Medium Chrome Cast Grinding Cylpebs Key Product Features and Advantages
1. Balanced performance and compatibility, with enhanced wear resistance and toughness
Compared to low chrome cast grinding cylpebs, the increased chromium content results in a higher proportion of hard carbides, extending wear life by 30%–50% and significantly lengthening the refilling cycle; A high-temperature tempering process fully releases internal stresses, resulting in superior resistance to chipping and breakage compared to standard cast medium-chromium grinding media. Under moderate impact conditions, fragmentation and chunk loss are extremely rare, eliminating the risk of fine debris blocking the discharge slats.
2. Optimised Columnar Structure for Improved Quality and Efficiency in Fine Grinding
The length-to-diameter ratio is tailored to fine grinding conditions; the end faces and cylindrical surfaces work in concert to achieve both impact crushing and kneading for fine grinding. This results in a more concentrated particle size distribution and a lower circulation load in closed-circuit grinding systems, with hourly output increasing by 10%–15% for the same power consumption. The strong interlocking friction of the cylindrical shape prevents slippage and idle rotation within the cylinder, resulting in higher kinetic energy utilisation and superior energy-saving performance compared to steel balls of the same specification.
3. Uniform wear without deformation, ensuring long-term stability of particle size distribution
With a uniform overall hardness distribution and consistent wear rates across end faces and side walls, these media do not suffer from one-sided wear or loss of cylindrical shape during long-term operation. The particle size distribution and filling rate within the mill remain stable, significantly reducing operational downtime required for adjusting media composition and enhancing production continuity.
4. A cost-effective choice with broader operational coverage
The procurement cost is significantly lower than that of high-chromium steel segments, whilst performance far exceeds that of low-chromium steel segments. They can withstand mildly acidic or alkaline slurry environments and are suitable for both wet and dry grinding conditions. They are widely applicable in scenarios such as closed-circuit fine grinding of cement clinker, secondary fine grinding of medium-hardness non-ferrous metal ores, ultra-fine grinding of fly ash in power stations, and deep processing of non-metallic minerals such as limestone and kaolin, offering a balanced solution that combines performance and cost-effectiveness.
5. Flexible Customisation of Specifications and Stable Quality Control and Delivery
Standard dimensions range from φ7×7 mm to φ50×60 mm, with support for customising specific aspect ratios and mix proportions according to the customer’s mill parameters; chemical composition and hardness test reports are provided for each batch, alongside a variety of export packaging options including tonne bags and steel drums; delivery lead times for large-volume orders are stable and controllable.
6. Mechanical Performance Benchmarks
Surface hardness: HRC 48–56; hardness difference between the inner and outer surfaces of the rod ≤ 2 HRC
Impact toughness: aₖ ≥ 2.0 J/cm²
Microstructure: tempered pearlite + uniformly distributed alloy carbides
Heat treatment process: high-temperature tempering after casting to thoroughly eliminate casting internal stresses
Breakage rate under compliant operating conditions: ≤1.0%
