In the industry, the various components usually should be heat-treated to become adapted towards the working conditions. After heat treatment, the various microstructure, hardness, tensile strength, yield strength will greatly improved. Therefore, heat therapy is a critical process during parts processing.
Heat treatment can includes hardening, tempering, annealing, normalizing etc, which is applied to your manufacturing process much like different working condition requirements. Here we will speak about what equipment can be used 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 since it is a fast, energy-saving, flameless way of heating conductive materials. Typical systems include inductive power, 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 positioned inside the coil, you will see electric current passing through. The ac current is combined with resistance sign of the conductive part to create heat.
Then it is possible to benefit of induction heating for hardening and tempering of steel?
Induction home heating doesn’t need preheating some time and show-down time with the machines, you may start or stop the machine depending on your production need.
In nearly all of case, the information in different size and grade have to be tempered at different tempering temperature. But the conventional machines is difficult to achieve temperature adjustment. If the bars or tubes are heated with the high temperature for years, the steel will probably be decarbonizing. On the contrary, induction warming achieve different temperature adjustment, and that is controlled by power output. This is very very important to reaching different grade need for different grade bars or tubes.
2.Uniformity in hardness and structure
The steel microstructure could have following changes with all the heat treatment process: Ferrite-Austenite- Martensite, Sorbide. But only the steel get homogeneous cooling and heating, then a structure is usually changed homogeneously. If it are unable to transformed completely, next the hardness, toughness and tensile strength will likely be effected, thus leading that the content can not satisfy the actual application requirement. In the induction warming, every one of the heating temperature will likely be monitored and controlled, therefore, the structure are going to be transformed well and gaze after stable state.
3.Very small maintenance
Compare the standard furnaces, induction heating furnace only have to maintain the induction heating coil per annum. Other parts only should be regularly checked.