Worksite Dumper Solid PU Wheel Line in Russia

Illustration notice. Process illustrations are not verified photographs of this installation.

Project reference basis. Figures and configuration details are reported in the supplied project brief. They are reference values for the stated application, rather than verified acceptance results or a guarantee for another installation. Confirm the source records, material, tooling, operating schedule and test method when assessing a comparable project.

Haifeng successfully engineered and commissioned a heavy-duty polyurethane wheel casting line for a leading construction transport and mini-dumper manufacturer in Russia, delivering 4 times the tread wear life of solid rubber while eliminating flat-tire downtime on demolition worksites. The turnkey delivery encompassed a high-output dual-component dosing machine, heavy hydraulic multi-segment mold clamping stations, dynamic oil temperature conditioning skids, and automated hub preheating equipment.

Prior to commissioning, contractors operating the customer's site dumpers on urban demolition projects suffered constant puncture failures. Jagged scrap rebar, concrete chunks, and metal debris punctured pneumatic tires daily, causing hazardous loaded vehicle stoppages and expensive tire replacement costs. The client required an industrial manufacturing system capable of molding ultra-durable solid elastomeric polyurethane tires directly onto heavy steel hubs, delivering high cut and tear resistance while maintaining full mechanical impact absorption across sub-zero Russian winters (-30°C).

Operating since August 2020 on a two-shift daily schedule across a 360 m² workshop, the workcell delivers consistent component repeatability. By implementing Haifeng's closed-loop Ratio Lock flow algorithms and dynamic mold thermal balancing, the client reliably manufactures indestructible, puncture-proof site dumper wheels that keep construction fleets operating without interruption.

Project Technical Specification Matrix:

Haifeng deployed an industrial reaction injection tire platform engineered for extreme cut-resistant elastomeric formulations:

1. Grit-Blasting & Induction Preheating: Heavy welded steel rims are blasted to Sa 2.5 and heated to 70°C, ensuring complete interfacial chemical crosslinking with the polyurethane tread.
2. High-Pressure Precision Dosing: Heavy-duty axial displacement pumps meter formulated precursors at 170 bar with ±0.5% precision, injecting a 15kg tire cavity in 3.5 seconds.
3. Radial Multi-Segment Hydraulic Clamping: Hydraulic presses close precision 4-segment tooling firmly, creating deep directional chevron tread blocks without flash lines.
4. Dynamic Oil Temperature Balancing: Multi-zone TCU skids circulate heated oil through the mold jackets at 65°C (±0.8°C), ensuring complete, uniform cure across the thick elastomeric body.

Installation and commissioning: 21 days. Operator training: 4 days. Warranty: 1 year. Long-term spare parts and remote PLC diagnostic support are available.