Although many MetalForming readers recognize resistance welding (RW) as a common value-added secondary operation, especially for customers in the automotive industry, many do not fully understand the process. That's the goal of this new column. Recognized as the fastest and least-expensive process for joining sheetmetal parts, RW looks deceptively simple. Yet, failing to precisely control the numerous process variables can result in welds that may look good but fall apart under load. A properly made resistance weld should be stronger than the parent material.
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