Title:
MARTENSITIC STAINLESS STEEL PLATE FOR BRAKE DISK ROTOR, BRAKE DISK ROTOR, AND METHOD FOR MANUFACTURING MARTENSITIC STAINLESS STEEL PLATE FOR BRAKE DISK ROTOR
Document Type and Number:
WIPO Patent Application WO/2022/176707
Kind Code:
A1
Abstract:
A martensitic stainless steel plate for a brake disk rotor, the plate being characterized by including prescribed components and having a precipitate with a particle diameter of 2 µm or less present in the parent phase at a density of 0.01-20 per µm2. Due to the small presence of the precipitate during hot rolling and annealing of hot-rolled plates, productivity during quenching can be improved, tempering softening resistance during use as parts can be improved, cracking during hot stamping can be suppressed, and reduction of high-temperature strength can be suppressed. As a result, a martensitic stainless steel plate that can be used for a disk rotor can be obtained that has outstanding tempering softening resistance, quenching characteristics, workability, and high-temperature strength.
Inventors:
YOSHIZAWA TOSHIKI (JP)
HAMADA JUN-ICHI (JP)
HAMADA JUN-ICHI (JP)
Application Number:
PCT/JP2022/004892
Publication Date:
August 25, 2022
Filing Date:
February 08, 2022
Export Citation:
Assignee:
NIPPON STEEL STAINLESS STEEL CORP (JP)
International Classes:
C21D8/02; C21D1/18; C21D9/00; C22C38/00; C22C38/60; F16D65/12
Domestic Patent References:
| WO2020195915A1 | 2020-10-01 | |||
| WO2008044299A1 | 2008-04-17 | |||
| WO2007122754A1 | 2007-11-01 |
Foreign References:
| JP2019178419A | 2019-10-17 | |||
| JP2019065373A | 2019-04-25 | |||
| JP2020152959A | 2020-09-24 | |||
| JP2014118613A | 2014-06-30 | |||
| JP2019518609A | 2019-07-04 | |||
| JP4569360B2 | 2010-10-27 | |||
| JP5200332B2 | 2013-06-05 |
Attorney, Agent or Firm:
KINOSHITA & ASSOCIATES (JP)
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