Einleitung
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-Produkte oder -Komponenten müssen einem Salzsprühnebeltest unterzogen werden? [In der Regel nur für Produkte oder Bauteile mit Salzsprühnebel oder Korrosionsgefahr in der Arbeitsumgebung]
Ein Metall und seine Legierung
B Metallbeschichtung, z. B. verzinnte Vernickelung
C Organische Beschichtung, z. B. Spray
D: Eloxaler 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 Korrosionsprüfung durch künstliche Atmosphäre Salzsprühnebelkorrosion
ASTM B117 US-Standard-Salzsprühtest
GB/T 2423.17, IEC 60068-2-11 Salzsprühnebeltest für elektronische Produkte
GB/T 2423.18, IEC 60068-2-52 Elektronik Salzsprühnebel-Wechseltest
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.
Klassifizierung des künstlich simulierten Salzsprühnebeltests:
(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 Test mit unserer Salznebelkammer im JOEO Laborraum)
(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.
(LED-Chip-Salzsprühtest)
(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.
(Salzsprühnebeltest für Straßenlaternen im JOEO-Laborraum mit Salznebelkammer)
Modell | Salz-Nebel-Kammer | etw - 90 | STH-100-KARTON | STH-120-KARTON | STH-160-KARTON | STH-135-KARTON | STH-200-KARTON | STH-210-KARTON |
Innenmaß BxHxT (mm) | 900x600x500 | 1000x700x600 | 1200x800x500 | 1600x1000x500 | 1350x850x1200 | 2000x1200x600 | 2100x950x1250 | |
Außenmaß BxHxT (mm) | 1500x1300x1000 | 1560x1000x1350 | 1900x1100x1400 | 2300x1300x1400 | 2160x1200x1450 | 2700x1500x1500 | 2711x1150x1970 | |
Fassungsvermögen (L) | 270 | 430 | 480 | 800 | 1377 | 1440 | 2500 | |
Prüfnorm | ACSS, EINWEICHEN, TROCKENLUFT, HUMI, RAUMLUFT | |||||||
Temperaturbereich | 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 | |||||||
Feuchtigkeitsbereich | 20% ~ 98% relative Luftfeuchtigkeit (Temperatur RT{+15 °C} ~ 80 °C), 15 % ~ 95 % relative Luftfeuchtigkeit Luftentfeuchter oder Trockner hinzufügen | |||||||
Temperatur steigend/ Fallende Geschwindigkeitsrate | Temperaturanstieg ca.: 0,1 ~ 3,0 ° C / min ( 3-10 ° C / min gesamter Kurs Durchschnitts-optional) Temperatur fallend ca.: 0,3-1,0°C/min ( 3-10°C/min gesamter Kurs Durchschnitt-optional) | |||||||
Analytische Genauigkeit/ Gleichmäßigkeit der Verteilung von Temperatur und Luftfeuchtigkeit | 0,1°C ; 0,1% r.F. ±2,0 °C ; ±5% r.F. | |||||||
Regelgenauigkeit der Temperatur | ±0,5 °C ±2,5 °C 2 % relative Luftfeuchtigkeit | |||||||
Temperatur des Druckeimers | Kochsalz-Testmethode (NSS ACSS) 47±1 °C; Korrosionstest (CASS)63±1°C | |||||||
Druckluftdruck (KGf) | 1.0-6.0 | |||||||
Sprühvolumen | 1,0-2,0 ml/80 cm²/h (mindestens 16 Stunden arbeiten und den Durchschnittswert nehmen) | |||||||
Kompressor | Französische Marke "Tecumseh", Deutschland Marke "Bitzer" oder Marke Samilar | |||||||
Optionales Zubehör | Musterregal, Wagen usw. | |||||||
Sprühmethode | Kontinuierliches Sprühen oder programmierbares Sprühen | |||||||
Macht | AC220V: 1phasig3 Leitungen 50/60Hz AC380V: 3 Phasen 5 Leitungen 50/60Hz |