高強度ばね用鋼、高強度ばねの製造方法及び高強度ばね

Japanese Patent JP5250609

B2

A steel for high-strength spring has an Ac 3 transformation temperature as an indicator of the decarburization performance, which is calculated by Equation (1) below, is from 859 to 885°C, a maximum hardened diameter DI as an indicator of the hardening performance, which is calculated by Equation (2) below, is from 70 to 238 mm, and a temper hardness HRC as an indicator of the spring performance, which is calculated by Equation (3) below, is from 50 to 55. wherein, D 0 = 8.65 × C , f Si =1+0.64×Si, f Mn =1+4.10×%Mn, f P =1+2.83×%P, f S =1-0.62×%S, f Cu =1+0.27×%Cu, f Ni =1+0.52×%Ni, and f Cr =1+2.33×%Cr.

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JP4818547	Centrifugal casting method, centrifugal casting equipment, alloys produced by it
JP3353321	FE-NI ALLOY THIN SHEET FOR SHADOW MASK EXCELLENT IN PRESS FORMABILITY AND ITS MANUFACTURE

Hideki Okada
Akira Tange
Koichi Tango
Sumiyoshi Isao

JP2010252856A

July 31, 2013

November 11, 2010

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Nippon Jojo Co., Ltd.

C22C38/00; C21D7/06; C21D9/02; C22C38/50; F16F1/06

JP2009046764A
JP11241143A
JP2009046763A
JP2004010965A
JP2003253391A

WO2006022009A1
WO2004085685A1

Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen

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