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Complete Ball Mill Wear Parts Supply | Liners/End Covers/Girth Gears/Spherical Bearings · Custom Materials · ISO9001 | Henan Sankuang Machinery
Sankuang Machinery provides comprehensive mill parts solutions, covering key wear parts and structural components for ball mills, rod mills, and AG/SAG mills.
Actual Case: An iron ore processing plant's ball mill (Φ5.5×8.5m) used standard high manganese steel liners averaging only 4 months in wet grinding conditions. Based on feed size (≤12mm) and slurry pH (alkaline), we recommended modified high manganese steel liners with optimized water toughening treatment (1050-1100℃ followed by rapid water quenching), improving initial hardness while maintaining toughness. Actual service life reached over 7 months, reducing annual liner replacements from 3 to 1.7 times.
Liner Material Selection (Based on Working Conditions):
Mill liner wear occurs mainly in two forms: high-stress wear and gouging wear. Material selection must balance wear resistance and impact toughness.
High Manganese Steel (ZGMn13 series): "Work-hardens under impact" — surface hardness increases from HB200 to HB500+ under heavy impact while core maintains high toughness. Suitable for large mills with strong impact loads.
High Chromium Cast Iron (Cr15/Cr20/Cr26): Hardness HRC58-65, wear resistance 2-3x that of high manganese steel. Suitable for fine grinding of hard materials, but lower toughness.
Bimetal Composite Material: High chromium cast iron working surface combined with high manganese steel base. Suitable for complex conditions with fluctuating impact loads.
Other Core Products:
Feed/Discharge End Covers (ZG230-450 cast steel, single weight up to 300 tons)
Girth Gear (ZG310-570, module 10-70, diameter up to 15m)
Spherical Bearings (Babbitt alloy casting + high-precision scraping, contact area ≥70%)
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