Nippon Steel Corporation

Toyota Jidosha Kabushiki Kaisha

Tsutomu Haeno

Hiroo Ishibashi

Noriyuki Suzuki

Hiroshi Kihira

Hiroshi Fukuchi

Yoshiaki Kadoma

Hiroyuki Mitake

Koichi Hiramatsu

Kazuyuki Kawano

Yuichi Yoshida

Takeo Dazai

Yoshio Saitoh

Yasuo Misawa

Itsuro Hiroshige

Shizuo Kohinata

Masanori Shimada

Kiyoshi Uda

Kyoichi Mano

Osamu Honda

Kouichi Sato

This invention provides a bending roll apparatus capable of preventing barrel-like deformation of a pipe occurring during a roll bending work and of manufacturing a small diameter elongated pipe. In an apparatus for manufacturing a pipe by pushing rolls to a core roll, feeding a metal sheet to their contact portions and performing a bending work, the bending roll apparatus comprises a core roll formed of a metal and a plurality of push rolls having a surface portion thereof formed of an elastic material and disposed around the core roll. The invention further provides, in a bending roll apparatus, a core roll formed of a metal, a plurality of push rolls formed of a metal and disposed around the core roll, and holding the core roll when a metal sheet is bent, and a guide belt formed of an elastic material, interposed between the core roll and each of the push rolls, contacting on a core roll surface on a side opposite to an entry side of the metal sheet and driven in synchronism with the core roll.

Bending roll apparatus

A mold clamping apparatus includes a frame including a holding portion for holding a mold and an open portion allowing the mold to be inserted into/taken out from the holding portion in a direction of the longer side of the mold, a mold moving device for moving the mold to insert/take out the mold into/from the holding portion through the open portion in the frame, and a mold opening/closing device for opening/closing the mold located outside the frame. This mold clamping apparatus is capable of holding the mold securely in a closed state resisting a pressure acting to open the mold and allows reduction of energy consumption, equipment maintenance cost, production cost, and the size thereof.

Mold clamping apparatus and mold clamping method

A highly durable separator for solid polymer fuel cells that can be produced at low cost and that is characterized by the separator having a flat portion in the peripheral portion and channels in the central portion composed of protruded portions and recessed portions which provide flow paths for gases on the front surface and the back surface, and the shape of each channel end portion being tilted.

Separators for solid polymer fuel cells and method for producing same, and solid polymer fuel cells

The present invention relates to a method for cooling a steel strip in a continuous-annealing furnace. Conventionally, the steel strip is cooled by a water medium and, thus, oxidation is inevitable. Recently developed roll cooling methods can prevent oxidation but are disadvantageous in that the steel strip is non-uniformly cooled as seen in its short width direction. The present invention attains uniform cooling by means of feedback control, in which the blowing width of the gas-jet cooler (21) is controlled by detecting the sheet temperature distribution with a thermometer (24, 60).

Method for cooling a steel strip in a continuous annealing furnace

Growing community of inventors

Futtsu, Japan

Tsutomu Haeno