STANDARD ALLOYS INDIAHigh-chromium white iron
Raw meal, cement and slag grinding.
ASTM A532 Class II and III · IS 4771 · ISO 21988 / EN 12513
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VRM rollers
Rollers press the material bed against the rotating table. As the profile wears, grinding pressure and output fall and vibration rises, so the alloy and the profile matter equally.
- Works in
- Roller tyres and roller segments of vertical roller mills for raw meal, cement, slag and coal.
- Industries
- Cement, Thermal power and steel
- Materials
- 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
- 01Profile wear across the faceHigh-chromium iron hardened through the section.
- 02Spalling and crackingAlloy and heat treatment designed for the section thickness.
- 03Uneven wear that forces an early changeSegments made reversible where the design allows.
02
Choosing the grade
Typical values from the governing standards. A metallurgist confirms the grade for your duty with every quotation.
Ni-Hard (nickel-chromium white iron)
Coal grinding, where it has a long service record.
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.
VRM rollers
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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