Casting Services

• Die Casting: High-Pressure Precision for Complex Parts

  How It Works: Molten metal (aluminum, zinc, magnesium) is injected into CNC-machined steel dies at 1,000–4,000+ tons of pressure, forming parts with ±0.05mm tolerance and Ra 1.6μm surface finish—no secondary machining needed for most applications.

  Key Advantages :

  •Rapid Cycle Times: 5–60 seconds per part, perfect for automotive components (engine mounts, transmission cases) and 5G hardware (heat sinks, connectors).

  •Material Efficiency: 98% yield via recyclable runners/gates, reducing waste compared to subtractive manufacturing.

  •Design Freedom: Undercuts, threads, and wall thicknesses as thin as 0.8mm—ideal for aerospace brackets and IoT device enclosures.

  When to Use: Medium to high volumes (500–100,000+ parts). Hot chamber for zinc (low melting point, cost-effective); cold chamber for aluminum (high strength, heat resistance).

• Sand Casting: The Versatile Workhorse of Metalcasting

  Industry Staple: Used in 70% of global casting production, from heavy machinery parts (tractor engine blocks) to artisanal sculptures.

  Process Breakdown:

  1.Pattern (wood/metal) creates a mold cavity in sand (green sand or resin-bonded).

  2.Molten metal (iron, steel, aluminum) poured into the mold; solidifies in 30 minutes–2 hours.

  3.Sand removed; part undergoes shot blasting/grinding for finish.

  Why It’s Popular (High Search Queries):

  •No Tooling Limits: Affordable for low volumes (1–100 parts) and large components (up to 10 tons).

  •Metal Compatibility: Works with all alloys, including ductile iron and bronze.

  •Design Flexibility: Complex cores for hollow structures (valve bodies, pump housings).

  Limitations: Surface finish (Ra 12.5–50μm); ideal for parts requiring machining or coating.

• Investment Casting: Lost-Wax Precision for Intricate Geometry

  The Art of Detail: Create parts with 0.2mm wall thicknesses and 0.1mm feature sizes—perfect for turbine blades, medical implants, and jewelry.

  Process Steps (Trending Search Terms):

  1. Wax pattern 3D-printed or injection-molded; assembled into “trees.”

  2.Ceramic shell applied (5–10 layers); wax melted out (“lost wax”).

  3.Stainless steel, cobalt-chrome, or aluminum poured into the shell; cooled and de-shelled.

  Key Benefits:

  •No Draft Angles Needed: Complex internal features (crossed holes, thin webs) achievable without secondary operations.

  •High-Temp Resistance: Suited for aerospace superalloys (Inconel, Hastelloy) and medical-grade titanium.

  •Surface Finish: Ra 1.6–3.2μm, meeting aerospace AS9100 and medical ISO 13485 standards.

  Best For: Medium volumes (50–5,000 parts) and high-precision applications.

• Centrifugal Casting: Rotational Force for Uniform Cylinders

  How It Works: Molten metal spun at 300–3,000 RPM in a horizontal/vertical mold, forcing density outward and impurities to the center—eliminating porosity in pipes, bearings, and gun barrels.

  Process Advantages (Industrial Search Leaders):

  •Coreless Design: Hollow parts (valve stems, railroad wheels) formed without internal cores, reducing tooling costs.

  •Mechanical Consistency: Grain structure aligned via centrifugal force, boosting tensile strength by 15–20%.

  •Material Savings: Near-net shape reduces machining by 50% vs. traditional casting.

  Ideal For: High-volume production (10,000+ parts) of symmetrical, cylindrical components in gray iron, copper-nickel, and aluminum alloys.

Metal Casting FAQ

• Which metals are available for casting in your processes?

  We handle an extensive array of metals and alloys, such as carbon steel, stainless steel, aluminum, zinc, brass, and additional materials. The selection of metal combined with the part's geometric design dictates the most appropriate casting method..

• Is KINGMETAL a direct manufacturer?

  Yes, KINGMETAL is a Chinese metal manufacturing facility with certifications including ISO 9001, IATF 16949, and BSCI. Founder Zhiyu Tu brings over two decades of experience in the manufacturing industry. We operate three production sites in China, totaling 20,000 square meters of facility space—this infrastructure allows us to scale production capacity without compromising quality or extending lead times.

• How do I choose between die casting and sand casting?

  Consult our engineers. 

  Key factors:

  •Volume: Die casting for 500+ parts; sand casting for 1–500 parts.

  •Geometry: Complex details? Investment casting. Large size? Sand casting.

  •Budget: High upfront cost for die casting tools; low initial cost for sand casting patterns.