3KG Graphite Crucible, High Purity Metal Melting Casting Ingot Mould for Gold
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Craft Patch
3KG Graphite Crucible, High Purity Metal Melting Casting Ingot Mould for Gold
TOAUTO 3KG Graphite Crucible, High Purity Metal Melting Casting Ingot Mould for Gold Silver Copper Brass Aluminum Jewelry Tools GROOVED GRAPHITE CRUCIBLE -- Grooved graphite crucible made of natural graphite with good thermal conductivity and high temperature resistance, and has a small thermal expansion coefficient during high temperature use. Specially designed for easy removal from the furnace say no to any metal waste. LARGE COMPACITY -- 3KG / 334ML Capacity, can be melted 6.4KG gold,3.5KG silver,3KG copper,0.9KG aluminum. The use temperature is less than or equal to 1800 ℃, can melt alloys such as gold, silver, platinum, and other precious metals, smelting, casting metals. Long Service Life -- The surface of the graphite crucible has a special glaze layer and dense molding material, which greatly improves the corrosion resistance of the product and extends its service life WARM TIPS -- Pure graphite crucible can NOT be heating by carbon furnace or charcoal kiln. It will be oxidized and cracked; Pure graphite will start to oxidize at 752 °F （400℃). They withstand temperatures can be 3200 °F if you use Air Electric Furnace. They withstand temperatures can be 5000 °F if you use Vacuum or Gas Protection Furnace."
