| 摘要 |
PROBLEM TO BE SOLVED: To provide a cork powder-containing parting agent which hardly falls from a die face and imparts suitable thermal insulation properties upon casting a lattice body for an electrode plate used for a lead battery, and which has a remarkably long life as a result, also which enables the molten metal of lead alloy to be uniformly spread to all the corners of the whole of the die, and enables the molten metal of the lead alloy to be solidified in a short period of time, and therefore achievs production of an extremely homogeneous lattice body for the electrode plate with remarkably high productivity by the synergistic action of the above effects. SOLUTION: In the cork powder-containing parting agent used for casting a lattice body for a lead battery electrode plate, the cumulative value of grains with a grain size of≥100μm in the cork powder is 1 to 10 mass%. COPYRIGHT: (C)2010,JPO&INPIT
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