Nippon Steel Corporation

Toshikazu Nakagawa

Yasushi Ishikawa

Mikio Yamanaka

Masao Yashiro

Hitoshi Ohta

Nobuhiro Fujita

Yutaka Sadano

Masuhiro Fukaya

Sadao Tsushima

Shingo Tanioka

Tetsuro Inomata

Metallic honeycomb body for supporting catalyst and production method

Metallic honeycomb body for supporting catalyst for automobiles and

A method of diametrically contracting a cylindrical body, includes the steps of grasping the cylindrical body with a plurality of elongated grasping members, preparing a cylindrical drawing die having an opening at one end and a tapered inside peripheral surface, drawing the grasping members together with the cylindrical body into the drawing die, through the opening, and applying a compression force to the cylindrical body through the grasping members due to the passage along through the tapered inside peripheral surface, to thereby cause the cylindrical body to be diametrically contracted. During the drawing process, since the cylindrical body does not come into direct contact with the drawing die, neither scratches nor baking cracks are produced on the outside surface of the cylindrical body.

Method for contracting a cylindrical body

Growing community of inventors

Tokai, Japan

Toshikazu Nakagawa