# Give projection welding a clearer production record. Understand projection-welding visibility through component identity, joining sequence, tooling history, process observations and quality evidence. Canonical: https://vieox.com/insights/robotic-welding/projection-welding/ Publisher: VIEOX Published: 2026-10-20 Updated: 2026-10-20 ## What should be visible when a projection-welding concern is investigated? Identify the component and joint, the applicable setup, the recorded operation and the relevant tooling history. Keep the process observation connected to the examination or test that informs acceptance. The resulting record should help a specialist establish what happened without treating a machine-complete signal as proof of joint performance. Projection welding deserves its own operating perspective. A record that identifies only the machine and a passing cycle can leave the team without the component, tooling or sequence needed to examine a concern. A clearer account follows the actual joining operation. ## Distinguish projection welding from spot welding In resistance projection welding, raised features concentrate the current and force at the intended joining locations. Resistance spot welding localises the joint through the electrode contact arrangement. The shared resistance-welding family does not make the two operating records interchangeable. Sources: [1](https://www.twi-global.com/technical-knowledge/faqs/what-is-resistance-welding) ## Recognise the component’s role TWI explains that projection geometry needs to support the initial force and the intended weld formation. Projections may be formed in sheet or incorporated in solid components such as suitable nuts and studs. Component identity and the relevant drawing or specification therefore belong in a meaningful process review. Sources: [2](https://www.twi-global.com/technical-knowledge/faqs/faq-what-projection-profile-suits-projection-welding) ## Trace feeding, positioning and joining separately Where feeding or robotic handling forms part of the cell, ask which event confirms component presentation, which confirms the joining sequence and which records the final disposition. A feeder retry and a welding retry should remain distinguishable. Otherwise, a stable total cycle count may conceal a recurring question at one stage. Keep approved setup and programme references readable alongside the part identity. Link relevant tooling checks or changes to the recorded period. If a trace only covers a complete cycle containing several locations, present that scope honestly instead of drawing an unsupported conclusion about an individual projection. ## When two production periods are not equivalent Hypothetical example: a team compares results before and after a tooling change. The periods also contain different component deliveries and an altered inspection sample. By separating those contexts, the team recognises that the original comparison cannot isolate the effect of the tooling work. The follow-up is now clearer: confirm the component and setup records, establish a comparable reference and ask the qualified specialists what additional examination is appropriate. The value is not a dramatic automatic diagnosis. It is a review that does not lose time defending an explanation the available evidence cannot support. ## Connect follow-up to the original concern Record what the team checked, what it found and what changed as a result. If the concern involved feeding, make that distinction visible to maintenance. If it involved a quality requirement, preserve the responsible quality decision. A shared timeline is most useful when it respects those different responsibilities. Bring VIEOX one recurring projection-welding review: perhaps an unexplained retry, an uncertain component history or an inspection that is difficult to relate to production. Together we can frame the information question, identify what is already available and define a practical way to judge whether a clearer operating record helps. ## Practical starting points - Identify the joint, component and applicable setup or drawing reference. - Distinguish feed retries, positioning events and joining attempts. - Keep relevant tooling checks and changes connected to the production period. - Verify the scope of each process trace and inspection result. - Preserve the reason and responsibility for the next review or authorised action. ## Questions, answered ### Does projection welding always require a robot? The joining process and the method of component handling are separate choices. Describe the installed arrangement accurately, including any robotic loading or transfer, instead of assuming every projection-welding machine is a robotic system. The operating record should follow the actual cell. ### Should multiple projections share one result? Use the result at the level supported by the equipment, examination method and applicable requirements. If the record represents a complete joint or cycle, make that scope visible. An individual-location conclusion needs evidence that resolves that location. ## Sources and further reading - [TWI — What is Resistance Welding?](https://www.twi-global.com/technical-knowledge/faqs/what-is-resistance-welding) - [TWI — What projection profile suits projection welding?](https://www.twi-global.com/technical-knowledge/faqs/faq-what-projection-profile-suits-projection-welding) ## Related reading - [Robotic welding: the overview](https://vieox.com/insights/robotic-welding/) - [Laser welding](https://vieox.com/insights/robotic-welding/laser-welding/) - [Quality investigations](https://vieox.com/solutions/quality/) - [Say hello to VIEOX](https://vieox.com/contact/)