Characteristics of high frequency induction heating welding
Release time:
2022-11-22
【Summary Description】 Fast heating speed and high production efficiency. The unit power of high-frequency induction heating is as high as 500-1 000/kw², so the heating speed is extremely fast, and the time required for large-area welding is only a few seconds, which can greatly shorten the welding time, improve productivity and reduce production costs. (2) The heat affected zone is small, and the damage to the substrate is small. The skin effect of high-frequency induction heating makes the heating depth of the welded workpiece very shallow, even reaching a few tenths of a millimeter. Relying solely on heat transfer from the workpiece to the core, any point of the workpiece is heated to melt upon entering the sensor. Temperature, it enters a rapid cooling state after leaving the sensor, there is almost no heat preservation time, and the heating time is extremely short, so the heat affected zone is very small, and the substrate is basically not damaged. In addition, there is little scale formation, and even if heated in air, there is little oxidation and decarburization on the billet surface. To avoid or reduce the formation of brittle compounds at the interface, the mechanical properties of welded joints are excellent. Due to the fast induction heating speed, energy concentration, short cooling time, the resulting austenite grains are small, and the workpiece after induction heating has a very good metallographic organization. For dissimilar metal welding, a very short heating time can reduce the formation of brittle compounds at the interface and effectively improve the mechanical properties of the welded joint. (4) to achieve the welding of complex interface. The sensor heating head can be designed into the corresponding shape according to the heating needs of different workpieces, and the extremely short heating time can realize local heating, the temperature of the heating zone is quickly established, and the temperature transition zone is narrow, so that the sensor can move along the complex interface, so as to realize the welding of the complex interface. In addition, high-frequency induction heating welding also has the advantages of energy saving, repeatability, and easy automatic production. The disadvantage is that the heating temperature is not easy to control accurately, and the electromagnetic field generated is more harmful to the human body.
Fast heating speed and high production efficiency.
The unit power of high-frequency induction heating is as high as 500-1 000/kw², so the heating speed is extremely fast, and the time required for large-area welding is only a few seconds, which can greatly shorten the welding time, improve productivity and reduce production costs. (2) The heat affected zone is small, and the damage to the substrate is small.
The skin effect of high-frequency induction heating makes the heating depth of the welded workpiece very shallow, even reaching a few tenths of a millimeter. Relying solely on heat transfer from the workpiece to the core, any point of the workpiece is heated to melt upon entering the sensor. Temperature, it enters a rapid cooling state after leaving the sensor, there is almost no heat preservation time, and the heating time is extremely short, so the heat affected zone is very small, and the substrate is basically not damaged. In addition, there is little scale formation, and even if heated in air, there is little oxidation and decarburization on the billet surface.
To avoid or reduce the formation of brittle compounds at the interface, the mechanical properties of welded joints are excellent. Due to the fast induction heating speed, energy concentration, short cooling time, the resulting austenite grains are small, and the workpiece after induction heating has a very good metallographic organization. For dissimilar metal welding, a very short heating time can reduce the formation of brittle compounds at the interface and effectively improve the mechanical properties of the welded joint. (4) to achieve the welding of complex interface.
The sensor heating head can be designed into the corresponding shape according to the heating needs of different workpieces, and the extremely short heating time can realize local heating, the temperature of the heating zone is quickly established, and the temperature transition zone is narrow, so that the sensor can move along the complex interface, so as to realize the welding of the complex interface.
In addition, high-frequency induction heating welding also has the advantages of energy saving, repeatability, and easy automatic production. The disadvantage is that the heating temperature is not easy to control accurately, and the electromagnetic field generated is more harmful to the human body.
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