Forged and Machined Work Roll – Alloy Steel, Heat-Treated & Precision Ground for Rolling Mills-Jiangsu Suao Metal Product Co., Ltd.

Forged and Machined Work Roll – Alloy Steel, Heat-Treated & Precision Ground for Rolling Mills

Our forged and machined work rolls are engineered for high-performance rolling mills, combining durability, precision, and heat resistance. Made from high-quality alloy steels like ASTM A681 D2, AISI L6, A2, and other high-alloy grades, these rolls are heat-treated and precision ground for consistent hardness, wear resistance, and optimal rolling quality.Available in custom diameters, lengths, and hardness ranges, these rolls are suitable for hot rolling, cold rolling, and non-ferrous metal production, including steel, aluminum, and copper.Example standard size: Ø500 mm × 2000 mm (19.685 in × 78.74 in)

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Key Features

·Superior Hardness: Heat-treated to 58–64 HRC for excellent wear resistance and long service life.
·Precision Ground: Tight tolerances (e.g., Ø500 mm ±0.05 mm, length ±1 mm) for smooth operation and consistent sheet quality.
·Alloy Steel Durability: D2, 86CrMoV7, L6, and A2 steels provide high edge retention and fatigue resistance.
·High-Temperature Resistance: Suitable for hot rolling mills up to ~600°C (1112°F).
·Custom Sizes: Diameters from Ø200–1500 mm and lengths 1000–6000 mm tailored to mill requirements.
·Cost-Effective Performance: Forged construction reduces downtime and maintenance costs.

Typical Steel Grades and Hardness

Steel Grade	Typical Hardness (HRC)	Core Hardness (HRC)	Key Properties	Typical Applications
ASTM A681 D2	58–64	32–36	High-carbon, high-chromium tool steel for wear resistance	Cold rolling of steel and aluminum sheets
AISI L6	56–62	30–34	Oil-hardening tool steel with high toughness	Non-ferrous and in-house machined rolls
AISI A2	58–62	28–32	Air-hardening tool steel, precision cold work	Cold rolling and finishing rolls
9Cr2Mo	55–60	30–32	Cr-Mo alloy steel for hot rolling billets	Hot rolling applications
5CrMnMo	54–60	28–32	Cr-Mn-Mo alloy steel for rough rolling	Heavy-duty roughing mills
86CrMoV7	58–64	32–36	High-alloy tool steel for cold rolling	High-precision cold rolling

Note: Grades like 1Cr9Mo are not typically used for work rolls and are excluded.

Typical Sizes & Dimensions

Diameter (OD, mm)	Length (mm)	Hardness (HRC)	Notes
200	1000	58–62	Small-scale rolling mills
300	1500	58–62	Medium mills
500	2000	58–64	Standard hot/cold rolling mills
700	3000	60–64	Large industrial mills
1000	4000	61–64	Heavy-duty mills
1500	6000	62–64	Ultra-large mills
Custom	Custom	58–64	Tailored to customer requirements

Manufacturing Process

1. Forging: Alloy steel billets are hot-forged to dense, near-net roll shapes.
2. Heat Treatment: Quenching and tempering for hardness of 58–64 HRC, enhancing wear resistance and toughness.
3. Precision Grinding: Cylindrical and journal surfaces ground to Ra ≤ 0.4 µm for smooth rolling.
4. Surface Finishing: Polished or chrome-plated for corrosion and marking resistance.
5. Quality Testing: Dimensional checks, hardness testing, and non-destructive testing (ultrasonic or magnetic particle inspection) ensure compliance with ASTM A681 standards.

Applications

·Rolling Mills: Hot rolling of steel/aluminum, cold rolling of precision strips, non-ferrous metal rolling.
·High-Speed Rolling: Advanced mills requiring uniform surface and minimal vibration.
·Heavy-Duty Industrial Use: Large-scale production lines requiring high-strength rolls.
·Secondary Uses: Limited precision structural components and tooling for manufacturing.

Delivery & Quality Assurance

·Delivery Conditions: Heat-treated, precision ground, ready for installation.
·Surface Conditions: Polished (Ra ≤ 0.4 µm), optional chrome plating.
·Compliance: ASTM A681, AISI, and equivalent international standards.
·Certificates: Material test reports per DIN EN 10204 3.1.