Abstract:The surface of mechanical insulated van body will get rusty after it is used for a while.At present,dust removal depends on manual work.However,the mechanical insulated van body area is large,thus manual work of rust removal has large labor strength.Aiming at the technological requirements of rust removal on the surface of mechanical insulated van body,a method of bidirectional scanning groove contour feature to confirm rescanning technological parameters of dust removal was proposed.The experimental results indicate that the confirmative method of technological parameters is feasible in certain range.Laser rust removal can reach the coating cleanliness standard of mechanical insulated van body and meets requirements of surface roughness.It provides an effective technological parameters confirmative method for surface cleaning of mechanical insulated van.