Several new processes for induction heating furnaces in medium frequency heating furnaces

Russian low-hardenable steel and controlled-hardenability steel have been widely used in automobiles, tractor rear axle gears, excavator gears, transmission cross shafts, rolling bearings for train carriages, automobile leaf springs and railway coil springs, etc., and have achieved great economic benefits. benefit. Induction resistance quenching As we all know, the teeth of the steering rack are quenched by the induction resistance method, and more than three imported machine tools are in production in China. A British machine tool used this process for gear production and found that the gears did not deform at all after quenching and could then enter the assembly process.

Longitudinal induction heating furnace quenching. Longitudinal induction heating quenching of half shafts has been used in the automobile and elongation machine industries. The longitudinal heating of the half shaft is a quenching process. In Germany and the United States, there are special machine tools for one-time quenching of half shafts. The heating, calibration and quenching are completed on one machine tool, which improves productivity. Equipment with the same output for one-time quenching and continuous quenching occupies an area of 40m2 and 115m2 respectively. Crankshaft journal fillet quenching After crankshaft journal fillet quenching, the fatigue strength is doubled compared to normalizing. Cummins and NH engine crankshafts produced in my country have adopted this process.

Low hardenability steel gear quenching. As early as the 1970s, my country conducted research on 55DT, 60DT, and 70DT steel and achieved preliminary results. Since then, due to reasons such as unstable hardenability of the steel, low-hardened steel has not continued to be used in production. In 1992, the founder of Russian low-hardened steel, Dr. K.3ЩЕПЕ ЛЯКОВСКЦЦ, came to China to give lectures and went to a certain steel plant to investigate the conditions for smelting low-hardened steel. He believed that the plant had the conditions to produce low-hardened steel. The control of alloying elements in YB 2009-1981 "Low Hardenability Titanium-Containing High-Quality Carbon Structural Steel" is different from that of Russia. The element content of (Russian) 1054-74, 58 (55П П) steel has a certain influence on Mn, Cr, Ni, The rule for the sum of the four elements Cu is <0.5% (mass fraction), while the sum of the three elements Cr, Ni, and Cu for YB2009-8155Ti steel is stipulated to be <0.5% (mass fraction). This may be the key point.

Induction heating furnace technology is the main manifestation of the level of induction heating technology and the basis for technological development. Advanced induction heating furnace technology can effectively utilize the characteristics of induction heating furnaces and achieve efficient and energy-saving local heat treatment.