major challenges of batch production processes such as losses during product changeovers and inefficacies of material handling in a recipe-based approach. It supports scaling up of operations with ease.

Conclusion With huge application areas and growing demand from

the end-use

sectors, this industry is looking for new ways to improve efficiency, lead time, and capacity utilization. Industry leaders across sectors are moving towards adoption of more advanced technologies such as automation, industrial internet of things (IIoT) and simulation techniques. Inline viscosity monitoring solutions help investment casters achieve advanced process control over the slurry preparation (mixing) and coating process to build top-quality and defect-free shells with more real-time insights into their processes; and reap the benefits of Industry 4.0 and automation such as reduction in lead times, enhance capacity utilisation, reduce scraps and wastes and optimize efficiency. The sensors - SRV and SRD are being used in slurry tanks for investment casting

application across the globe.

These sensors have undergone extensive field and internal testing, and qualification procedures for operation with fluids generally used in this application. Our in-house application engineering team gives machine builders advanced knowhow to achieve seamless integration of our sensors in their system and help provision casting quality control data to their end users through on-premise, edge or cloud connectivity.

Unique benefits with the Rheonics inline online viscometer SRV for slurry mixing and coating applications include: • Operates accurately in almost all coating systems with a broad range of composition/formulations slurry

• Maintains the set in

mixing tanks regardless

viscosity of

temperature and humidity fluctuations, mixing equipment condition, substrates, solvents, formulations or dosing of colloidal silica, water and/or polymers,


Figure 4: SRV/SRD in ceramic slurry mixing tanks during mixing and coating for shell building - Schematic with possible mount location of the sensor

wetting agents, anti-foaming agents, and refractory flours

• Rugged, hermetically sealed sensor head. Sensor probe can be cleaned

inline with all standard

CIP/SIP processes, or with a wet rag manually, without the need for disassembly or re-calibration

• All wetted parts are 316L stainless steel – no corrosion problems

• Certified under ATEX and IECEx as intrinsically safe for use in hazardous environments

• Wide operational range and simple integration – Sensor electronics and communication options make it extremely easy to integrate and run in industrial PLC and control systems

For more information, contact info@ or visit

References 1. Bundy, J., Viswanathan, S. (2009) “Characterization Of Zircon-Based Slurries For Investment Casting” Inter

Metalcast 3, 27–37. https://doi. org/10.1007/BF03355439

2. Singh, B., Kumar, P., Mishra, B.K., “Evaluation Of Primary Slurry Used In Ceramic Shell Investment Casting Process” International Journal of Emerging Technology and Advanced Engineering, ISSN 2250- 2459, 2012, Volume 2, Issue 10.

3. Yamagata, H. (2005) “11 - The Turbocharger And The Exhaust Manifold” The Science and Technology of Materials in Automotive Engines, 248-260. https://doi. org/10.1533/9781845690854.248

4. Kaila, V., & Engg, S. (2014) “Optimization Of Ceramic Shell Mold Materials In Investment Casting” International Journal of Research in Engineering and Technology, 03, 30-33. https://doi. org/10.15623/IJRET.2014.0310005

5. SRV inline viscometer: https:// inline-viscometer-srv/

6. SRV operating principle: https://

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