Applications of GB 3077 42SiMn Steel
Transmission Components
Gears and Shafts: Manufactured under high-frequency quenching and medium-temperature tempering conditions, these components are suitable for medium-speed and medium-load gear parts (e.g., gearbox gears, main shafts), featuring high surface hardness and strong wear resistance.
Alternative Materials: Fully substitutes 40cr steel and partially replaces 40CrNi steel, ideal for high-load components such as hydraulic pump rotors and sliding blocks.
Wear-Resistant Parts
Agricultural Machinery: Components like plow beams and hoe shank handles achieve high wear resistance through surface quenching, extending service life.
Industrial Equipment: Crusher liners and excavator support wheels, subjected to quenching and tempering followed by high-frequency quenching and low-temperature tempering, meet the high hardness requirements for large cross-section parts.
Steam Turbines and Energy Equipment
Main Shafts and Fasteners: Steam turbine main shafts with an operating temperature ≤400℃ and diameter ≤250mm leverage its high strength and fatigue resistance.
Impellers and Bearings: Suitable for manufacturing impellers and fasteners with a thickness ≤170mm, meeting stringent material performance demands in the steam turbine manufacturing industry.
Wind Power and Shield Tunneling Machines
Wind Turbine Bearings: A 25% increase in contact stress enables adaptation to extreme operating conditions, reducing maintenance frequency.
Shield Machine Drive Components: Surface strengthening technologies fulfill high-load and high-wear requirements, enhancing equipment reliability.
Thin-Walled Seamless Steel Tubes
Structural Balance: The medium carbon content and alloy composition achieve a balance of strength and toughness in thin-walled structures.
Engineering Applications: Ideal for manufacturing thin-walled seamless steel tubes, meeting dual demands for lightweight design and performance in specific engineering projects.
