PURPOSE: To obtain austenite series stainless steel having excellent surface characteristic in a product by specifying size of dimple on the surface of cooling drum and interval of mutually adjacent dimples.
CONSTITUTION: The diameter H is made 20 - 100μm and the depth is made 5 - 30μm for the dimple 4 on the surface 1 of cooling drum and the dimples are arranged so that the interval L of the adjacent dimples is ≥1/5 of H and ≤70μm. The austenitic grain 8 in solidified shell 2 is formed and grown as centering dimple edge part 5, but by the above size and arrangement interval, growth is prevented and the austenitic grain in the cast strip is formed as extremely fine, and the austenite series stainless steel strip having excellent surface characteristic in the product can be obtd.
NAKAJIMA HIROYUKI
TANAKA SHIGENORI
MIYAZAKI MASAFUMI
YAMAMOTO KEIICHI
YAMANE TAKASHI
MITSUBISHI HEAVY IND LTD
| JPS6483340A | 1989-03-29 |