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Section 2 Typical Technology Of Body Panel Repair
The flow line of the repair technology is as follows:
Section 3 Repair after Body Damage
Body repair methods include calibration, reshaping, strengthening, partial replacement and renewing of a
whole part. CO2 gas protecting welding should be adopted when welded.
I. Reshaping
1. Calibration
The deformation of the body is usually caused by an accident. You can calibrate it by propping to its former
location. When calibrating, impose force in the opposite direction of the outside force or deformation force.
Under the most circumstances, calibration in a cool status can be adopted. The internal stress can be re-
moved by partial heating. Then you can do some corresponding aging treatment.
It is better to use body calibration machine for car body calibration. Geometric dimension and tolerance can
be restored to the former standard. Power, economy and comfortableness can be assured.
The body repair begins with a process of preliminary calibration or rough calibration. The body deformation
can be removed by propping back to its former location. The angle of the applied force for propping back
should be almost the same with the outside force that causes damage. Reaction force should be imposed at
the back of the pulling action point to make the propping force adjustable. Inspect the deformation during the
process of propping back. Proper heating is applied on correspondent parts to remove internal stress.
2. Strengthening
When partial damage, break or crackle occur on structural components, strengthening is allowed, especially
to be applied in those parts where damage often occurs. Willful strengthening or repair welding should be
avoided, because it will affect the stressing status on body.
The main ways of strengthening are sleeving and bracket reinforcement.
3. Partial And Whole Part Replacement
The parts that are badly rusted should be partially replaced. What is broken and damaged should be replace
a new one. The post pillar is pressed and molded adopting thin sheet. Parts and components are brought from
manufacturers. When they are molded by you, material, section dimension, and thickness etc should accord
with their original design requirements. When the broken post pillar (incl. cross member) is wholly replaced,
the connection way must be the same with the original one.
Appearance assessment Disassembly Paint removal Appraisal
Panel repair
Assembly
Painting
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