Enhancing Piston Performance: The Benefits of Chamfered Edges in High-Temperature, High-Pressure Conditions

For engine pistons, under high-temperature explosive combustion conditions, pistons with chamfered edges on the head are generally at a lower risk of issues compared to those with sharp, non-chamfered edges. The specific reasons are as follows:

1. **Stress Concentration**: Chamfering can reduce the phenomenon of stress concentration at sharp edges. Sharp edges are more likely to experience stress concentration under high-temperature and high-pressure conditions, leading to cracks or fatigue fractures. Chamfering can smooth out stress distribution, reducing the risk of material failure.

2. **Thermal Expansion**: Sharp edges are more prone to deformation or even rupture during thermal expansion. Chamfering can make the edges smoother, reducing the stress concentration caused by thermal expansion, thereby improving the thermal stability of the piston.

3. **Durability**: Chamfering can reduce edge wear and improve the durability and lifespan of the piston. Under the high-temperature and high-pressure operating conditions of an engine, chamfering helps extend the life of the piston.

In summary, under high-temperature explosive combustion conditions, pistons with chamfered edges are at a lower risk of issues compared to those with sharp, non-chamfered edges.