What is the difference between quartz crucible and graphite crucible? 

Graphite crucible is a kind of inorganic nonmetallic material with excellent performance, which has the characteristics of good lubricity, thermal conductivity and high temperature resistance. What is the difference between graphite crucible and quartz crucible? The contents are as follows:

1. Color

The graphite crucible is black cupped, and the quartz crucible is white cupped.

Second, heating method

1, there is resistance in graphite

(1) When the high-frequency current passes through, the graphite crucible heats the metal material through its own induction heating.

(2) Smelting range: copper, gold, K gold, silver, alloy, etc.

2. There is no resistance in quartz

(1) When the medium frequency current passes through, the metal material in the quartz crucible generates induction heating.

(2) Quartz crucible does not heat, it is suitable for melting: gold, palladium, stainless steel, gold, iron, aluminum and so on.

Three, melting

1, graphite crucible

A small number of alloys can be melted, and when we need to change the type of alloy, we only need to exchange the graphite crucible.

2, quartz crucible

The melting temperature exceeds 1800 degrees Celsius, and sodium thiosulfate (dried at 212 degrees Celsius) and potassium bisulfate (sodium) can be used as a flux.

Quartz crucible can withstand higher temperatures than graphite crucible.