High-frequency induction heating machine performs induction quenching heat treatment on gears

As a commonly used part in machinery, gears need to withstand huge friction during work. Therefore, many manufacturers use high-frequency induction heating machines to quench and heat treat them to improve their wear resistance and hardness. Although there are many quenching methods for gears, after our countless tests, induction quenching is a more convenient and energy-saving quenching method. Today, Zhengzhou Gou's technicians will tell you about the gear induction quenching process that they have summarized over the years.

Gears suitable for gear surface quenching include medium carbon structural steel and medium carbon composite structural steel gears. Gears made of low carbon structural steel and low carbon alloy structural steel that have been carburized or carbonitrided. The depth of the hardened layer of this type of gear can be selected according to (0.2~0.4) m (modulus); the surface layer structure is fine needle-like martensite. After quenching, it is tempered at low temperature to adjust the tooth surface hardness to the technical requirements of the product.

For surface quenching of gears, high-frequency induction heating quenching can be used. Depending on the gear module and gear size, generally high-frequency induction heating machines can perform full-gear penetration quenching on gears with module module 4 or below. Gears with module module 5 or above can also be quenched on a single tooth due to the height and width of the tooth profile (can be along the Tooth quenching or inter-tooth quenching); liquid spray (mainly water) cooling or immersion cooling can be used. The gear rotates during full-tooth quenching, and does not rotate during single-tooth quenching. After each tooth is quenched, one tooth is rotated until all teeth are quenched. Surface quenching of gears is generally performed after rough machining or semi-finishing.。

In actual production, due to the diversity of gear structures, there are various inductors for induction heating and quenching, including inductors with water spray rings and independent water spray rings. Taking the quenching and treatment of a gear with a tip circle diameter of 1790mm, a tooth number of 104, a module of m=16, and a material of 50Mn2 as an example, the tooth surface heat treatment hardness is required to be 55 to 60HRC. The gear is normalized, machined, and inter-tooth quenched one by one. The heating equipment is a high-frequency induction heating machine. In order to obtain sufficient depth of the hardened layer, the method of preheating-heating-water spray cooling is adopted.

As a relatively energy-saving and environmentally friendly quenching method, induction quenching has been recognized by countless manufacturers. If you don't have such equipment yet, if you are still using traditional heating equipment, then come to Zhengzhou Gou's induction heating equipment manufacturer to buy equipment that is more suitable for you.