Coil mud, also known as coil mud, coil coating, coil coating, coil insulation mud, coil mud, coil red mud, is specially designed to protect the coreless induction furnace coil corundum glue, colloidal standard color: red, gray, white, the mud is completely free of corrosive, volatile components, so it will not emit toxic gases.

Product Introduction:

Coil mastic has the characteristics of high strength, high density and high insulation. It is a corundum mastic specially designed for the protection of coreless induction furnace coils. Coil mastic has a very good viscosity, and it is also very convenient to apply. The smooth surface formed on the coil can cushion the expansion and contraction of the working liner. In addition, coil mud can also effectively prevent the leakage of metal molten liquid and protect the coil from damage.

Product features:

1. It acts as insulation between coil turns.

2. You can apply a new coil or make a patch for the coil.

3. High thermal conductivity.

4. Can. To prevent the occurrence and expansion of the furnace to the maximum extent.

Packaging and storage:

High strength plastic woven composite film packaging, 25kg/ bag. Store in a cool, dry environment for 12 months. Store in a dry place to prevent moisture absorption.

Construction instructions:

Due to the short initial hardening time, it is not appropriate to mix too much material each time, pour a package of material into the container (if it is partially repaired, pour out the appropriate amount), add 10±0.5% clean tap water, and mix it well by hand or machine until it has a certain viscosity.

When the new furnace body or overhaul, the coil turn gap should be plugged and filled from the bottom up with mixed cement, and then a layer of about 6mm should be applied to the inner wall of the sensor, and then a layer of about 4mm should be applied after it solidifies. Apply a smooth layer. For the furnace body with ejecting mechanism, the bottom thickness is 15-20mm, the upper part is 8-10mm, forming a cone to facilitate the push out of the old furnace lining. When plastering, be sure to be concentric with the induction coil. In the process of using the cement (when removing the furnace lining), it is found that the broken block is damaged locally due to external factors, and it should be repaired in time.

Construction process:

1. The induction coil of the medium frequency furnace to be smeared with coil mud must be cleaned off the floating ash and paint slag pasted on it, and cleaned with a wire brush. The top ring firebrick must be filled and tightened with hard objects, and the fastening screws of the furnace cover plate must be tightened. Induction ring fixed reinforcement of medium frequency furnace (very important).

2. The mixed water shall be of drinkable quality. The ideal water temperature is between 5-25 ° C. The amount of water added should be strictly controlled in the range of 15-22 liters /100 kg material specified in the instruction manual. Can be added in 16kg / 100kg material. Excessive addition of water will cause the strength to decrease, increase the solidification time and shrinkage and crack.

3. When the coil mud is mixed, all the equipment and tools are clean and must not be mixed on the bare ground. It can be mixed by hand in the field without a mixer, and should be mixed evenly. The mixed material should be constructed within 30 minutes after mixing (at 5-25 ° C in the environment).

4. When coating the coil of the intermediate frequency furnace, a plumb line should be hung in the center of the intermediate frequency furnace to check whether the installation position of the coil is concentric with the furnace.

5, if the furnace coil coating construction, pay attention to make the coating embedded in the coil turns, coating thickness is about 6mm. The surface should be smooth and flat. When the old furnace lining is removed by a push-out mechanism, the coating should be formed into an inverted cone smooth and flat inner surface with large top and small bottom. The bottom coating thickness can be 10-12mm.

6. Minimize the gap or protrusion size between the bottom/top turn of the IF furnace coil and the corresponding bottom/upper support structure of the IF furnace (such as the pouring port). The purpose is to make the coil coating layer and the bottom/upper support structure of the electric furnace to form an overall smooth cylinder, so that the furnace lining can be expanded or cooled on its smooth surface, to prevent the furnace lining expansion and the above protruding objects or gaps between the huge stress, resulting in the lining crack.

7. After the coating layer is completed, the surface of the coating layer is brushed with a wire brush to facilitate drying.

8. The repair layer of a new coil coating or a larger area of coil coating should be subjected to at least maximum natural drying. Small areas also require a natural drying period of at least 6 hours. After natural air drying, external heat source baking, baking temperature between 200-250℃. The infrared lamp can be used as a drying tool, and the crucible mold can be put into the furnace as a heating body, and the low power is used to heat it to evenly bake the coil coating layer. (The water of the furnace will not stop cooling.)

9. Coil cement should be completed at least 2 days before building new furnace lining.