How to select the best induction heating equipment for your application? What frequencies are best suited to your applications?The guide below will give you some idea of induction’s potential.
How much energy do you need?
Before calculating your energy requirements you first need to know:
• The type of material (steel, copper, brass, etc.)
• Workpiece dimensions
• Desired hourly production
• Desired final temperature
Calculate your energy requirements
Step 1 First determine the material’s energy absorption rate. Fig.1 shows rates for some common materials.
Step 2 Multiply the energy absorption rate by your desired hourly production (kg/hour). The result is your specific power requirement.
Step 3 You can now ascertain the overall efficiency level of the induction equipment. Some typical induction heater efficiency levels for common materials are listed in Fig.2. Divide the calculated specific power need by the equipment efficiency rate. This gives you the total power requirement.
Selecting the right frequency
The choice of frequency is crucial when using induction heating, as frequency determines the heat’s penetration depth. Fig. 3 shows approximate frequencies for through-heating some common materials.