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Engineered for extreme durability and corrosion resistance, our SR Rollers with Zinc-Plated Steel Surface are the go-to choice for industrial applications where harsh conditions are the norm. These rollers feature a solid steel core with a high-quality zinc plating that provides a robust protective layer against rust, chemicals, and mechanical wear. The zinc plating process, which can be either electroplating or hot-dip galvanizing depending on application requirements, ensures uniform coverage and superior adhesion, making these rollers suitable for outdoor use, wet environments, and heavy-load scenarios.
The combination of a strong steel core and zinc-plated surface creates a roller that can withstand high compressive forces while maintaining excellent dimensional stability. Unlike uncoated steel rollers, which are prone to rust and degradation, our zinc-plated rollers offer extended service life with minimal maintenance, making them a cost-effective solution for industries ranging from construction to maritime logistics.
The zinc plating acts as a sacrificial layer, protecting the underlying steel core even when the surface is scratched or exposed to moisture. Hot-dip galvanized rollers, in particular, offer a thicker zinc layer (typically 85-120 microns), providing up to 50% longer corrosion resistance compared to electroplated options (20-30 microns), ideal for coastal or highly corrosive environments.
The steel core provides excellent load-bearing capacity, with a tensile strength of up to 600 MPa. This allows the rollers to handle heavy loads exceeding 500 kg per linear meter, making them suitable for conveying raw materials, machinery parts, and other bulky items in industrial settings.
Zinc-plated steel surfaces maintain their integrity in temperature ranges from -40°C to +200°C, resisting thermal expansion and contraction that could affect roller performance. Additionally, the hard zinc layer absorbs impacts and shocks, reducing the risk of deformation even in high-vibration environments.
Each roller undergoes precise machining to ensure concentricity and smooth rotation, with a surface roughness of Ra ≤ 1.6μm. This precision minimizes noise and vibration, critical for applications where operational stability is essential, such as in automated production lines.
In addition to standard zinc plating, we offer optional post-treatment processes like passivation or powder coating to further enhance corrosion resistance or achieve specific aesthetic requirements. These finishes can be tailored to meet industry standards such as ISO 1461 for hot-dip galvanizing.
In construction sites, our zinc-plated rollers are used in conveyor systems for transporting aggregates, cement, and steel beams. The harsh outdoor conditions, with exposure to rain, dirt, and abrasive materials, are no match for the rollers' corrosion-resistant surface. In mining operations, they handle heavy ore transportation, where moisture and chemical-laden dust would quickly degrade uncoated steel components.
Ports and shipyards expose equipment to saltwater spray and high humidity, environments notorious for causing corrosion. Our rollers are integral to cargo handling systems, conveyor belts in container terminals, and shipboard material transport, ensuring reliable operation even in the most corrosive marine atmospheres.
Assembly lines for heavy machinery, such as agricultural equipment or construction vehicles, rely on these rollers to move large metal components. The high load capacity and impact resistance of zinc-plated steel surfaces ensure smooth material flow without damage to either the roller or the conveyed parts.
In wastewater treatment plants, where rollers are exposed to chemicals, sludge, and constant moisture, our zinc-plated solution offers long-lasting performance. They are used in sludge conveyors, screening machines, and sedimentation tank systems, resisting corrosion from aggressive wastewater components.
Warehouses with outdoor storage areas and open-air conveyor systems benefit from these rollers' ability to withstand prolonged exposure to sunlight, rain, and temperature fluctuations. They ensure consistent performance in logistics hubs, where downtime due to roller failure can lead to significant operational delays.
Q: What is the difference between electroplated and hot-dip galvanized zinc coatings?
A: Electroplating provides a thinner, more aesthetically uniform coating suitable for moderate corrosion environments, while hot-dip galvanizing offers a thicker, more rugged coating ideal for severe conditions. The choice depends on your application's corrosion risk and load requirements.
Q: Can zinc-plated rollers be used in food processing?
A: While zinc is generally non-toxic, direct contact with food products is not recommended due to potential galvanic corrosion if in contact with certain acids. For food-grade applications, we recommend additional food-safe coatings over the zinc layer.
Q: How do I prevent galvanic corrosion when using these rollers with aluminum components?
A: To avoid galvanic corrosion, ensure proper insulation between zinc-plated steel and aluminum parts using non-conductive spacers or coatings. Regularly inspect for moisture accumulation in contact areas.
Q: What is the expected service life in a coastal environment?
A: Hot-dip galvanized rollers can last 15-20 years in coastal areas with proper maintenance, while electroplated rollers may require replacement after 5-8 years in the same conditions.
Q: Can these rollers be painted for additional protection?
A: Yes, a primer coat can be applied to the zinc-plated surface to improve paint adhesion, allowing for custom color finishes or additional protective layers in highly specialized applications.
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