Abstract:

Bodywork of a car and uncoated base material are selected for simulation experiment, and the characteristics of heating trace under different heating time, temperature and cooling conditions are observed. Through comparative analysis, the influence of automobile paint on heating trace of bodywork of a car is studied. Experiments show that car paint has a certain protective effect on the base material, and the protective effect under natural cooling is better than that under water cooling; Under natural cooling conditions, the car body will not rust; The influence of heating temperature on car paint is far greater than that of heating time. At the same time, combining the investigation conclusion closely with practical work, this paper puts forward the on-site discrimination method of heat marks of bodywork of a car, which has certain reference value for automobile fire investigation.

Key words:

fire investigation, bodywork of a car, heat trace, base material