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Some designs use adjustable screws to control the preload, allowing users to fine-tune it according to their usage habits.

This structural change makes it easier for cracks to initiate and propagate at grain boundaries when zinc alloys are subjected to external forces, ultimately leading to a significant reduction in toughness.

Zinc alloy, due to its excellent casting properties, strength, and lightweight properties, has become a mainstream material for high-end belt buckles.

Compared to traditional copper, iron, or stainless steel, zinc alloy belt buckles offer significant advantages in terms of lightweight, structural design flexibility, and surface treatment adaptability, thereby comprehensively improving wearing comfort.

If users open and close zinc alloy belt buckles violently for a long time, the elastic structure will be subjected to impact stress exceeding the design load, which will accelerate crack initiation.

The pre-chamfer design of the mold during the die-casting stage is the key to reducing subsequent processing pressure and ensuring chamfer consistency.