Measurement of actual Heatwork
(Temperature × Time)

Improved process reproducibility

Early detection of kiln deviations

Optimization of firing curves

Consistent product quality

Easy to handle and cost-efficient!

Function of pyrometric rings: PTCR make a significant contribution to your product quality.

PTCR represents the real heating process taking place in a furnace/kiln, where the rings and the products are located. The pyrometric rings shrink, if they are exposed to heat. This change is an accurately measurable and reliable indicator of the transferred heat.

PTCR Selection based on Process-Specific Heatwork

The PTCR is a ceramic measuring tool with an outer diameter of 20 mm, specifically developed for process-related evaluation of thermal load. A total of eight ring variants are available, covering a temperature range from 560 °C to 1,750 °C. The selection of the appropriate PTCR ring is always process-specific and based on the actual thermal profile (“heatwork”) of your application. The starting point is the typical temperature range of your firing process, which determines the suitable PTCR type. It is important to note that not only the maximum process temperature is relevant, but the combined effect of process temperature, heating rate, holding time, and furnace atmosphere.

ZTH
ZTH
560°C - 660°C
ATH
ATH
600°C - 850°C
UTH
UTH
660°C - 900°C
ETH
ETH
850°C - 1100°C
LTH
LTH
970°C - 1250°C
STH
STH
1130°C - 1400°C
MTH
MTH
1340°C - 1520°C
HTH
HTH
1450°C - 1750°C

Application industries

Ceramic rings have a wide range of applications. Thanks to their simple and straightforward handling and relatively low cost, PTCR serves as the perfect tool for adjusting, securing and documenting thermal processes.

Dental Ceramics

Dental ceramics such as crowns and bridges require extremely precise firing conditions to achieve the desired translucency and mechanical strength. PTCR rings help verify effective heatwork in dental furnaces and ensure consistent firing conditions.

Ceramic Tiles

Ceramic tiles are fired in large tunnel kilns where temperature variations can affect product quality and dimensional stability. PTCR rings help monitor kiln uniformity and ensure consistent firing conditions.

Cathode Materials

Cathode materials for lithium-ion batteries require carefully controlled calcination and sintering to achieve the correct crystal structure and electrochemical performance. PTCR rings help verify the effective thermal input during processing.

Roof Tiles

Roof tiles must reach consistent densification during firing to achieve sufficient mechanical strength and weather resistance. PTCR rings help verify the real thermal input in tile kilns and support stable production conditions.

Diesel Particulate Filters

Diesel particulate filters made from cordierite or silicon carbide require carefully controlled firing to achieve the correct porosity and thermal shock resistance. PTCR rings allow manufacturers to verify the real heatwork inside large kilns and maintain consistent filter performance.

Sanitary Ceramics

Sanitary ceramics such as toilets and washbasins are fired in large tunnel kilns where uneven heat distribution can cause deformation or glaze defects. PTCR rings help monitor the effective heatwork across the kiln and ensure uniform product quality.

High Voltage Insulators

Porcelain insulators require precise sintering to achieve the dielectric strength and mechanical reliability needed for high-voltage applications. PTCR rings help confirm that the required heatwork has been achieved throughout the kiln load.

Tableware

Tableware products must maintain dimensional stability and glaze quality during firing. PTCR rings allow manufacturers to monitor kiln uniformity and ensure consistent heatwork across the entire load.

Ceramic Watch Cases

Ceramic watch cases require high density and flawless surface quality to achieve their scratch resistance and premium appearance. PTCR rings help verify the thermal profile during sintering and support consistent product quality.

SOFC Fuel Cells

Solid oxide fuel cell components undergo complex multi-stage sintering processes to achieve gas-tight layers and functional microstructures. PTCR rings help monitor the effective heatwork and ensure stable manufacturing conditions.

Aerospace Ceramics

Advanced ceramics used in aerospace applications must achieve precise densification and microstructural stability during firing. PTCR rings help verify the real heat input and support reliable production processes.

Ceramic Turbine Blades

Ceramic turbine components must withstand extreme temperatures and mechanical stress during operation. PTCR rings allow manufacturers to validate the thermal profile during high-temperature sintering processes.

Bioceramics

Bioceramic implants such as hip joint components require tightly controlled sintering to achieve the required density and biocompatibility. PTCR rings help verify that the necessary heatwork has been reached during firing.

Ballistic Protection Ceramics

Armor ceramics require precise sintering to achieve maximum hardness and fracture resistance. PTCR rings help confirm consistent heatwork and support reliable ballistic performance.

Electroceramics & MLCC

Electroceramic components such as multilayer ceramic capacitors require highly controlled sintering conditions to achieve the desired dielectric properties. PTCR rings help validate kiln performance and ensure stable production quality.

Ceramic Abrasives

Ceramic abrasives must develop a specific microstructure during firing to achieve high hardness and wear resistance. PTCR rings help monitor kiln conditions and ensure consistent abrasive performance.

Ceramic Sensors

Ceramic sensors rely on controlled sintering to develop the functional microstructure required for sensing performance. PTCR rings help confirm consistent heatwork during production.

Ferrites

Ferrite components used in electronics require tightly controlled sintering conditions to achieve the correct magnetic properties. PTCR rings help verify the effective heat input and ensure reproducible product performance.

R&D Applications

In research environments firing conditions are frequently modified and optimized during process development. PTCR rings provide a simple method to quantify heatwork and compare different firing profiles.

Piezo Ceramics

Piezoelectric ceramics require precise microstructure development during sintering to achieve the desired electromechanical properties. PTCR rings help confirm consistent firing conditions in production furnaces.

Further Information needed? Watch our PTCR explanatory video.

Play

Christian Ott

International Product Manager PTCR
Phone: +49 (0) 241-93677-56

You can read the data protection information (Art. 13, GDPR) here. Your data will be stored for the purpose of contacting you. The legal basis is Art. 6, Para. 1, lit. b, GDPR. By submitting, I confirm that the information sent via the form is complete and correct.