the distinctions between sand casting and Investment Casting скачать в хорошем качестве

the distinctions between sand casting and Investment Casting

https://www.welongcasting.com/ Contact Us: [email protected] Today, we will thoroughly analyze the distinctions between sand casting and Investment Casting. Process Principle: Sand Casting: Uses a sand mold (made of sand + binder) as a disposable mold for direct metal pouring.Mold Material: Sand (silica, zircon) + binder (clay, resin).Production Cycle:Short (hours to days), suitable for rapid small batches. Cost:Low (inexpensive materials, reusable molds).Precision & Surface Finish:Lower precision (±1–3 mm tolerance). Rough surface (Ra 12.5–50 μm), requires post-machining.Material Compatibility:Cast iron, carbon steel, aluminum alloys (suitable for lower-melting-point metals).Part Complexity:Suitable for simple to moderately complex parts (limited by mold separation).Typical Applications:Engine blocks, heavy machinery bases, pipe fittings. Architectural metal components, rough art castings. Investment Casting: Process Principle :Creates a cavity by melting a wax pattern, then pours molten metal into the ceramic shell.Mold Material:Wax pattern + ceramic slurry (colloidal silica/ethyl silicate) + refractory sand.Production Cycle:Long (days to weeks), requires multiple precise steps. Cost:High (costly wax patterns and ceramic shells, complex process).Precision & Surface Finish:High precision (±0.1–0.5 mm tolerance). Smooth surface (Ra 3.2–12.5 μm), often ready for use.Material Compatibility:Stainless steel, titanium alloys, superalloys, precious metals (ideal for high-melting-point or high-value materials).Part Complexity:Capable of extremely complex parts (e.g., hollow structures, fine details).Typical Applications:Aerospace turbine blades, medical implants, jewelry. Precision instrument parts, art sculpture replicas.