Kabushiki Kaisha Kobe Seiko Sho

Masanobu Aoki

Tsuneharu Masuda

Tatsuhiko Noyori

Masakazu Ueda

Osamu Takezoe

Kenji Hayashi

Yoshio Doi

Yoshinori Yasuda

Takashi Kajima

Kazuhiko Asano

Makoto Shimata

An abrasion resistant aluminum alloy characterized in that the aluminum alloy has a chemical composition basically containing 7.5-15 wt % of Si, 3.0-6.0 wt % of Cu, 0.3-1.0 wt % of Mg, 0.25-1.0 wt % of Fe, 0.25-1.0 wt % of Mn, and the balance of Al and impurities, and an alloy structure with a primary Si crystal size smaller than 80 microns, a Si-Mn-Fe compound grain size smaller than 120 microns, and an alpha-Al phase size smaller than 100 microns.

Abrasion resistant aluminum alloy

A mandrel cleaning device capable of automatically performing cleaning operation in an extrusion press of the type which has a pressurizing stem for pressing a billet in a container toward a die and a mandrel axially slidable in and relative to the pressurizing stem for determining the internal shape of a hollow extruding material, the mandrel cleaning device having a rotary mechanism for rotating the mandrel about its axis, a grinder mechanism adapted to grind a tip portion at the fore end of the mandrel, and a transfer mechanism for moving the grinder mechanism toward and away from the mandrel.

Mandrel cleaning device for extrusion press

Growing community of inventors

Shimonoseki, Japan

Masanobu Aoki