Spheroidal graphite SG cast iron rolls for rolling mills

Spheroidal Graphite (SG) Cast Iron Rolls for Rolling Mills

Kathuria Techmech supplies high-strength Spheroidal Graphite (SG) Cast Iron Rolls for industrial rolling mill applications. Also known as nodular cast iron rolls or ductile iron rolls, these products are designed for applications requiring a combination of strength, toughness and wear resistance.

SG cast iron contains graphite in the form of spherical nodules distributed throughout its metallic matrix. This microstructure provides improved ductility and toughness compared with conventional flake-graphite grey cast iron. The final mechanical properties depend on the chemical composition, matrix structure, manufacturing process and heat treatment.

We offer pearlitic nodular cast iron roll grades with different barrel hardness specifications to suit varying rolling mill requirements. Custom roll dimensions and technical specifications can be discussed based on the intended application and operating conditions.

Looking for SG rolls for your rolling mill? Contact Kathuria Techmech to discuss your requirements and request a product quotation.

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Chemical Composition of SG Cast Iron Rolls

The chemical composition of spheroidal graphite cast iron influences its microstructure, hardness, strength and overall performance. The following composition is based on the specifications provided for the SGI material grade.

CHEMICAL COMPOSITION
Symbol C Si Mn Cr Ni Mo Mg
SGI 3.00-3.50 1.20-2.00 0.20-1.00 0.20-0.80 1.00-1.50 0.20-0.80 ≥0.04

Mechanical Properties of SG Cast Iron Rolls

Selecting the appropriate SG cast iron roll requires evaluating barrel hardness, neck hardness and tensile strength. Kathuria Techmech provides the following reference material specifications for different SGI grades.

Physical and Mechanical Properties of SG Cast Iron Rolls
Material code Barrel Hardness (HSC) Neck Hardness (HSC) Tensile strength (Mpa)
SGI I 50-55 35-55 ˃450
SGI II 55-60 35-55 ˃450
SGI III 60-65 35-55 ˃450

The appropriate grade should be selected according to the rolling mill configuration, material being rolled, rolling temperature, operating conditions and required roll performance. Contact our team for assistance with grade selection.

Features and Benefits of Spheroidal Graphite Cast Iron Rolls

SG cast iron rolls are used in rolling mill applications where a suitable balance of mechanical strength, toughness and surface hardness is required. Their performance depends on the selected material grade and manufacturing specifications.

  • High Mechanical Strength: SG iron offers a strong metallic matrix with mechanical properties suitable for demanding industrial applications.
  • Improved Toughness: The spheroidal graphite structure contributes to improved ductility compared with conventional grey cast iron.
  • Hardness Options: Different barrel hardness grades are available to address varying roll operating requirements.
  • Wear Resistance: Appropriate material composition and matrix structure help achieve the required wear performance.
  • Application-Based Selection: Roll grades and specifications can be evaluated according to mill operating conditions.
  • Custom Specifications: Roll dimensions and technical requirements can be discussed for individual rolling mill applications.

Applications of SG Cast Iron Rolls

Spheroidal graphite cast iron rolls are used in industrial rolling operations where their mechanical properties and hardness characteristics meet the requirements of the mill. Depending on the selected grade and roll design, applications may include:

  • Steel rolling mill applications.
  • Bar and section rolling operations.
  • Industrial metal rolling processes.
  • Rolling operations requiring nodular cast iron rolls.
  • Specialized mill applications based on material specifications.

The final application suitability should be confirmed by evaluating the rolling schedule, product dimensions, operating temperature and mill configuration.

SG Cast Iron Rolls Manufacturer and Supplier in India

Kathuria Techmech supplies spheroidal graphite and pearlitic nodular cast iron rolls for industrial rolling mill requirements. We understand that roll selection involves more than choosing a material grade. Hardness, dimensions, mill configuration and operating conditions must all be considered.

Our team can discuss your technical requirements, available material grades and suitable roll specifications. Whether you are sourcing SG cast iron rolls for an existing rolling mill or evaluating replacement rolls, share your application details to help us understand your requirements.

to enquire, provide your required roll dimensions, material grade, hardness range, quantity and intended application. Our team will review the details and assist with your quotation enquiry.

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Frequently Asked Questions About SG Cast Iron Rolls

1. What are spheroidal graphite cast iron rolls?

Spheroidal graphite cast iron rolls are rolling mill rolls manufactured using SG iron, in which graphite occurs mainly as spherical nodules within the metallic matrix. They are also known as nodular cast iron rolls or ductile iron rolls.

2. What is the difference between SG iron and grey cast iron?

SG iron contains graphite in spherical nodules, whereas grey cast iron generally contains graphite in flake form. This difference in graphite structure contributes to the higher ductility and toughness of SG iron.

3. What are the hardness grades available for SG rolls?

The reference specifications on this page include SGI I, SGI II and SGI III grades with barrel hardness ranges of 50-55 HSC, 55-60 HSC and 60-65 HSC, respectively.

4. Where are SG cast iron rolls used?

SG cast iron rolls are used in industrial rolling mill Applications where their strength, toughness and hardness characteristics are suitable for the required rolling process.

5. Can SG cast iron rolls be supplied in custom sizes?

Custom dimensions and technical requirements can be discussed with Kathuria Techmech. Share your roll drawings, dimensions, material grade and application details for evaluation.

6. How can I request a quotation for SG cast iron rolls?

Contact Kathuria Techmech by phone, email or WhatsApp. Provide your required dimensions, grade, hardness and quantity to help our team review your quotation enquiry.

Looking for SG Cast Iron Rolls for Your Rolling Mill?

Discuss your spheroidal graphite cast iron roll requirements with Kathuria Techmech. Share your technical specifications and application details to receive assistance with suitable product options and quotation requirements.

Call: +91 97114 66783 | +91 77196 17471

Email: info@kathuriatechmech.com

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