Investment Casting Wall Thickness Range & Precision Control
Investment casting (lost-wax casting) is known for high precision, excellent surface finish, and suitability for complex structures. Wall thickness directly affects product strength, dimensional accuracy, and long-term reliability.
I. Wall Thickness Range (Main Materials)
Wall thickness varies depending on material characteristics and process capability:
| Material Type | Minimum Wall Thickness | Optimal Range | Maximum Wall Thickness |
|---|---|---|---|
| Stainless Steel | 1.5–2 mm | 3–12 mm | up to 25 mm |
| Carbon / Alloy Steel | 2 mm | 4–15 mm | up to 30 mm |
| Copper / Bronze Alloys | 1.8 mm | 3–10 mm | up to 20 mm |
Design Principle:
Uniform wall thickness is recommended (deviation ≤10%).
Too thin → misrun, cold shut, cracking
Too thick → shrinkage, porosity, increased cost
II. Wall Thickness Precision Control
A full-process control system ensures stable and reliable casting quality:
-
Design Optimization
Simulation analysis to optimize filling and solidification behavior -
Wax Pattern & Shell Control
High-precision wax injection + stable ceramic shell building -
Casting Process Control
Accurate pouring temperature and controlled cooling conditions -
Inspection System
Standard tolerance: ±0.05–0.2 mm, ensuring high dimensional consistency
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