Composition analysis
Microprocessor-based spectro analysis of every melt against the grade specification.
Quality · Machining & testing · R&D
Quality, down to the microstructure
A quality-driven company with focus on total customer satisfaction — thorough testing at every stage of manufacturing.
Quality gates
Seven checks between melt and mill
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Raw material
Tested scrap, pig iron and alloys
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Melt chemistry
Composition balanced per grade
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Casting
Centrifugal or static casting, per grade
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Hardness
Shore hardness mapped across the barrel
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Microstructure
Checked on every cast batch
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Balancing
Dynamic balancing before dispatch
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Certificate
Test certificate with every roll
Quality control programme
Listening first, testing always
Our quality control programme succeeds through the professionalism of our workforce and direct communication with our clients. Communication means listening to the customer and focusing on their needs — new policies, instructions or specifications set the guidelines that ensure the quality of every roll we make or service.
Our quality control department works closely with the production floor to ensure all rolls conform to the highest standards and procedures. Years of experience, the dedication of our foundrymen and careful selection of high-grade tested raw materials ensure every roll leaving our lines is of the highest quality.
Test certificate
What each certificate records
- Roll number and grade
- Chemical composition
- Hardness across the barrel
- Dynamic balance
Inside a double-poured roll
Hard outside, tough inside
A double-poured roll is cast in two layers. The outer shell is hard and resists wear; the core inside is softer and tougher, so the roll takes shock loads without cracking. The chart shows the hardness from the surface to the centre.
- Chilled shell
- 70–85 Shore C
- Core
- 35–45 Shore C
Tested at every stage
Casting, machining, finishing — checked throughout
Regular quality checks and thorough testing are carried out during each stage of manufacturing. Microprocessor-based equipment tests composition, hardness and dynamic balancing; the data is stored and analysed regularly, ensuring rolls that are uniform in hardness and chill depth, with adequate ductility, high wear resistance and a consistent hardened layer.
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Hardness & chill depth
Shore hardness verified across the barrel — uniformity, chill depth and a consistent hardened layer.
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Dynamic balancing
Rolls dynamically balanced at different RPM for smooth running at mill speed.
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Ultrasonic & metallurgical
Grain size and microstructure tests after heat treatment; ultrasonic testing for internal soundness.
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Measuring a turned shaft -
Under the microscope -
Sample analysis
Machining & testing
Precision finishing to your drawing
Rolls that pass our tests move to the machine shop: high precision lathes, radial drills, boring machines, wobbler milling and grinding machines. Roll grinders with special concave and convex devices grind roll necks — tapered and straight — to very close tolerances, and every finished roll is checked for size before dispatch.
- High precision lathes & roll grinders — necks tapered and straight
- Special purpose milling for wobblers & driving ends
- High precision boring — roundness & concentricity of bore
- Hardening & tempering furnaces, microprocessor controlled
- Stress relieving of special SG iron rolls
- Groove cutting to customer pass design
Research & development
Research that shows in every roll
Our research and development work has produced rolls of high quality at reasonable prices, valued by customers in India and abroad.
Test certificates for composition, hardness and balancing come with every dispatch.
