Key Product Features and Advantages
1. Combination of soft and hard materials, offering both wear resistance and impact resistance.
The steel matrix absorbs the impact energy from ore and steel balls, preventing the lining plate from shattering or fracturing; the exposed TiC hard phase on the working surface resists ploughing and cutting wear caused by high-hardness materials such as ore and quartz. Service life under equivalent operating conditions: 1.8 3 times that of standard high-manganese steel, outperforming chromium-molybdenum alloy steel;
Its performance far exceeds that of high-chromium cast iron, significantly reducing the risk of chunks or fragments becoming lodged in the machinery.
2. Outstanding resistance to wear caused by high-silica hard ores.
For highly abrasive materials such as quartz, granite and high-silica iron ore, the TiC hard phase exhibits strong resistance to cutting wear, effectively reducing ploughing wear on the working surface and lowering wear per tonne of ore.
3. Metallurgical bonding ensures the hard phase is unlikely to detach.
The pre-set inlay casting process is employed, whereby the steel matrix encapsulates the hard elements, resulting in metallurgical fusion at the interface; qualified products are unlikely to experience failure due to the detachment of entire hard blocks during operation; this distinguishes them from ceramic liners fixed by adhesive bonding or embedded bolts.
4. Excellent resistance to plastic deformation and fatigue spalling
ZGMn13Cr2 matrix: Resistant to heavy impact, with ample toughness;
CrMo chromium-molybdenum steel matrix: High yield strength, resistant to blistering and bolt-hole tearing, with excellent resistance to alternating impact fatigue, suitable for long-term continuous operation.
5. Directional arrangement of hard phases to optimise costs.
Based on the actual wear patterns of the liners, TiC hard elements are positioned only on high-wear material-facing surfaces and the tops of lift bars, whilst the back and low-wear areas retain the steel matrix; the entire component is not made entirely of hard phases, thereby balancing performance and procurement costs.
6. High versatility across operating conditions, with support for customisation.
Various structures can be manufactured to specification, including ball mill riser liner plates, end liner plates, grate plates, semi-autogenous grinding mill liner plates, jaw plates, hammer plates and chute liners; the matrix material, hard phase specifications and arrangement density are all adjustable.
7. Reduces downtime losses and lowers overall operating costs.
With a longer service life, the frequency of liner replacement is reduced, minimising labour costs for dismantling and reassembly as well as losses due to downtime and production stoppages; spare part consumption per metric tonne of ore is reduced, making it suitable for mining projects where downtime is costly.
Proper Heat Treatment Of The Matrix
High-manganese steel substrate: Must undergo complete water-hardening treatment to ensure high austenitic toughness;
Chromium-molybdenum steel substrate: Quenching + tempering to ensure a substrate hardness of HRC 40–50.
The purchase price is higher than that of high-manganese steel and chromium-molybdenum alloy steel, and in most cases higher than that of ordinary high-chromium cast iron; suitable for applications involving highly abrasive, hard ores.
Suitable Operating Conditions
Recommended applications:
First compartment of ball mill coarse grinding, and lift bars and end liners of semi-autogenous (SAG) mills, for processing high-silica, high-hardness ores;
Jaw crushers, cone crushers and impact plates where a long service life is required whilst avoiding the risk of spalling associated with high-chromium cast iron;
Chutes and feed hoppers where there is moderate impact and severe abrasive erosion;
Mines where production line downtime results in significant losses and where the aim is to extend spare part replacement intervals.
