An aluminum alloy road stud die casting machine is highly recommended for producing road studs due to its efficiency, precision, and ability to create durable, high-quality products.

The aluminum alloy road studs commonly known as curb stones. They are typically produced using cold-chamber die casting. Cold-chamber die casting machines provide sufficient clamping force and injection pressure for alloys with high melting points (such as ADC12 and A380 aluminum alloys). Ensuring rapid filling and uniform solidification of molten aluminum within the mold cavity. This process yields curb stones with high dimensional accuracy, smooth surfaces, and reliable strength.

The core of selecting an aluminum alloy road stud die casting machine is to determine clamping force, injection performance, and mold mounting dimensions based on stud specifications, cavity design, and material properties. This ensures rapid and uniform filling of molten metal under high pressure. 

The recommendation of an aluminum die casting machine depends on a number of factors, including the type of aluminum alloy, the technical characteristics of the die casting machine, and the specific needs of the application.

• Determine Production Requirements
• Evaluate Key Technical Parameters
• Auxiliary Equipment and Systems
• Additional Considerations

Determine Production Requirements

The production demand for aluminium alloy road studs production, mainly includes below aspects:

• Product Specifications
• Material
• Choose the Right Type of Die Casting Machine

Product Specifications

The aluminium road studs have different types on the market. Firstly need to clarify the size, shape, material, and production volume of the road studs. On the market, there are many road stud different types. For example, for road studs with dimensions of 100×100×20 mm, a machine with sufficient clamping force and mold size is necessary.

Based on HAICHEN production experience, a 200-300 ton cold chamber machine can produce standard 100×100mm studs with a two-cavity mold. For four or more cavities, an 800-ton or larger machine is required.

Material

Ensure the machine is suitable for aluminum alloy, which requires high melting point handling and high-pressure injection.

Choose the Right Type of Die Casting Machine

Cold Chamber die casting machine : For aluminum, cold chamber die casting machines are recommended due to their suitability for high melting point materials. These machines provide higher compressive strength and product integrity.

Evaluate Key Technical Parameters

• Clamping Force
• Mold Size
• Injection Pressure and Speed
• Ejection Force

Clamping Force

Clamping force formula: Clamping force (tons) = Projected area (cm²) × Injection pressure (MPa) ÷ 100 × Safety factor. For aluminum, injection pressure is typically 40-60MPa, safety factor 1.1-1.3.

The machine should have sufficient clamping force to prevent mold separation during injection.

For example, a 300-ton horizontal cold chamber die casting machine with a clamping force of 3000 kN is suitable for small to medium-sized aluminum parts.

Projected area calculation method: Projected area is the sum of the stud body, runner system, and overflows on the parting line. How recommendable Aluminum Alloy Road Stud die casting machine selection should estimate runner area at 15%-30% of the casting area.

Safety factor determination: Aluminum has poor fluidity and creates high impact during filling, so the safety factor should be at least 1.2. Road studs have thin walls (about 2-3mm), requiring higher injection pressure for complete filling. The safety factor should be on the higher side at 1.3.

Mold Size

Ensure the mold size can accommodate the road stud dimensions. For instance, a mold size of 900×900 mm is adequate for producing two-cavity road studs.

Tie bar spacing and mold size

The mold outer dimensions must fit within the tie bar spacing, with space for installation and lifting. A two-cavity 100×100mm stud mold requires platen dimensions of 900×900mm or larger. How recommendable Aluminum Alloy Road Stud die casting machine selection must check whether the tie bar spacing can accommodate the mold frame.

Mold thickness and opening stroke

Mold thickness must fall within the machine’s min and max range. Opening stroke must allow space for casting removal and spraying. Deep cavity studs or anchor bolt designs need longer stroke.

Injection System Performance Requirements

The injection system determines whether molten aluminum can fill thin-wall cavities quickly. It directly affects internal density and surface quality of road studs.

• Injection speed requirements
• Injection pressure requirements
• Multi-stage injection control
• Intensification performance requirements

Injection speed requirements

Road studs are thin-wall parts. Molten aluminum cools quickly after entering the cavity, requiring high-speed filling to avoid cold shuts. How recommendable Aluminum Alloy Road Stud die casting machine selection should set fast injection speed at 3.5m/s or higher to complete filling in 0.03-0.05 seconds.

Injection pressure requirements

Molten aluminum has high viscosity and needs sufficient pressure to overcome flow resistance. The machine should cover 30-60MPa with adjustable settings for different molds.

Multi-stage injection control

Slow stage (0.1-0.3m/s) for venting, fast stage (3-5m/s) for filling, and intensification for feeding. HAICHEN cold chamber machines use four-stage injection control, which gives smoother transitions and better aluminum acceleration control than three-stage systems.

Intensification performance requirements

Intensification pressure should be 1.5-2 times injection pressure, with build-up time under 30ms to ensure adequate feeding in thick areas. Shrinkage tends to occur around anchor mounting holes, requiring sufficient intensification.

Key Advantages of Haichen Cold Chamber Die Casting Machines

High-Performance Structure for Demanding Processes

HAICHEN cold chamber die casting machines feature high-strength integral frames and optimized clamping systems capable of withstanding extreme internal pressures generated during the injection of high-melting-point metals like aluminum and magnesium alloys.

High precision and evenly distributed clamping force effectively prevent flash, ensuring dimensional stability and internal density for large or complex parts (e.g., automotive structural components, motor housings).

Precise and Flexible Process Control

Equipped with high-performance servo control systems, they enable multi-stage precise control over injection speed, pressure, and stroke.

This is crucial for parts with thin walls, high surface requirements, or needing local reinforcement. Fine-tuning process parameters significantly reduces scrap rates and improves material yield.

Exceptional Reliability and Durability

Critical hydraulic and electrical components from internationally renowned brands, combined with scientific circulatory cooling and filtration systems.

That ensures equipment stability under continuous high-load operation. 

Auxiliary Equipment and Systems

• Consider the Degree of Automation
• Manufacturer Reputation and Support
• Cost and Budget of alloy road stud die casting machine

Consider the Degree of Automation

Machines with higher automation levels can reduce manual intervention, increase production efficiency, and lower labor costs. This is particularly important for high-volume production.

Automatic ladling system

Aluminum melts at about 660°C, requiring an automatic ladle or pouring robot. Automatic ladling ensures consistent metal weight per cycle, reduces human error, and improves casting weight consistency.

Extraction and spraying automation

An extraction robot linked to the mold-open signal quickly grips the hot stud and transfers it to a cooling tank. An automatic spray system ensures even release agent coverage, reduces sticking, and extends mold life

Manufacturer Reputation and Support

Choose a reputable manufacturer known for high-quality machines and reliable after-sales service. For example, Haichen is a well-regarded supplier that offers comprehensive support, including installation, commissioning, and maintenance services. Haichen can make suitable solution as per our customer’s specific demand and supply aluminium road stud production line

Cost and Budget of alloy road stud die casting machine

Ensure the machine fits within your budget while meeting all necessary technical requirements. Consider both the initial investment and long-term operational costs.

Haichen Aluminum Alloy Road Stud die casting machine

Haichen is a well known manufacturer of cold chamber die casting machines, specializing in die casting production solutions for aluminum, magnesium, zinc and copper alloys.

For producing 100×100×20 mm aluminum road studs, a 300-ton horizontal cold chamber die casting machine is highly recommended. Machines like the Haichen HCD-C model offer sufficient clamping force (3000 kN), mold size (900×900 mm), and adjustable injection parameters, making them ideal for this application.

If you need to know more about Haichen’s die casting machines or customized solutions, please feel free to contact us.