Bullers Rings

Mantec Technical Ceramics Ltd has been making the globally renowned Bullers Rings in the UK for over 80 years.

Bullers Rings are utilised by many of the world’s leading ceramic manufacturers to measure the amount of Heat Work that has taken place in the kiln, giving an independent, accurate and reliable indication that the firing of the product is correct and unaffacted by any variations in temperature and kiln loading.

World Class Manufacturing Techniques

To ensure consistency and accuracy, Bullers Rings are manufactured to a precise materials specification under strict quality parameters.

Each batch of spray dried materials is pre-tested to our exacting standards before being released for manufacture. This consistency ensures a reliable and reproducible quality time after time.

Worldwide Applications

Bullers Rings are used in over 45 countries worldwide by the global leading producers of ceramic products.

Applications range from earthenware, sanitaryware, tableware, bricks, tiles, bone china, refractories, hard porcelain are used within the high temperature world of technical ceramics. Our customers’ applications are served by a wide range and grade of rings which enable a temperature range of 750°C - 1770°C to be monitored.

The use of just a few Bullers Rings enables craft studios and other users of small kilns to ensure the same accuracy of kiln environment as enjoyed by major ceramic producers. Bullers Rings are used in all types of kiln, continuous or intermittent, providing an independent indicator of firing consistency.

Maximising Yields and Profit

Maximum yields and profits come from consistent and reliable production.

Even with the most sophisticated of kiln control systems, there is no substitute for monitoring and controlling Heat Work with Bullers Rings. It is critical to ensure a controlled and uniform application.

Small changes in Heat Energy absorption could have a dramatic effect on the fired component performance, by monitoring Heat Work at the point of product placement you will ensure an even firing characteristic resulting in higher yields and greater profitability.

Consistent use of Bullers Rings ensures profitable firings time after time!

What is Heat Work and why should you measure it?

Heat Work is the action and effect of temperature over time on a ceramic product, often referred to as Heat Energy. Simply put, it is a defined measurement of how a product has been cooked or processed while in production.

Bullers Rings allow you to understand the effect that temperature has on the product and what action is required to prevent costly production problems occuring on future firings.

You can use Bullers Rings to increase your yields. Early notifications of under fired products allow you to re-fire to the correct quality, saving scrap products while maintaining capacity and profitability.

Only Heat Work measuring and monitoring will allow you to understand what has happened to the product in the kiln independently of time and temperature.