Hot-rolled strip steel used in the production of colored stainless steel plates is inspected during the pickling process to check whether its width, thickness, thickness deviation, shape and surface condition meet quality standards, and in some cases whether there are shrinkage holes and other defects that may damage the value of the product.
Pass the hot rolled steel coil that meets the quality requirement to the cold rolling.
The inspection and test items in each process from the beginning of cold rolling to the product are as follows.

1. Cold rolling: cold rolling is the process that determines the thickness of the original color stainless steel plate. In order to maximize the production of qualified cold rolling strip with specified raw materials that meets the requirements of the order, the thickness is often controlled by X-ray thickness gauge.

2. Annealing: in both box annealing and continuous annealing, it is necessary to check whether the hardness and processing performance of the products meet the requirements. Therefore, hardness test and ehrl process test should be carried out on the annealed original plate.

3. Leveling: leveling is the last procedure for the original plate, which determines the surface roughness, hardness, plate shape and other quality of the product.

Inspection and test shall be carried out for the above related items.

4. Electroplating, shearing and sorting: the production of electroplating colorful stainless steel plate is to cut the edges of the steel coil in the preparation line before electroplating, determine the width of the strip, and then send it to the electroplating tin line.

In the tin plating operation line, after the tin plating, cut directly in line to the specified size, and according to the surface quality and shape of the plate for sorting.
Some factories are sent to special shear section for shearing and sorting after crimping.

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