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Sand Casting is a traditional metal casting process that involves creating a mold from compacted sand, then pouring molten metal into the cavity to form a desired shape.
Once the metal solidifies, the sand mold is broken apart to remove the final casting.
DEZE Technology provides a variety of casting services, and users can choose the appropriate casting process according to their needs.
If you don’t know which casting method is more suitable for your product, please contact us and our professional engineers will help you.
A pattern is a replica of the final part, slightly oversized to account for metal shrinkage during cooling.
It is usually made from wood, yas, los yog hlau.
The pattern is placed inside a molding box (lub ntsiab), thiab sand mixed with a binder (like clay or resin) is packed around it.
The mold is made in two halves:
Cores are sand shapes inserted into the mold to form internal cavities in the casting.
Molten metal is prepared in a furnace and poured into the mold through a sprue thiab runner system.
After pouring, the metal is allowed to cool and solidify inside the mold.
Once the metal has cooled, the sand mold is broken apart to retrieve the solid casting.
Excess material such as sprues, risers, and flash are removed by cutting or grinding.
Sand casting supports a wide range of ferrous and non-ferrous metals. The choice depends on the desired mechanical properties, corrosion kuj, hnyav, thiab nqi.
These metals contain iron and are commonly used for high-strength and structural applications.
| Khoom siv | Cov menyuam kawm qib | Cov Khoom Siv Tseem Ceeb | Tej kev siv |
|---|---|---|---|
| Grey cam khwb cia hlau | ASTM A48, EN-GJL-200/300 | Zoo heev castability, Dhuav Damping, Compressive lub zog | Cav thaiv, tshuab puag, vaj tse |
| Hlau Hlau | ASTM A536 (60-40-18), EN-GJS-400 | Toughness, ductility, Qeeb zog tsis kam | Crankshafts, iav, cov yeeb nkab fittings, tshuab hnyav |
| Carbon Steel | AISI 1020, AISI 1045, AISI 1060 | Siab zog, raug nqi, weldable | Structural parts, cov ncej, industrial tools |
| Hlau alloy | AISI 4140, 4340, ASTM A387, EN 34CrNiMo6 | Thaum tshav kub kub kuj, Ua kom muaj zog, improved wear resistance | Zog, tuag, pressure parts, aerospace |
| Stainless hlau | AISI 304, 316, 410, 420, Cf8, Cf8m | Zoo heev corrosion kuj, hygienic, siab zog | Food-grade equipment, li qub, TWJ CHAW, marine use |
These are metals without significant iron content, typically used for corrosion resistance and weight savings.
| Khoom siv | Cov menyuam kawm qib | Cov Khoom Siv Tseem Ceeb | Tej kev siv |
|---|---|---|---|
| Aluminium Alloys | A356, A319, 6061, LM6 | Lub teeb, corrosion-resistant, good conductivity, rov dua | Automotive, aerospace qhov chaw, electrical enclosures |
| Bronze (Cu-Sn) | C83600, C93200, Sae 660 | Excellent wear/corrosion resistance | Bushings, iav, marine Cheebtsam |
| tooj dag (Cu-Zn) | C36000, c37700 ua, CW614N | Zoo machinability, attractive finish, corrosion-resistant | Plumbing fixtures, decorative hardware |
| Tooj | C11000, C12200 | Outstanding electrical and thermal conductivity | Electrical connectors, cov davhlau ya nyob twg, bus bars |
| Zinc Alloys | Zamak 3, Zamak 5, ZA-8 | Tsawg melting point, excellent detail and surface finish | Complex small parts, die-cast components |
| Magnesium alloys | AZ91D, AM60 | Extremely lightweight, siab zog-rau-qhov hnyav piv | Aerospace, electronics housings, automotive panels |
Sand casting’s versatility and low tooling cost make it ideal for a broad spectrum of applications—from heavy industrial components to artistic pieces:
Cav thaiv, lub tog raj kheej taub hau, brake drums, kis kab mob tsev, suspension knuckles, and railway wheels.
Lub twj tso kua mis, lub cev valve, gearbox casings, compressor shells, and large machine bases.
Pump and compressor internals, refinery equipment housings, piping tees, lub tshob, thiab flanges.
Propeller hubs, rudder stocks, sea-water valve bodies, deck fittings (cleats, chocks), and anchor components.
Excavator buckets, bulldozer blades, crane sheaves, and structural castings for mining gear.
Turbine casings, steam-generator housings, pump volutes, and hydropower turbine parts.
Tractor housings, plowshares, combine-harvester components, and irrigation pump assemblies.
Statues, relief panels, fountains, ornamental railings, and façade elements.
Tsheb casting qhov chaw
Aircraft casting qhov chaw
Cov khoom siv roj thiab roj
Cov khoom siv tub rog casting qhov chaw
304 Stainless Steel Auto Parts
316 Stainless Steel Flanges
Auto parts
Hardware parts
Auto parts
CF8M Stainless Steel Pump parts
2205 Duplex Stainless Steel Machinery parts
Machinery parts
Sand casting is a metal-forming process where a pattern creates a cavity in a sand-binder mixture, into which molten metal is poured.
Tom qab solidification, the sand mold is broken away to reveal the finished part.
Nearly any metal can be sand-cast, including ferrous alloys (gray and ductile iron, carbon and alloy steels) and non-ferrous alloys (aluminium, tooj liab, tooj dag, tooj liab, zinc, thiab magnesium).
Typical dimensional tolerances are around ± 0.5 hli ib 100 mm of dimension, with surface finishes of Ra 6–12 µm.
Select sand casting for low-to-medium volumes, large or complex parts, rapid prototyping, or when low tooling cost is a priority—even if final parts require some machining.
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