← Back to the glossary
温度・粘度
working point
Japanese: 作業点
The temperature at which glass flows well and can be shaped (log η ≈ 4). The flow range for blown and cast glass. / Note: Around 900°C for soda-lime glass.
Learn More
The working point is the temperature at which glass flows well and can be shaped, corresponding to a viscosity of log η ≈ 4. It is the flow range in which glassblowing and flow casting are performed.
In the soda-lime glass system, it is around 900°C.
This entry is written in Japanese by Rei Chikaoka and translated for readers outside Japan. If something reads oddly, the original is the source of truth.