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Quality identification method of color stainless steel plate

by:Topson     2022-07-31

As the price of colored stainless steel plate becomes more and more affordable, the application is more and more extensive. There are many unscrupulous merchants in the market who shoddy and cut corners. This not only damages the interests of the majority of owners, but also destroys the market environment of the entire stainless steel decorative sheet.

First look at the material:

The common materials of color stainless steel plate are 304 material, 304 calendering material, 201 material and 201 calendering material. Among them, 304 has higher corrosion resistance than 201, and the real material is smoother and brighter than the calendered material. Because of the large price difference, many merchants use shoddy products, using calendered materials to pretend to be genuine materials, and using 201 to pretend to be 304. As a result, the color stainless steel plate began to fade, rust or even break after a few months of use. Therefore, when we inspect the goods, the first thing to do is to verify whether the material of the plate is the one you specified.

201 and 304 can be distinguished by the detection potion, while the real material and the calendered material are mainly distinguished by observing the quality of the board surface. The surface of the board is dark, the color is uneven, there are often black or stripes, and the back has defects such as roller embossing, sand holes, peeling water marks, etc. The thickness difference of the board surface can reach 2 to 3 silks. However, with the improvement of the production process and technology of many large-scale calendering plants, the gap between the real material and the calendering material is gradually narrowing. Some imitation real material boards can even be faked, which requires professionals with rich experience to distinguish.

Look at the effect again:

Color stainless steel plates are mainly used in the field of decoration, and have high requirements on the ornamental and decorative properties of the plate surface. When inspecting the goods, be sure to inspect and observe carefully. A good color stainless steel plate should have no visible color difference under direct sunlight, and no color difference in the whole batch of plates. Uniform coloring, good color, no scratches and no fading. The surface of the mirror panel should be free of grinding head flowers and horseshoe prints, with high brightness. Of course, usually the better the quality of the board, the higher the price. For the decorative field with low requirements, the requirements for the board surface can also be reduced, and more economical and more affordable decorative boards can be selected.

Then peel off the film:

The color stainless steel plate will be pasted with a layer of protective film before leaving the factory. Many slow-moving boards have been left in the warehouse for a long time, and the protective film has been powdered, which is difficult to tear, or after tearing, a lot of glue is still stuck on the surface of the board, which is ugly and difficult to remove, which is time-consuming and labor-intensive. Even if it is a transparent film, when you inspect the goods, you must tear a large piece to see the quality of the film. If you need to cut and bend it later, put a protective film above 6C first to avoid scratching the board surface. After the color stainless steel plate is installed, the film layer should be torn off as soon as possible, and the glue should be applied. Especially for outdoor decoration, due to direct sunlight, tear off the protective film immediately after construction.

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