| 摘要 |
A new process is described in which an inoculation insert is made of a mix of inoculant of ferroalloys, additive of cryolite and binder of polyvinyl butyral. All the materials state in form of dry and loose powder at room temperature. When heat is provided the binder will change thermally cured and set and make the mix agglomerated by chemical bonding. The insert proves excellent compression strength and surface hardness that can ease special handling care during transportation and storage. The insert may be an individual article or impregnated inside the open cells of ceramic filters as an assembly by virtues of a great deal of flexibility provided by the process to fit unique requirement of application. The consistency can be greatly increased with the insert located in the runner system of the mold that the molten metal, particularly iron, can be inoculated.
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