What kind of coil glue is good

A good coil mastic has:

1) Good insulation function---Because the intermediate frequency furnace coil is designed with a certain space between the turns of the coil, this material is now the best filling between the turns. Coil clay sample block, its insulation resistance is very high.

2) High refractoriness --- Generally, the refractoriness of this high alumina-based coil cement can reach 1760C, so in the range of our molten cast iron 1530-1580C and molten cast steel 1650-1720C, the coil cement is enough to resist The metal liquid penetrates into the coil paste, and the induction coil is protected.

Here are some technical indicators of a classic CA340 coil cement from Saint-Gobain, which can be supplied for reference:

chemical composition percentage

Al2O3 91.7

SiO2 1.0

Others 7.3

physical function

Grain size 20F

Dry density 2.88 g\/cm3

High operating temperature 1760C

Use (use) of coil cement: Some coil cements such as CA340 can be troweled on the induction coil, and can also be poured into a certain thickness of insulation and heat insulation protection by casting the method in the internal measurement of the coil by making the mold. Layer, the latter method is usually adopted in the home of electric furnace manufacturers. Recently, we have poured a 50-ton coreless induction furnace. In addition, I have a customer who uses coil cement to repair the furnace mouth of the induction furnace. It is rumored that this kind of repaired furnace nozzle is more durable. Of course, coil cement is actually a kind of castable for our professional refractory materials, but its aggregate is fine, about some ladle and other Lining erosion and cracks, etc., can be repaired with this.