Sharp Kabushiki Kaisha Corporation

Showa Denko K.k.

Showa Aluminum Corporation

Nichicon Corporation

Jin Zhang

Ryotatsu Otsuka

Takashi Tomita

Tohru Nunoi

Tomohiro Machida

Taro Kato

Tomoaki Yamanoi

Akira Koyama

Masato Akao

Tadao Fujihira

An aluminum material for electrolytic capacitor electrodes, the aluminum material having aluminum purity of 99.9% or more, consisting of: Si: 2 to 50 ppm; Fe; 2 to 50 ppm; Cu: 15 to 150 ppm; Zn: 1 to 80 ppm; Pb: 0.1 to 3 ppm; at least one of Zr and V: 11 ppm or more, a total content of the at least one of Zr and V being 11 to 100 ppm; and the balance being Al and impurities, wherein a content of B is controlled to be 2 ppm or less. In the aluminum material, Ti: 1 to 30 ppm, Mn group composition (at least one of Mn, Ga, Mg and Ca): 1 to 50 ppm in total, and In group composition (at least one of In, Sn, Sb): 1 to 30 ppm in total are selectively added. A method for manufacturing an aluminum foil for electrolytic capacitor electrodes according to the present invention, comprises the steps of: rolling the aforementioned aluminum material into a foil; and performing final annealing of the foil at the temperature of 430 to 580&#xb0; C.

Aluminum material for electrode of electrolytic capacitor and method for producing aluminum foil for electrode of electrolytic capacitor, and electrolytic capacitor

A metal purifying apparatus comprises a closed melting furnace equipped with a heater, molten metal holding crucible disposed within the furnace, a vertical hollow rotary shaft penetrating through a top wall of the furnace, a packing sealing off a clearance in the shaft penetrating portion of the top wall around the shaft, rotary drive means for rotatingly driving the shaft, a hollow rotary cooling body fixedly provided at a lower end of the shaft and having an interior space communicating with an interior space of the shaft, and a cooling fluid supply source for supplying a cooling fluid to the interior of the cooling body. The rotary shaft has disposed therein a cooling fluid discharge pipe with a lower end positioned below the top wall of the furnace. An outer periphery of the discahrge pipe and an inner periphery of the shaft are spaced apart from each other and define a space portion providing a cooling fluid supply channel for passing therethrough the cooling fluid to be supplied from the source to the interior space of the cooling body. The discharge pipe has an interior providing a cooling fluid discharge channel for discharging therethrough the cooling fluid supplied to the interior of the cooling body.

Apparatus for purifying metal

Growing community of inventors

Sakai, Japan

Jin Zhang