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time: 2025-05-09 01:48:18
The application of induction heat treatment in heat penetration is mainly reflected in the use of electromagnetic induction principle to quickly and uniformly heat the metal material as a whole, so as to meet the needs of material heat penetration in processes such as forging, rolling, and heat treatment.
1. Heat penetration before forging
In the forging process, induction heat penetration is used to quickly heat the metal billet (such as steel, aluminum alloy, titanium alloy, etc.) to the forging temperature (usually 1100~1250℃) to ensure that the material is softened uniformly as a whole, which is convenient for subsequent plastic forming.
Advantages: Compared with traditional gas furnaces or resistance furnaces, induction heating is faster (minutes), has less oxidation loss, and lower energy consumption.
2. Billet heating before rolling
It is used for efficient heat penetration before rolling of bars, plates or pipes to ensure uniform temperature inside the material and avoid cracks or deformation caused by temperature gradients during rolling.
3. Homogenization heat treatment of metals
Perform heat annealing on castings or powder metallurgy parts to eliminate internal residual stress or component segregation and improve the uniformity of the material microstructure.
4. Powder metallurgy sintering
In powder metallurgy, induction heat can achieve rapid heating to the sintering temperature (such as 1200~1300℃ for iron-based materials), promote diffusion and bonding between powder particles, and reduce oxidation.
5. Composite material processing
Used for overall heating of fiber-reinforced metal-based composites to ensure that the thermal expansion of the matrix and the reinforcement phase matches and avoid interface damage.
1. Fast and efficient
The power density of induction heating is high (up to 1000 kW/m² or more), and the heat penetration speed is 5~10 times faster than that of traditional furnace heating, which significantly improves production efficiency.
2. Accurate temperature control
By adjusting the current frequency, power and heating time, temperature control within ±10℃ can be achieved to avoid overburning or insufficient heating of materials.
3. Good uniformity
Reasonable design of induction coil and frequency parameters can ensure that the temperature difference between the core and the surface of the material is ≤30℃ (for example, a steel bar with a diameter of 100mm), meeting the requirements of high-precision process.
4. Energy saving and environmental protection
The thermal efficiency is as high as 60%~80% (traditional furnaces are only 30%~40%), and there is no combustion exhaust gas emission, which is in line with the trend of green manufacturing.
5. Automation integration
It can be linked with manipulators, conveyor belts and other equipment to realize the integration of fully automatic production lines, which is suitable for large-scale continuous production.
The application of induction heat treatment in heat penetration has significantly improved the efficiency and quality of metal processing through fast, uniform and controllable heating characteristics, especially in the field of high-end manufacturing (such as aerospace, new energy vehicles). In the future, with the development of high-frequency power supply technology and intelligent temperature control algorithms, its application scope will be further expanded, becoming one of the mainstream technologies to replace traditional heating methods.
