| 摘要 |
This invention relates to an improvement in the method for repairing a damaged iron mold and similar casting devices by bridging the damaged area with a metal plate and securing the plate by means of fastening elements inserted into apertures in the plate and prepared recesses in the iron mold, the improvement comprising inserting expansible straddling dowels in said apertures and recesses, and expanding said dowels with a powder-force-actuated setting device.
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