Production of color stainless steel plate with hot rolled strip steel pickling process to be inspected to check its width, thickness, thickness deviation, plate shape and surface state, etc., whether in line with the quality standards, and sometimes also check whether there are shrinkage holes and other damage to the value of the product defects.Pass through the quality requirements of hot – rolled steel coil to cold rolling.The inspection and test items in each process are as follows:
1. Cold rolling: cold rolling is a process to determine the original plate thickness of color stainless steel plate. In order to maximize the production of qualified cold rolled strip steel with the specified raw materials, the thickness is often controlled by X-ray thickness gauge.
2. Annealing: in both box-type annealing and continuous annealing, the hardness and processing properties of the product shall be inspected to see whether they meet the requirements. Therefore, the original plate after annealing shall be tested by hardness test and edgard cup test.
3. Leveling: leveling is the last working procedure for the original board, and it is the working procedure to determine the quality of rough surface, hardness and shape of the board.The above items shall be inspected and tested.
4. Electroplating, shearing and sorting: the production of electroplated color stainless steel plate is carried out in the line where the steel coil is prepared before electroplating, and the trimming is carried out to determine the width of the strip, which is then sent to the tin electroplating line.In the tin plating line, after tin plating, directly cut into the size of the line, and according to the surface quality and shape of the separation.Some factories are sent to special shearing section for shearing and sorting after curling.
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Post time: May-09-2019