Hitachi Metals, Ltd.

Ebara Corporation

Hitachi Cable, Inc.

Takeshi Usami

Toru Sumi

Takashi Hayasaka

Kazuhiko Sugiyama

Shohei Hata

Katsumi Kimura

Kazuya Nishi

Toshio Miwa

Michio Takashima

Seigi Aoyama

Hiroshi Okikawa

Takayuki Tsuji

Keisuke Fujito

Hajime Nishi

Masato Ito

Hiroshi Yamanobe

A wire rod made of an aluminum alloy. The aluminum alloy includes Al crystal grains, an Al&#x2014;Zr compound, and an Al&#x2014;Co&#x2014;Fe or Al&#x2014;Ni&#x2014;Fe compound. The aluminum alloy includes high-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 15 degrees or more, and low-angle tilt crystal grain boundaries, each of which has a difference between crystal orientations in both its sides of 2 degrees or more and less than 15 degrees. An average grain diameter of ones of the Al crystal grains surrounded by the high-angle boundaries is 12 &#x3bc;m or more. An average grain diameter of the ones of the Al crystal grains surrounded by the high-angle boundaries, ones of the Al crystal grains surrounded by the high-angle boundaries and the low-angle boundaries, and ones of the Al crystal grains surrounded by the low-angle boundaries, is 10 &#x3bc;m or less.

Aluminum alloy wire rod and producing method therefor

An alloying-element additive for adding an alloy element to a copper melt formed by melting a base material including a copper in manufacturing a copper alloy. The alloying-element additive includes a wire-shaped or plate-shaped core including an alloy element, and an outer layer material including a copper and covering the core. A weight ratio of the copper in the outer layer material and the alloy element in the core is in a range of weight ratio where the alloying-element additive has a liquid phase in a temperature range of not more than a melting point of the copper in a copper-alloy element phase diagram.

Alloying-element additive and method of manufacturing copper alloy

An aluminum alloy wire rod has a chemical composition consisting of 0.1 to 1.0 mass % of Co, 0.2 to 0.5 mass % of Zr, 0.02 to 0.09 mass % of Fe, 0.02 to 0.09 mass % of Si, 0 to 0.2 mass % of Mg, 0 to 0.10 mass % of Ti, 0 to 0.03 mass % of B, 0 to 1.00 mass % of Cu, 0 to 0.50 mass % of Ag, 0 to 0.50 mass % of Au, 0 to 1.00 mass % of Mn, 0 to 1.00 mass % of Cr, 0 to 0.50 mass % of Hf, 0 to 0.50 mass % of V, 0 to 0.50 mass % of Sc, 0 to 0.50 mass % of Ni, the balance being Al and inevitable impurities, and a metal structure including Al crystal grains, an Al&#x2014;Co&#x2014;Fe compound and an Al&#x2014;Zr compound. The Al crystal grains having a crystal grain diameter of 10 &#x3bc;m or less have an area ratio of 90% or more. The wire rod has a tensile strength of 150 MPa or more, an electrical conductivity of 55% IACS or more and when heated at 200 deg C. for 10 years, a strength of 90% or more of its initial state strength.

Aluminum alloy wire rod and producing method thereof

A Pb-free Sn-based material part of a wiring conductor is provided at least at a part of its surface, and the Sn-based material part includes a base metal doped with an oxidation control element. The oxidation control element is at least one element selected from a group consisted of P, Ge, K, Zn, Cr, Mn, Na, V, Si, Ti, Al, Li, Mg and Ca. The wiring conductor is reflow processed, such that at least one of the Sn and the oxidation control element is diffused to form an alloy.

Wiring conductor, method for fabricating same, terminal connecting assembly, and Pb-free solder alloy

A differential planetary gear apparatus has a single-pinion-type structure in which one planetary gear () is arranged in a radial direction and one or more planetary gears () are arranged in a circumferential direction in a region between a sun gear () and a ring gear (), a drive source (), a speed-change motive source (), and a driven unit () are disposed at any one of an input side (I), an output side (O), and a speed-change side (T), respectively, and the speed-change motive source () includes an electric motor.

Starting apparatus for differential planetary gear apparatus

A differential planetary gear apparatus has a single-pinion-type structure in which one planetary gear () is arranged in a radial direction and one or more planetary gears () are arranged in a circumferential direction in a region between a sun gear () and a ring gear (), a drive source (), a speed-change motive source (), and a driven unit () are disposed at any one of an input side (I), an output side (O), and a speed-change side (T). The speed-change motive source () includes an electric motor.

Differential planetary gear device, and differential planetary gear device starting device and starting method

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Tokyo, Japan

Takeshi Usami