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What should we monitor during the melting?
– Do not raise the temperature beyond what is strictly necessary. – To control the [...]
31
Jan
Jan
What should we monitor at the start of melting?
– To verify correct melting of the metallic load realized in the sintered one. – [...]
31
Jan
Jan
What is the natural mechanism of wear away of silicon lining?
The carbon reduction of the silica is a natural reaction accentuated with temperature. SiO2 lining [...]
31
Jan
Jan
Why do the walls at the bottom of the furnaces wear away more?
When melting with the foot of bath the most frequent wear takes place in the [...]
31
Jan
Jan
Why do vertical cracks appear in the cooling?
The formation of cracks is inherent in the nature of the raw material quartzite when [...]
31
Jan
Jan
What is the silicon lining of an induction furnace for a refractorist?
It is the refractory ceramic element that separates an energized coil with water flowing inside [...]
31
Jan
Jan
Does the induction influence the wear of the lining?
Yes. The electromagnetic agitation provokes the movement of the metal inside the crucible. The speed [...]
28
Jan
Jan
Why slag may appear adhered to the lining?
The slag adhered to the silicon lining carries an inefficient running of the furnace. It [...]
24
Jan
Jan
Why do horizontal cracks appear in the lining?
There is no single answer. There are several possible reasons that we can number as [...]
24
Jan
Jan
Why does Zn appear against the mica during the demolition of the lining?
The presence of Zn in the demolition is associated with its presence in the used [...]
24
Jan
Jan
What is the difference between acid and boric oxide?
Boric acid is the hydrated form (it contains water) of boric oxide (anhydrous form or [...]
24
Jan
Jan
At what temperature should I sinter a silicon lining?
It is recommended to sinter the lining 50ºC above the working temperature. Keep this temperature [...]
24
Jan
Jan
Why does the lining appear pale pink or reddish colour?
Normally it is associated with traces of elements accompanying quartzite. What can happen? Nothing. What [...]
24
Jan
Jan
Why do small black balls appear in the lining when it is demolished?
Carbon monoxide produced of the oxidation of the carbon of the metal spreads across the [...]
24
Jan
Jan