The special reducer for rolling mill is characterized by low speed, heavy load, large impact load, frequent impact times and continuous operation. In recent years, with the rapid development of steel rolling industry, the continuous development and expansion of steel varieties, the increase of output, the increase of rolling speed, and the increase of rolling load, the gear transmission device of the rolling mill is required to have enough bearing capacity, that is, high strength, high precision, high life and high reliability.
The gear units of large, medium and small rolling mills generally adopt deep machined hard tooth surface and medium hard tooth surface involute cylindrical gears, and design and manufacture technologies such as gear tooth modification, deep carburization, shot peening strengthening, etc. The reducer with welded structure is also widely used. The reducer box and cover are of welded structure, and the welded big gear structure gradually replaces the cast gear and insert gear structure in the past.
The gear reducer used for the main drive of small and medium-sized steel rolling mills is a large non standard reducer, which is used to change the high speed of the main motor into the low speed required for roll rolling and transfer torque. Its working characteristics are low speed, heavy load, large impact load, frequent impact times, and continuous work.
In recent years, with the rapid development of steel rolling industry, the variety of steel products is expanded, the output is increased, the rolling speed is increased, and the rolling load is increased. This requires that the gear reducer for steel rolling machine has enough bearing capacity to work safely and reliably for a long time without affecting the steel rolling production.
Source: Lightning Eight Diagrams
