Using mould release during the die casting process

Mould release is a critical step in the die casting process, ensuring that precision metal components can be ejected from the die easily and without defects.

What is mould release?

Mould release, also known as die spray or die lubricant, is a liquid applied to the steel die before each shot of molten metal. The liquid evaporates when it comes into contact with the hot steel, leaving behind a thin lubricating coating. This coating helps prevent the metal from adhering to the die, making ejection easier.

Why is mould release important?

Mould release is important for several reasons:

• It prevents the metal from adhering to the die, which can cause defects in the finished component.
• It helps the metal flow more freely into the die, resulting in a more accurate casting.
• It reduces the force required to eject the component from the die, which can extend die life.
• It can improve the cosmetic finish of the component.

Types of mould release agents

Many different types of mould release agents are available, each with its own advantages and disadvantages. The best mould release agent for a particular application depends on the type of metal being cast, the complexity of the component and the desired finish.

• Water-based mould release agents are the most common type. They are relatively inexpensive and easy to use. However, they can be less effective than other types of mould release agents at preventing porosity.
• Oil-based mould release agents are more effective at preventing porosity than water-based mould release agents. However, they are more expensive and can be more difficult to use.
• Silicone mould release agents are a good choice for components requiring a high-quality cosmetic finish. They are also effective at preventing porosity. However, they can be more expensive than other types of mould release agents.

Mould release considerations

Customers typically have two main concerns about mould release:

• Will mould release cause porosity?
• Is mould release safe for medical and surgical applications?

Porosity is a natural occurrence in the die casting process. However, the amount of porosity can be minimised by using the correct type and amount of mould release agent. Dynacast works with customers to select the mould release agent best suited to their specific application.

Mould release can be safe for medical and surgical applications if it is applied correctly and the component is properly cleaned after casting. Dynacast works with customers to ensure that their mould release is safe for their specific application.

Dynacast is an ISO 13485-certified die casting manufacturer

Dynacast is an ISO 13485-certified die casting manufacturer. This means that we have met the highest standards for quality and safety in the medical device industry. We use only the highest-quality mould release agents that are safe for medical and surgical applications.

Contact Dynacast today

If you are looking for a die casting manufacturer that can provide the highest-quality components, contact Dynacast today. We have over 50 years of experience in the die casting industry and a team of experts who can support you at every stage of the process.

We will work with you to select the right type of mould release agent for your application and ensure that it is applied correctly. We will also work with you to ensure that your component is properly cleaned after casting.