Införandet
With the widespread promotion of LED applications, the requirements for its reliability are becoming higher and higher. The LED reliability test is to evaluate the stability and reliability of the product in a specific environment and use conditions. For LED products, we mainly focus on the lamp bead life, heat resistance, light decay, impact resistance and environmental adaptability and other indicators of the test and evaluation.
LED-produkter eller komponenter behöver göra saltspraytest? [Vanligtvis endast för produkter eller komponenter med saltstänk eller risk för korrosion i arbetsmiljön]
A Metall och dess legering
B Metallbeläggning, t.ex. förtennad nickelplätering
C Organisk beläggning, t.ex. spray
D: Anodisk oxidationsfilm
Under salt fog chamber that we usually refer to relevant national and industry standards to ensure the accuracy and comparability of test results. for example:
GB/T 10125, ISO 9227 Korrosionstest med konstgjord atmosfär saltspraykorrosion
ASTM B117 US standard saltspraytest
GB/T 2423.17, IEC 60068-2-11 Saltspraytest för elektroniska produkter
GB/T 2423.18, IEC 60068-2-52 elektronik alternerande saltspraytest
Salt spray test: the LED sample is exposed to salt spray environment, simulate the use scenario in the Marine environment, by observing the change of its surface corrosion, electrical performance changes and other indicators, to evaluate its reliability in a strong corrosion environment.
Testklassificering för artificiell simulerad saltspray:
(1) Neutral salt spray test (NSS test)
It is the earliest and most widely used accelerated corrosion test method. It uses 5% sodium chloride brine solution, the PH value of the solution is adjusted in the neutral range (6.5~7.2) as a spray solution. The test temperature is set at 35℃, and the settlement rate of salt spray is required to be between 1-2ml/80cm2(h).
【 Neutral salt spray test is the most commonly used test method. If no special instructions are made, the salt spray test we talk about usually refers to the neutral salt spray test 】
(Downlight Spray-testning med vår saltdimkammare i JOEO-labbrummet)
(2) Acetate spray test (ASS test)
It is developed on the basis of the neutral salt spray test.
It is to add some glacial acetic acid in 5% sodium chloride solution, so that the PH value of the solution is reduced to about 3.1-3.3, the solution becomes acidic, and the salt spray finally formed is also from the neutral salt spray into acid.
(3) Copper accelerated acetate spray test (CASS test)
It is a rapid salt spray corrosion test recently developed abroad. The test temperature is 50℃, and a small amount of copper salt - copper chloride is added to the salt solution to strongly induce corrosion.
(Test av LED-chipsaltspray)
(4) Alternating salt spray testIs a comprehensive salt spray test
It is actually a neutral salt spray test plus constant wet heat test.
It is mainly used for cavity type machine products, through the penetration of tidal environment, so that salt spray corrosion is not only produced on the surface of the product, but also produced inside the product. It is the alternating conversion of the product in the salt spray and wet and hot two environmental conditions, and the final examination of the electrical and mechanical properties of the whole machine product.
(Testning av saltspray med gatubelysning i JOEO-labbrum med saltdimkammare)
Modell | Saltdimma kammare | STH - 90 | STH-100 | STH-120 | STH-160 | STH-135 | STH-200 | STH-210 |
Invändiga mått BxHxD (mm) | 900x600x500 | 1000x700x600 | 1200x800x500 | 1600x1000x500 | 1350x850x1200 | 2000x1200x600 | 2100x950x1250 | |
Yttermått BxHxD (mm) | 1500x1300x1000 | 1560x1000x1350 | 1900x1100x1400 | 2300x1300x1400 | 2160x1200x1450 | 2700x1500x1500 | 2711x1150x1970 | |
Kapacitet (L) | 270 | 430 | 480 | 800 | 1377 | 1440 | 2500 | |
Provning Standard | ACSS, BLÖTLÄGGNING, TORRLUFT, HUMI, ROOMAIR | |||||||
Temperaturområde | A: RT (+15 °C) ~ +85°C B: -10°C ~ +85°C C:-20°C ~ +85°C D:-40°C ~ +85°C E:-55°C ~ +85°C | |||||||
Luftfuktighet | 20% ~ 98% RH (temperatur RT{+15 °C} ~ 80 °C), 15% ~ 95% RH lägg till avfuktare eller torktumlare | |||||||
Temperaturen stiger/ Fallande hastighet | Temperaturhöjning ca: 0,1 ~ 3,0 °C / min (3-10 ° C / min hela kursen Medelvärde - valfritt) Temperaturen faller ca: 0.3-1.0 ° C / min (3-10 ° C / min hela kursen Genomsnitt - valfritt) | |||||||
Analytisk noggrannhet/ Fördelningsenhetlighet för temperatur och luftfuktighet | 0,1 °C ; 0,1 % relativ luftfuktighet ±2,0 °C ; ±5% relativ luftfuktighet | |||||||
Temperaturens kontrollnoggrannhet | ±0,5 °C ±2,5 °C 2 % relativ luftfuktighet | |||||||
Tryckskopans temperatur | Testmetod med saltlösning (NSS ACSS) 47±1 °C. Korrosionstest (CASS)63±1°C | |||||||
Tryckluftstryck (KGf) | 1.0-6.0 | |||||||
Spraya volym | 1,0-2,0 ml/80 cm²/h (arbetar minst 16 timmar och tar medelvärdet) | |||||||
Kompressor | Franskt "Tecumseh"-märke, Tyskland "Bitzer"-märke eller samilar-märke | |||||||
Valfria tillbehör | Provhylla, vagn etc | |||||||
Spraya metod | Kontinuerlig spray eller programmerbar spray | |||||||
Kraft | AC220V: 1-fas 3 linjer 50/60 Hz AC380V: 3-fas 5 linjer 50/60Hz |