Nippondenso Co., Ltd.

Kabushiki Kaisha Toyota Chuo Kenkyusho

Yoshio Iwai

Noboru Komatsu

Keizo Takeuchi

Tatsuo Miura

Nobuyoshi Ota

Mikio Obayashi

Minoru Doi

Tadashi Yamanaka

A method of manufacturing mechanical parts from the raw material of metal scrap such as shavings and turnings of castings and steel and press chips of steel, includes the steps of: preparing the metal scrap including shavings and turnings; forming a billet by pressing metal scrap; heating the billet to the forging temperature, whereby a satisfactory plasticity is given to the billet for plastic deformation of metal scrap in the succeeding process; and forming the heated billet into a forged workpiece by use of a semi-closed forging die. The shape of the billet is determined such that, in this forging step, the respective portions of the billet are subjected to plastic deformation having a given plastic deformation rate, whereby material flow sufficient to generate metallic bond at the respective portions is caused, and burred portions are formed on portions of the forged workpiece mainly subjected to extrusion press during die-forging.

Method of manufacturing mechanical parts from metal scrap

An alloy for use as a fuse element in a high temperature fuse characterized by having a high resistance to corrosion and a melting point at a fixed temperature within a range of 1000.degree. to 1100.degree.C. The alloy consists of copper containing 10-14% aluminum and 0-2.5% of a second constituent which second constituent consists of one or more metals selected from a group consisting of nickel, manganese and iron. The alloy also has desirable hardness and good workability to enable fabrication of the alloy into a fused element.

Alloy for a high temperature fuse

Growing community of inventors

Nagoya, Japan

Yoshio Iwai