Transverse magnetic field induction heating solution treatment of austenitic stainless steel strip

When the austenitic stainless steel strip is heated by the longitudinal magnetic field, it is a non-magnetic material, so the heating efficiency is low, and it is difficult to quickly heat to the solid solution temperature. Thin strips have higher electrical efficiency when heated by a transverse magnetic field.

Figure 9-18 shows the comparison of the electrical efficiency of austenitic stainless steel (non-magnetic material) when heated by a transverse magnetic field and a longitudinal magnetic field. In Figure 9-18, the solid line is the transverse magnetic field heating, and the dashed line is the longitudinal magnetic field heating.

It can be seen from Figure 9-18 that the electrical efficiency of the system is close to 80% when the thickness of a 1.0mm non-magnetic steel strip is heated by a 1.0kHz power supply for transverse magnetic field induction heating; while when a 450Hz power supply is used for longitudinal magnetic field induction heating, The electrical efficiency of the system is about 45%, and the difference in electrical efficiency between the two is 35%.

Figure 9-18 Comparison of electrical efficiency when the transverse magnetic field and the longitudinal magnetic field inductively heat non-magnetic materials

1~3—transverse magnetic field heating; 4,5—longitudinal magnetic field heating

It can be seen that transverse magnetic field induction heating is suitable for heating thin strips and non-magnetic materials. The test results show that the most ideal heating steel strip thickness is 0.10~2.0mm. Transverse magnetic field induction heating solution treatment of austenitic stainless steel strip is a new process with good application prospects.