Selecting the right accumulator for your die casting machine ensures consistent performance, reduces downtime, and improves efficiency.

Intensification refers to the process of further increasing the pressure of the injection punch at the end of injection by means of an intensification mechanism, in order to achieve higher filling pressure and quality.

The booster cylinder, through the amplification effect of hydraulic pressure, raises the pressure of the molten metal to a higher level.

Ensuring that the molten metal fills the mold cavity quickly and without air bubbles, reducing defects such as pores and porosity, and improving the density and accuracy of the castings.

The intensifier achieves high-pressure injection through the hydraulic amplification principle.

Such as piston area ratio or accumulator), optimizing the filling process and enhancing the surface quality and internal structure of the castings.

The working principle and technology of the accumulator

• accumulator method
• accumulator structure
• accumulator control

Accumulator method

The accumulator methods include hydraulic system pressurization pumps, pressurization accumulators, and piston area ratio pressurization.

We use technologies such as dual-loop pressurization systems, program valve control, and single-cylinder differential pressurization to adjust pressure, flow, and time, thereby controlling the pressurization process.

Accumulator structure

Preceding vertical pressurization system, the pressurization cylinder is placed above the injection oil circuit board to achieve high-speed and high-energy filling.

Accumulator control

Haichen’s pressurization closed-loop control system and programmable logic controller (PLC) are used to precisely control the pressurization start time, pressure.

And response time, ensuring synchronization between pressurization and filling.

Steps to select accumulator in die casting

• Understand the Role of Accumulators in Die Casting
• Choose the Right Type of Accumulator
• Consider the Operating Conditions
• Evaluate Additional Features

Selecting the right accumulator for die casting is crucial for ensuring efficient and reliable production. Here are some key steps and considerations to help you make the right choice:

Understand the Role of Accumulators in Die Casting

Accumulators are used in die casting machines to provide rapid, high-pressure injection of molten metal into the mold.

They store hydraulic fluid under pressure and release it quickly when needed, ensuring consistent casting quality and reducing cycle times.

Choose the Right Type of Accumulator

There are two main types of accumulators: gas-charged accumulators and piston accumulators.

Gas-charged accumulators use a flexible bladder to separate the gas and hydraulic fluid, while piston accumulators use a movable piston.

Piston accumulators are more common in die casting due to their higher strength and reliability.

They are suitable for large volume and high flow systems and can operate in a wide temperature range.

Consider the Operating Conditions

Pressure Requirements: Ensure the accumulator can handle the maximum operating pressure required for your die casting process, typically between 200 and 300 bar.

Temperature Range: The accumulator should be able to operate within the temperature range of your production environment.

Ambient temperatures can affect the pressure inside the accumulator, so it is important to account for these variations.

Cycle Time: The accumulator must be able to recharge quickly between cycles to maintain a high production rate.

Evaluate Additional Features

Cavitation and Pressure Peaks: Some accumulators are designed to reduce cavitation and pressure peaks, which can improve the longevity of the hydraulic system.

Mounting Orientation: Ensure the accumulator can be mounted in the required orientation for your machine.

Die casting machine supplier: Haichen Machinery

• Rich Experience
• Complete Machine Series
• High-Performance Equipment & One-Stop Service

Rich Experience

Based in Ningbo, China, Haichen Machinery is a professional high-pressure die casting (HPDC) equipment manufacturer with over 20 years of R&D and production experience.

Since 2005, we have been exporting reliable die casting machines worldwide, serving global industries including automotive, new energy, LED lighting, home appliances and hardware.

Complete Machine Series

We provide two core machine series covering full production demands. The HCD cold chamber series adapts to aluminum, magnesium and brass casting for auto parts, radiators and kitchenware.

The HCD hot chamber series is designed for zinc and lead alloy casting, ideal for lock cylinders, door handles and pipe fittings.

Machine clamping force ranges from 500kN to 30000kN to meet diverse production needs.

High-Performance Equipment & One-Stop Service

Adopting advanced servo hydraulic and real-time control systems, our machines feature high precision, fast cycle speed and outstanding energy-saving performance.

With robust structure and internationally sourced core parts, the equipment boasts stable operation and long service life.

And supports seamless integration with robots and automated peripheral devices for intelligent unmanned production.

Certified with ISO9001 and CE, all products comply with national and international industry standards.

We offer one-stop turnkey solutions including customized moulds services, mold flow analysis, full-set auxiliary equipment, as well as free technical consultation.

Equipped with 15–45 days fast delivery and multilingual operation systems, we deliver reliable pre-sales, after-sales and technical training support for global clients.