①If the customer has stopped the furnace for more than 5 days, the crucible must be baked again like a new crucible.
②Because the casting material in the furnace body contains large moisture, the new furnace body must be baked for two hours, and then loaded into the crucible, and bake the cauldron and furnace body with baking the new crucible.
③Cracks appear in the crucible, pay special attention before 200 degrees, Don’t rush. The temperature is raised very slowly so that the crucible has an adaptation process. If the crucible is stored for a long time, it is necessary to extend the low-temperature baking time to completely remove water vapor.
④Before stopping the furnace, scoop out the molten aluminum. And clean the scum on the inner wall of the crucible while it is hot. Prevent the crucible from being heated up again. The dross will also corrode the crucible and affect the heat conduction. Close the furnace lid and close the vent, to maintain the residual temperature.
Resistance furnace crucible baking method
①Because there are pores in the crucible material, it will absorb moisture. Therefore, the crucible must be preheated before use to ensure that there is no moisture. Otherwise, the rapid heating will cause the crucible to burst.
②Before using the new crucible for the first time, if possible, move the crucible near the furnace to preheat for 4-24 hours.
③Before using the new crucible, if possible, put the wood in the crucible to burn for 2-4 hours, which will help the crucible to dehumidify.
How to use a flame furnace crucible
①The method of using the flame furnace crucible is very important. The improper method will cause the crucible to bloom, explode, crack on the top, and other problems.
Before using the crucible, fill up one-third of the crucible with scraps, and then preheat the pot and materials together. When preheating only the empty pot, due to the rapid fire of the pellet stove, the empty pot will heat up sharply, the crucible will overheat, and the flower will flow.
②After 1 month of use, stop the furnace for half a day, hoist the crucible out, and clean the carbon and ash outside the crucible. Use an electric wire brush, and this can increase thermal conductivity. Turn it to 90 degrees and put it into the furnace. Prevent the flame from burning in one position all the time.
③After using it for another one and a half months, lift out the crucible again, clean up the carbon, turn it 90 degrees, and put it into the furnace.
④When handing over shifts and eating, don’t add too many cold scraps. If you add too much, the upper aluminum liquid will solidify, causing the upper part to be cold and the lower part to be hot, and the top of the crucible will crack.
⑤If a slag breaker is added during smelting, the slag on the inner wall of the crucible must be cleaned up in time, otherwise it will corrode the crucible and cause the lower part of the crucible to seep liquid slag. At the same time, the accumulated dross affects the heat conduction of the crucible.
