Spray Truck Tyre carburized gear on the impact of surface residual stressOn the jet Truck Tyre so that the surface residual stress in the fmation of the reasons accding to AlObaid who point: When the highspeed steel Truck Tyre impact to the sample surface while the impact of residual plastic defmation at a pressure pit when me many of Steel Truck Tyre impact to the specimen surface will produce a layer of the sample surface layer of unifm plastic defmation plastic defmation layer as the volume expansion will be subject to plastic defmation from neighbing areas are not restricted so the whole plastic changed by a compressive stress layer.