Nhk Spring Co., Ltd.

Koichi Tamatsu

Hiroshi Koyama

Jun Umeno

Masato Sugawara

Tsutomu Furuyama

Yoshihiro Koshita

Takahiro Nakamura

Akihiro Katsuya

Hiroshi Machida

Fumiaki Kimura

Yasuaki Tsuji

Hiroshi Masuya

In a method of manufacturing a hollow stabilizer, a pipe compressing step of compressing an electroseamed pipe in a temperature range of a hot state or a warm state so as to make a rate of a thickness with respect to an outer diameter between 18 and 35% is performed, and a forming step of forming the compressed electroseamed pipe in a stabilizer shape in a cold state is executed. Next, a step of applying a heat treatment to a half-finished stabilizer is performed, a shot peening step of impacting a shot on the half-finished stabilizer is performed, and a step of coating the half-finished stabilizer is performed.

Hollow stabilizer and method of manufacturing the same

A hollow stabilizer made of a steel pipe, comprises: a torsion portion extending in a width direction of a vehicle body; a pair of right and left arm portions positioned at both end sides of the torsion portion; and a plurality of curved portions which are bent in an arc shape in any of the torsion portion, the arm portions and portions therebetween. Bending radii of the plurality of curved portions are different from each other.

Hollow stabilizer

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Yokohama, Japan

Koichi Tamatsu