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High-Manganese Steel Hammerheads Address Mining Crushing Efficiency Issues
Publish：
2025-10-04 16:44
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清水源
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Background
A large iron ore mine client previously used ordinary alloy steel hammerheads for its primary jaw crusher. Given the high hardness of iron ore (Mohs hardness 6-7) and long daily operation hours (16 hours), the hammerheads wore out every 20-25 days. Frequent replacements caused 4-5 hours of downtime per replacement, leading to monthly ore production losses of approximately 800 tons.
Challenge
The client needed hammerheads capable of withstanding high-impact crushing of hard ore, extending replacement cycles and reducing downtime to minimize production losses.
Solution
After communicating with the client’s maintenance team, high-manganese steel hammerheads were recommended. This material has excellent work-hardening properties: under continuous impact from iron ore, its surface hardness increases from HB200 to HB500+, forming a wear-resistant layer while maintaining core toughness to prevent brittle fracture.
Results
Replacement Cycle Extension: The high-manganese steel hammerheads lasted 45-50 days, doubling the service life compared to ordinary alloy steel.
Downtime Reduction: Monthly replacement times dropped from 2-3 times to 1 time, cutting downtime to 2 hours per month.
Production Increase: Monthly ore output rose by about 650 tons.
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