Pearlitic Chromium-Molybdenum Steel Liners Boost Mine Grinding Upgrades

In the grinding production links of mining, metallurgy, cement and other industries, liners, as core wear-resistant components, their performance directly determines the grinding efficiency, operational stability and comprehensive production costs of equipment. With the continuous improvement of industry requirements for production efficiency, energy conservation and consumption reduction, traditional liner materials can no longer meet the high-intensity operation needs under complex working conditions. Against this background, pearlitic chromium-molybdenum steel liners, relying on their unique material advantages and excellent service performance, have become the preferred solution for many enterprises to upgrade grinding equipment. They can even increase ore grinding efficiency by 20%, empowering and improving production efficiency.

Pearlitic chromium-molybdenum steel liners are made of high-quality pearlitic chromium-molybdenum alloy steel, with common material grades including ZG35CrMo, ZG42CrMo and other customized alloy grades. They are manufactured through precision casting, CNC machining and strict quenching + tempering heat treatment processes. Their core composition ratio is scientific, with a carbon content between 0.30% and 0.45%, matched with 0.8% to 1.5% chromium element and 0.2% to 0.6% molybdenum element, supplemented by trace elements such as silicon and manganese. This forms a special structure with fine pearlite as the matrix and dispersed chromium carbide hard phases, which is the key to its combination of high strength, high wear resistance and excellent toughness.

• Superior Wear Resistance: The fine pearlite matrix ensures high hardness (HRC 45-55) and structural compactness, with embedded chromium carbide hard phases further enhancing wear resistance. The service life is 2-3 times longer than that of ordinary carbon steel liners, significantly reducing replacement frequency and maintenance costs.
• Excellent Impact Toughness: While having high hardness, it maintains excellent impact toughness (impact energy ≥35J/cm²), capable of resisting the impact of 5-10kg large ore lumps, effectively preventing cracking and spalling, and ensuring stable operation.
• Good High-Temperature Stability: The addition of molybdenum elements refines the grain structure, allowing stable mechanical properties in high-temperature environments of 300-500℃, ideal for cement clinker grinding.
• Excellent Welding Performance: The pearlite matrix allows for repair by surfacing welding when partially damaged, significantly reducing equipment downtime and replacement costs, and improving comprehensive utilization efficiency.

Relying on their dual advantages of "wear resistance + impact resistance", pearlitic chromium-molybdenum steel liners are widely used in the medium and coarse grinding stages of ball mills and semi-autogenous mills in the mining industry. They are especially suitable for the grinding operations of medium-hard materials such as iron ore, copper ore, limestone and cement raw materials. Whether it is large-scale ore processing in metallurgical mines, raw material grinding in the cement industry, or powder grinding production in the coal industry, it can play a core role with stable performance, providing customized wear-resistant solutions for different working conditions.

To ensure product quality, we have established a strict full-process quality control system. Each batch of pearlitic chromium-molybdenum steel liners will undergo multiple strict inspections before leaving the factory, ensuring that all product indicators meet international and domestic standards such as ASME, JIS, GB and DIN. These inspections include:

• Ultrasonic testing (UT)
• Magnetic particle testing (MT)
• Metallographic analysis
• Hardness testing
• Dimension calibration

We have our own production factory with 20 years of foundry operation experience. Our professional technical team can customize the production of liners of different sizes and models according to the drawings, samples or specific working condition requirements provided by customers. The machining tolerance is accurately controlled within ±0.01mm, fully meeting the installation and adaptation requirements of various grinding equipment.

• 24/7 After-Sales Support: We provide all-weather after-sales service support.
• 12-Month Warranty: Products enjoy a 12-month warranty period. If quality problems occur due to materials or manufacturing processes, we will bear the shipping costs and provide free replacement.
• Customization Options: For customized needs, we can adjust material composition and hardness according to working conditions, and engrave customers' logos, model numbers, and other marks on the liners.
• Flexible Logistics: We support various transportation methods such as international couriers (DHL, UPS, EMS, FedEx), air freight, and sea freight. We also provide drop shipping services to deliver goods directly to the terminal address designated by customers.

With rich manufacturing experience, customized solutions, professional technical teams and stable product quality, our pearlitic chromium-molybdenum steel liners have been exported to more than 70 countries and regions around the world, winning wide recognition from customers at home and abroad. In addition to pearlitic chromium-molybdenum steel liners, we also produce various wear-resistant castings for grinding and crushing equipment, such as mill liners (cylinder liners, end liners, lifter bars), jaw plates, blow bars, crusher hammers, grinding balls, etc., which can provide customers with one-stop procurement services for wear-resistant components.

Choosing pearlitic chromium-molybdenum steel liners means choosing an efficient, stable and economical grinding production solution. If you have relevant product needs, you only need to provide detailed information such as equipment model, installation dimensions and grinding material characteristics, and our technical team will tailor the optimal solution for you to help your production efficiency upgrade again.

Contact us:

Tel: 0086- 18151503523‬‬   (What's app)

Cell: 0086-‪18151503523

Fax: 0086-510-6879 2172

E-mail: sales@ebcastworld.com

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