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Sand Casting Service

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Sand Casting Service

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.

What is Sand Casting

DEZE-Sand-Casting-Service

Detailed Steps of Sand Casting

Paghimo sa Sumbanan

1. Paghimo sa Sumbanan

A pattern is a replica of the final part, slightly oversized to account for metal shrinkage during cooling.

It is usually made from wood, plastik, o metal.

  • Katuyoan: To create the mold cavity in the sand.
  • Mga tipo: Split pattern (for complex parts), match-plate pattern, or cope-and-drag patterns.
  • Shrinkage allowance: Typically 1–3% depending on the metal.
Paghulma sa Paghimo

2. Paghulma sa Paghimo

The pattern is placed inside a molding box (flask), ug sand mixed with a binder (like clay or resin) is packed around it.

The mold is made in two halves:

  • Cope (top half) ug Drag (bottom half).
  • The pattern is removed, leaving a cavity in the shape of the part.
  • If required, cores are inserted into the mold to form internal features or hollow sections.
Core-Making

3. Core nga Paghimo (If Applicable)

Cores are sand shapes inserted into the mold to form internal cavities in the casting.

  • Made from core sand, which is more durable and heat-resistant.
  • They must be accurately placed and often supported with chaplets (metal spacers).
  • Cores are removed after casting, usually broken out and discarded.
Metal Melting and Pouring

4. Metal Melting and Pouring

Molten metal is prepared in a furnace and poured into the mold through a sprue ug runner system.

  • The system includes pultahan (to direct flow), risers (to compensate for shrinkage), ug vents (to let gases escape).
  • Metals used: puthaw nga puthaw, aluminyo, puthaw, bronse, ug uban pa.
  • Care is taken to avoid turbulence, gas entrapment, and inclusions during pouring.
Pagpabugnaw ug Solidification

5. Pagpabugnaw ug Solidification

After pouring, the metal is allowed to cool and solidify inside the mold.

  • Cooling rates affect grain structure and mechanical properties.
  • Proper riser design ensures that metal shrinkage is compensated to avoid internal voids.
  • The solidification time depends on part thickness and metal type.
Shakeout and Mold Removal

6. Shakeout and Mold Removal

Once the metal has cooled, the sand mold is broken apart to retrieve the solid casting.

  • This step is called pag-uyog.
  • The sand can often be recycled after cooling and screening.
  • The casting is rough at this point and may have residual sand or oxide layers.
Paglimpyo ug Pagtapos

7. Paglimpyo ug Pagtapos

Excess material such as sprues, risers, and flash are removed by cutting or grinding.

  • The surface may be nalimpyo by shot blasting, tumbling, or pickling.
  • Machining is performed as needed to achieve final tolerances.
  • Surface treatments or coatings (e.g., dibuho, pagpasinaw) mahimong magamit.

What materials are used in sand casting?

Sand casting supports a wide range of ferrous and non-ferrous metals. The choice depends on the desired mechanical properties, pagbatok sa corrosion, gibug-aton, ug gasto.

Ferrous Metals

These metals contain iron and are commonly used for high-strength and structural applications.

Materyal Grado Pangunang mga Properties Kinaandan nga mga Aplikasyon
Grey cast iron Astm A48, EN-GJL-200/300 Maayo kaayo nga castability, Pag-agos sa Vibration, Kusog sa Kusog Mga bloke sa makina, mga base sa makina, mga balay
Ductile Iron ASTM A536 (60-40-18), EN-GJS-400 Pagkagahi, ductility, Pagkabug-at nga Pagsukol Crankshafts, mga gear, pipe fittings, bug-at nga makinarya
Carbon Steel AISI 1020, AISI 1045, AISI 1060 Taas nga kusog, gasto-epektibo, weldable Mga bahin sa istruktura, mga shaft, industrial tools
Alloy nga Steel AISI 4140, 4340, ASTM A387, EN 34CrNiMo6 Pagbatok sa kainit, Gahi, improved wear resistance Salamat, mamatay, pressure parts, aerospace
Stainless Steel AISI 304, 316, 410, 420, Cf8, Cf8m Maayo kaayo nga pagsukol sa corrosion, hygienic, taas nga kusog Food-grade equipment, mga balbula, mga bahin sa bomba, marine use

Non-Ferrous Metals

These are metals without significant iron content, typically used for corrosion resistance and weight savings.

