The purpose of the oven is to remove the natural water and crystal water in the lining, so as not to cause the furnace body to burst, bubble or deformation or even collapse of the furnace wall due to the rapid rise of the furnace temperature when the furnace is started, which affects the strength and service life of the furnace wall. The following is shared by the furnace material manufacturer: the construction process of the oven

        1. Insert the K-type thermocouple by the crucible wall and make it. Lower end ** In the middle and lower part of the crucible die.

        2, put the iron block tightly into the crucible mold.

        3. Cover the crucible mold with asbestos cloth or furnace cover, leaving only the - exhaust hole, so that the entire furnace lining is heated evenly.

        4, must be full furnace sintering, liquid surface. The height reaches about 100mm from the furnace to facilitate the whole sintering.

The above information is provided by the charging material manufacturer

        5, sintering specification:

        a. Heat the charge to 900°C at 100°C/h and hold it there for 2h.

        b. Heat the charge to 1100"C at about 100"C/h and keep it warm for 4h.

        c.1100C After the heat preservation is complete, take out type K thermocouple.

        d. Continue to increase the power, so that the charge begins to melt, about 3 hours to make the electric furnace completely melt into the full furnace state, when the temperature reaches 1430C, the slag in time off. Low power heating to furnace temperature 1650C(soil 20C).

        e Insulated at 1650"C(S 20"C) for 2h.

        f When the hot metal temperature is greater than 1500"C, the temperature is generally monitored every 10 minutes.

        g Start charging when the initial charge melting reaches about 30%.

        h Each feed should be carried out before the last feed is completely melted, be careful not to produce the phenomenon of shed feed, continue to feed to the full furnace.

        6, the occurrence and treatment of hanging materials in the smelting process:

        a The melting process should be carefully added, pay attention to observe the furnace condition, so as to avoid the phenomenon of hanging.

        b The temperature of molten metal in the molten pool under the hanging material is too high, which can cause rapid ablation of the furnace lining and the risk of explosion at any time.

        c After the occurrence of hanging material, the power supply should be reduced to 25% of the insulation power to prevent the molten metal from overheating.

        d At this time, the furnace body must be tilted so that the molten metal is in contact with the hanging material, and it is melted away - a hole.

        e Turn the furnace body so that it returns to the upright position, and feed through the holes so that the molten metal comes into contact with the hanging material and melts it. Note: Do not overheat the melted metal when performing this step.

The above information is provided by the furnace material manufacturer for you! Hubei Anaijie stable product quality, the real use of customers to reduce costs, to provide customers with timely and stable delivery time! Welcome to telephone consultation!