Why do the fasteners of the photovoltaic bracket lock up

The various parts of the PHOTOVOLTAIC bracket are connected by fasteners to ensure the stability of the whole photovoltaic bracket.However,don't underestimate such a small fastener.If it is used improperly,there will be problems,causing troubles to the construction of photovoltaic bracket.One of the common fasteners is locked,resulting in the bolt and nut can not be separated.Can this problem be avoided?

Through the analysis of the reason why the fasteners on the photovoltaic bracket are locked,it is concluded that although the fasteners are mostly made of stainless steel,if the surface is damaged,a thin oxide layer will also be generated to prevent further corrosion.When the fastener is locked,the pressure and heat generated between the teeth will break down the oxide layer,causing it to stick until it is locked.

If the fastener can be operated correctly,this problem may be prevented.The fastener surface should be as smooth as possible before use,and the fastener should be waxed.When using,the axis perpendicular to the thread should be rotated.Do not tilt;Moreover,the application of force should be uniform,and the tightening torque should not exceed the torque;At the same time,the speed force should be appropriate.

In addition,do not use fasteners at high temperatures,or use washers to prevent fasteners from locking too tight is one of the preferred ways.