めっき

めっきの設計ガイドライン

寸法成長：
めっきは表面に材料を付加する。精密部品ではこれを考慮する必要がある。. 無電解ニッケル は均一にめっきされる（1:1の比率）ため、厳しい公差には好ましい。一方、 電気めっき は鋭い外部コーナーに堆積し、内部コーナーでは薄くなる。.

Drainage Holes:
Plating involves dipping parts into liquid tanks. Designs must include drainage holes to prevent liquid from getting trapped in blind pockets, which can cause contamination or “drag-out.”

Surface Defects:
Plating does 行わない hide surface defects; it highlights them. A scratch on the raw metal will be even more visible after shiny Nickel or Chrome plating. Parts should be polished prior to plating for a cosmetic finish.

Thread Fitment:
Plating will change the pitch diameter of threads. For thick plating (like Hard Chrome or thick Zinc), threads may need to be machined slightly undersized or re-tapped (chased) after plating.