With the innovation of stainless steel material technology, stainless steel car body is becoming the mainstream of subway development. There is no coating cost for the stainless steel car body, and the working hours can be greatly shortened.
The stainless steel plate material determines the appearance quality of subway vehicles. Therefore, the stainless steel plate for subway has extremely high requirements on the shape, surface texture, color and product stability of the raw material.
From surface grinding to straightening the plate shape, to trimming, laminating and flattening, it is necessary to ensure a high standard and high quality finish. In view of the shape problem that affects the welding process of the material, cold rolling strengthens the control of the whole process before frosting to ensure the shape and surface color during frosting.
After the frosting is completed, confirm the straightening of the plate shape again, so that the unevenness of the ex-factory products is controlled within 3mm to ensure the flatness of the car body panel during the vehicle manufacturing process.
