Mining Steel Sole plates
Overview
Mining steel sole plates are specifically designed for complex mining conditions, categorized into two main series: Continuous Type and Individual Type. Their core function is to provide stable support for mining hoisting rails. By accurately dispersing the dynamic/static loads of ore-handling equipment, they ensure the safe operation and long-term durability of mining hoisting systems (such as open-pit mine gantry cranes and underground hoists).
The two series are respectively adapted to “heavy-duty load” and “lightweight compact” scenarios in mining, balancing resistance to mineral dust corrosion, impact load resistance, and installation flexibility. They meet the full-process rail support needs of mines, from open-pit mining to underground sorting.
Continuous Steel Soleplates
Product Positioning & Core Value in Mining
Designed exclusively for heavy-duty lifting operations in open-pit mines, it is mainly applicable to scenarios including gantry crane rails at open-pit ore transfer stations, rail systems for mining heavy-duty loading/unloading equipment, and hoisting rails at large raw material yards in mines.
With its high-strength structure and impact-resistant design, it can withstand high-frequency, heavy-load ore-handling operations in mining (e.g., mining cranes with a single-axle load > 20t). Meanwhile, it reduces rail deformation caused by concentrated loads, extending the service life of mining hoisting equipment and rails.
Materials & Processes
- Base Material: Q355B high-strength carbon steel (thickness >20mm, superior to industry-default Q235), with tensile strength ≥510MPa and yield strength ≥355MPa. Resists impact loads from mining ore-handling cranes to prevent deformation.
- Anti-corrosion Process: “Welding + integrated hot-dip galvanizing + surface passivation” — weld rail clamp base to soleplate first, then hot-dip galvanize the assembly (zinc coating ≥85μm), and finish with passivation.
- Mining Advantages: Zinc coating isolates acidic mineral dust (e.g., sulfide dust) and rainwater; passivation layer enhances dust adhesion resistance, solving “corrosion + dust accumulation” in open-pits.
- Structural Reinforcement: Key stress areas (rail clamp fixing points, bolt holes) locally thickened to 25-30mm, preventing cracking from frequent crane start-stops.
Mining Customization Services
- Size Customization: Adjust length per open-pit crane gauge (e.g., 1.435m standard/1.6m wide gauges), max 12m (reduces seams/dust infiltration); adjust width/bolt spacing per mining rail model (e.g., 60kg/m rails).
- Function Customization: Add “surface fluorocarbon coating” for high-sulfur mines (coal/sulfide ore); use Q355ND steel (better low-temperature toughness) for frigid northern open-pits (prevents brittle cracking).
- Supporting Customization: Provides mining anti-corrosion rail clamps + hot-dip galvanized fixing bolts, forming an integrated “soleplate + connector” solution — reduces procurement links and compatibility risks.
| Core Function | Adaptation Value in Mining Scenarios |
|---|---|
| Heavy-load Distribution | Disperses the instantaneous impact loads generated when mining cranes handle ore, preventing rails and concrete foundations from cracking due to excessive local stress. It is adapted to the "heavy-load, high-frequency" operation characteristics of open-pit mines. |
| Precise Rail Alignment | Maintains long-term rail alignment through leveling design. Open-pit mine sites are prone to rail deviation due to mining-induced settlement; precise alignment reduces abnormal wear between crane wheels and rails, lowering maintenance frequency. |
| Resistance to Harsh Environmental Corrosion | Optimizes anti-corrosion processes for open-pit mine conditions such as rain exposure, mineral dust accumulation, and large day-night temperature differences, preventing steel soleplates from failing due to mineral dust corrosion and rainwater. |
Individual Steel Sole plates
Designed for underground mines and light-duty in-mine operations, it is mainly applicable to scenarios including rails for light-duty hoists in underground ore sorting workshops, rails for in-mine auxiliary material transportation (e.g., tracks for underground explosive transport trolleys), and rails for light-duty sorting equipment in mineral processing plants.
With its compact structure and lightweight design, it adapts to underground conditions such as “narrow space, high construction difficulty, and relatively light load”. While ensuring support stability, it reduces underground construction workload and equipment handling costs.
Materials & Processes:
Adapted to Underground Enclosed Humid Conditions
- Base Material: Q235NH weathering steel (8-15mm thick) with excellent humid corrosion resistance. Suits underground humidity >85% and corrosive gases in mineral dust (e.g., methane derivatives), reducing corrosion and extending equipment life.
- Anti-corrosion Process: Epoxy resin electrostatic spraying (coating ≥60μm) — resists mineral dust adhesion and weak acidic underground vapor; smooth surface eases cleaning, lowering dust accumulation workload.
- Structural Optimization: Countersunk bolt holes — prevent jolting from mining trolleys (e.g., underground tool carts) and block mineral dust entry.
Mining-specific Installation Design
| Comparison Dimension | Continuous Steel Soleplates | Individual Steel Soleplates |
|---|---|---|
| Mining Application Scenarios | Open-pit mine heavy-duty gantry cranes, ore transfer station rails, hoisting systems at large raw material yards | Underground light-duty hoists, rails in in-mine sorting workshops, underground auxiliary transport trolley rails |
| Applicable Mining Equipment Load | Heavy-duty mining cranes with a single-axle load > 20t | Light-duty mining equipment with a single-axle load < 10t |
| Material Specification | High-strength carbon steel plate of Q355B grade, thickness 20-30mm | Weathering steel of Q235NH grade / 316L stainless steel, thickness 8-15mm |
| Anti-Corrosion Capacity | Hot-dip galvanizing + passivation, resistant to open-pit mineral dust and rainwater corrosion | Epoxy resin spraying, resistant to underground humidity and weak acidic mineral dust corrosion |
| Installation Method | Bolt connection (main) + welding (shear resistance auxiliary), requiring leveling and calibration | Pure bolt connection, no welding needed, easy positioning |
| Core Advantages in Mining | Impact-resistant, heavy-duty durable, adapted to high-frequency heavy-load operations in open-pit mines | Compact and lightweight, safe to install, adapted to narrow underground spaces and hot work restrictions |
Mining Customization Services
FAQs
Q: How to select continuous or individual type?
A: Simple rule – For open-pit main production lines and applications with single-axle load ≥ 20 t, continuous support type is preferred; for underground/light-load applications or scenarios requiring welding-free installation, individual foundation type is selected. For more details, please upload working condition parameters, and we can provide an engineering proposal.
Q:How is the hot-dip galvanized layer thickness guaranteed? Is a test report provided?
A: Random inspections are conducted by batch before delivery, and a coating thickness test report is provided. Third-party testing can be arranged if necessary.
Q: Are explosion-proof rail clamps provided?
A: Yes, we can provide rail clamps that comply with mining explosion-proof standards (please specify the explosion-proof grade and applicable standards in your requirements).