Due to the use of high-strength steel plates throughout the day, traction correction cannot be achieved in one step during body alignment. It should be divided into several steps and gradually carried out in a loading holding reloading holding manner to fully restore deformation.

During the pulling process of vehicle body calibration, the movement of the damaged parts of the vehicle body should be carefully observed to see if it matches the expected results. If not, the cause should be checked, the pulling angle should be adjusted and restarted. When pulling the damaged steel plate to a tensioned state, use a hammer to strike it to release the stress, then stretch it again, and strike it again to loosen it, making the correction structure more ideal.

Use the clamp as many times as possible to disperse the tensile load that is too concentrated in one place and prevent local material overload damage. The sequence of stretching and straightening should be carried out gradually from the center outward. After aligning a control point of the vehicle body with its fixing device, the device and crossbeam should be tightened. Position it.

For the cross section bending of vehicle body correction, such as measuring bending, the inner surface of the bending can be clamped and pulled, and the stretching direction should intersect with the symmetrical centerline of the component before deformation, otherwise it will not achieve the effect and instead cause distortion.