Forged Link Duplex Chain
Hangzhou Ocean Industry Co., Ltd. is one of the most experienced manufacturers and suppliers of forged link duplex chain in China. Welcome to wholesale customized forged link duplex chain at competitive price from our factory. Good service and quality products are available.
Forged Link Duplex Chain for Automated Painting Lines
In the landscape of modern industrial finishing, the transition from manual coating to high-speed automated systems necessitates a structural backbone that can handle synchronized complexity. Our Forged link duplex Chain represents a significant evolution in conveyor technology, specifically developed to solve the instability issues inherent in traditional single-link systems used within a high-output painting line. By utilizing a dual-track architecture, this chain distributes gravitational loads and kinetic tension across two balanced forged paths, virtually eliminating the "snaking" effect that causes vibration during the delicate spraying process.
Forged from high-density chromium-molybdenum alloy steel, each component undergoes a rigorous multi-stage thermal refinement process to achieve a high strength-to-weight ratio. This ensures that the conveyor chain remains lightweight enough to reduce motor power consumption while maintaining the ultimate tensile strength required for continuous 24/7 operations. Unlike standard cast or stamped alternatives, our duplex links feature a continuous grain flow pattern, providing exceptional resistance to fatigue and stress-corrosion cracking. This makes it the premier choice for Tier-1 automotive suppliers and large-scale appliance manufacturers looking to minimize downtime and maximize finishing quality.
| Chain No. | P | T | C | S | Z | G | D | Breaking loads | Weight |
| mm | mm | mm | mm | mm | mm | mm | mm | kN/lbf | Kg/m |
| 142NA | 142 | 42 | 50 | 19 | 70 | 13 | 25 | 320-550 | 11.8 |
| 142HA | 142 | 60 | 50 | 28 | 87 | 13 | 25 | 470-790 | 16.7 |
| 160NA | 160 | 50 | 53 | 23 | 82 | 13 | 25 | 410-670 | 13 |
| 200NA | 200 | 60 | 50 | 25 | 81 | 12 | 25 | 410-670 | 13 |
| 200HA | 200 | 70 | 60 | 30 | 95 | 13 | 30 | 580-955 | 19.3 |
| 250NA | 250 | 60 | 50 | 25 | 81 | 12 | 25 | 410-670 | 12 |
| 250HA | 250 | 70 | 60 | 30 | 95 | 13 | 30 | 580-955 | 17.7 |
Engineering Selection & Selection Strategy
When specifying a Forged link duplex Chain for your facility, the primary consideration should be the "Chordal Action" relative to your track radius. Because the duplex structure provides increased lateral stiffness, it requires precisely calculated clearances for horizontal curves. We recommend a pitch-to-radius ratio that ensures smooth articulation without increasing frictional drag. For systems involving multi-stage pre-treatment, we offer specialized metallurgical variants that resist hydrogen embrittlement caused by acidic vapors.
Environment & Operational Thresholds
Thermal Tolerance: Optimized for stability between -20°C and +260°C. For extreme-heat drying ovens (exceeding 300°C), custom expansion-tolerant pins are available.
Loading Capacity: Designed with a 10:1 safety factor. For peak-load scenarios in heavy machinery painting, the dual-link design provides a redundant safety path.
Velocity Range: Highly efficient at standard speeds of 1m/min to 12m/min, maintaining pitch precision within 0.05mm over 100 meters of travel.
Core Technical Advantages
Dual-Path Synchronization:
The duplex linkage ensures that load weight is shared equally, preventing one-sided wear on track rollers and guides.
Vacuum Heat-Treated Pins:
Link pins are vacuum-carburized to provide a glass-hard surface for wear resistance while retaining a ductile core for shock absorption.
Zero-Tool Assembly:
The rivetless design allows for manual installation and segment replacement without the need for heavy machinery or specialized tools.
High-Density Drop Forging:
Precision forging dies eliminate internal porosity, resulting in a 30% higher tensile modulus than typical cast conveyor components.
Technical Specification Matrix
| Feature | Professional Specification |
|---|---|
| Material Grade | AISI 4140 / 42CrMo Steel |
| Pitch Increments | 100mm, 150mm, 200mm (Standard) |
| Tensile Limit | 160kN to 500kN (Series Dependent) |
| Surface Treatment | Phosphate / Zinc-Flake / Oil-Dipped |
| Hardness Depth | 0.8mm - 1.2mm Induction Depth |
| Compatible Track | Standard I-Beam or Enclosed Track Systems |
Working Principle
The Forged link duplex Chain operates on a parallel-linkage mechanism. As the drive sprocket engages the chain, the dual-plate geometry creates a wide "stance" within the conveyor track. This wider center of gravity prevents the hanging load from inducing a twisting moment on the chain links. The duplex plates act as a self-aligning guide, ensuring that the chain remains centered in the track even when navigating steep vertical rises or complex 3D loops in a multi-level painting facility.
Installation & Maintenance Protocol
Alignment Verification: Ensure that the drive sprockets are perfectly aligned to the track centerline to prevent uneven tension on the duplex links.
Tensioning: Utilize a weighted or spring-loaded take-up unit. Over-tensioning can lead to premature wear of the forged bearing surfaces.
Lubrication: In painting environments, use only "paint-compatible" dry lubricants or high-temp graphite to avoid contaminating the workpiece surface.
FAQ
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