- Mobile：+86 17561919576
- WhatsApp：+86 17561919576
- Email：business@cexcasting.com
Tolerance: casting blocks ±0.1mm, ±0.01mm after machining
At CEX Casting, we understand that effective mold development is crucial to casting production. To ensure consistent quality, we offer comprehensive services, covering everything from design to maintenance.
Our expert mold optimization minimizes defects and enhances production efficiency. Here are some of the key services we provide:
✔ Customized Solutions: gravity casting processes tailored to match your specific requirements.
✔ Quick Response: prompt updates and seamless coordination throughout every stage of the project.
✔ Expert Team: engineers with deep expertise in gravity casting techniques and product optimization.
✔ Direct Factory Pricing: affordable pricing is achieved by eliminating middlemen.
✔ Quality Assurance: certified under ISO9001 & IATF16949, with strict inspections for gravity casting quality.
✔ Integrated Services: from tooling design to final finishing, all gravity casting processes are well-managed.
✔ Trusted Supplier: trusted by worldwide customers for delivering high-quality gravity casting parts.
ISO 9001 and IATF 16949 certified manufacturer, guaranteeing international standards for quality and reliability in gravity casting processes.
Our advanced testing instruments guarantee precise dimensional accuracy, material reliability, and defect-free performance of the gravity casting products we deliver.
Part Name: Engine Housing
Material: A356
Industry: Automotive
Feature: High Strength-to-Weight Ratio
Part Name: Pump Impeller
Material: A357
Industry: Industrial Machinery
Feature: Excellent Fatigue Resistance
Part Name: LED Heat Sink
Material: A380
Industry: Illumination
Feature: Superior Thermal Conductivity
Part Name: Casing
Material: A413
Industry: Medical
Feature: High Corrosion Resistance and Precise Dimensional Accuracy
Part Name: Flange
Material: A535
Industry: Aerospace
Feature: Lightweight with Exceptional Strength and Rigidity
Part Name: Valve Housing
Material: A319
Industry: Marine
Feature: Excellent Corrosion Resistance
Gravity casting is a permanent mold casting process that utilizes molds typically made from heat-resistant steel. In this process, molten metal is poured into a preheated mold cavity and allowed to flow naturally under the force of gravity to fill the cavity. This method is widely used for producing medium-to-large metal parts that require high precision, excellent surface finish, and superior mechanical properties.
The natural filling process in gravity casting reduces the likelihood of gas entrapment and porosity, making it ideal for components where strength and durability are critical. Aluminum alloys, such as A356 and A357, are commonly used, but the process is also suitable for other materials like copper and magnesium alloys
Mold Preheating: the mold is heated to a specific temperature to ensure uniform metal flow and prevent thermal shock. A release agent is applied to facilitate easy part removal.
Metal Pouring: molten metal is carefully poured into the mold cavity, relying on gravity to naturally fill the mold.
Cooling and Solidification: the molten metal cools and solidifies, taking the shape of the mold cavity with precise dimensions.
Part Removal and Cleaning: once the metal has solidified, the mold is opened, and the casting is removed for surface cleaning and finishing as needed.
Feature | Permanent Mold Casting | Sand Casting |
Precision | high | moderate to low |
Surface Finish | smooth | rough |
Strength | high | medium |
Mold Reusability | reusable for multiple cycles | single-use molds |
Production Speed | faster, suitable for medium runs | slower, better for small runs |
Cost Efficiency | higher initial cost, lower per-part cost over time | lower initial cost, higher per-part cost |
Permanent mold casting is the preferred choice for producing parts with tight tolerances, smoother surfaces, and higher mechanical performance. Sand casting, on the other hand, offers flexibility for complex shapes and is more cost-effective for low-volume production.
Feature | Gravity Casting | High-Pressure Die Casting |
Mechanical Strength | superior due to low porosity | moderate |
Porosity | low | higher, due to trapped gases |
Surface Finish | smooth | very smooth |
Production Volume | medium to low | high |
Suitable Part Size | medium-to-large parts | small, lightweight parts |
Durability | excellent, ideal for structural applications | suitable for less demanding uses |
Gravity casting excels in applications requiring structural strength and high durability, such as automotive engine components and aerospace parts. High-pressure die casting is better suited for high-volume production of small, intricate parts, such as housings and consumer product components.
