Yield Strength and Connection Performance of Double-Head Knurled Hub Bolts

In the field of mechanical engineering and automobile manufacturing, bolts are an important connector, and the stability and reliability of their performance are directly related to the safety of the entire system. Among the many bolt performance indicators, yield strength is particularly critical. It directly determines whether the bolt is prone to plastic deformation when subjected to external force, thereby affecting its connection performance. Especially for double-head knurled hub bolts, the yield strength is directly related to the stability of the connection between the wheel and the vehicle.

1. Definition of yield strength

Yield strength refers to the stress value at which the bolt begins to produce plastic deformation when subjected to external force. Simply put, it is the critical point at which the bolt enters the plastic deformation stage from the elastic deformation stage when the external force reaches a certain degree. Before this critical point, the deformation of the bolt is reversible; once it exceeds this critical point, the deformation of the bolt will become irreversible plastic deformation.

2. The importance of yield strength to double-head knurled hub bolts

For double-head knurled hub bolts, the yield strength is directly related to whether it is prone to plastic deformation when subjected to external force. If the yield strength is too low, the bolt may undergo plastic deformation when subjected to a small external force, resulting in loose connection or failure. On the contrary, if the yield strength is high, the bolt can withstand greater external force without plastic deformation, thereby ensuring the stability and safety of the connection.

3. Relationship between yield strength and connection performance

Connection performance is one of the important indicators for evaluating the performance of bolts. It reflects the size of the external force that the bolt can withstand during the connection process, the stability of the connection, and the reliability after the connection. As one of the key factors affecting the connection performance, the yield strength directly determines the performance of the bolt during the connection process.

Specifically, when the yield strength of the double-headed knurled hub bolt is high, it can withstand greater external force without plastic deformation, thereby ensuring the stability of the connection between the wheel and the vehicle. Even under harsh driving conditions, such as high-speed driving, sudden braking, bumpy roads, etc., the bolt can maintain a stable connection state to ensure driving safety.

However, if the yield strength of the double head knurled hub bolt is too low, it may undergo plastic deformation when subjected to a small external force, resulting in loose connection or failure. This will not only reduce the stability of the connection between the wheel and the vehicle, but also increase driving risks and may even cause safety accidents.