How to check the roller wear of the Three roll mill?

1. Visual inspection:
Regularly observe the roller surface for signs of wear, such as scratches, depressions, or uneven wear.
2. Dimension measurement:
Use a caliper or other measuring tool to check the diameter of the roller and compare it with the original size to see if there is a significant reduction. If the roller diameter is smaller than the requirement, it may cause the transmission gear to be too tight and there will be a gap between the rollers. At this time, the gear needs to be corrected.
3. Temperature monitoring:
Pay attention to the temperature of the bearings at both ends of the roller, which should not usually exceed 100°C. High temperature may indicate bearing wear or roller problems.
4. Listen to the sound:
During operation, pay attention to the sound of the roller running. Abnormal noise may be a sign of wear or damage.
5. Check the pressure:
Check whether the pressure between the rollers is uniform. Uneven pressure may cause uneven wear of the rollers.
6. Regular maintenance:
After more than half a year of continuous use, a major inspection should be carried out and the worn parts should be overhauled, including disassembly, cleaning and re-lubrication.
7. Check the surface finish:
The surface hardness of the roller should reach HS70° or above, and the surface should be fine to ensure the fineness of the material grinding. If the surface finish decreases, it may need to be re-grinded or replaced.
8. Check for foreign matter:
Make sure that there is no foreign matter, such as metal blocks, entering between the two rollers, which will damage the roller surface or other mechanical parts.