High-purity Graphite Crucible for Melting Precious Metal

The precision crucibles made of high-purity graphite blocks are called - high-purity graphite crucible, and its characteristics are:

1. Crucible structure is fine and the porosity is extremely low to ≤11%. The inner and outer walls of the crucible can be mirror polished, which highlights the lubricity of the graphite material and makes it difficult for the molten material to adhere to the crucible wall.

2. Carbon content reaches 99.99%, and the impurity content is extremely low, so it will not pollute the molten material.

3. Temperature resistance is more prominent, it can withstand high temperature above 2000 ℃, and it is not easy to oxidize.

The calculation of graphite crucible capacity is based on JIS#, #1 is equivalent to the capacity of smelting 1kg brass, for example, 300# graphite crucible melts about 300kg of copper, and melts about 100kg of aluminum.

Ordinary graphite crucibles made according to the standard, the ratio of outer diameter to height is about 0.7-0.8/1, and the specifications and models are #1 to #2500.

Special-shaped graphite crucibles include:

long type, which is more slender than the standard type, the ratio of outer diameter to height is about 0.6-0.7/1, and the capacity is #15 to #620

Bowl-shaped, the outer diameter is relatively large, the ratio of the diameter to the height is about 1/1, and the capacity is #50 to #1800

With a pouring spout, the crucible has a pouring groove, and the capacity is #50 to #1800

Electric furnace type, cylindrical and slender in appearance, the ratio of outer diameter to height is about 0.6/1, and the capacity is #60 to #5000

Graphite crucibles can also be customized according to the customer's size and application scenarios, and the communication of application scenarios is very important.