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New energy vehicle gears are key components in the transmission system of new energy vehicles, mainly responsible for transmitting the power generated by the motor to the wheels to achieve vehicle driving. The commonly used materials for gears in new energy vehicles mainly include:
Special alloy steel:
Low carbon alloy steel, such as 20CrMnTi, 20CrMo, etc., has good comprehensive mechanical properties, including high strength, high toughness, and good wear resistance.
High carbon alloy steel: such as 20CrMoH, 20CrMoV, etc., has high hardness and wear resistance, suitable for heavy-duty and high-strength gears.
Powder metallurgy materials:
Powder metallurgy technology can produce high-precision and high-performance gears, especially suitable for miniaturization and lightweight design.
Non metallic materials:
Plastic gears, such as nylon (PA), polyoxymethylene (POM), polyetheretherketone (PEEK), etc., have the advantages of self-lubricating, lightweight, and low noise, but their strength and heat resistance are relatively low.
Composite materials, such as carbon fiber reinforced plastic (CFRP), glass fiber reinforced plastic (GFRP), etc., have advantages such as high strength and lightweight.
Surface treatment materials:
In order to improve the wear resistance and corrosion resistance of gears, special treatments such as carburizing, nitriding, chrome plating, etc. are often carried out on the surface of gears.
Special alloy:
Lightweight alloys such as titanium alloy and aluminum alloy are used for gears with special requirements, such as those that require weight reduction.
When selecting gear materials, factors such as working conditions, usage environment, and cost of the gear need to be considered. For high-performance new energy vehicle gears, alloy steel or special alloys with high strength, high wear resistance, and low weight are usually selected. For applications that require high lightweighting, plastic gears or composite materials may be chosen. Surface treatment can further improve the performance of gears and extend their service life.
