Nippon Steel Corporation

Toyota Jidosha Kabushiki Kaisha

Nippon Kinzoku Co., Ltd.

Nippon Steel Welding Products and Engineering Co., Ltd.

Yasushi Ishikawa

Mikio Yamanaka

Yutaka Sadano

Masao Yashiro

Toshikazu Nakagawa

Toshihiro Takada

Takashi Tanaka

Hitoshi Ohta

Shinichi Matsumoto

Nobuhiro Fujita

Shuichi Ueno

Akihiko Kasahara

Nobuo Mizuhashi

Tohru Saito

Nobuo Araki

Shinji Shibata

Takeshi Fukui

Hikaru Aoyagi

Masao Kamada

Masuhiro Fukaya

Shunichi Kikuta

Yoshio Nishizawa

Taizo Nakamura

Seiji Hashimoto

Takeji Kagami

Takuo Kono

Iwao Yamada

Takumi Nakamura

Kouki Yotsuya

Masaaki Ohashi

Hiroshi Iwami

Sadao Tsushima

Haruo Eujita

Shingo Tanioka

Hiroshi Tachikawa

Tetsuro Inomata

Yoji Chatani

Tadanobu Komai

Tatuo Sugiura

Metallic honeycomb body for supporting catalyst and production method

Metallic honeycomb body for supporting catalyst for automobiles and

A metallic carrier composed of an end face portion formed in at least one of the axial end portions of a honeycomb body and an outer circumferential reinforcing layer in which foils in a range from the outermost layer to a quarter of the total number of layers are joined together in the axial intermediate portion. Thus, the metallic carrier is flexible in expansion and shrinkage. Further, the honeycomb body and a jacket are joined to each other mainly at the outer circumference of the outer circumferential reinforcing layer of the honeycomb body, to reduce thermal stress developed between the honeycomb body and jacket while maintaining the strength against a high temperature, to thereby prevent the metallic carrier from being ruptured.

Heat and fatigue resistant metallic carrier for automobile exhaust

A semi-oval shaped metallic carrier having an excellent thermal stress resistance and thermal fatigue resistance and used for an automobile exhaust gas-purifying catalyst, in which the carrier is composed of a metallic honeycomb body constituted by superimposing flat metal foils and corrugated metal foils one on the other and winding them together, and a metallic jacket enclosing the lateral face of the honeycomb body, the transverse section of the metallic carrier constituting the parallel portions and semi-circular arc portions and the honeycomb body is joined to the jacket mainly at the semi-circular arc portions or at the parallel portions of the honeycomb body.

Semi-oval shaped carrier having excellent thermal stress resistance and

Methods for manufacturing tubes filled with powdery and granular

A catalyst carrier having a honeycomb structure made of metal sheets and used for a catalytic convertor for treating an exhaust gas of an internal combustion engine. The catalyst carrier is made of layers, each having a plain sheet, and at least one corrugated sheet applied on the plain sheet and having a width smaller than that of the plain sheet so that, laterally of the corrugated sheet, a portion of the plain sheet is not occupied by the corrugated sheet. The portion without the corrugated sheet is in face to face contact with a portion having a corrugated sheet on an adjacent layer, and as a result, a lateral engagement is obtained between the corrugated sheets of the facing layers, thereby preventing the layers from being laterally displaced along at least one direction.

Honeycomb catalyst carrier

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

A method for TIG welding by using a plurality of nonconsumable electrodes extending frm the tip of a TIG welding torch and one filler wire fed through a space between the electrodes, each electrode being independently supplied with power. A molten pool is formed by melting both the base metal to be welded and the filler wire by means of arcs generated between respective electrodes and the base metal. Melting of the base metal is mainly controlled by the arc produced by one of the plurality of electrodes while melting of the filler wire is mainly controlled by the arc generated by the other electrode.

Method and apparatus for TIG welding

Growing community of inventors

Sagamihara, Japan

Yasushi Ishikawa