Le 14 juillet 2015, 08:03 dans Humeurs • 0
Now, a lot of led display makers and products. Acquire LED screen(EN12966), customers frequently are going to the factory there for inspection, it can be essential to know the test led show cabinet typical information.
How you can detect LED Screen:
Testing general visual look and really feel it could initially be noticed irrespective of whether there's a trouble LED screen.
Coating Adhesion: really should no off phenomenon.
Screen Screen: Colour is consistency or colour cast on the phenomenon, the phenomenon is not even light.
Screen look: screen content material ought to be clear, comprehensive, uniform color, no edges, defects, trailing, contamination; specifics of all printing, place(vms), design and style and font size, will probably be described in detail by the corresponding drawings, the manufacturer in strict accordance with the design drawings Requirements screen.
Consistent colour and model (typical vision in natural light or fluorescent observation no colour), the identical batch of item and no colour (Note: colour, such as color and gloss); coating the surface smooth, flat, uniform surface shall have the following defects: quit back stick, granules, missed the end, pitting, blur, wrinkle, mechanical damage.
The way to detect LED box:
Initial, there are several strategies to detect the box, ordinarily utilized tools: calipers, tape measure, level ruler. Case testing requirements: inspectors must strictly stick to the designers drawing on the box one by a single incoming inspection, check for much less leakage machined components, box detection must note the following:
LED cabinet Dimensions deviation is significantly less than 0.5mm, two diagonal distinction of not more than 1mm.
Verify no matter(variable message sign) whether removing burrs, no matter if acute blunt down, will not let scratch hand, sting phenomenon.
Nuts and nut every column must be processed by the back teeth to make sure smooth screw locked.
LED cabinet test regardless of whether the needs of your whole assembly course of action by drawing truthfully, all accessories (such as locks, hinges) shall be made of existing standard components, will have to make sure that its mechanical strength and sealing functionality assembly.
Every box has to be powerful welding welding, no Weld, weld and so on, should be polished welds, weld to become completed to scrape ash handling, remedy process should be rigorous standards. Waterproof seal weld should be polished, smooth no acute angle.
Just after molding LED(speed limit sign) module hole punching and welding must assure flatness of your front, surrounded by the panel may not have warp, deformation, flatness error of less than 1MM; box front panel positioned tightly controlled pore size, pore size and pitch error of significantly less than 0.1mm; X, Y path from the bore axis ought to be set within the very same straight line, respectively, and are perpendicular towards the straight line ought to be the edge of the box, the vertical of significantly less than 1mm.