99% Of These Things Affect the Life of The Large Ring Gear of The Rotary Kiln

Rotary kiln manufacturers all know that the ring gear is the main transmission component of many mechanical equipment such as rotary kiln and mill equipment. Rotary kiln and mill are some large-scale working equipment, so the large ring gear of the rotary kiln is in the process of running. It is easy to wear and tear in the equipment, which is also a frequently replaced part of the equipment. In the process of operation, the lubrication conditions are slightly worse, the working environment is harsh, and the lubricating oil or some grease used are mixed with dust or sand, etc., which are one of the degrees of aggravating the wear of the tooth surface.

The service life of the large ring gear of the rotary kiln is generally between ten to fifteen years, but most of the ring gear life is only eight to ten years, and the wear degree of the pinion will be faster, generally three to five years. It needs to be replaced every year, especially some dry or semi-dry cement kilns are replaced more frequently. We are professional manufacturer of casting large ring gears. During the casting process, quenching will be performed on the surface of the gear to make the hardness of the gear meet high requirements and double its service life.

The surface quenching of the large ring gear of the rotary kiln should pay attention to:

1. It is not necessary to disassemble the ring gear for quenching, otherwise, after quenching, re-installation will cause some deformation of the gear and assembly problems.

2. In the process of quenching, it is necessary to maintain oxygen and acetylene, and the pressure of the water level does not change.

3. The speed of movement should be appropriate. If the speed is too slow, the tooth surface will be melted. If it is too fast, the hardness of the gear will be insufficient.

4. The water pressure cannot be too high when spraying water, otherwise the flame will be directly extinguished.

5. In the process of quenching, the beginning of the gear needs to be heated for a longer time, and the end needs to be moved faster, otherwise the end of the gear will be easily melted.

6. When manufacturing the nozzle, the internal holes need to be uniform and parallel, and the inner wall needs to be smooth and clean, and the welding place needs to be welded firmly.

7. The number of fire holes needs to be determined according to the size of the spray gun, and the total area of the fire holes also needs to be the same according to the area of the spray gun mouth, without the slightest error.

The service life of the ring gear is generally about one and a half years, and the service life of the pinion will be shorter, and the shortest one needs to be replaced in three months, which directly affects the work efficiency. Therefore, in the production of large ring gears of rotary kilns, there are still casting difficulties and long processing cycles, so it is necessary to improve the service life of the ring gears, as well as its own material, hardness, and wear resistance of the tooth surface, etc.

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