Hofmann Ceramic GmbH, a company with a seventy-year history of success, is once again showcasing its internationally renowned ceramic products for foundry technology at this years GIFA in Düsseldorf. Hofmann Ceramic products boast true "Made in Germany" quality – this is primarily because the company has kept full ownership of core development skills, production and its unique processes. For example, hard-wearing ceramic round-hole filters are manufactured in a unique, patented dry pressing procedure developed specially for foundry applications. They ensure flow rates are absolutely precise, thus delivering a homogeneous casting process with the lowest possible rejection rates and therefore high levels of productivity.
"Technical ceramics are indispensable for maximising casting quality and minimising rejection rates," explains Thorsten Reuther, Technical Manager at Hofmann Ceramic. "Our ceramic filters ensure castings are much stronger and also reduce tool wear during subsequent processing stages, thereby cutting costs."
The outstanding quality and stability of Hofmann Ceramic filters encourage laminar flow during casting and keep non-metallic inclusions to a minimum. These extraordinary, dry-pressed ceramic round-hole filters have already proven their reliability for large castings weighing up to 50 t and are available direct from stock in all popular formats and for all markets. The companys globally standardised processes, recipes and quality assurance procedures ensure its international customer base can always rely on the very highest standards in product quality.
To meet customer requirements and provide the right products to suit the relevant foundry technology, Hofmann Ceramic also supplies foam ceramic filters and extruded cell filters to quality standards that have been tried and tested many millions of times in practice. Strainer cores can also be used to help easily adjust pouring rates to the desired casting parameters.
Yet another speciality in this suppliers portfolio is the unique EXHOF-L feeder, which boasts an innovative geometry and covers all application areas in just a few dimensions. The low installation silicon-carbide chill-plates. A more limited chill effect than graphite and cast iron moulds produces lower levels of surface hardness, thereby resulting in lower processing costs and a shrinkage-free, even structure.
Comprehensive range of casting accessories
Hofmann Ceramic is a one-stop supplier of casting technology and, as a result, the companys product portfolio also encompasses ceramic parts for investment casting such as pouring cups. Alongside standard series products, Hofmann Ceramic also develops and manufactures parts like these in line with specific customer requirements – a major benefit of operating in-house development and flexible manufacturing processes.
Rounding off the product range Hofmann Ceramic is presenting at GIFA are refractory parts and ceramic-coated tools for the aluminium industry.
Hofmann Rundlochfilter.jpg: Incredibly hard-wearing ceramic round-hole filters from Hofmann Ceramic are manufactured using a unique dry pressing procedure developed specially for casting applications. This ensures precise calibration of the flow rate for highly homogeneous casting processes with minimal rejection rates and high productivity levels.