Final answer:
Resistance Seam Welding (RSEW) is a welding process that uses electrical resistance to join metal materials without melting the base material. (option D)
Step-by-step explanation:
Resistance Seam Welding (RSEW) is a welding process that uses electrical resistance to join metal materials. It is commonly used for thin materials such as sheets and foils. Unlike other welding processes, RSEW does not involve melting the base material. Instead, the heat generated by the electrical resistance of the materials forms a continuous seam weld.
Options A, B, and C do not accurately describe Resistance Seam Welding. RSEW typically uses non-consumable electrodes, creates intermittent spot welds along a seam, and is not limited to thin materials, but rather is often applied to a range of material thicknesses.
The main characteristic of Resistance Seam Welding (RSEW) is that it produces welds without melting the base material, making it a valuable process for certain welding applications.