Quality identification method of color stainless steel plate
As the price of color stainless steel plate becomes more and more affordable, the application is more and more extensive. There are many bad merchants in the market, shoddy and shoddy. This not only damages the interests of the owners, but also destroys the market environment of stainless steel decorative panels.
1. Look at the material first
Commonly used materials for color stainless steel plates are 304 common material, 304 rolled material, 201 common material and 201 rolled material.
Among them, 304 has higher corrosion resistance than 201, and ordinary materials are smoother and brighter than calendered materials. Due to the large price difference, many merchants use shoddy materials and use calendered materials as ordinary materials, and 201 as 304. As a result, the color stainless steel plate begins to fade, rust or even break after a few months of use.
Therefore, when we inspect the goods, the first thing we do is to verify whether the material of the sheet meets your requirements.
201 and 304 can be distinguished by detecting the chemical liquid, while ordinary wood and calendered materials are mainly distinguished by observing the quality of the board surface. The surface of ordinary wooden boards is smooth and flat, with uniform color, high brightness, and uniform thickness of the whole board, while the surface of the calendered material board is dark, the color is uneven, there are black or stripes, and the back has defects such as roller lines, multiple blisters, peeling water marks, etc. The difference in surface thickness can reach 2 to 3 wires.
However, with the improvement of the production process and technology of many large-scale calendering plants, the gap between ordinary sheets and rolled sheets has gradually narrowed, and some imitation ordinary sheets may even be confused with real sheets, which can only be distinguished by experienced professionals.
2. Similarly, the effect:
Colored stainless steel sheets are mainly used in the field of decoration, and the decorative and decorative requirements of the surface of the sheet are relatively high.
When inspecting the goods, we must check and observe carefully. The stainless steel plate with good color should have no visible color difference under direct sunlight, and the whole batch of plates should have no color difference.
Uniform color, good color, no scratches, no fading. The surface of the mirror plate has no grinding head and horseshoe pattern, and the brightness is high.
Of course, the better the quality of the board, the higher the price. For the decorative field with low requirements, the requirements for the surface of the board can also be reduced, and more economical decorative boards can be selected.
3. Then tear off the film
The color stainless steel plate is pasted with a protective film before leaving the factory.
Many slow-moving boards have been stored in warehouses for a long time. The protective film is powdery and difficult to tear. Or after tearing, there is a lot of glue on the surface of the board.
Even with transparencies, you have to tear a large piece to see the quality of the film. If you need to cut and bend later, cut the protective film above 6C first to avoid scratching the board surface.
After the color stainless steel plate is installed, the film should be removed and glued as soon as possible. Especially for outdoor decoration, due to direct sunlight, tear off the protective film immediately after construction.
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