Custom Tungsten Carbide Flat‑Wire Rolls

The AstraRoll Custom Solid Tungsten Carbide Mill Roll is a high‑precision metallurgical rolling component designed explicitly for cold‑rolling operations demanding ultra‑tight dimensional tolerances, mirror‑grade surface finish and extended service life. Standard alloy‑steel mill rolls rapidly suffer from abrasive wear, surface scoring and dimensional deviation under repeated cold‑rolling loads for flat‑wire, electronic strip and non‑ferrous metal materials. This creates surface scratches, inconsistent workpiece gauge and frequent roll‑replacement downtime.

AstraRoll’s monolithic solid tungsten carbide mill rolls resolve these drawbacks by adopting vacuum‑sintered WC‑Co / WC‑Co‑Ni cemented carbide blanks, processed through multi‑stage CNC turning, cylindrical grinding and super‑mirror polishing. This one‑piece integrated shaft‑end structure eliminates assembly clearance risks. Every mill roll is precision‑machined with strict controls for perpendicularity, cylindricity and dimensional tolerance. It delivers stable rolling performance and defect‑free output for thin non‑ferrous metal substrates, with optional scratch‑free mirror surface finish.

• Product Category: Custom Solid Tungsten Carbide Cold Rolling Mill Roll
• Roll Body Material: Premium cemented carbide WC‑Co / WC‑Co‑Ni (Grade selected according to rolling workload & workpiece material)
• Overall Dimension: Fully customized to match mill stand size & rolling‑force requirements; OD 100‑380 mm, Roll Face Length 400‑800 mm
• Surface Finish: Standard fine grinding Ra 0.4‑0.8 μm; Optional mirror‑polished finish Ra ≤0.02‑0.04 μm Concentricity / Total Indicated Runout (TIR): ≤0.02 mm (Obtained by high‑precision CNC cylindrical grinding)
• Hardness: HRA 88‑93
• Dynamic Balance Rating: ISO 1940 G2.5
• Manufacturing Process: Vacuum sintering, CNC turning, rough grinding, precision cylindrical grinding, super‑finishing / mirror polishing
• Shaft Structure: Custom shaft geometry, shaft journals integrated or pre‑machined per customer drawings
• Inspection: 100% full dimensional & surface inspection before shipment
• Certification: ISO 9001

It delivers high‑hardness, wear‑resistant and dimensionally stable cold‑rolling performance for precision metal‑processing production lines:

• EV Flat‑Wire Manufacturing: Precision cold rolling for copper‑based motor flat‑wire, securing uniform wire thickness and flawless surface quality for new‑energy vehicle motor components.  
• Electronic Precision Strip Production: Cold‑rolling of ultra‑thin copper, copper‑alloy non‑ferrous strips used for connectors, shielding materials and electronic component substrates.  
• Non‑Ferrous Metal Cold‑Rolling Mills: Precision reduction rolling for copper, brass and other soft‑metal strips under medium‑to‑high rolling‑load operating conditions.  
• Specialty Thin‑Gauge Metal Forming: Rolling processes where surface scratching, gauge deviation and frequent roll change‑outs must be strictly avoided.  

Superior Wear‑Resistant Cemented‑Carbide Material Matrix: Conventional forged alloy‑steel mill rolls wear quickly under continuous high‑pressure cold rolling, transferring scratches onto finished metal strips. AstraRoll solid mill rolls are manufactured from monolithic vacuum‑sintered WC‑Co or WC‑Co‑Ni carbide blanks. They provide outstanding wear resistance and rigidity under heavy rolling pressure, drastically extending service cycles and lowering roll‑swap downtime.

Monolithic Integrated Shaft‑Journal Construction: Unlike shrink‑fitted carbide roll‑ring assemblies, our one‑piece solid carbide body with pre‑machined shaft journals removes risks of clearance loosening or slippage. No secondary hot assembly required; the roll is ready‑to‑install after delivery to your rolling mill stand.

Precision‑Ground Concentricity for Stable Gauge Control (≤0.02 mm TIR): Minor runout or vibration inside the rolling mill creates thickness fluctuation, wavy edges and uneven strip surfaces. Our mill rolls are finished on high‑precision CNC cylindrical grinders, locking total radial TIR runout ≤0.02 mm. Combined with ISO 1940 G2.5 dynamic balancing, it suppresses rotational vibration and maintains uniform thickness across the full strip width.

Multi‑Stage Super‑Finishing for Controlled Surface Quality: Our sequential grinding and polishing workflow delivers two selectable surface grades. Standard Ra0.4‑0.8 μm finish fits general precision rolling tasks; the optional mirror‑polished Ra ≤0.02‑0.04 μm surface eliminates micro‑scratches, perfectly suited for high‑end electronic‑grade flat‑wire and ultra‑thin strip output. All rolls can be fully customized according to mill parameters, rolling force and workpiece material.

Q1. Are you a trader or direct factory?

We are a direct manufacturing factory with over 20 years of expertise in high-end industrial rollers, casters and material handling solutions. Our facility operates with ISO-certified quality management systems, allowing us to maintain full control over production cycles and quality standards. Throughout two decades of growth, we have established deep, long-term strategic partnerships with several listed companies and global automation leaders, proving our reliability as a high-tier industrial supplier.

Q2. What are your main products?

AstraRoll specializes in the engineering and production of three core product lines: Industrial Rollers, Heavy-Duty Wheels, and Precision Casters. We do not just sell components; we provide integrated movement and transport solutions. Our products are widely utilized across high-demand sectors, including: New Energy, Lithium Battery, Mining, Heavy Industry, Medical Institutional, Agriculture and Logistics.

Q3. What about delivery time?

We deeply understand that project timelines are critical.
Standard Products: Usually dispatched within 7–15 working days if the components are in stock.
Customized/OEM Orders: Depending on the complexity and volume, the lead time typically ranges from 20–35 days. This includes time for technical drawing confirmation, specialized tooling, and rigorous pre-shipment testing.
Shipping Methods: We offer flexible global logistics solutions, including FOB and CIF terms. We ship via Sea Freight (for bulk industrial orders), Air Freight (for urgent project needs), and International Express (DHL/FedEx/TNT) for smaller components or samples.

Q4. How can I get a quote for customized products?

Since a significant portion of our business involves specialized engineering, pricing is tailored to your specific technical requirements. To provide an accurate quote, please provide the following details: Technical Drawings or Sketches, Application Environment, Quantity, Special Requests. Our engineering team typically reviews and responds to custom inquiries with a formal quotation within 24–48 hours.

Q5. What is your payment?

TT / Paypal / Western Union / LC / Credit Card etc. are all available to us.