite stainless steel ①5. 5 mm coil non-tension rolling by a Φ160 mm two-high mill at ambient with 33. 1% ~68. 0% reduction has been studied. Results showed that the change of spread was influenced by metal flow uniformity during rolling: as reduction Δh/h0 was less than 58. 9%
with increasing reduction ratio
the spread increased obviously
the formula of spread W
1
'= 5. 11 (Δh/h0) +4. 92 was obtained and as the reduction was larger than 58.9%
with increasing reduction ratio
the spread increased a little due to more homogeneous deformation.