Title:
PRODUCTION METHOD OF STAINLESS THIN STEEL SHEET HAVING EXCELLENT SURFACE LUSTER AND HIGH CORROSION RESISTANCE
Document Type and Number:
WIPO Patent Application WO/1990/002615
Kind Code:
A1
Abstract:
This invention relates to a production method of a stainless thin steel sheet having excellent surface luster and high corrosion resistance which comprises heating a continuous cast slab of a ferrite or martensite type stainless steel to a temperature in the range of 1,100 to 1,300�C selected in accordance with a Cr content for a furnace staying time of within 260 minutes from pre-heating till extraction; hot-rolling it at a rolling finish temperature of 900�C or above; then conducting mechanical descaling by adding an abrasive-cleaning agent having a grain diameter of up to 400 mum such as iron sand to high pressure water and spraying them to the steel sheet; washing it with an acid; cold-rolling the steel sheet while keeping the relation between the roll diameter and a reduction ratio in a zone not having the occurrence of ''lap'' conducting finish cold-rolling, whenever necessary, by a work roller having a diameter of up to 100 mm; and making final annealing.
Inventors:
UEDA MASANORI (JP)
TSUCHINAGA MASAMITSU (JP)
IURA TERUO (JP)
FUJIWARA SHIGERU (JP)
TSUCHINAGA MASAMITSU (JP)
IURA TERUO (JP)
FUJIWARA SHIGERU (JP)
Application Number:
PCT/JP1989/000927
Publication Date:
March 22, 1990
Filing Date:
September 08, 1989
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/04; B21B3/02; B24C1/08; B24C11/00; C21D8/02; C21D9/46; (IPC1-7): B21B3/02; C21D8/02; C21D9/46; C23G1/08
Foreign References:
| JPS60262922A | 1985-12-26 | |||
| JPS61163216A | 1986-07-23 | |||
| JPS62224417A | 1987-10-02 | |||
| JPH0656768B2 | 1994-07-27 | |||
| JPH0661104A | 1994-03-04 |
Other References:
See also references of EP 0387361A4
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