Other

Kabushiki Kaisha Kobe Seiko Sho

Kobe Steel, Ltd.

Masahiro Murakami

Hironori Suzuki

Kazuhisa Fujisawa

Yoshikazu Seki

Hiroyuki Mitani

Yasuhiro Hashimoto

Hirofumi Houjou

Akihiko Kagawa

Takehiko Hayami

Jiro Chosokabe

Hitoshi Sakuma

Hirotaka Hanaoka

Kunihiro Yoshioka

Tsukasa Yuri

Disclosed is a powder filling method in which powder is filled in a powder box having a discharging port at its bottom segment, the powder box is moved over a cavity to be targeted while being slid on a die plate, thereafter the powder in the powder box is dropped into the cavity by its own gravitational force and filled there, wherein the powder in the powder box is applied with a mechanical agitation when the powder in the powder box is at least dropped into the cavity in the powder filling method for filling the powder in the powder box while being dropped at least into the cavity.

Powder filling method and powder filling apparatus

A mixed powder useful as a starting material for dust core comprises a uniform mixture of a soft magnetic powder and a binder resin so that the resultant dust core has an electric resistance capable of suppressing an eddy current between the soft magnetic powdery particles and high mechanical strength at room temperatures and also at high temperatures. In the mixed powder, the binder resin is made of a phenolic resin powder which has a methylol groups in the molecule and preferably has an average particle size of 30 &mgr;m or below and wherein when the phenolic resin powder is dissolved in boiling methanol in large excess, a content of an undissolved matter is at least 4 wt % based on the total of the phenolic resin. A dust core obtained from the mixed powder and its fabrication method are also described.

Powder for high strength dust core, high strength dust core and method for making same

Disclosed is a powder metallurgical mixed powder capable of preventing the defective dispersion, that is, the segregation of physical property improving powders and a lubricant powder without reduction in lubricity, and of suppressing the generation of dust upon handling of powders; and a powder metallurgical binder capable of realizing such a mixed powder. The binder including a copolymer containing monomer components of ethylene and propylene, which may be combined with a liquid binder having a specified composition as needed, is added to a powder metallurgical raw powder.

Powder metallurgical binder and powder metallurgical mixed powder

A powder mixture for powder metallurgy comprising a starting powder for powder metallurgy containing a metal powder, a powder of physical property improving ingredients and a lubricant and, blended therewith as a binder, a synthetic styrenic rubber copolymer comprising:

Powder mixture for powder metallurgy and binder therefor

This invention relates to improvements in a roller device by which articles placed on a roller face are moved in a desired direction in a plane, and composed of a main body, a plurality of rollers mounted around the periphery thereof with a cylindrical boss included in the main body and adapted to receive a shaft for mounting a plurality of the devices.

Roller device

Growing community of inventors

Takasago, Japan

Masahiro Murakami