Customer faced premature roll life of the Top zone rolls in their new Slab Caster.
The rolls were subjected to extreme thermal cycling, oxidation, corrosive and abrasive conditions beside chemical attack from mould powders.
These rolls were positioned next to the mould box .
Industry
Steel
Location
Rourkela, INDIA
Component/Workpiece
Top Zone Rolls in Continuous Caster
Business Type
Integra - On Site
Job Type
Preventive
OEM
SMS
Type of Wear
Abrasion
Corrosion
Chemical attack
Tags
steel cladding
continuous casting
Base Metal
Chrome moly (X20Cr13,21Cr Mov 511)
General Dimensions (mm)
Dia range 130 ,165 &180 mm ,Lengths range from 735 to 870mm
Problem Description
The challenge the customer was facing
Premature failure of the Rolls like deep fire cracks and roll wear out .This resulted in break-outs and reduced Heat size leading to expensive down time of the Caster operation adding to the increased TCO
Customer was earlier using Rolls as per OEM drawing and cladding was done by other vendor. But did not get the desired life from these top zone rolls(from Mould to Bender zone)
Dia of the rolls range from 130 mm to 165mm .
Previous Service Life
2mo
Competitor
CST ,SMS,WEAR RESIST
Welding Alloys Solution
How WA solved the challenge
WA recommended another product to enhance the life of these rolls considering the harsh working environment in Top zones of the slab caster.
Foot rolls and other rollers in the top zone were refurbished with WA product CHROMECORE MS 2020-S.
After cladding the rolls were re machined with respect to OEM drawing for internal bores and bearing fit locations .
These work was done in the customer premises as part of long term contract awarded to WA.
Product Category
Consumables
WA Product Used
CHROMECORE MS 2020-S
Diameter
2.4 mm
Technical Advantages
Top zone rolls cladded with Chromecore MS 2020 achieved more than 2000 heats(3 lac tons) well above their previous bench mark
Customer also benefitted from reduced break-outs , less maintenance costs and quicker turn around time of the rolls availability to the spare segments.
Images (2)
Photos and visuals for this case study
Financial Impact
Solution Revenue
€1,160,000
Welding Procedure Specification (WPS)
3 layer(s) documented
Submission Details
Contributor
Muthu Kumar
muthukumar.jeganathn@welding-alloys.com
Created
April 15, 2026
Submitted
April 24, 2026
Approved By
Bastien Gerard
May 3, 2026
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