Gears are commonly used parts in machinery, and the working environment is very harsh. Therefore, production also has high requirements on the working performance of gears. In order to meet the needs of the work, it is very necessary to heat treat the gears. With the continuous improvement of production technology, we have developed an automatic production line for gear forging and preheating isothermal normalizing composed of a medium frequency induction annealing machine to perform heat treatment with good results.
The gear forging and waste heat isothermal normalizing automatic production line is as follows:
(1) Heating: medium frequency induction annealing machine, double induction coil, 1200kw, 1000Hz, push rod type, automatic temperature detection.
(2) Die forging: closed die forging, forging steps: upsetting, pre-forging, final forging, punching, blank transmission is automatically transmitted by a walking beam mechanical transmission device, forging temperature ≥900℃ (infrared temperature measurement) , slide into the rapid cooling chamber.
(3) Isothermal normalizing of forging waste heat:
1) Rapid cooling chamber: wind speed, air volume, wind temperature and wind direction are all adjustable. The rapid cooling chamber is connected to the isothermal furnace.
2) Continuous conveyor chain isothermal resistance furnace: temperature 650℃-700℃, heat preservation for 3 hours, air cooling after discharge.
This automatic production line can forge transmission gears below 2kg, with a productivity of 600 pieces/h to 720 pieces/h.
After using this production line for heat treatment, not only the quality of the gears has been greatly improved to meet the needs of the work, but the production efficiency of the workers has also been greatly improved, and 6t forgings can be produced per hour.
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GS-ZP-1200
