High-Performance Sink Roll / Pot Roll for Continuous Hot-Dip Galvanizing Line (CGL)

Huatao Group Sink Rolls are critical components engineered specifically for Continuous Hot-Dip Galvanizing Lines (CGL) and Continuous Galvanume Lines (CGL/CGL-AlZn). Operating deep inside the 450°C - 480°C molten zinc bath, our sink rolls are designed to withstand severe liquid metal corrosion, intense thermal fatigue, and heavy mechanical wear.

Utilizing advanced Centrifugal Casting technology and state-of-the-art HVOF (High-Velocity Oxygen-Fuel) Thermal Spray Cermet Coatings, our sink rolls ensure stable strip tension, prevent strip slippage, and minimize zinc dross pick-up, making them ideal for producing high-end automotive exposed panels and premium appliance steel.

Key Features & Advantages of Sink Roll / Pot Roll

Superior Corrosion & Erosion Resistance: Cast from premium ultra-low carbon, high-Cr-Ni heat-resistant alloys (such as 316L, 317L, or proprietary superalloys) to prevent iron-zinc reactions and liquid zinc penetration.

Advanced HVOF Cermet Coating: Coated with high-density WC-Co-Cr (Tungsten Carbide) or Mo-B (Molybdenum Boride) ceramic matrix, achieving a surface hardness over HV1000 for maximum wear resistance and anti-dross performance.

Optimized Groove Design: Features precision-machined spiral grooves or chevron (herringbone) grooves to effectively discharge zinc dross and prevent strip marking or scratching.

Excellent Dynamic Stability: 100% dynamically balanced at operational speeds to eliminate vibration, ensure smooth strip tracking, and prolong the lifespan of stable rolls and bearings.

Extended Service Life: Engineered to withstand harsh environments, offering a longer campaign life in the zinc pot, which reduces line downtime and lowers maintenance costs.

Application of Sink Roll / Pot Roll

Our sink rolls are widely utilized in modern metallurgical steel plants worldwide, supporting lines that produce:

Automotive exposed and unexposed sheets (GI/GA)

High-end home appliance color-coated base sheets

Structural building corrugated sheets and galvanized coils

Specifications of Sink Roll

Global Engineering Support

Huatao Group provide fully customized sink rolls according to your specific blueprints, line speeds, and steel grades. Contact our engineering team today with your drawings for a detailed technical proposal and competitive quotation!