1. Product Overview
The Double-Head Tank Polishing Machine is designed for the efficient surface finishing of
large-diameter tanks, with a processing range of φ500–5000mm
(optional extension to 6000mm). It integrates a high-torque 5.5kW polishing head,
dual-axis frequency-controlled system, and a heavy-duty rotary tank roller.
Suitable for chemical containers, food-grade tanks, LNG vessels, and shipbuilding equipment,
the system supports rapid tool switching and delivers mirror-grade finishes with
Ra ≤ 0.4μm. Its modular design ensures low power consumption, reduced maintenance,
and adaptability to various production environments.
2. Key Product Features
- Exceptional Processing Range
Handles workpieces from φ500mm to φ5000mm, one of the widest ranges in the industry.
Optional beam extension supports tanks up to 6 meters long. - High-Torque Polishing Head
5.5kW 2-pole motor with 35N·m torque output. Maintains smooth operation even at
500rpm low-speed setting for steady grinding. - Smart Control Architecture
Dual inverter synchronization with <0.5% speed deviation, intelligent overload
protection (<0.1s response), and a user-friendly HMI interface. - Energy-Efficient Modular Design
Operates at just 8kW total power—40% lower than industry average.
Modular structure reduces maintenance time by 50%. - Flexible Model Options
Available in Basic, Advanced, and Custom configurations, supporting automation,
dust extraction, robotic integration, and ultra-heavy load upgrades.
3. Technical Specs & Polishing Matrix
▶ Technical Specifications
| Category | Specification |
|---|---|
| Working Range | φ500–5000mm (up to 6000mm optional) |
| Power System | 8kW total, 5.5kW 2-pole motor, torque: 35N·m |
| Control System | Dual-axis frequency inverter control (beam & roller) |
| Speed Range | Stepless 1–20rpm |
| Tool System | Quick switch: abrasive belt (1600×50mm), flap wheel, cloth wheel |
| Surface Finish | Ra ≤ 0.4μm; grit range 60–800 |
| Efficiency | 8㎡/hour (continuous mirror polishing) |
| Load Capacity | Standard: 2 tons; Upgradable to 20 tons |
▶ Process Capability Matrix
| Polishing Stage | Tool | Grit Range | Result Surface Roughness |
|---|---|---|---|
| Coarse Polishing | Abrasive Belt | 60–120 | Ra 1.6–3.2μm |
| Semi-Finishing | Flap Wheel | 180–400 | Ra 0.8–1.6μm |
| Fine Finishing | Cloth Wheel | 600–800 | Ra ≤ 0.4μm (Mirror) |
4. Verified Industrial Applications
- Chemical Containers: 50m³ reaction tank exterior polishing
- Food-Grade Tanks: φ4800mm stainless tank interior weld treatment
- Marine Industry: Ballast tank and storage tank polishing
- Energy & LNG Sector: Precision weld finishing for LNG storage tanks
