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Die Coatings

HA offers foundries a wide range of die coatings for gravity and low-pressure casting.

Die coatings play a crucial role in both the outward appearance and internal quality of die castings. They transfer the contour of the steel die to the casting and influence the solidification rate of the melt depending on the type of die coating used.

Functions

The die coating prevents the melt coming into direct contact with the steel die and thereby avoids welding. It also makes it easier to fill the die and avoid cold runs. The die coating’s specific insulating effect allows the feeding process to be controlled and a dense structure to be achieved without internal defects (blowholes).

 

HA offers a wide range of die coatings

From ultra-fine and low-insulation (for thicker-walled castings with the highest-quality, smooth surfaces) to rougher, high-insulation die coatings for very thin-walled castings with long flow paths, HA has them all. And thanks to their lubricating properties, our die coatings also make it easier to remove the casting from the die.

HA offers several die coatings, each with a lubricating effect and a different blend of active ingredients. These die coatings can also be used as a stand-alone system, thereby eliminating the widespread practice of applying a base coating followed by a working coating. HA offers the optimal products to meet all of our customers’ specific requirements.

As a result, foundries are able to achieve great looking castings with smooth and consistent surfaces every time.

Success story: Die coating for aluminium rims

Many leading wheel casters in Germany and around the world rely on die coatings from HA.

HA die coatings are used especially when foundries need to guarantee optimum, consistent performance and very long tool life.

Comparative studies conducted by our customers have repeatedly shown that HA die coatings offer more stable production and attractive cost benefits through reduced downtime.

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Properties

Good die coatings need to be insensitive to temperature fluctuations during the casting and solidification processes. They also need to resist abrasion caused by the melt flow or during removal from the mould.

The die coating should have a long service life and perform consistently, as well as being easy to remove whenever the tool needs to be reconfigured.

The die coating should also be easy to apply with normal spraying equipment and at different temperatures.

Development

The aim of our ongoing development work is to further extend the service life of die casting tools. At the same time, we also want to make it easier than ever before to remove castings from dies.

Our development teams are also focused on HA’s traditional aspiration of always offering the best possible product to each of our customers, which includes making our die coatings even easier and safer to use without the need for special tools or skills.

Your contact

 

Dipl.-Ing.

Dirk Peppinghaus

Product Manager Die Coatings, Metallurgical Products (NF), Release Agents HPDC

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Dipl.-Ing.

Gilbert Klußmann

Product Manager Release Agents HPDC, Die Coatings, Metallurgical Products (NF) 

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