Wide application of induction heating
Induction heating technology is widely used in the automotive, tractor, and engine industries. There are more than 200 types in automobile manufacturing. Nearly 50% of the weights are induction hardened, such as crankshaft, half shaft, camshaft, brake cam, steering knuckle, shifting guide slot, valve adjusting bolt, intake and exhaust valve end. Head, ball head, etc. Among them, Dongfeng Motor Corporation's semi-axial transverse magnetic field heating and quenching is the most representative advanced technology. The rectangular inductor with transverse magnetic field realizes one-time heating and quenching of the semi-axis surface and the rounded corner, which improves the production efficiency by several times and the bending-torsion fatigue strength of the half-axis by 10 times. The semi-axis induction hardening automatic production line with fault alarm, diagnosis function and automatic control by computer has been put into production for many years. The induction heat treatment of China's automobile industry has reached the international advanced level.
China's inductive power supply manufacturers since the introduction of SIT (static induction transistor), 1GBT (insulated gate bipolar transistor) and MOSFET (metal oxide semiconductor field effect transistor) all solid-state transistor power supply since the 1990s, the old-fashioned tube high-frequency power supply and machine The intermediate frequency generator set has been gradually replaced by the transistor power supply. The new power supply produced by the local enterprise can basically meet the power and frequency requirements of the user enterprise. The induction hardening machine develops the induction quenching device with identification parts, control power, automatic adjustment of process parameters, fault display, alarm and diagnosis in the direction of flexibility, automation and intelligence. It is also gradually applied in the production of automobile industry.
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