Monday, June 29, 2020

Vehicle tightness is related to driving experience

The reason why the car can effectively block the dirt and noise in the environment depends on the sealing and sound insulation of the whole car. Both the visible rubber strip on the outside of the vehicle and the invisible wiring harness seal ring play a decisive role in sealing.

When repairing the automobile circuit, all the sealing rings that pass through the wiring harness at the body holes and holes should be installed in place, because these sealing rings not only play the role of sealing, but also protect the wiring harness. If the sealing ring has been damaged or the wiring harness can rotate or move in the sealing ring, the sealing ring should be replaced, and it should be firmly assembled with the body hole and hole to stabilize the wiring harness.

After the window glass is damaged, the glass with the same curvature as the original window glass should be replaced, and the glass guide groove and the sealing strip should be checked for damage. Since the window often fails to return to its original shape after being repaired, in addition to ensuring that the window glass can be easily pulled or lifted at this time, attention must be paid to the tightness around the window glass after the window is closed.

When repairing a door with a sealing flange, care should be taken to repair the damaged sealing flange to accurately restore the original flange shape. After repairing the door, a tightness check should be carried out by placing a piece of hard paper in the sealed position, closing the door, and then pulling the piece of paper to judge whether the seal is good according to the magnitude of the pulling force. If the force required to pull the paper is too large, the seal is too tight, which will affect the normal closing of the door, and will also cause the seal to quickly replace the sealing performance due to excessive deformation; if the force required to pull the paper If it is too small, it means that the seal is not good, and the phenomenon that the doors will not block the wind or rain will often occur. When replacing the door, be sure to apply hemming glue to the inner and outer panel flanging joints of the new door, and block some small process holes left during stamping with basic tape.

When changing the roof, you should first apply a layer of conductive sealant to the pressure around the roof of the roof. After welding, apply the edge sealant all over the water tank and the seam, which not only helps to seal the body, It can also prevent the car body from generating early corrosion due to water accumulation at the flanging weld. When assembling the door, a whole sealing and isolating film should be pasted on the inner panel of the door below the window. If there is no formed sealing and isolating film, it can be replaced by ordinary plastic paper, and then the sealing and isolating film is pasted and compacted, and finally carried out Production and assembly of interior panels.

When replacing the entire body, in addition to completing the above items, a layer of sealant should be applied to the overlapping part of the weld and the welding point. The thickness of the adhesive layer should be about 1mm, and the adhesive layer must not have virtual adhesion Defects such as air bubbles, air bubbles, etc.; special flanging glue should be applied at the hem; the entire lower surface of the floor and the lower surface of the front wheel cover should be coated with a 3mm-4mm elastic coating and anti-corrosion coating; the upper surface of the floor and the front stand The inner surface of the board should be pasted with sound insulation, heat insulation, vibration damping and damping films, then covered with heat insulation felt blocks, and finally covered with carpets or decorative floors. These measures can not only greatly enhance the sealing of the vehicle and slow down the corrosion rate of the body, but also greatly improve the riding comfort.

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