High-Quality Forged Gear Blanks – 20CrMnTi, 18CrNiMo7-6, 42CrMo
Alloy Steel
We specialize in manufacturing premium forged gear blanks using top-grade materials such as 20CrMnTi, 18CrNiMo7-6, and 42CrMo. These alloy steels offer excellent mechanical strength, wear resistance, and hardenability, making them ideal for heavy-duty applications in wind turbines, industrial gearboxes, construction machinery, and
marine equipment. All forgings are produced through
precision-controlled processes to ensure optimal grain flow, uniform hardness, and dimensional accuracy. Available in customized sizes and heat treatment conditions, our metal forgings meet international standards and are inspected with ultrasonic
testing to guarantee quality. Partner with us for reliable forged components that power performance and durability.
| Item | Details |
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| Product Name | 20CrMnTi Wear-Resistant Forged Gear for Railway Traction Gearbox
Units | | Material Grades | - 20CrMnTi alloy steel optimized for surface hardness and core
ductility - Custom compositions available for high-speed,
heavy-load traction applications | | Forging Equipment | - Hydraulic Hammers: 5T, 8T, 12T - Supports open die forging of
medium to large railway gear blanks | | Manufacturing Process | Forging → Heat Treatment → Rough Machining → Gear Hobbing/Shaping →
Gear Grinding (if needed) → Final Machining → Dimensional &
Non-Destructive Inspection | | Forging Ratio | ≥ 3.0 — Ensures directional grain flow, structural integrity, and
resistance to dynamic fatigue stresses | | Heat Treatment Options | - Carburizing + Quenching + Tempering for hardened tooth surface
and tough gear core - Induction hardening available for selective
reinforcement | | Applications | - Drive gears in railway traction gearboxes - Power transmission
gears for locomotives, EMUs, metros, and urban rail - Ideal for
traction systems requiring frequent acceleration, high torque, and
low noise | | Process Compliance | Produced in accordance with customer engineering specifications and
performance requirements | | Delivery Conditions | - Heat treated and delivered as rough-machined or fully finished
gears - Optional surface hardening tailored to traction load
profiles | | Testing & Inspection | - Chemical Analysis - Mechanical Properties: Tensile Strength,
Impact, Hardness - Non-Destructive Testing: UT, MT |
Product Features High Surface Hardness
Through precision carburizing and quenching, the gear achieves a
surface hardness of HRC58–62, ensuring excellent wear resistance
under continuous high-load operation. Superior Core Toughness
20CrMnTi alloy steel provides a strong, ductile core, enhancing
shock absorption and crack resistance during frequent acceleration
and braking cycles. Optimized Tooth Geometry
Advanced hobbing and finishing techniques ensure low noise, high
contact precision, and smooth torque transmission. Long Service Life
Engineered to resist surface pitting, scuffing, and tooth root
fatigue, significantly extending maintenance intervals and lowering
life-cycle costs. Consistent Dimensional Stability
Thermal and mechanical treatment ensures tight tolerances are
maintained, critical for gearbox reliability at high speeds.
Application Scenarios Railway Traction Gearboxes
Used in drive systems of electric and diesel locomotives,
high-speed trains, metro cars, and light rail vehicles. High-Load Transmission Units
Suitable for main traction gears, intermediate transmission stages,
and reduction gears in railway powertrains. Urban Mass Transit & Intercity Rail
Reliable under frequent start-stop conditions and high cycling
demand typical in city and regional transport systems. Heavy-Duty Mobility Systems
Ideal for axle-mounted gearboxes and gear-coupled wheel drives
requiring durability, precision, and low maintenance.
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