Material selection and characteristics of cone crusher liner (mantle and concave)
- 2025-05-08
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Material selection and characteristics of cone crusher liner (mantle and concave)
The mantle (fixed cone liner) and concave (moving cone liner) of the cone crusher are the core wear-resistant parts directly involved in material crushing. The material selection directly affects the equipment life and crushing efficiency. The following are common material types and their characteristics:
1. High manganese steel
Typical grades: Mn13, Mn18Cr2, Mn22Cr2
Characteristics:
High toughness, the surface will harden under strong impact or extrusion (work hardening effect), suitable for high impact conditions.
The disadvantage is that the initial hardness is low, and it is easy to wear quickly if the impact is insufficient.
Applicable scenarios: medium/coarse crushing of high-hardness ores (such as granite, basalt) or large pieces of materials.
Process: It needs to be treated with water toughness (solid solution treatment) to eliminate carbides and improve toughness.
2. High Chromium Cast Iron
Typical composition: Cr content 15%-30%, and alloying elements such as Mo, Ni, and Cu are added.
Features:
High hardness (HRC 58-65), better wear resistance than high manganese steel, but lower toughness.
Suitable for working conditions dominated by abrasion and wear, with poor impact resistance.
Applicable scenarios: fine crushing operations or processing of highly abrasive materials (such as quartzite, iron ore).
Process: Heat treatment (quenching + tempering) is required to optimize the balance between hardness and toughness.
3. Alloy steel (low/medium alloy wear-resistant steel)
Typical grades: ZG40CrMnMo, ZG30Cr5Mo
Features:
Hardness and wear resistance are improved by adding elements such as Cr, Mo, and Mn, while taking into account a certain toughness.
Moderate cost and relatively balanced overall performance.
Applicable scenarios: medium impact and abrasive conditions, such as crushing medium-hard materials such as limestone and sandstone.
4. Bimetal Composite
Structure: The outer layer is high-chromium cast iron (wear-resistant layer), and the inner layer is high-toughness steel (such as high manganese steel or low-carbon steel).
Features:
Combines high hardness and high toughness to extend service life.
The manufacturing process is complex (such as casting composite or welding), and the cost is high.
Applicable scenarios: complex conditions with high abrasion and impact resistance, such as processing ores with hard inclusions.
5. Other special materials
Martensitic wear-resistant steel: such as NM400 and NM500, with high hardness but low toughness, is suitable for low-impact conditions.
Ceramic/metal composites: Add ceramic particles (such as tungsten carbide) to improve wear resistance, but the cost is extremely high and is mostly used in extreme wear environments.
Material selection suggestions
Based on material characteristics:
High hardness, large block materials → high manganese steel (sufficient impact force is required to trigger hardening).
Finely crushed, highly abrasive materials → high chromium cast iron or bimetallic composite materials.
Consider the cost: alloy steel is cost-effective, composite materials have excellent performance but high cost.
Maintenance cycle: high chromium cast iron has a long life but is complicated to replace, and requires comprehensive downtime costs.
Maintenance tips
Regularly check the wear of the liner to avoid excessive wear and damage to the equipment.
High chromium cast iron needs to avoid sudden cooling and heating to prevent cracking; high manganese steel needs to ensure sufficient impact to maintain surface hardening.
Choosing the right material can significantly reduce downtime and production costs. It is recommended to communicate with our company in depth based on the specific working conditions.
