Project Background

With the global mining industry moving toward higher efficiency and continuous production, mining equipment requires wear parts with longer service life, stronger impact resistance, and more stable performance during long-term operation.

In recent years, customers from mining markets including South Africa, Russia, and Chile have continuously engaged with Haitian Heavy Industry for technical discussions, focusing on performance optimization solutions for key mining crusher components, including:

· Jaw Crusher Plates

· Cone Crusher Liners

· High Manganese Steel Wear Parts

Through communication with customers from different regions, Haitian has identified several common challenges faced by global mining operators:

· Insufficient service life of wear parts;

· Cracking or spalling under high-impact working conditions;

· Performance differences between different production batches;

· Frequent equipment shutdowns caused by wear part replacement.

Based on these practical application challenges, Haitian Heavy Industry provides comprehensive wear solutions through optimization of material systems, molten steel purity control, casting processes, and heat treatment technologies.

Customer Challenges Analysis

1. Increased Risk of Cracking Under High-Impact Working Conditions

A South African mining customer reported that during actual crushing operations, the equipment continuously processes high-hardness ores, requiring wear parts to withstand repeated impact loads and compression forces.

Some conventional wear parts experienced:

· Localized cracks;

· Edge spalling;

· Abnormal fractures;

which affected continuous production efficiency.

After technical analysis, Haitian engineers determined that wear part failure is not only related to material hardness but also closely associated with internal structure quality, molten steel purity, and heat treatment stability.

If casting components contain internal defects such as oxide inclusions, porosity, or uneven microstructure, these areas can become crack initiation points under continuous impact loads, reducing product reliability.

2. Unstable Wear Performance and Service Life Differences

During technical discussions, Russian and other overseas customers indicated that even wear parts produced with the same material grades could show significant differences in actual service performance.

Haitian engineering team analyzed that the performance of high manganese steel wear parts does not depend solely on alloy elements such as Mn, Cr, and Mo.

The final material performance is determined by:

· Molten steel purity;

· Alloy composition control;

· Casting density;

· Heat treatment microstructure.

Therefore, improving product consistency requires full-process manufacturing control.

3. Customers Require Wear Solutions Adapted to Different Mining Conditions

During product consultations, Chilean mining customers also focused on wear part selection under different ore conditions.

Different mines have variations in:

· Ore hardness;

· Equipment load;

· Continuous operating time.

Therefore, a single material solution cannot meet all working conditions.

Based on customers' equipment models, operating environments, and wear conditions, Haitian provides customized recommendations for material selection and structural optimization.

Haitian Heavy Industry Wear Solution

To address the challenges reported by global mining customers, Haitian Heavy Industry has established a complete control system covering material design, casting, and manufacturing processes.

1. High Manganese Steel Optimization for Improved Impact Resistance

According to different customer operating conditions, Haitian provides high manganese steel solutions including Mn13Cr2 and Mn18Cr2.

Key material control factors include:

· Carbon content control;

· Optimization of manganese and chromium ratio;

· Reduction of harmful elements.

Through optimized material composition design, the products achieve:

· Excellent initial toughness;

· Stable work-hardening capability;

· Strong impact resistance.

These materials are widely used for mining wear components including:

· Jaw Crusher Plates;

· Cone Crusher Liners;

· Crusher Mantles.

2. High-Purity Molten Steel Control to Reduce Internal Defects

To address customer concerns regarding cracking and inconsistent service life, Haitian focuses on improving molten steel quality throughout the production process.

Raw Material Control

Strict selection of:

· Ferromanganese;

· Ferrochrome;

· Alloy materials;

helps reduce the introduction of impurities.

Smelting and Purification Process

During melting, Haitian applies:

· Slag refining;

· Deoxidation treatment;

· Dynamic slag removal;

· Molten steel settling;

to reduce oxide inclusions and gas-related defects.

Pre-Casting Inspection

Before pouring, each batch of molten steel is analyzed through furnace-side testing equipment.

Key elements under strict control include:

· C (Carbon);

· Mn (Manganese);

· Cr (Chromium);

· Mo (Molybdenum);

· P (Phosphorus);

· S (Sulfur).

This ensures stable material performance and consistent product quality.

3. Casting and Heat Treatment Optimization for Long-Term Reliability

During manufacturing, Haitian applies advanced casting equipment combined with strict process control to reduce:

· Porosity;

· Shrinkage defects;

· Internal casting imperfections.

Meanwhile, through standardized heat treatment processes, Haitian improves:

· Austenitic microstructure;

· Residual stress control;

· Balance between toughness and wear resistance.

This enables wear parts to withstand long-term continuous operation in harsh mining environments.

Product Applications

Based on different regional customer requirements, Haitian provides the following wear solutions:

Jaw Crusher Plates

Application:

Primary crushing of mined ores.

Optimization Focus:

· Improved impact resistance;

· More uniform wear distribution;

· Extended replacement intervals.

Cone Crusher Liners

Application:

Secondary and fine crushing operations.

Optimization Focus:

· Enhanced work-hardening performance;

· Reduced abnormal wear;

· Improved operational stability.

Customer Feedback and Cooperation Progress

Through technical exchanges with mining customers from South Africa, Russia, and Chile, Haitian Heavy Industry has gained deeper insights into the practical requirements of different mining regions.

Customers recognize Haitian’s comprehensive capabilities in:

· Material design;

· Molten steel control;

· Casting technology;

· Heat treatment optimization.

Based on feedback from the South African mining customer, under similar operating conditions, Haitian wear parts demonstrated:

· More stable wear performance;

· Improved impact resistance;

· Longer operating cycles;

through high-purity molten steel control and optimized manufacturing processes.

Haitian will continue developing more precise and efficient wear solutions based on the different operating conditions of global mining customers.

Project Summary

The service life of mining wear parts is not determined by a single factor, but by the combined influence of:

Material Design + Molten Steel Purity + Casting Quality + Heat Treatment Process + Actual Operating Conditions

Haitian Heavy Industry follows the manufacturing philosophy of:

“Purify the molten steel first, then produce the casting.”

Through comprehensive quality control throughout the entire production process, Haitian provides reliable crusher wear solutions for global mining customers, helping reduce maintenance costs, minimize equipment downtime, and improve overall production efficiency.