Rotary Kiln tyre
Choose a right rotary kiln tyre from AS Metal will let your rotary kiln have longer service life.
Rotary Kiln tyre also called rolling ring or riding ring, is a key part of rotary kiln.
Rotary kiln tyre usually consists of a single annular steel casting. The function of rotary kiln tyre is to transmits all gravity of rotary barrel (including refractory linings, internal devices, and raw material, etc.) to supporting roller, and ensures that barrel rotates smoothly on supporting roller, as well as strengthen radial stiffness of barrel, therefore the rotary kiln tyre must fit the shell snugly, but also allow thermal movement.
1. Rotary Kiln tyre is in simple structure and easy to maintain.
2. High strength and excellent durability. We usually manufacture the rotary tyre in cast alloy steel, so that the rotary kiln tyre will have good strength and toughness, and also support rotary kiln well.
3. Our rotary kiln tyre has quenched, so that it has high stiffness
enough strength, durability, and rigidity of rotary tyre are necessary.
In the standard design, the tyre was mounted loosely on the kiln shell. Inevitably, the tyre is cooler than the kiln shell, and so a small gap allows differential expansion to take place. The gap is usually designed to be about 0.2% of shell diameter at normal operating temperature. The kiln tube bears down upon the inside of the tyre through smooth-surfaced chairs which also have lugs bracketing the tyre, preventing it from slipping along the kiln axially. The spacing of the chairs also reduces the amount of heat conduction from the kiln shell to the tyre. The tyre needs to remain relatively cool because so large a casting would be unlikely to survive a large radial temperature differential during heating up of the kiln. Another effect of the gap is that tyres would gradually precess around the kiln, with one complete turn in every 500 turns of the kiln. Measuring the rate of precession was a rough-and-ready way of assessing the width of the expansion gap while the kiln was in operation. Small changes due to wear could be adjusted by adding shims.