Test standard of Signi ALuminum's mirror finish aluminum shee

1.Mirror finish aluminum sheet surface requires surface covering, and the total reflectivity of mirror is above 86%.
 
2.Mirror finish aluminum sheetsurface should beno scratches, scratches, scratches, bruises, cracks, bubbles, stains, bumps, distortions, sand eyes, marks, corrosion and other harmful defects and no oxidation.
 
3. The non appearance surface quality requirements:
 
Non appearance surface should not have scratches, scratches, bruises, cracks, bubbles, stains, convex and concave, distortions, sand eyes, marks, corrosion and other harmful defects, no oxidation, but a few minor minor bruises, scratches and scratches, the number of scratches within the same surface 500*500mm range is not More than 4, the depth of the wound can not have a sense of hand.

 
4. Color difference requirement
The color requirement of each batch is consistent. The color difference of the same batch should be less than 2, and the color difference of different batches should be less than 3.
 
 
5. Protective film requirements:
Protective film appearance and viscosity requirements: the protective film is required to be white or yellow adhesive film, the same batch of orders, no obvious color difference, covering the surface of the protective film on the product should not have stains, foreign objects, particles, more impurities such as dirt, foreign objects and particles are not allowed to be wrapped in the middle of the film and products. It can completely cover the product and the membrane must be smooth, bubble free, wavy wrinkle, membrane breakage, incision and so on.


6, Heat resistance
Heat for 1.5 hours in the oven, 450 degree constant temperature for 5 hours, cooling for 17 hours, repeated tests 2 times, the material surface no change, must keep the original metallic luster of the material.
 
6. Stamping performance
No cracking, wrinkling, drawing, breaking and edge missing can be found on the surface of the press after stamping.