Which visible profile or surface difference makes your extrusion unacceptable? Define the decision with good, bad and marginal samples, then assess presentation and lighting under representative production conditions before selecting an inspection concept.
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Define the profile features and visible defects that matter, with drawings and examples at the acceptance limits. Record line speed, movement and the surfaces available to view. Trial the sensing arrangement against normal process variation and agree how defects are located, recorded and separated from accepted material.
An extrusion may need several different checks. Establish which dimensions or visible conditions determine acceptance, then show how each result will stay associated with the correct length, cut piece or reel as production continues.
Use drawings to identify the dimensions to measure and examples to define surface defects. A scratch, missing feature and dimensional change may need different viewing arrangements. State the acceptance limit and how it is independently checked before choosing the sensing method.
Mark every surface that must be inspected, including recesses, edges and the underside. Show supports and guides that obscure the view. Confirm the demonstrated coverage during a trial; a clear image of one face does not prove that the complete profile has been assessed.
Include speed range, vibration, lateral wander, surface finish and normal colour variation. Trial the optical arrangement where the line can maintain a stable view. Lighting and image timing should distinguish the required feature without turning harmless presentation variation into rejects.
Define where an inspection result is measured and where the affected material can be marked, cut or separated. Include travel between those points, stops and restart. The handling decision needs a traceable location or piece identity rather than only a timestamp on an image.
Agree what happens when the profile is outside the view, the image is obscured or the measurement is unavailable. Define whether affected material is held, marked or referred for another check. Treat unavailable inspection as its own state instead of a successful result.
Keep good, faulty and borderline samples with their independent acceptance decisions. Challenge the system across the proposed operating range and record missed defects and unnecessary rejects separately. Review recipes when the profile, finish, tooling or presentation changes.
Use the selection guide to organise the comparison, then send the application details for review.
Read the extrusion inspection process and defect-location guide to connect the optical decision with the material that must be held or separated.
The right choice changes with visible defect or measurement definition for profile & surface inspection of extrusions, good, bad and marginal sample range, your line layout and required results.
Carry the application decisions into a documented review and an agreed test or inspection plan.
Identify dimensions, defects, surfaces and independent acceptance methods.
Check lighting, speed, movement and the least visible features.
Prove tracking through stops, cutting and the planned handling response.
Retain samples, recipes, challenge results and any features requiring a separate test.
Your final solution for profile and surface inspection of extrusions must reflect the law, current standards and site-specific risks that apply to your installation.