What is the term used for lightly tapping the bottom of the base of both mold shoes with a hammer during the welding process?

The term describing the action of lightly tapping the bottom of the base of both mold shoes with a hammer during the welding process is indeed known as "Orgo." This technique serves a crucial purpose in thermite welding by helping to ensure that the mold sections are properly seated and aligned, minimizing gaps that might otherwise lead to defects in the weld. Proper alignment is essential for creating a uniform joint and achieving the expected mechanical properties in the finished weld.

While the other terms may relate to different aspects of the welding process, they do not accurately describe the action of tapping the mold shoes. "Crucible" typically refers to the container in which the thermite reaction occurs, while "Preparation" relates to the steps taken before the welding process begins, such as cleaning and positioning the workpieces. "Alignment" does emphasize the importance of correct positioning but does not specifically refer to the action of tapping with a hammer. Therefore, "Orgo" is the correct and specific term for this action within the context of thermite welding.