Chery QQ, Service Manual

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Chery QQ Service Manual Body System
(1) Heating position and flame energy.
Effectiveness of flame straightening is up to heating position and flame energy, different heating
position result in different straightening effectiveness. The maximum and longest deformation
position shall be selected to be the heating position, that is to say the outside of deformation.
Different flame energy heating results in different straightening ability. The more the flame
energy, the more the heating speed, the stronger the contraction ability, the more concentrated the
heating energy , it is ok to heat the low carbon sheet metal to cherry red color
（ 600 ~800 ℃ ℃ ） .
(2) Heating mode
Heating mode which flame straightening method adopt in common use in vehicle body
maintenance include:
1) Point -like heating, it means that heating area is the circle-like points within certain diameter
scope, generally speaking, the diameter is 15-30mm,you can heat one point or more adopting
quincunx distribution accordingly, it is often applicable to the contraction of protruding in the
middle of the panel.
2) Triangle heating, it means that heating area representing triangle shape, it happens frequently
in the deformation of strip material and panel edge.
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Chery Automobile Co., Ltd