Cylindrical Grinding Cylpeb

Grinding rods (steel rods) are used as grinding media in rod mills, typically for coarse grinding but can also perform fine grinding under specific applications (e.g., soft ore fine crushing) [^5]. Made of high-carbon steel (0.85–1.00% carbon, 0.60–0.90% manganese) or alloy steels like 42CrMo, these rods are heat-treated for wear and impact resistance, ensuring they break up without twisting when worn, thus maintaining grinding capacity and avoiding tangled worn rods [^6][^8]. Rod mills use long rods (50–100 mm diameter, 3–4 inches shorter than mill length) as grinding media, creating line contact between rods, which selectively grinds coarse particles while allowing finer particles to pass through gaps between rods [^4][^7]. Rod mills are suitable for wet or dry grinding and can produce relatively uniform particle sizes, making them useful in mining (ore grinding), construction (fine aggregate production), and chemical industries [^6].

 

In summary, grinding rods are essential in rod mills for selective grinding, producing uniform particle sizes, and are ideal for coarse grinding or fine grinding of soft ores [^5][^6].