In the industry, the various usually should be heat-treated just to be adapted towards the working conditions. After heat treatment, the various microstructure, hardness, tensile strength, yield strength will greatly improved. Therefore, heat treatment methods are a critical process during parts processing.
Heat treatment can includes hardening, tempering, annealing, normalizing etc, which is to be applied on the manufacturing process depending on different working condition requirements. Here we will discuss what equipment bring hardening and tempering process. Compared with conventional method, induction heating technology has several positive aspects for the heat treatment process of hardening and tempering.
Induction heating provides several advantages for manufacturing processes as it’s a fast, energy-saving, flameless means of heating conductive materials. Typical systems include inductive strength, inductor with copper coil and cooler or cooling unit. The current flows from the coil to generate an electromagnetic alternating magnetic field. When the conductive parts are put inside the coil, you will have electric current passing through. The electric energy is together with the resistance manifestation of the conductive part to create heat.
Then is there a benefit of induction heating for hardening and tempering of steel?
1.Flexibility
Induction home heating doesn’t need preheating some time and show-down time with the machines, you’ll be able to start or stop the machine depending on your production need.
In almost all of case, the fabric in different size and grade should be tempered at different tempering temperature. But the conventional machines is tough to achieve temperature adjustment. If the bars or tubes are heated in the high temperature for a long time, the steel will likely be decarbonizing. On the contrary, induction heat achieve different temperature adjustment, and that is controlled by power output. This is very essential for reaching different grade necessity of different grade bars or tubes.
2.Uniformity in hardness and structure
The steel microstructure may have following changes using the heat treatment process: Ferrite-Austenite- Martensite, Sorbide. But only the steel get homogeneous air conditioning, then this structure may be changed homogeneously. If it can’t transformed completely, next the hardness, toughness and tensile strength will probably be effected, thus leading that the information can not fulfill the actual application requirement. In the induction furnace, all of the heating temperature are going to be monitored and controlled, therefore, the structure is going to be transformed well and observe after stable state.