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五金家具螺絲會突然斷裂
- 2019-02-15 -

?    螺栓斷裂的原因:

    第一:螺栓質量

    第二:螺栓強度

    第三:螺栓的預緊力矩第四:螺栓的疲勞強度不合格,熱處理不合格,產品不合格合格,螺栓選擇不合理。


    使用環境不好,等等。在這些前提條件標準化的情況下,螺栓斷裂大部分由于松動而破裂。由于螺栓的松動與疲勞斷裂幾乎相同,最后我們總能找到疲勞強度的原因。事實上,疲勞強度太大,我們無法想象螺栓在使用過程中不會使用疲勞強度。螺紋緊固件損壞的原因是松動:在螺紋緊固件松動后,產生巨大的動能mv2。


    這種巨大的動能直接作用在緊固件和裝置上,導致五金家具螺絲損壞,五金套管損壞。無法在正常條件下工作,進一步導致設備損壞。承受軸向力的緊固件,螺紋斷裂,螺栓斷裂。對于承受徑向力的緊固件,螺栓被剪切并且螺栓孔被制成橢圓形。使用具有優異抗松效果的防螺紋防松方法是解決該問題的根本方法。螺紋緊固件的松動與螺栓的疲勞強度無關:在橫向振動試驗中,螺紋緊固件只能松動一百次,在疲勞強度試驗中需要反復振動一百萬次。換句話說,當使用其疲勞強度的萬分之一時,螺紋緊固件是松動的。我們只使用其大容量的萬分之一,因此螺紋緊固件的松動不是由于螺栓的疲勞強度。 。

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