Material Grade: AD1401, AD1601, AD180

Universal Section, Tube & Strip Mill Adamite Rolls (ASB Rolls)

Engineered to bridge the metallurgical gap between steel and iron. The Adamite (AD) series offers a versatile combination of fracture toughness and wear resistance. Formulated with specific carbon and alloy levels, it provides stable performance for section profile shaping and reliable load distribution in primary rolling applications.

By Material

By Application

By Tooling

Key Mill Applications (Recommended Stands)

Universal Section, Rail & Beam Mills

Applicable Grades: AD1601, AD180

Focus: Specially designed for roughing and intermediate stands in large/medium section, structural beam, rail, and universal mill lines. Delivers excellent pass flange protection and micro-cracking resistance under heavy tortional stress.

Seamless Tube Mills & Billet Breakdown Stands

Applicable Grades: AD1401, AD1601

Focus: Engineered for roughing stands in seamless steel tube mills and primary billet rolling mills. The ideal carbon-balance structure guarantees superior mechanical toughness and high thermal shock resistance to eliminate catastrophic roll fracturing.

Hot Strip Roughers & Vertical Edging Rolls

Applicable Grades: AD1401, AD180

Focus: Tailored for hot-rolled strip roughing work rolls, intermediate backup rolls, and vertical edging stands. Provides high uniform wear resistance and steady bite performance, ensuring long-campaign rolling stability before the finishing train.

Chemical Composition & Physical Properties

DURON’s Adamite Rolls (ASB Rolls) offer an optimal combination of structural toughness and wear resistance. Through controlled additions of Chromium, Nickel, and Molybdenum, we tailor the carbide distribution within the pearlitic matrix to ensure consistent material density. By precise balancing of the carbon equivalent, these specialized adamite rolls exhibit reliable resistance to thermal cracking and mechanical fatigue in heavy breakdown stands. The chemical compositions and metallurgical specifications for these adamite rolls are detailed below:

Code (代码)	C	Si	Mn	Cr	Ni	Mo	Barrel Hardness (HSD)
AD1401	1.30-1.50	0.30-0.60	0.70-1.10	0.80-1.20	0.50-1.20	0.20-0.60	35-50
AD1601	1.50-1.70	0.30-0.60	0.80-1.30	0.80-2.00	≥ 0.20	0.20-0.60	40-60
AD180	1.70-1.90	0.30-0.80	0.60-1.10	0.80-1.50	0.50-2.00	0.20-0.60	45-60

* Neck Hardness limits: AD1401 ≤ 45 HSD; AD1601/AD180 ≤ 50 HSD.
* P ≤ 0.035, S ≤ 0.030 for all AD series grades.

Metallurgical Excellence

Why Choose DURON Adamite Rolls for Heavy Reduction Stands?

Balanced Carbon-Alloy Matrix : With carbon levels strictly controlled between 1.30% and 1.90%, the microstructure avoids the extreme brittleness of high-carbon iron while achieving higher wear resistance than standard cast steel. This makes it an effective compromise for varied roughing tasks.
Controlled Carbide Distribution : The specific ratio of Chromium, Nickel, and Molybdenum promotes a uniform distribution of fine carbides. This structural feature aids in maintaining consistent friction and reducing pass deterioration during heavy section rolling.
Reliable Operational Yield: By offering improved thermal crazing resistance compared to cast steel and better impact resistance compared to cast iron, the Adamite series supports continuous mill operation and predictable maintenance cycles.
Multi-Stand Material Integration: To optimize roll campaign synergy across the full rolling mill train, technical operators frequently deploy these AD-series roughing rolls in sequence with our stable Pearlitic Nodular Iron Rolls or high-performance Indefinite Chilled Nodular Iron Rolls in the downstream intermediate and finishing 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.