Monitoring Resistance Welding for Production Success

This article is a technical report that outlines key concepts in monitoring resistance welding and presents three real-world case studies demonstrating the value of using weld monitors in production environments. It describes how small changes in material, tooling, equipment performance, or process settings can disrupt operations and halt production. The report explains that traditional destructive audits can be supplemented with real-time monitoring tools, which provide insights into the welding process and enable quick corrective actions. The document details the fundamentals of resistance welding, including the influence of electrical and mechanical factors on weld quality. It also discusses the importance of setting and using limits for monitoring key variables such as current and voltage. The case studies illustrate how waveform analysis can diagnose issues like intermittent cold welds, equipment performance instability, and weld process troubleshooting, highlighting the benefits of real-time monitoring for maintaining high weld quality.