Design Element | Suggestions (Industry Standard Values) | Reasons and Benefits |
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Wall Thickness | Typical range: 0.8 - 3.0 mm (ideal ~1.5 mm) | Optimizes metal flow, reduces porosity, saves material, and ensures dimensional stability. |
Corner Radii | Minimum internal radii: 0.5 - 1.0 mm | Minimizes stress concentration, improves metal flow, and reduces defects. |
Draft Angles | Recommended draft: 0.5° - 2° per side | Facilitates easy part ejection, reduces mold wear, and maintains excellent surface finish. |
Fillets | Internal fillet radii: at least 0.5 mm | Enhances strength, reduces stress points, and improves casting integrity. |
Hole Sizes | Minimum hole diameter: 0.8 - 1.0 mm | Ensures proper mold filling and prevents incomplete casting or defects. |
Undercuts | Minimize or design with sliders/cores | Reduces mold complexity and cost, preventing casting defects. |
Surface Finish | Typical surface roughness: Ra 1.6 - 3.2 µm | Provides superior cosmetic appearance, reducing secondary finishing costs. |
Tolerances | Typical linear tolerance: ±0.05 mm per 25 mm | Offers excellent dimensional precision and reduces secondary machining. |
Text and Logos | Minimum text/logo depth/height: ≥ 0.3 mm | Ensures clear readability due to fine-detail casting capability. |
Ribs and Gussets | Thickness approximately 50 - 70% of adjacent walls | Enhances strength and rigidity without excessive material thickness or shrinkage issues. |
Parting Line | Keep simple and position strategically | Minimizes flash and visual imperfections, simplifying trimming and finishing processes. |
Inserts | Minimum embedment: 1.5 - 2 times insert diameter | Ensures secure integration, reducing risk of displacement and improving mechanical performance. |
Machining Allowance | Typical allowance: 0.3 - 0.5 mm | Sufficient for final precision machining without excessive material waste. |