Ball Mill Cylinder Liner High Manganese Steel Shell Liner for Mining Grinding

Product Introduction

Ball mill cylinder liner (shell liner) is the core wear-resistant spare part fixed on the inner wall of ball mill shell. It serves as a sacrificial protective layer to prevent direct impact and abrasion from ore and steel balls, protecting the mill cylinder from deformation and damage. Different liner profiles control the movement trajectory of grinding media, optimizing cascading and tumbling action, raising grinding throughput and cutting power consumption.

We supply high manganese steel (Mn13, Mn13Cr2, Mn18Cr2), high chrome cast iron and alloy cast steel liners. Wave, step and flat liner profiles are available for overflow and grate ball mills. Custom casting is supported according to customer drawings, including bolt hole layout, dimensions and weight.

Strict quality control is implemented: chemical composition test, hardness inspection, MT magnetic particle testing and UT ultrasonic testing are optional. All products meet mining standards for copper and iron ore projects in Chile and Peru. Seaworthy packing and shipment from Qingdao port.

Key Advantages

• Impact-hardening high manganese steel, excellent toughness for heavy coarse grinding
• Custom shapes & sizes, precise casting for easy installation
• Full inspection reports available before delivery
• Long service life, reduce mill shutdown & replacement frequency
• OEM & ODM for various mining and cement grinding systems

Inspection Procedure

1. Raw Material Inspection Check chemical composition of molten steel by spectrometer. Verify alloy elements content to meet casting standard. Reject unqualified raw material before pouring.
2. Casting Visual Inspection Visual check for surface defects: sand hole, shrinkage, crack, slag inclusion. Clean casting riser and burrs. Mark defective pieces for rework or scrap.
3. Heat Treatment Inspection Monitor heat treatment temperature & holding time. Random sampling for hardness test (Brinell / HRC) to guarantee mechanical performance.
   
4. Dimension & Weight Inspection Measure overall size, thickness, bolt hole position and diameter. Compare with customer drawing. Check single piece weight, record deviation.
   
5. Non-Destructive Testing (NDT)

• MT Magnetic Particle Testing: Detect surface & near-surface cracks
  
• UT Ultrasonic Testing: Check internal shrinkage, porosity and inclusions NDT reports can be issued upon client request.
  

6.Final Sampling Inspection Random recheck of appearance, dimension and hardness. Compile full inspection documents including chemical report, hardness record and NDT certificate.

7.Packing Inspection Check seaworthy packing, mark part number, quantity and shipping mark before loading.

Application

Copper mine, iron ore mine, mineral processing plant, cement plant. Suitable for overflow ball mill, grate ball mill.