European railway wagons are mainly lightweight and high-speed as the main direction of development,for the double-decker car transporter produced by the German DB company,which is mainly made of steel profiles and thin plates welded together,the main body frame in the premise of meeting the requirements of the use of rigidity is small,the welding volume is relatively concentrated,welding deformation is large,especially the floor is made of thin plates spliced together,the welding stress and shot blasting stress under the dual role of the larger waves of deformation.Deformation.By adopting a series of technological measures to prevent the deformation of thin plate,the problem of welding deformation of underframe floor of railway double-decker car transporter is solved.
NETL
NSTL
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