JB/T7649.4-2008侧压弹簧片，具备弹簧紧压功能、弹簧控制功能、弹簧测量功能、弹簧带动功能、弹簧缓冲功能。弹簧片应用在冲击、振动或长期交变应力环境下，需具备高抗拉强度、弹性极限和高疲劳强度性能。弹簧片在最小刚度平面上容易弯曲，在另一个方向上具有大的拉伸刚度及弯曲刚度。弹簧片刚度在小变形范围是恒定的，弹簧片在载荷去除之后不出现永久变形。弹簧片硬度一般在HRC36～52之间。

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济南恒瑞金试验机有限公司；弹簧试验机制造商；山东省力值硬度计量委员

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