PLATE-SHAPED BODIES, MANUFACTURING METHOD THEREFOR, GAS TURBINE COMBUSTOR, AND GAS TURBINE

摘要

A plate-like-object manufacturing method, plate-like objects, a gas-turbine combustor, and a gas turbine, in which degradation in the cooling performance can be suppressed, the time required for manufacturing a gas-turbine combustor can be shortened, and deterioration of the working environment can be prevented are provided. A plate-like-object (33) manufacturing method includes a step of forming a plate-like object (33U, 33R) by stacking a plurality of plates (41, 42) and arranging a plurality of channels (51, 52), through which a cooling medium flows, side-by-side between the plurality of plates (41, 42); and a step of arranging a plurality of the plate-like objects (33U, 33R) side-by-side in a direction in which the channels (51, 52) are arranged, butting the plurality of plate-like objects (33U, 33R) against each other, and performing welding at an abutment section (63). The channels (52) adjacent to the abutment section (63) extend along the abutment section (63) and have a greater dimension in the direction in which the channels (51, 52) are arranged, as compared with that of other channels (51).