| 摘要 |
The heat developing in the areas A x F can only lead to shrinkage in this region, since, given correct dimensioning, on the one hand the heat supplied remains restricted to this surface region and on the other hand the shrinkage cannot be transferred by the reduced web width into the supporting body if this shrinkage is sufficiently small compared with A. In addition, the ratio of the lengths E to B must be large enough to obtain the shrinkage-limiting effect. The ratio A to F must be sufficiently small, where for design reasons F must not be selected to be too large. To obtain as large a connecting area (3) as possible, the slot width S should be as small as possible.
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