JFCC RMs
Common Thermal History Sensor RIFATHERMO® (REFERTHERMO®)
The firing process in the manufacture of ceramics is critical to the control of their properties.
Simply monitoring and measuring firing temperatures and heating times is not enough to manage the exact thermal history added to a sample.
Refatherm is a common thermal history sensor to easily and accurately determine the overall thermal history for process control.
We sell this excellent thermal history sensor as an agent of JFCC (Japan Fine Ceramics Center).
Principle of Refatherm
Refatherm is made of ceramic powder mainly composed of alumina, etc., molded into a specified shape.
General ceramics shrink and densify under elevated temperature conditions, eventually forming a dense body.
As a practical standard material, RIFATHERM is a thermal history sensor that utilizes the phenomenon of shrinkage and densification with good reproducibility under firing conditions and thermal history.
How to use Refatherm®.
By placing the REFERTHERM in the same location as the fired product in a heating device such as a firing furnace and measuring the fired dimensions after firing, the thermal history can be measured from a control table.
forte
The sensor itself is manufactured by strictly controlling the composition, particle size, and molding density of the raw materials, and has extremely high reproducibility in terms of thermal history and shrinkage dimensions during firing.
Firing conditions can be shared among multiple heating systems, enabling mutual sharing of technical data and comparative evaluation.
By using the system continuously on a regular basis, it can be applied to control abnormalities in firing furnaces and statistical quality control.
use
Firing control and statistical quality control of fine ceramics, electronic ceramics materials, ceramic products, etc. Electric furnace For checking the reproducibility of thermal history and temperature distribution in a firing furnace.
caution
- When used in a vacuum or in a low-oxygen atmosphere, some of the components of Refatherm itself may evaporate and contaminate the inside of the furnace. Also, the amount of shrinkage may vary depending on the atmosphere.
- The indicated temperature of the Refatherm is not the actual physical temperature (such as the temperature indicated by a temperature controller), but rather an indicator of the overall thermal history of the sensor placed at the control point.
- In addition to the applicable temperature range, the length of holding temperature may also make a difference in the selection of a sensor.
- Please refer to the user’s manual for other details.
Operating Temperature Range and Indicated Temperature Accuracy of Refatherm
| Type (Abbreviation) | Operating temperature range | Indicated Temperature Accuracy |
|---|---|---|
| H | 1400 to 1700°C | 10°C ±10°C |
| M | 1200 to 1500°C | M 1200 to 1500°C ±10°C |
| L | 1050 to 1300°C | 10°C ±10°C |
| L1 | 800 to 1150°C | 15°C ±15°C |
| L2 | 600 to 900°C | 15℃ ±15℃ L2 |
Specification Temperature Characteristics Table
☆ Thermal history sensor RIFATHERMO® is distributed by the Japan Fine Ceramics Center
It is controlled and produced as one of the JFCC’s practical reference materials
Please feel free to contact us for inquiries about RIFATHERMO®, temperature measurement and control of baking furnaces!
Our professional and knowledgeable staff will be happy to suggest products that meet your needs and usage conditions.