Quenching & Tempering: Boost Durability of Crusher Wear Parts
Publish：
2025-12-15 09:36
发布人：
清水源
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Crusher wear-resistance parts—from jaw plates and blow bars to liners and crusher impact plates—endure constant friction and impact from abrasive materials like granite, limestone, and ore every day. Their service life isn’t just a minor detail; it directly dictates crushing efficiency and operational costs for mining, quarrying, and aggregate operations. Among all heat treatment technologies, the quenching + tempering combined process stands out as the "gold standard" for enhancing the hardness, toughness, and wear resistance of these critical components—especially for high-demand parts like manganese crusher plates and crusher impact plates. This blog explains how this process works and why it’s non-negotiable for optimizing crusher performance.
Why Quenching + Tempering Is Non-Negotiable for Crusher Wear Parts
Crusher wear parts are typically made of high-carbon steel (e.g., Mn13, Cr12MoV) or alloy steel. Raw steel alone lacks the comprehensive performance needed: high hardness often means poor toughness (prone to cracking), while good toughness may lead to rapid wear. The quenching + tempering process solves this contradiction by modifying the metal’s internal microstructure.
Key Benefit: It perfectly balances surface hardness (to resist abrasive wear, a top enemy of crusher impact plates and liners) and core toughness (to prevent fracture when handling heavy or hard materials—critical for manganese crusher plates). This balance is exactly what every crusher wear-resistance part needs to perform reliably long-term. |
Quenching + Tempering Process: Step-by-Step & Parameter Control
The process combines rapid cooling (quenching) to form martensite and controlled reheating (tempering) to relieve internal stress. Below is a detailed breakdown of parameters for common crusher wear part materials:
Material Type | Quenching Temperature (°C) | Quenching Medium | Tempering Temperature (°C) | Final Hardness (HRC) | Suitable Wear Parts |
Mn13 Steel | 1050-1100 | Water | 200-250 | 45-50 | Jaw Plates, Impact Plates |
Cr12MoV Steel | 950-1000 | Oil | 500-550 | 58-62 | Blow Bars, Cone Liners |
NM450 Wear-Resistant Steel | 900-950 | Water-Oil Mixture | 300-350 | 43-47 | Vibrating Screen Plates |
Common Mistakes to Avoid in the Process
- Over-quenching: Excessively high temperature or long holding time leads to grain coarsening, reducing toughness.
- Inadequate tempering: Insufficient time at tempering temperature leaves residual stress, causing parts to crack during use.
- Uneven cooling: Uneven quenching medium flow results in inconsistent hardness across the part surface.
Final Thoughts
For crusher wear parts, the quenching + tempering process is not just a treatment—it’s an investment in reducing downtime and maintenance costs. By optimizing process parameters based on material type and part function, you can maximize the service life of jaw plates, blow bars, and other critical components.
Need a customized heat treatment solution for your crusher wear parts? Contact our experts today!
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