Mould release is a critical step in the die casting process, ensuring that precision metal components are 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 mould 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 sticking to the mould, making ejection easier.
Why is mould release important?
Mould release is important for several reasons:
- It prevents metal from sticking to the mould, which can cause defects in the finished part.
- It helps metal flow more freely into the mould, resulting in a more accurate casting.
- It reduces the force required to eject the part from the mould, which can extend mould life.
- It can improve the cosmetic finish of the part.
Types of mould release
Many different types of mould release are available, each with its own advantages and disadvantages. The best type of mould release for a particular application depends on the metal being cast, the complexity of the part and the desired finish.
- Water-based mould releases 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 at preventing porosity.
- Oil-based mould releases are more effective at preventing porosity than water-based mould releases. However, they are more expensive and can be more difficult to use.
- Silicone mould releases are a good choice for parts 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.
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. Dynacast works with customers to select the mould release best suited to their specific application.
Mould release can be safe for medical and surgical applications if it is applied correctly and the part is properly cleaned after casting. Dynacast works with customers to ensure 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 releases 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 parts, contact Dynacast today. We have over 50 years of experience in the die casting industry and a team of experts who can help you with every step of the process.
We will work with you to select the correct type of mould release for your application and ensure it is applied correctly. We will also work with you to ensure that your part is properly cleaned after casting.
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