3607 The Study of Thermal Deformation of Base Sheet around Cutting Edge made with Laser Beam
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This paper deals with thermal deformation of a base sheet caused by laser cutting to avoid the situation that the laser cutting interrupts by the deformation of the base sheet at unmanned processing. We aimed the clarification of the relationship between an overall deformation of a base sheet and the laser cutting orders experimentally. In experiments, we cut six kerfs on the SUS304 plate by CO_2 laser beam. We cut the plates by various cutting orders and measured the overall deformation of the cut plates. The plate bent downward when we cut from the inside kerf toward the outside kerf. On the other hand, the plate bent upward when we cut by the converse order. It can be expected that the deformation of the base plate can be reduced by appropriately setting the cutting order.
