Sintering after refilling takes 1–2 hours, carried out in an inert atmosphere at 800–1000℃ to ensure sufficient recrystallization of magnesium oxide grains, forming a dense and stable insulating structure.
Key parameters of the sintering process:
|
Item |
Parameter |
|
Temperature range |
800–1000℃ |
|
Holding time |
1–2 hours |
|
Atmosphere |
Inert gases such as nitrogen to prevent oxidation |
|
Cooling method |
Natural cooling inside the furnace to avoid thermal stress cracking |
After sintering, sealing treatment and multiple performance tests are required. The entire return-to-factory refilling process typically takes 3–5 working days.
