How to improve the temperature resistance of the intermediate frequency furnace lining

The high temperature performance of the furnace lining mainly depends on the physical, chemical properties and mineral composition of the refractory materials used. On the premise of the selection of raw and auxiliary materials, the sintering process is the key to obtain a good microstructure of the furnace lining to give full play to its high temperature resistance. Process. The degree of densification of the furnace lining sintering is related to the chemical composition of the refractory material, the particle size ratio, the sintering process and the sintering temperature.

Today, the professional manufacturer of intermediate frequency furnace lining materials will give us a specific explanation from several factors that affect the temperature resistance of the intermediate frequency furnace lining, how to improve the temperature resistance of the intermediate frequency furnace lining. If you are interested, follow the editor to understand. Bar.

1. Remove the mica paper when building the furnace.

2. The crystal quartz sand for furnace construction is treated as follows:

3, hand selection: firstly remove lumps and other impurities;

4. Magnetic separation: magnetic impurities must be completely removed;

5. Dry ramming material: It must be dried slowly, the drying temperature is 200 degrees Celsius - 300 degrees Celsius, and the temperature is kept for more than 4 hours.

6. Selection of binder for medium frequency electric furnace: use boric anhydride (B2O3) instead of boric acid (H3BO3) as binder, and the addition amount is 1.1%-1.5%.

7. Selection and ratio of furnace building materials:

8. Selection of furnace building materials: It should be noted that not all quartz sands with SiO2 greater than or equal to 99% can be used as lining materials for induction furnaces. The important thing is the size of the quartz grains. , (such as crystal quartz sand SiO2 with high purity, white and transparent surface.) The larger the furnace capacity, the higher the requirements for crystal grains.