Material Grade: GS140, GS150, GS160, GS190

Anti-Sticking Universal Section & Bar Mill Graphitic Steel Rolls (GS Rolls)

Designed to provide a unique combination of mechanical strength and thermal fatigue resistance. The GS series incorporates controlled amounts of free graphite within a tempered pearlitic matrix, assisting in self-lubrication and reducing the risk of fire crazing in heavy-duty roughing and section rolling stands.
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Graphite steel mill roll with enhanced thermal conductivity

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Key Mill Applications (Recommended Stands)

Universal Section Mills & Billet Rolling

Applicable Grades: GS150, GS160, GS190

Focus: Engineered for roughing and intermediate stands in universal section mills, structural rail/beam lines, and primary billet mills. Excellent structural strength combined with uniform wear resistance ensures precise control over complex profiles.

Anti-Sticking Hot Strip Roughing & Edging

Applicable Grades: GS140, GS150

Focus: Designed for hot-rolled strip roughing work rolls and vertical edging stands. The presence of free graphite acts as a natural solid lubricant, drastically reducing friction and effectively preventing rolling slippage or strip welding.

Wire Rod & Bar Mills (Roughing & Intermediate Stands)

Applicable Grades: GS160, GS190

Focus: Optimized for intense thermal cycling conditions in bar and high-speed wire rod roughing trains. Superior thermal shock resistance and minimal hardness drop guarantee extended campaign life and stable roll profile retention.

Chemical Composition & Physical Properties

DURON’s Graphitic Steel Rolls (GS Rolls) feature an anti-sticking microstructure tailored for severe friction conditions. We optimize the distribution of free graphite through precise control of Silicon and Carbon content, introducing internal lubrication that limits rolling wear. By establishing a balanced metallurgical matrix, these specialized graphitic steel rolls provide high thermal cracking resistance and steady pass durability under continuous profiles. The chemical compositions and metallurgical parameters for these graphitic steel rolls are detailed below:

Code (代码) C Si Mn Cr Ni Mo Barrel Hardness (HSD)
GS140 1.30-1.50 1.30-1.60 0.50-1.00 0.40-1.00 – 0.20-0.50 36-46
GS150 1.40-1.60 1.00-1.70 0.60-1.00 0.60-1.00 0.20-1.00 0.20-0.50 40-50
GS160 1.50-1.70 0.80-1.50 0.60-1.00 0.50-1.50 0.20-1.00 0.20-0.80 45-55
GS190 1.80-2.00 0.80-1.50 0.60-1.00 0.50-1.00 0.60-2.00 0.20-0.80 50-60

* P ≤ 0.035, S ≤ 0.030 controlled for all GS series grades.
* Neck Hardness: ≤ 46-50 HSD depending on specific grade.

Metallurgical Excellence

Why Choose DURON Graphitic Steel Rolls for Universal Section Mills?

  • Inherent Anti-Sticking Performance: The uniform distribution of free graphite nodules provides stable anti-scabbing and lubrication properties, reducing strip surface scratching and eliminating roll pass welding.

  • Optimized Hardness and Toughness Integration: The heat-treated pearlitic or bainitic steel matrix supports high mechanical strength, mitigating pass groove spalling under cyclic horizontal and vertical loads.

  • Consistent Microstructural Dressing Response: The deep hardening layer ensures minimal wear fluctuations across the usable diameter, allowing predictable dressing intervals and long campaign life.

Multi-Stand Material Integration: For comprehensive campaign optimization across universal steel production lines, engineers frequently align these GS series finishing rolls with our heavy-reduction Adamite Rolls or high-impact Alloy Cast Steel Rolls in the upstream roughing configurations.

Manufacturing Control & Inspection

100% Non-Destructive Testing

Every roll undergoes rigorous Ultrasonic Testing (UT) at the working layer and bonding zone to eliminate internal voids and ensure structural integrity under heavy loads.

Precision CNC Machining

Roll necks and barrel profiles are machined using heavy-duty CNC equipment, strictly adhering to your drawing's dimensional and runout tolerances for perfect bearing fitment.

Metallurgical Verification

Chemical compositions are analyzed via spectrometer pre-pouring, and multi-point hardness mapping is conducted post-heat treatment to guarantee the specified hardness gradient.

Quality Traceability

All dispatched rolls are accompanied by a comprehensive inspection certificate, documenting chemical composition, hardness distribution, and UT reports.

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