Customized Mn Steel Ball Mill Wear Liner SAG Mill AG Mill Liner Replacement

High Manganese Steel Mill Liners Wear Resistant Ball Mill SAG Mill AG Mill Liners for Mining Cement Industry

Product Description

Our company is a professional manufacturer of high end castings, focusing on multiple material systems including high manganese steel, high chromium alloy, alloy steel and ductile iron. Our core product lines cover mill liners for ball mills, jaw crusher wear parts and liners for autogenous and semi autogenous mills, providing reliable wear parts for the mining and mineral processing industry.

The mill liner is one of the most important wear components in grinding equipment. It is installed on the inner wall of the mill cylinder and end caps. Its main functions are to protect the mill shell from direct impact and abrasion of grinding media and materials, and to lift the grinding media to a proper height so that efficient impact and grinding can be achieved. The service life and performance of mill liners directly affect the grinding efficiency, energy consumption and maintenance cost of the whole grinding circuit.

We produce mill liners in various profiles, including wave type, rib type, step type, smooth type and combined type, to meet different grinding processes and discharge requirements. According to the working conditions, ore hardness, particle size and mill specifications, we can recommend suitable material grades and liner designs. High manganese steel offers excellent impact toughness and work hardening ability, high chromium alloy provides high wear resistance, alloy steel gives a good balance of strength and toughness, and ductile iron is suitable for certain specific working conditions. This multi material capability allows us to supply the most suitable liner solution for each application.

Applications

Mill liners are widely used in ball mills, autogenous mills and semi autogenous mills in mines, cement plants, power stations, chemical plants and other industries involving grinding and crushing processes. They are suitable for grinding ferrous and non ferrous ores such as iron ore, copper ore, gold ore, bauxite and nickel ore, as well as cement clinker, slag, limestone and other bulk materials.

Different working conditions require different liner solutions. For coarse grinding with large impact, high manganese steel liners are often preferred because of their high toughness and work hardening performance. For fine grinding and high abrasion conditions, high chromium alloy liners can provide longer service life. For large diameter mills and high throughput operations, alloy steel liners with optimized profile design help improve grinding efficiency and reduce downtime. We also supply liners for autogenous and semi autogenous mills used in large scale mining projects, where both impact resistance and wear resistance are critical.

Production and Quality Inspection

Raw material selection, melting and casting are carried out under strict process control. We use qualified raw materials and precise chemical composition control to ensure the final material grade meets the required standard. The melting process is monitored to control temperature and composition, and the casting process is designed to reduce shrinkage, porosity and other internal defects.

After casting, mill liners go through heat treatment to obtain the required combination of hardness and toughness. Heat treatment parameters such as heating temperature, holding time and cooling rate are strictly controlled according to the material grade and product size. Proper heat treatment is essential for improving wear resistance, impact toughness and overall service life.

Hardness testing is performed on each batch to verify that the liner meets the required hardness range. 3D scanning is used to check the overall profile, curvature and key installation dimensions, ensuring good fit with the mill shell and easy installation on site. MT magnetic particle testing and UT ultrasonic testing are applied to detect surface and internal defects such as cracks, porosity and inclusions. Chemical composition testing ensures that the material grade and alloy elements are within the specified range. Dimension inspection confirms that all installation sizes, bolt hole positions and thickness dimensions meet the drawings. Metallographic analysis is also carried out to evaluate the microstructure, grain size and phase composition, which helps confirm the effectiveness of heat treatment and the quality of the final product.

Support and Services

We provide OEM and ODM service for mill liner design and production. Our technical team can recommend suitable material grades, liner profiles and thickness designs based on your working conditions, ore properties, mill specifications and drawings. Custom sizes and drawings are accepted, and we can provide technical support from design to installation.

We offer timely response to inquiries, clear production progress updates and after sales technical support. If needed, our engineers can assist with installation guidance and maintenance suggestions to help extend liner service life and improve grinding efficiency. We aim to build long term cooperation with customers by providing stable quality, competitive prices and reliable service.

Packing and Shipping

Mill liners are packed in strong wooden pallets or wooden cases with proper protection to avoid damage during transport. Each package is clearly marked with product information, quantity, weight and shipping marks. For heavy and large size liners, we use reinforced packing and suitable fixing methods to ensure safe loading and transportation.

We support sea, rail and air transportation and can arrange shipment according to customer requirements. We also provide necessary shipping documents and can cooperate with customers' forwarders. Our goal is to ensure that products arrive at the destination safely and on time.