| 摘要 |
PROBLEM TO BE SOLVED: To provide a working method, a working device and a working facility for a logic plate capable of improving durability and pressure resistance in a plate joint part, improving the working efficiency, and realizing further miniaturization. SOLUTION: A welding and beveling machine 22 forms a welding and beveling groove 21 in the plate 2 over the whole circumference of a fluid flow passage groove 8. A welding machine 23 welds the welding and beveling groove 21 to weld joint surfaces 2a and 3b of the plates 2 and 3 to each other over the whole circumference of the fluid flow passage groove 8 to connect the plates 2 and 3 to each other. Or, a frictional agitating and welding machine welds the joint surfaces 2a and 3b of the plates 2 and 3 to each other over the whole circumference of the fluid flow passage groove 8 to connect the plates 2 to 3 without machining the welding and beveling groove 21. |
