Learn how to calculate the efficiency of your furnace using a simple formula.
Lining Material Properties
Typical properties of three refractory materials used commonly for making induction furnace lining. Silica (SiO2)Alumina (A12O3)Magnesia (MgO)NatureAcidicNeutralBasicMelting Point (C)172320502800Free
Electrical Measurement
The monitoring of electrical characteristics of furnace operation provides valuable information about the wear pattern of the lining. This should be checked daily when the furnace is full or nearly fu
Physical Measurement
At weekends or whenever the furnace has been cooled to low temperature, it is a good practice to measure average lining diameter as well as depth and compare with original dimensions. The diameter has
Localized Wear
Any small localized broken or worn out portion on the furnace lining can be easily patched up using air-setting refractory. The area should be thoroughly cleaned by removing slag and the refractory sh
Lining Repair
During day to day furnace operation, the lining is subjected to various kinds of thermal stresses, mechanical loading, and metal-lining reactions. As a result, some minor or major type of lining wear
Operating Practice for Long Lining Life
Temperature control: For safe furnace operation and long lining life, it is essential that the maximum temperature is not unduly exceeded beyond the safe temperature. In fact by paying more attention
Magnesia (Basic Lining)
Magnesia (Mg0) is a basic lining. It is made from either naturally occurring carbonate ore or is synthetically produced from seawater, It is graded in size from 0 to 5 mm, but somewhat coarser to sili
Alumina (Neutral Lining)
Alumina (Al203) is neutral in nature. Among the three lining materials, it has the highest negative free energy of formation. Hence it is the most stable oxide. Alumina refractories are produced form
Types of Refractories
In nature, there is no such refractory which meets all these properties. From among the available refractories, three types meet the important properties for specific applications. These refractories