When austenitic stainless steel strip is heated with a longitudinal magnetic field using medium frequency induction heating equipment, since it is a non-magnetic material, the heating efficiency is low and it is difficult to quickly heat to the solid solution temperature. Thin strips have high electrical efficiency when heated by transverse magnetic fields.
The figure above shows the comparison of electrical efficiency of austenitic stainless steel (non-magnetic material) when heated by a transverse magnetic field and a longitudinal magnetic field. The solid line in the figure is the transverse magnetic field heating, and the dotted line is the longitudinal magnetic field heating.
It can be seen from the figure that when a non-magnetic steel strip with a thickness of 1.0mm is heated by a transverse magnetic field using a 1.0kHz power supply, the electrical efficiency of the system is close to 80%. When using a 450Hz power supply for longitudinal magnetic field heating, the electrical efficiency of the system is about 45%, and the electrical efficiency difference between the two is 35%.
It can be seen that transverse magnetic field heating is suitable for heating thin strips and non-magnetic materials. The test results show that the ideal thickness of the heating strip is 0.10-2.0mm. Austenitic stainless steel strip adopts medium frequency induction heating equipment to conduct transverse magnetic field heating solution treatment, which is a new process with good application prospects.
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GS-ZP-1200
