Q&A：可以用力矩扳手来拧松紧固件吗？B737系列机务在线

ryn_82 发表于 2024-4-10 14:24:13

Q&A：可以用力矩扳手来拧松紧固件吗？

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                        <span style="color: #000000;white-space-collapse: preserve;">正常情况下，我们都是用力矩扳手来磅紧的，通常都禁止使用力矩扳手。
                        <mpchecktext contenteditable="false" id="1712727512712_0.8296068467518118"></mpchecktext>但是在某些时候，拧松力矩也有要求时，该怎么办呢？
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                        <span style="color: #000000;white-space-collapse: preserve;">本次回答的问题是：
                        <mpchecktext contenteditable="false" id="1712727512713_0.41742524370767464"></mpchecktext></span>              <strong><span style="white-space-collapse: preserve;color: #D92142;">可以用力矩扳手来拧松紧固件吗？
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         <span style="font-size: 15px;color: #D92142;">▲</span>      <span style="font-size: 15px;">力矩扳手
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<span style="font-size: 15px;">我们经常会被告知，严禁用力矩扳手来拧松紧固件。
<mpchecktext contenteditable="false" id="1712727512716_0.5638489236067643"></mpchecktext>在基础执照教材中的力矩扳手使用注意事项中也特别提醒：
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 <span style="font-size: 15px;letter-spacing: 2px;text-align: justify;color: #D92142;">▲</span>  <span style="font-size: 15px;letter-spacing: 2px;text-align: justify;">「力矩扳手只能用来磅紧，一般不能用来拧松紧固件」
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<span style="font-size: 15px;">但是在某些时候，对拧松力矩也有要求，比如最典型的就是发动机HPC孔探时，S7-S9这种双层堵头，拆卸的力矩手册要求不能超过280磅寸，否则很容易就将堵头拧断了：
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   <span style="font-size: 15px;letter-spacing: 2px;text-align: justify;color: #D92142;">▲</span>  <span style="font-size: 15px;letter-spacing: 2px;text-align: justify;">实际发生过多次不按手册导致堵头断裂事件
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<span style="font-size: 15px;">在这种情况下就必须使用力矩扳手来拧松了。
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<span style="font-size: 15px;">咨询过力矩扳手厂家，回复如下：
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                        <strong>Can We Loosen Bolts with a Torque Wrench？
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               <strong><span style="color: #D92142;">A torque wrench can be used to loosen a bolt, but you run the risk of damaging the torque.</span></strong>          <span style="color: #D92142;"> </span>It is calibrated to tighten, and it is possible the bolt is tightened outside the range of your torque wrench.
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<span style="color: #D92142;"><strong><span style="font-size: 15px;">其实在力矩扳手的量程范围内，用力矩扳手拧松和拧紧都是没有问题的，不会对力矩扳手造成损伤。
<mpchecktext contenteditable="false" id="1712727512726_0.3273358233166932"></mpchecktext></span></strong></span>  <span style="font-size: 15px;"><br/></span>
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<span style="font-size: 15px;">不让用力矩扳手来拧松紧固件，是因为怕拧松紧固件的力矩超过了力矩扳手的最大量程范围，从而造成力矩扳手损坏。
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白镜发表于 2024-4-13 21:45:54

好！

liulai34 发表于 2024-4-13 22:20:20

就是怕你把工具用坏了

隐形的翅膀 发表于 2024-4-18 20:20:45

如果松，是用表盘式力矩扳手吧

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Q&A：可以用力矩扳手来拧松紧固件吗？