Materyal Grado Pangunang mga Properties Kinaandan nga mga Aplikasyon
Aluminum Alloys A356, A319, 6061, LM6 Gaan ang timbang, corrosion-resistant, good conductivity, recyclable Automotive, mga bahin sa aerospace, electrical enclosures
Bronse (Cu-Sn) C83600, C93200, Sae 660 Excellent wear/corrosion resistance Bushings, mga gear, mga sangkap sa dagat
Brass (Cu-Zn) C36000, C37700, CW614N Maayong machinability, attractive finish, corrosion-resistant Plumbing fixtures, decorative hardware
Copper C11000, C12200 Outstanding electrical and thermal conductivity Electrical connectors, mga terminal, bus bars
Zinc Alloys Zamak 3, Zamak 5, ZA-8 Ubos nga punto sa pagkatunaw, excellent detail and surface finish Complex small parts, die-cast components
Magnesium Alloys AZ91D, AM60 Extremely lightweight, taas nga kusog-sa-timbang nga ratio Aerospace, electronics housings, automotive panels

Advantages of DEZE Sand Casting

Advantages of DEZE Sand Casting
  • 1. Cost-Effective for Low to Medium Production
  • 2. Wide Range of Material Compatibility
  • 3. No Size Limitations
  • 4. Complex Geometries Possible
  • 5. Short Lead Time
  • 6. Recyclable Materials
  • 7. Suitable for a Variety of Surface Finishes

Applications of Sand Casting

Sand casting’s versatility and low tooling cost make it ideal for a broad spectrum of applications—from heavy industrial components to artistic pieces:

Automotive & Transportation

Mga bloke sa makina, mga ulo sa silindro, brake drums, transmission housings, suspension knuckles, and railway wheels.

Industrial Machinery & Equipment

Mga balay sa bomba, mga balbula nga lawas, gearbox casings, compressor shells, and large machine bases.

Oil & Gas & Petrochemical

Pump and compressor internals, refinery equipment housings, piping tees, siko, ug flanges.

Marine & Shipbuilding

Propeller hubs, rudder stocks, sea-water valve bodies, deck fittings (cleats, chocks), and anchor components.

Construction & Heavy Equipment

Excavator buckets, bulldozer blades, crane sheaves, and structural castings for mining gear.

Power Generation

Turbine casings, steam-generator housings, pump volutes, and hydropower turbine parts.

Makinarya sa Agrikultura

Tractor housings, plowshares, combine-harvester components, and irrigation pump assemblies.

Art, Architecture & Decorative

Statues, relief panels, fountains, ornamental railings, and façade elements.

Natad sa awto

Natad sa awto

Mga bahin sa paghulma sa awto

Natad sa aerospace

Natad sa aerospace

Mga bahin sa paghulma sa ayroplano

Natad sa pagpalambo sa lana ug gas

Natad sa lana ug gas

Mga accessories sa ekipo sa lana ug gas

Natad sa militar

Natad sa militar

Mga bahin sa paghulma sa kagamitan sa militar

Sand Casting Parts Gallery

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Frequently Asked Questions about Sand Casting

SERBISYO

1. What is sand casting?

Sand casting is a metal-forming process where a pattern creates a cavity in a sand-binder mixture, into which molten metal is poured.

Pagkahuman sa Pagpadayon, the sand mold is broken away to reveal the finished part.

2. Which metals can be used in sand casting?

Nearly any metal can be sand-cast, including ferrous alloys (gray and ductile iron, carbon and alloy steels) and non-ferrous alloys (aluminyo, bronse, tumbaga, tumbaga, zinc, ug magnesium).

3. How accurate is sand casting?

Typical dimensional tolerances are around ± 0.5 mm matag 100 mm of dimension, with surface finishes of Ra 6–12 µm.

4. What are the main advantages of sand casting?

  • Low tooling cost and rapid mold changes
  • Ability to produce very large or complex shapes
  • Broad material compatibility
  • Recyclable mold materials

5. What are the limitations of sand casting?

  • Relatively rough surface finish and looser tolerances
  • Higher scrap rate from gating and risers
  • Slower cycle times due to mold preparation and shakeout

6. How do I minimize casting defects in sand casting?

  • Design proper gating and risering for directional solidification
  • Use degassing and filtration to remove inclusions
  • Control mold compaction and venting to avoid gas porosity

7. When should I choose sand casting over other methods?

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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Ang imong usa ka hunong nga paghisgot alang sa puro ug pag-taho nga mga puntos sa matunaw nga metal sa ° C, °F & K-perpekto alang sa mga inhenyero, mga hobbyist, Ug bisan kinsa nga nagtrabaho uban ang mga tinunaw nga metalista.
Hibal-i ang 10 Ang mga matang sa aluminyo natapos ug mahibal-an kung giunsa ang matag paghuman nagpalambo sa pagsukol sa corrosion, Pagsul-ob sa Proteksyon, ug Visual Appeal. Gikan sa anodizing ug pulbos nga coating sa electropolishing ug pag-imprinta sa metal transfer.
Susihon ang kalibutan sa Aluminum Alloy Casting. Hibal-i ang Key Proseso sama sa paglabay sa balas, die casting, ug pagpamuhunan sa pagpamuhunan, ilang mga aplikasyon, Kinaandan nga Kontrol, ug kung giunsa pagpili ang labing kaayo nga pamaagi alang sa imong mga panginahanglanon sa paggama.