Hitachi Cable, Inc.

Noboru Hagiwara

Hajime Abe

Kuniaki Seki

Takemi Muroga

Tadao Otani

Shinichi Nishiyama

Kenji Yokomizo

Kazuo Ishida

Yoshiki Yamamoto

Manabu Kagawa

Makoto Ohba

Satoshi Seki

Osamu Kawamata

Sinichi Nishiyama

A rolled copper foil consisted of at least either of silicon (Si) and iron (Fe), boron (B), silver (Ag), oxygen (O) of 0.002 mass % or less, and a balance consisted of copper (Cu) and inevitable impurities.

Rolled copper foil

A copper alloy material has a rolled surface having a plurality of crystal faces parallel to the rolled surface. The crystal faces includes at least one crystal face selected from a group consisted of {011}, {1nn} (n is an integer, n&#x2267;1), {11m} (m is an integer, m&#x2267;1), {023}, {012}, and {135}. Diffraction intensities of the crystal faces in an inverse pole figure obtained by crystal diffraction measurement of the rolled surface as a reference satisfy the relationships of:{011}&#x3e;{155}&#x3e;{133},{011}&#x3e;{023}&#x3e;{012}, and{011}&#x3e;{135}&#x3e;{112}.

Copper alloy material and a method for fabricating the same

A modified cross-section material having a thin part and a thick part in its widthwise direction is manufactured through a plurality of roll stages. Each rolling stage comprises of a set of a convex roll and a flat roll, wherein the convex roll has a convex part. The thin part is formed in accordance with the lengthwise expansion by the convex part of the convex roll, and the thick part is formed in accordance with the lengthwise expansion by a part other than the convex part of the convex roll.

Method of manufacturing modified cross-section material

A pipe coated with a resin layer on the inner surface and a method for manufacturing the pipe. According to the method, a resin mixture including thermal melting fluoro resin and fluorine elastomer is applied to the inner surface of a pipe member. The resin mixture is thermally treated on the inner surface of the pipe member to form a mesh like pattern so that a resin layer of a predetermined stripping strength is obtained.

Method of manufacturing a pipe coated with a resin layer on the inner

In a pipe coated with a resin layer on the inner surface thereof and a method for manufacturing the same, resin mixture including thermal melting fluoro resin and fluorine elastomer is applied to the inner surface of a pipe member. The resin mixture is thermally treated on the inner surface of the pipe member to be of a mesh like pattern so that a resin layer of a predetermined stripping strength is obtained thereon.

Pipe coated with a resin layer on the inner surface thereof

A method for coating the inner surface of a metal tube with a metal layer consisting of one or more metals, the metal layer having a melting point lower than that of the metal tube, the method comprising;

Method for manufacturing metallic tube members

A method for producing a strip of material having a non-uniform cross section is carried out by passing a strip of material in the longitudinal direction through a first set of working rolls, at least one of which is provided with an annular slot intermediate the ends thereof so that a reducing force is applied only to those portions of the strip engaging said roll on opposite sides of the slot whereby the excess material flows toward that portion of the strip opposed to the slot to cause the strip to buckle outwardly into the slot. The strip is subsequently passed through a set of smooth rolls to flatten the buckled portion. This procedure is repeated any desired number of times with the width of the slot becoming progressively smaller. The strip may then be passed through one or more sets of finishing rolls and a heating and annealing operation can take place before each passage through a set of finishing rolls.

Growing community of inventors

Ibaraki, Japan

Noboru Hagiwara