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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

Тартиб додани намуна

1. Тартиб додани намуна

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

It is usually made from wood, пластикӣ, ё металл.

  • Мақсад: To create the mold cavity in the sand.
  • Намудҳо: Split pattern (for complex parts), match-plate pattern, or cope-and-drag patterns.
  • Shrinkage allowance: Typically 1–3% depending on the metal.
Сохтани қолаб

2. Сохтани қолаб

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

The mold is made in two halves:

  • Cope (top half) ва 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. Сохтани аслӣ (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 найча ва runner system.

  • The system includes дарвозаҳо (to direct flow), risers (to compensate for shrinkage), ва vents (to let gases escape).
  • Metals used: оҳан рехтан, алюминий, пулод, биринҷӣ, ва гайра.
  • Care is taken to avoid turbulence, gas entrapment, and inclusions during pouring.
Хунуккунӣ ва сахтшавӣ

5. Хунуккунӣ ва сахтшавӣ

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 ларзон.
  • 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.
Тозакунӣ ва анҷомёбӣ

7. Тозакунӣ ва анҷомёбӣ

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

  • The surface may be тоза by shot blasting, tumbling, or pickling.
  • Коркарди is performed as needed to achieve final tolerances.
  • Surface treatments or coatings (масалан., рангкунӣ, сайқал додан) татбиқ карда мешавад.

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, муқовимат ба зангзании, вазн, ва арзиш.

Ferrous Metals

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

Материал Соҳаҳо Хусусиятҳои асосӣ Барномаҳои маъмулӣ
Оҳанини хокистарӣ Astm a48, EN-GJL-200/300 Қобилияти аъло, намаки вибратсия, Қувваи фишурда Блокҳои муҳаррик, пойгоҳҳои мошинҳо, манзил
Оҳани сунъӣ ASTM A536 (60-40-18), EN-GJS-400 Сахтӣ, тобоварӣ, Муқовимати хастагӣ Crankshaps, фишангҳо, арматураҳои қубур, техникаи вазнин
Пӯлоди карбон AISI 1020, AISI 1045, AISI 1060 Қувваи баланд, сарфакорона, weldable Structural parts, чоҳҳо, industrial tools
Пӯлоди хӯлаи AISI 4140, 4340, ASTM A387, EN 34CrNiMo6 Муқовимати гармӣ, Мушкилӣ, improved wear resistance Фишангҳо, мемирад, pressure parts, кайхонй
Пулоди Зангнамезадагӣ AISI 304, 316, 410, 420, Cf8, Cf8m Муқовимати аъло ба зангзанӣ, hygienic, қувваи баланд Food-grade equipment, клапанҳо, Қисмҳои насосӣ, marine use

Non-Ferrous Metals

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

Материал Соҳаҳо Хусусиятҳои асосӣ Барномаҳои маъмулӣ
Хӯлаҳои алюминий A356, A319, 6061, LM6 Вазни сабук, ба зангзанӣ тобовар, good conductivity, такрорнашаванда Автомобилӣ, қисмҳои аэрокосмосӣ, electrical enclosures
Бронза (Cu-Sn) C83600, C93200, Соус 660 Excellent wear/corrosion resistance Bushings, фишангҳо, ҷузъҳои баҳрӣ
биринҷӣ (Cu-Zn) C36000, C37700, CW614N Қобилияти коркарди хуб, attractive finish, ба зангзанӣ тобовар Plumbing fixtures, decorative hardware
Мис C11000, C12200 Outstanding electrical and thermal conductivity Electrical connectors, терминалҳо, bus bars
Zinc Alloys Zamak 3, Zamak 5, ZA-8 Нуқтаи обшавии паст, excellent detail and surface finish Complex small parts, die-cast components
Хӯлаҳои магний AZ91D, AM60 Extremely lightweight, таносуби баланди кувваю вазн Аэрокоинот, 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

Блокҳои муҳаррик, сари силиндрхо, brake drums, корпусҳои интиқол, suspension knuckles, and railway wheels.

Industrial Machinery & Equipment

Хонаҳои насос, мақомоти клапан, gearbox casings, compressor shells, and large machine bases.

Oil & Gas & Petrochemical

Pump and compressor internals, refinery equipment housings, piping tees, ангуштҳо, ва фланецхо.

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.

Истеҳсоли нерӯи барқ

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

Мошинхои хочагии кишлок

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

Art, Architecture & Decorative

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

Майдони мошинсозӣ

Майдони мошинсозӣ

Қисмҳои рехтагарии автомобилӣ

Майдони аэрокосмикй

Майдони аэрокосмикй

Қисмҳои рехтани ҳавопаймо

Майдони азхудкунии нефту газ

Кони нефту газ

Таҷҳизоти нафту газ лавозимот

Майдони ҳарбӣ

Майдони ҳарбӣ

Қисмҳои рехтани техникаи ҳарбӣ

Sand Casting Parts Gallery

ИН Технология Қисмҳо

Кастинг

Sand Casting Parts

Sand Casting Parts

304 Stainless Steel Auto Parts

Sand Casting Parts

Sand Casting Parts

316 Stainless Steel Flanges

Sand Casting Parts

Sand Casting Parts

Auto parts

Sand Casting Parts

Sand Casting Parts

Hardware parts

Sand Casting Parts

Sand Casting Parts

Auto parts

Sand Casting Parts

Sand Casting Parts

CF8M Stainless Steel Pump parts

Sand Casting Parts

Sand Casting Parts

2205 Duplex Stainless Steel Machinery parts

Sand Casting Parts

Sand Casting Parts

Machinery parts

Frequently Asked Questions about Sand Casting

ХИЗМАТРАСОН

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.

Пас аз мустаҳкам шудан, 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 (алюминий, биринҷӣ, биринҷӣ, мис, руҳ, ва магний).

3. How accurate is sand casting?

Typical dimensional tolerances are around ± 0.5 мм як 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.

Блог

Casting & Machining ШИКАМ

Донишхо

Истиноди як-истихроҷи худро барои нуқтаҳои обшавии металлии металлӣ ва парваришшуда дар ° C, °Ф & K-комил барои муҳандисон, барҳамдиҳандаҳо, ва касе бо металлҳои гудохта кор мекунад.
Кашф кунед 10 Намудҳои алюминий ба итмом мерасанд ва чӣ гуна ҳар як марра муқовимати дуздии, Ҳифзи пӯшида, ва муроҷиати визуалӣ. Аз анодизатсия ва қоидаҳои хока ба чопи электронии интиқол ва металлӣ.
Дунёи дунёи алюминийро кашф кунед. Ҷалб кардани равандҳои калидӣ ба монанди carting рег, рехтан, ва кастинг сармоягузорӣ, Барномаҳои онҳо, Назорати сифат, ва чӣ гуна интихоби усули беҳтаринро барои эҳтиёҷоти истеҳсолии худ интихоб кардан мумкин аст.