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Advanced High-Manganese Jaw Plates: The Hard-Honing Heart of Your Jaw Crusher
In the punishing environment of a primary crushing stage, your equipment is only as strong as its contact point. High-manganese jaw plates for jaw crushers are the critical components that endure the relentless pressure of breaking down massive boulders. At Shandong Jiujiu Machinery Co., Ltd., we don't just cast metal; we engineer "work-hardening" shields that get tougher the harder they work, ensuring your quarry stays productive and your maintenance windows stay far apart.
The Science of "Work-Hardening" Metallurgy
The true value of a high manganese jaw plate lies in its atomic structure. Unlike standard steel that simply wears away, our manganese alloy (ranging from Mn13Cr2 to Mn22Cr2) undergoes a physical transformation under impact:
Initial Toughness: Out of the mold, the plate is relatively ductile to prevent brittle snapping under extreme shock loads.
Surface Transformation: As rocks crush against the surface, the outer layer "cold-works," increasing its hardness from an initial HB200 up to HB500+ (HRC 50–55).
Core Integrity: While the surface becomes glass-hard to resist abrasion, the inner core remains "rubbery" and tough, absorbing the massive energy of a jaw crusher without cracking.
Precision Casting for Perfect Tooth Geometry
A common issue with generic liners is "slippage"—where rock slides up rather than being crushed down. Our high-manganese jaw plates feature optimized tooth profiles (Sharp, Heavy-duty, or Flat-top) designed to grip the material instantly. By using water-glass sand casting combined with strict temperature-controlled quenching, we eliminate internal casting defects. This results in a plate that maintains its "bite" throughout its entire wear life, directly improving your final product's cubicity.
Industrial Applications: From Mining to Demolition
Our wear parts are engineered for the world's most demanding sectors:
Hard Rock Mining: Crushing iron ore, copper, and gold quartz where abrasive-resistance is non-negotiable.
Aggregate Production: Processing basalt, granite, and river pebble for high-spec construction sand.
Recycling Operations: Handling concrete debris and asphalt, where the high-manganese jaw plates must resist the impact of embedded rebar and contaminants.
Essential Maintenance FAQ
Q: Why is my jaw plate wearing faster at the bottom than the top?
A: This "bell-shaped" wear is common in jaw crushers. It usually means the "nip angle" or the discharge setting (CSS) needs adjustment. Rotating the stationary and swing plates periodically can help even out this wear.
Q: What is the benefit of adding Chromium (Cr) to the manganese mix?
A: Adding 2% Chromium significantly improves the initial hardness and corrosion resistance, making the plates much more effective when crushing wet or highly abrasive silica-based rocks.
Q: Do these plates require special storage conditions?
A: No, but we apply a rust-preventative coating to all high manganese jaw plates before shipping from our Shandong facility to ensure they arrive at your site ready for immediate installation, even after sea freight.

Chemical composition % of high manganese steel

This product is a customized product and is produced according to customer drawings or samples.

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Wear-resistant liner

High-Manganese Jaw Plates Jaw Crusher

In the punishing environment of a primary crushing stage, your equipment is only as strong as its contact point. High-manganese jaw plates for jaw crushers are the critical components that endure the relentless pressure of breaking down massive boulders.

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Jaw Plates

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Telephone:+86-13792621099

martin@shandong.com

Weifang Binhai New Area Sino-foreign Cooperation Industrial Park, about 260 meters west of the intersection of Hai 'an Road and Zhenhai Street

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Telephone：+86-13792621099

sales@sdjjiu.com

Weifang Binhai New Area Sino-foreign Cooperation Industrial Park, about 260 meters west of the intersection of Hai 'an Road and Zhenhai Street

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