| 简介 |
PROBLEM TO BE SOLVED : To provide a spheroidizing agent of graphite with which the graphite spheroidizing agent can be spheroidized to the graphite in good condition while restraining the formation of chunky graphite.
SOLUTION : The graphite spherodizing agent is composed of silicon, magnesium, calcium and rare earth elements, in which the graphite spherodizing agent contains 0.6-3.0 mass% rare earth elements and 1.3-4.0 mass% calcium, respectively, relative to the total amount thereof, and percentage of lanthanum in the rare earth elements is 50 mass% or more.
COPYRIGHT : (C)2007, JPO&INPIT |
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