FH® Heavy-Duty Grinding Mill Barrel | GX260CrMoNi20-2-1 Alloy Steel

FH® High-Performance Wear-Resistant Grinding Mill Barrel

This grinding mill barrel is specifically designed for high-intensity grinding applications in the mining, metallurgical, and chemical industries. The barrel is manufactured through integral casting using high-chromium nickel-molybdenum alloy cast iron GX260CrMoNi20-2-1, a material renowned for its exceptional hardness and impact resistance.

Through precision-controlled heat treatment processes, the FH® brand ensures that this material achieves a high-hardness metallurgical structure while maintaining necessary toughness, significantly extending maintenance cycles under the impact of large bulk materials.

Key Advantages
1. Excellent Wear Resistance
With a carbon content of 2.30%-2.90% and chromium content of 18%-22%, the material forms high-hardness M7C3 type carbides. Achieving a Brinell hardness of over 321 HB, it effectively resists continuous cutting and abrasion from materials against the barrel wall.

2. Balanced Strength and Toughness
Through solid solution strengthening with Nickel (Ni) and Molybdenum (Mo), this material combines high hardness with good impact toughness. It withstands cyclic stresses from grinding media (such as steel balls), preventing brittle fractures under high-load conditions.

3. High-Temperature and Corrosion Resistance
This material maintains stable hardness without phase transformation softening even under the elevated temperatures generated during grinding. Additionally, its high chromium content provides moderate corrosion resistance, making it suitable for high-sulfur or wet grinding applications.

4. Superior Cost-Effectiveness
Compared to conventional carbon steel barrels, this product offers a significantly longer service life, reducing downtime for replacements and greatly improving the annual processing capacity per equipment unit.

Application Scenarios

• Mining Industry: Wet or dry ball mills for iron ore and non-ferrous metals.
• Cement & Building Materials: Grinding of cement clinker and slag.
• Metallurgical Industry: Steel slag processing and fine alloy grinding.
• Ceramic & Chemical Industry: Superfine grinding of high-hardness materials.

Genuine Photos of FH® Wear-Resistant Grinding Mill Barrel

FAQ

Q: Is this barrel welded or integrally cast?
A: The FH® grinding mill barrel is manufactured using an integral casting process. For high-hardness materials like GX260CrMoNi20-2-1, this approach eliminates weak points associated with welds, avoiding the risk of cracks that can occur in the heat-affected zone of welded structures.

Q: Can you provide samples?
A: Yes, FH® supports small-scale trial orders or custom samples. The minimum order quantity depends on the product's size and wall thickness. Please contact our sales team for support.

Q: What is the difference between this material and standard Mn13 Hadfield steel?
A: Mn13 work-hardens under high impact but is less effective under pure high-stress abrasive wear. GX260CrMoNi20-2-1 is a high-chromium white iron with a naturally harder matrix. It offers superior wear resistance under grinding conditions compared to Hadfield steel, making it more suitable for ball mill liners and barrel applications.