STANDARD ALLOYS INDIACr-Mo and martensitic steels
First chambers and other high-impact positions.
IS 4896 · Customer specification
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Mill liners
Liners protect the shell and lift the ball charge. In the first chamber they must take the impact of large balls; in the fine chamber they classify the charge and resist abrasion.
- Works in
- Shell liners, lifters and end liners of ball and tube mills grinding cement, ore and coal.
- Industries
- Cement, Mining, Thermal power and steel
- Materials
- Cr-Mo steel, High-chromium iron, Ni-Hard
- Size
- Single pieces from 3 kg to 7 tonnes, to drawing
- Supplied
- As cast, or machined to drawing
- Inspection
- Chemistry and hardness on every heat; UT, MPI or DPT and a dimensional report as specified
- From a worn part
- Yes. Send the part or photographs with key dimensions and we will reverse-engineer it
01
How it fails and what we do about it
- 01Lifter wear that flattens the profileProfile matched to mill speed and media size.
- 02Cracking under ball impactTougher Cr-Mo steel where impact is high.
- 03Bolt-hole wear and looseningBolt holes and seating faces to drawing.
02
Choosing the grade
Typical values from the governing standards. A metallurgist confirms the grade for your duty with every quotation.
High-chromium white iron
Fine-grinding chambers with smaller media.
ASTM A532 Class II and III · IS 4771 · ISO 21988 / EN 12513
Ni-Hard (nickel-chromium white iron)
Coal tube mills and low-impact positions.
ASTM A532 Class I · IS 4771 · ISO 21988 / EN 12513
03
What we control
- Hardened through the sectionWhite iron alloyed and heat treated for the thickness of each segment, not just its surface.
- Structure checkedMicrostructure examined with an image analyser, so carbide and matrix are verified, not assumed.
- Fit as a setSegments checked against each other and against gauges so they assemble without forcing.
- Machined to drawingBores, journals and fixing faces finished on vertical lathes and machining centres.
04
For a quotation, send any of these
- Equipment make and model, or the OEM part number
- Drawing, or the worn part or photographs with key dimensions
- The grade used today and the life it gives
- Quantity per set and sets per year
No drawing? Send the worn part or photographs with key dimensions and we will reverse-engineer it.
Mill liners
A metallurgist reviews every enquiry and replies with a price, a lead time or the right questions.
Or call +91 145 269 5110
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