Mold Springs: Gas vs Mechanical vs Nitrogen

Gas: Constant force, 1-2M cycles
Mechanical: Increasing force, 300-500K
Nitrogen: High force, 3-5M cycles

Choose based on stroke, force, budget.

📎 延伸阅读
• 回针（Return Pin）
• 锥形精定位（Taper Lock）
• 顶针（Ejector Pin）注塑模具用