Metal Casting FAQ: What OEM Buyers Ask Before Production
This metal casting FAQ answers what OEM buyers ask before production: casting processes, alloys, precision and leak testing, process choice, finishing, and the industries we serve at Cangzhou Weizhi.
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Frequently Asked Questions About Our Metal Casting Service
Q1. What casting services does Cangzhou Weizhi offer?
We run advanced casting lines with die-casting facilities. Our process list includes low-pressure casting for high-integrity parts. In practice, we handle structures from simple to complex. Casting also combines with stamping, CNC, welding, and finishing in the same factory.
Q2. Which casting materials do you offer?
We offer aluminum alloy, zinc alloy, copper alloy, and cast iron for casting projects. Material choice depends on part function, weight, and cost targets. So our engineers confirm the best alloy and grade during review. Broad material and size compatibility lets us match your application.
Q3. What precision and testing can cast parts achieve?
For one agricultural machinery project, we cast aluminum alloy crankshaft housings with low-pressure casting. We held hole diameter tolerance at ±0.1 mm and verified sealing with helium leak testing below 5×10⁻⁵ Pa·m³/s. The surface then received micro-arc oxidation. Final accuracy depends on material, structure, and process. So we confirm the achievable tolerance before production.
Q4. When should I choose casting over sheet metal or machining?
Choose casting when your part needs a complex structure that forms in one shot. It also cuts cost in mass production compared with machining from solid. Casting suits housings, frames, and load-bearing parts. Send us your drawing, and our engineers will compare casting with sheet metal and CNC for your part.
Q5. Do you machine or finish cast parts in-house?
Yes. Cast parts move through CNC machining, laser cutting, welding, and surface treatment service in our factory. For example, we applied micro-arc oxidation to the crankshaft housings for protection. Senior engineers also offer free project optimization to improve quality and control total cost.
Q6. Which industries do you cast for?
Our casting services mainly serve six industries: automotive, mechanical manufacturing, aerospace, rail transportation, hardware tools, and energy equipment. If your industry is not on this list, send us the drawing anyway. We will evaluate the part and recommend a process route.
