តើ​អ្វី​ទៅ​ជា​មូល​ហេតុ​ដែល​ធ្វើ​ឱ្យ​ muffle ឡ heats up too slowly?

1. The heating device is aging;

2. When the silicon carbide rod is heated, there may be a group not working;

3. The adjusted current is too small;

4. With the intelligent program meter, it is possible that the set heating time is too long.