| 摘要 |
The invention relates to workpiece control shaping of metal, preferably in the form of plates or bands, which metal workpiece (1) has a high tensile limit, preferably above 1000 N/mm<2> and is intended to be further shaped. Along predetermined folding notches or zones (2, 3) across the workpiece (1) the tensile limit of the material is reduced by heating to a tensile limit, which is substantially lower than that of adjacent base material, whereafter the workpiece (1) directly or when it has got cold is subjected to subsequent bending-, folding-, or shaping operations to provide a two- or three-dimensional shape/extension of the workpiece (1) along the treated folding notches or zones (2, 3).
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