| 摘要 |
PURPOSE: A method for blasting calibrating molds is provided to easily control and take lower expenditure, especially in the form of chill tubes and ingot molds. CONSTITUTION: The method for blasting calibrating molds comprises the steps of: reinforcing a chill mold(1) in its wall thickness, at its end regions, by building-up welding; filling up bores(5) with a free-flowing material and tightly closing them at their ends; inserting a calibrating mandrel into the chill mold(1); covering the outer surface of the chill mold(1) with an explosive material; and subsequently igniting the explosive material, whereby the inner side(3) of the chill mold wall(2) is pressed against the calibrating mandrel. The bores(5) are fabricated over the entire length of the mold wall(2), opening out at its end faces(6,7).
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