With the continuous advancement of our automotive industry, the use of various mechanical products in our daily lives has become increasingly important. Universal joints are a crucial automotive component; only when they function properly can our automotive transportation operations better serve us. Below, we will provide a detailed introduction.
Universal joints are circular, movable or rolling components that connect or assemble various parts. They are made of lightweight alloy steel tubing with excellent torsional resistance. The shaft of the gearbox, which transmits power to the main reducer, has relatively low strength and hardness. It has poor weldability compared to high-carbon steel, exhibiting high hardness and good cold-stamping processability. However, it has poor fatigue strength, and with appropriate heat treatment, it can also be manufactured into highly wear-resistant parts. Its main function is to support rotating bodies and transmit power. It will withstand alternating torque and tensile/compressive loads, with the journals and key areas experiencing significant friction and wear. The main failure modes are cracking and partial excessive wear, with cracking including fatigue cracking and overload cracking. It can achieve good comprehensive mechanical properties, resulting in parts with core toughness and wear-resistant surfaces. However, it has low mechanical properties and is only suitable for smaller, lighter-loaded parts. Alloy-modified steels can improve hardenability, significantly enhancing the hardening effect of heat treatments such as quenching without reducing core toughness. It possesses very good comprehensive mechanical properties.
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