Discharge End Liners

Discharge End Liners By Qiming Casting

Qiming Casting is a professional manufacturer of ball mill liners, with the ability to produce high manganese steel and chromium-molybdenum alloy steel discharge end liners according to customer-provided drawings. Our production process is based on the latest technology and strict quality control standards, ensuring that our products meet the highest standards of performance and durability in the industry.

Manganese Steel

High manganese steel (Mn14) is a commonly used material for ball mill liners due to its excellent toughness and work-hardening properties. It is particularly effective in applications where impact resistance is a key requirement. Qiming Casting’s high manganese steel liners are designed to withstand the high impact forces generated by the grinding media and material inside the ball mill, significantly reducing wear and extending the service life of the liners.

Spec Available

Name Chemical Elements(%)
C Si Mn Cr Mo Cu P S
High Manganese Liner MN14 0.9-1.5 0.3-1.0 11-14 0-2.5 0-0.5 0.05 0.06 0.06
Super-high Manganese Liner Mn18Cr2 1.01.5 0.3-1.0 16-19 0-2.5 0-0.5 0.05 0.06 0.06

Physical Property & Microstructure

Name Surface(HRC) Ak(J/cm2 Microstructure
High Manganese Liner Mn14 240 100 A+C
Super-high Manganese Liner Mn18Cr2 260 150 A+C
     Carbide    Austenite  

Specification

Size Hole Dia.(mm) Liner Length(mm)
40 40 250 250
Tolerance +2

0

+3

0

+2 +3

Chromium-molybdenum Alloy Steel

Chromium-molybdenum alloy steel, on the other hand, offers a combination of high strength and toughness, making it ideal for applications where both wear resistance and impact resistance are needed. Qiming Casting’s chromium-molybdenum alloy steel liners are heat-treated to optimize their mechanical properties, providing superior performance in demanding grinding environments.

Spec Available

Name Chemical Elements(%)
C Si Mn Cr Mo Cu P S
High Chrome

Alloyed Liner

2.03.6 0-1.2 0-2.0 8-26 3.0 1.2 0.06 0.06
Middle Chrome

Alloyed Liner

2.03.3 0-1.2 0-2.0 38 3.0 1.2 0.06 0.06
Low Chrome

Alloyed Liner

2.13.6 0-1.5 0-2.0 13 0-1.0 1.2 0.06 0.06

Physical Property & Microstructure

Name Surface(HRC) Ak(J/cm2 Microstructure
High Chrome

Alloyed Liner

58 3.5 M+C+A
Middle Chrome

Alloyed Liner

48 10 M+C
Low Chrome

AlloyedLiner

45 15 M+C+P
Martensite      Carbide    Austenite     Pearlite

Specification

Size Hole Dia.(mm) Liner Length(mm)
40 40 250 250
Tolerance +2

0

+3

0

+2 +3

Our production process begins with the careful selection of raw materials, followed by melting and casting using advanced induction furnaces. The castings are then heat-treated to achieve the desired microstructure and properties, and finished with precise machining to ensure a perfect fit with the customer’s ball mill. Quality control checks are performed at every stage of production to ensure that our liners meet the highest standards of quality and performance.

Qiming Casting’s ball mill liners are widely used in the mining, cement, power generation, and other industries where grinding operations are critical. Our commitment to quality, service, and innovation has made us a trusted supplier to customers around the world. Contact us today to discuss your specific requirements and receive a quote for your next ball mill liner project.