Coatings for all applications
The term coating refers to the techniques used to smooth the surface of manufactured parts. In foundry technology, coatings are substances that are applied to moulds and cores to smooth the porous surface of the moulded part. As a base material, finely ground refractory to highly refractory materials are used. The coating layer insulates the substrate and protects against thermal stress from the molten metal.
- Immaculate casting surfaces
- More efficient processes
- Prevention of defects
- Controllable properties
As one of the most important supplier of foundry chemical products in India, Gargi Hüttenes-Albertus offers coatings for all applications in automotive and hand mould casting and many other special casting processes (Lost Foam, Centrifugal, V-Process etc.)
As a result of the constant advances in binder system technology, coatings are also constantly adapted to ever-changing requirements. This is made possible by the use of new raw materials, which are tested and adapted during continuous research and development work.
We can also meet the continuously increasing demand for coatings with a broad product range.
- Zircon Coatings
- Graphite Coatings
- Magnesite Coatings
- Alumino Silicate
- Mixed Refractory Coatings
- Granular Coatings
- Special Application Coatings
Strengths of Gargi HA coatings
Excellent casting surfaces can only be achieved with the right coating. Typical casting defects such as veining can be avoided; reworking and the associated costs are significantly reduced.
Gargi HA’s comprehensive product portfolio includes coatings for all applications.
- Surface optimization with the latest technology
- Uniform coating layers
- Stable workability
- Controlled rheological properties
- Improved temperature stability of the moulding material
- Avoidance of casting defects such as penetration or veining
- Controlled gas permeability
- Minimal reworking
- Alcohol and water based coatings for all requirements
- Optimized application through cooperation with manufacturers of application and processing equipment
Water as a solvent
Continuous further development
What were once simple coatings have now become complex multi-component systems for a wide range of applications. By making fine adjustments to the composition of the refractory materials, carrier liquid, binders and other input materials, our coatings can be adapted to all specific conditions.
In addition to delivering the best technology at the best prices, we also strive to maximise the sustainability of our products – both in production and in use in the foundries.
The changeover from alcohol-based to water-based coatings has persuaded many customers to opt for this emission-free, cost-effective and storage-stable solution – with excellent casting results. The same goes for conventional coatings, where our research focuses on reducing emissions and conserving resources.
At our laboratory in Mumbai (India), a dedicated team of experts is committed to the new and further development of coating systems.
Specialised coatings
Our product range includes over seventy coatings, tailored to the needs of our customers:
- Coating for Centrifugal Liners
- Launder/Runner Coating
- Lost Foam Coating
- Full Mold Coating
- V Process Coating
- Coating for Green Sand Molds
- Chill Coating
- Non Zircon Coating for Steel castings
- Penetrative Coating
Compact Coating Unit
Together with our partner Neuhof we developed a pragmatic solution for coating preparation.
Cost-efficient solution for stable coating processes.
Technical Articles
Coatings for the 3D printing progress
Since printed cores differ significantly in some important properties from blown cores, there are specific requirements placed on the coatings. HA’s Center of Competence, in the course of the development of special coatings for 3D printing, has thoroughly examined the role of coatings in printed cores and how to comply with the special requirements of the 3D printing process.
HA has developed a special series of coatings for the 3D printing process, which are already successfully being used for actual cast parts. They provide a smooth surface free of casting defects in aluminium, iron and steel castings.
Coatings for Centrifugal Casting
Innovative coatings formulated for centrifugal casting help to avoid casting defects, influence mechanical parameters and even serve as a forming medium to allow the creation of special surface structures. For foundries, it is well worth consulting an experienced coating supplier at an early stage in the development process of any new centrifugal casting applications.
The foundry specialists and chemists at Gargi HA are always happy to take on new challenges. Since there is often no “off-the-shelf” product for special applications, we develop and test solutions step by step together with our customers – from initial testing all the way through to series production readiness.
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