Title:
B-ADDED AUSTENITIC STAINLESS STEEL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3169326
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce an austenitic stainless steel having hot workability, particularly, excellent in surface properties to a degree that ear cracking and plunged flaws are eliminated at a high yield.
SOLUTION: Molten steel contg., by weight, 0.1% C, 0.1 to 1.00% Si, 0.10 to 2.00% Mn, 0.05 to 5.0% B, 11.0 to 27.0% Cr, 7.0 to 25.0% Ni and ≤0.3 N and contg., at need, 0.1 to 3.0% Mo is cast in such a manhner that the degree ΔT of superheat at the time of ingot making is regulated to 30 to 130°C. Thus, boride having ≤10μm grain size are dispersedly precipitated into the steel to produce the objective B-added austenitic stainless steel.
Inventors:
Toge Takeya
Fujiwara Saihito
Hiroshi Yoshida
Makoto Oikawa
Fujiwara Saihito
Hiroshi Yoshida
Makoto Oikawa
Application Number:
JP27503395A
Publication Date:
May 21, 2001
Filing Date:
September 29, 1995
Export Citation:
Assignee:
Nippon Yakin Kogyo Co., Ltd.
International Classes:
B22D11/00; B22D7/00; C21D6/00; C22C33/04; C22C38/00; C22C38/54; (IPC1-7): C22C33/04; B22D7/00
Domestic Patent References:
| JP6328196A | ||||
| JP7188744A | ||||
| JP62222049A | ||||
| JP8215831A |
Attorney, Agent or Firm:
Junzo Ogawa (1 person outside)