Froming method of particle, forming method and formed body obtained by the method

Abstract

A method for forming a spherical carbon body from carbon powder and is disclosed. Said spherical carbon body has uniform density and no wrinkles on its surface. Its apparatus is composed of upper and lower punch head and a die in which carbon powder is filled.

Description

Technical field [0001] The present invention relates to a powder and granular forming device, a method for forming a powder and granular body using the forming device, and a formed body obtained by the forming method. Specifically, it relates to no stripes or wrinkles, surface and core A molded body with a small difference in molding density of the part is used for a molding device and a molding method for obtaining such a molded body. Background technique [0002] For example, take carbon products as an example. Carbon products have excellent heat resistance, corrosion resistance, thermal conductivity, electrical conductivity, self-lubricating properties, etc., and are widely used in metallurgy, electrical discharge machining, semiconductor, atomic force, sliding and other industries. Among them, electrical and mechanical brushes that utilize sliding properties and self-lubricating properties are used in various fields. [0003] Hereinafter, electric and mechanical brushes will ...

AI Technical Summary

Problems solved by technology

Even if cracks, etc. are not generated, the bulk density in the upper and lower parts, and the core is not uniform, and the strength is low, so it is not suitable for use as a carbon brush

Carbon brushes with uneven volume density are prone to wear compared with carbon brushes with uniform volume density in the upper, lower, and core parts, and have the disadvantages of poor rectification performance and short brush life.

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