SURFACE FINISHING · Diecasting Mold ENGINEERING RESOURCES
State what the finish needs to achieve
Appearance, corrosion protection, electrical contact and wear can lead to different finishing requirements. Identify the operating environment and which properties are required at the component level. Specify a coating or plating system and acceptance criteria rather than relying on a broad term such as protective finish.
Match the substrate and preparation
Alloy chemistry, surface condition and casting characteristics can influence the finished appearance. Blasting, polishing, cleaning and other preparation steps affect the result as well. Review the complete route with a representative component, particularly when the part has both cosmetic surfaces and functional interfaces.
Mark masking and dimensional requirements
Threads, bearing fits, grounding contacts and sealing faces may need masking or machining after finishing. Identify them in the drawing and include the expected finished dimensions. Coating thickness and build-up at edges should be considered where they affect assembly; a color reference alone does not define those interfaces.
Approve a repeatable reference
For visible parts, agree color, gloss, texture, viewing conditions and permitted variation. A representative approved sample can make production acceptance clearer. If adhesion, exposure or another test is required, define its method and limit in the project specification and record which operations and reports are included in the order.
Have a component in mind? Send your current model, drawing and requirements to [email protected] for a project discussion.
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