| 摘要 |
PURPOSE:To easily and smoothly execute reforming work by executing cold plastic work to apply plastic strain on surface layer part of a copper plate, removing the mold copper plate from a mold back frame and executing the reforming maintenance. CONSTITUTION:In the case of reforming the surface of the mold copper plates 1, 4, after dismantling the mold 7, at first the cold plastic work is executed to the range containing parts, which receive the most heat influence during using the surface of the copper plate, under fitting the mold copper plates 1, 4 to the mold back frames 2, 5. After that, the mold copper plates 1, 4 are removed from the mold back frames 2, 5 to execute the reforming work, and after reforming the surface of the copper plate, again the mold 7 is assembled. In the fitted state before removing the mold copper plates 1, 4 from the mold back frames 2, 5 by executing the cold plastic work, the plastic strain is applied against the heat strain to relax the heat strain during using and also as the plastic strain to reverse direction to the heat strain is positively given, even in the case of removing the mold copper plates 1, 4, three dimensional recessed deformation is not developed to the copper plates 1, 4. |
