How are mechanized PAC torches designed to be mounted?

Mechanized PAC (Plasma Arc Cutting) torches are specifically designed to be mounted on automatic carriers. This design allows for precise control and movement of the torch during the cutting process, enhancing accuracy and quality in fabricating operations. Automatic carriers can be programmed or controlled to follow specific cutting paths, making them ideal for repetitive tasks and complex geometric shapes.

Using automatic carriers with mechanized PAC torches reduces the potential for human error and increases efficiency in cutting operations. It allows for adjustments in speed and feed rate automatically, providing a consistent cutting output. This setup is particularly beneficial in industrial settings where high-volume production is required.

Handheld supports, fixed positions, and portable frames, while they may have their applications in other settings, do not provide the same level of automated precision and control necessary for mechanized plasma arc cutting, which is the reason why the correct answer emphasizes automatic carriers.