扭矩在3.5毫米连接器上用于一次性连接，扭矩扳手出现弯曲

事实上，我没有确切的数字，但我认为它是10或12英寸 - 磅。
用于校准标准的扭矩扳手设计用于在施加和移除它们时将它们扭转到精确但不太高的值。
扭矩实际上压缩了外导体（虽然它是固体金属）很小的量，因此要保持开启和短路的非常恒定的相位，并且需要精确的扭矩。
但是，它对于仪器内部可靠的长期连接来说太低了。
此外，在很长一段时间内，连接器将“冷焊”，有时它们需要非常大的扭矩来松脱。



     以下为原文

  Indeed, I don't have the exact number but I think it is either 10 or 12 inch-pounds.  The torque wrench for calibration standards is designed to torque them to an exact, but not too high, value, as they are applied and removed.  The torque actually compresses the outer conductor (though it is solid metal) a tiny amount, so to keep very constant phase for opens and shorts, and exact torque is needed.  But, it is too low for reliable long term connections inside the instruments. Further, over a long time, connectors will "cold-weld" and sometimes they take very large torques to break loose.

> {quote：title = Dr_joel写道：} {quote}>确实，我没有确切的数字，但我认为它是10或12英寸磅。
用于校准标准的扭矩扳手设计用于在施加和移除它们时将它们扭转到精确但不太高的值。
扭矩实际上压缩外导体（虽然它是实心金属）很小，因此要保持开启和短路的非常恒定的相位，并且需要精确的扭矩。
但是，它对于仪器内部可靠的长期连接来说太低了。
此外，在很长一段时间内，连接器将“冷焊”，有时它们需要非常大的扭矩来松脱。
干杯乔尔。
这解释了我所观察到的，虽然我甚至没有考虑过冷焊。
如果你碰巧发现它是10英寸还是12磅英寸的一次性连接，我很想知道。
我只看到过任何地方提到的8磅英寸的数字，但更确切地说，如果只进行一次连接，使用额外的扭矩来帮助移动的设备的长期可靠性将是有益的。
周围。
DaveEdited：drkirkby于2015年11月1日下午8:32



     以下为原文

  > {quote:title=Dr_joel wrote:}{quote}
> Indeed, I don't have the exact number but I think it is either 10 or 12 inch-pounds.  The torque wrench for calibration standards is designed to torque them to an exact, but not too high, value, as they are applied and removed.  The torque actually compresses the outer conductor (though it is solid metal) a tiny amount, so to keep very constant phase for opens and shorts, and exact torque is needed.  But, it is too low for reliable long term connections inside the instruments. Further, over a long time, connectors will "cold-weld" and sometimes they take very large torques to break loose.

Cheers Joel. That explains what I'd observed, although I not even considered cold welding. 

If you do happen to discover whether its 10 or 12 lb inch for one-off connections, I would be interested to know. I've only ever seen the figure of 8 lb inch mentioned anywhere, but it does make more sense that if a connection is only to be done once, it would be beneficial to use extra torque to aid long term reliability of equipment that gets moved around. 

Dave

Edited by: drkirkby on Nov 1, 2015 8:32 PM