Transmission Gear

Powder metallurgy transmission gears fundamentally transform conventional manufacturing methods. Traditional gears typically utilise high-strength alloy steel bars (such as 40Cr or martensitic stainless steel), undergoing complex processes including turning, broaching, heat treatment, and grinding. This approach not only incurs significant material wastage but also struggles to achieve optimal microstructure and residual stress control in thin-walled gear rings. We employ specialised iron-based alloy powders (such as customised Fe-Ni-Mo-Ti systems) to directly press near-net-shape transmission gear blanks using precision dies.

Product Parameter (Specification)

Product Feature And Application

Core Advantages of Powder Metallurgy Gears in Actuator Valve Transmission Systems

（1）Near-net-shape forming and cost-effectiveness: Complex geometries (such as double-helical gears and gears with bosses) are formed in a single operation, achieving material utilisation exceeding 95%. Compared to forging followed by machining, this reduces costs by 30–50%, making it particularly suitable for high-volume production.

（2）Superior Material Properties and Consistency: Powder metallurgy materials exhibit uniform microstructure, free from segregation, with excellent isotropy. Through sinter hardening or subsequent heat treatment, an ideal combination of strength, hardness, and toughness is achieved, with minimal batch-to-batch variation in performance.

（3）High Design Integration: Features such as bushings, flanges, special-shaped holes, and oil grooves can be directly integrated onto the gear itself. This simplifies assembly, reduces component count, and enhances overall system rigidity and reliability.

Production Details