FAQ ABOUT CDOCAST GOLD FURNACE

FARQ About CDOCAST Gold Furnace

 1:What heating principle is used in this induction gold furnace.

Our induction gold furnace adopts intermediate frequency electromagnetic induction heating working princpiples . Usually we will adopt the pure graphite crucibles with super magnetic permeability.Graphite crucibles can be heated to 1600 degrees within a shortof time, so they can melt various metals, and Due to the super strong electromagnetic stirring ability, the metal can be made more uniform when melting the alloy.

 2: Will there be loss of gold during melting process and how to avoid it?

During the high-temperature melting process, a certain degree of gold loss will inevitably occur but this is minimal ,most of the time you can ingore it, but If you operate the melting process incorrectly, such as reach rapid heating temperature in a short time , the loss will be much greater. Therefore, we recommend installing a temperature control system which can make the temperature increase slowly and evenly, which can minimize the loss of gold There are two main types of temperature control. The first one is thermocouple, which is more common and has high cost performance. The second one is infrared temperature measurement, which is more expensive and it is usually used for temperature measurement of high-temperature metal melting. Customers can choose according to their actual needs.

3:Could I get 9999 Gold from Your gold induction furnace?

Our gold induction furnace is only applied to smelt gold, but it can’t be used for purification. Of course, You can add some borax to remove the nonmetallic impurities. But if you have different metals in your raw materials,and want to seperate them you need the refinery machine.

4: How long is the life of graphite crucible in your gold induction furnace? Do we need to prepare more graphite crucibles?

As we know,Graphite is easy to volatilize and oxidize at high temperature, so the service life of graphite crucible is limited. Of course, you need to prepare several more sets for spare usage, Usually, we will advise customers to prepare at least 5 sets of spare graphite crucibles when first time purchase. As for the lifetime of the graphite crucible,First of all, our company adopt the highest grade graphite powder, so the quality of graphite crucible is much better than that of other companies. However, the service life of graphite crucible is closely related to the method of how to use it . For example, if you add chemicals during melting process, the service life of graphite crucible will be reduced. Therefore, normally speaking,CDOCAST graphite crucible has a long life of about 30 pots.

5:Does this gold induction furnace Need Water Chiller?

During the melting process.The temperature of induction gold furnace can reach1600 , so the cooling water is very important for induction furnace, that is to say,the whole smelting process needs water to circle to cool the machine, so it will not burn out the machine. Our induction gold furnace has a water pump inside of the machine already. Therefore, if you use the induction gold furnace to melt only some pots each day,you can just prepare a water tank and connect the water to our machine which is enough, If you need to work continuously for a long time, per day I suggest purchasing an additional water chiller to work with the furnace to gurantee the  induction gold furnace will not be damaged during melting

6:How to Remove Impurities from Gold?

During smelting, you add flux to the melting workflow to remove some impurities and make the gold more pure. The flux is combined with impurities in minerals to form slag and separate from metal, so as to achieve the purpose of smelting or refining.

7:Can this induction gold  furnace be made into single phase 220 v? can you make

furnace with three phase 220v AND three phase 440V?

Cdocast 4kg&6kg induction gold furnace can be made into single phase 220V,and three-phase 380V , As for the the furnace with larger capacity, such as 8kg gold furnace and , 10kg gold furnace we can customize it into single 220V also , but it requires a larger wires and breakers ,which is obviously not recommended.If you need furnace customized into three phase of 220 V voltage and three phase of 440V special voltage, we have the ability to customize the furnace also.

8:Can I use this gold induction furnace to melt silver or platinum?

The graphite crucible can also be used for melting silver and copper, but for the melting of platinum and palladium, due to the high melting temperature, we will adopt a quartz crucible, the frequency and the coil design will be different , so we recommend using different furnaces or using a double crucible induction furnace, which comes with one graphite crucible and one quartz crucible.

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