Machu-Test-Bath
Coatings & Industry > CORROSION > Humidity chamber
The JB Nova Machu-Test-Unstirred Water Baths is ideal for short-term immersion corrosion tests; a 24-hour test corresponds to approximately 500 hours of conventional salt spray testing.
The test is made in a warm and acidic test solution at a temperature of 37 °C for a duration of 48 h.
The Machu test bath is used for the Qualicoat and QIB certification for accelerated weathering of coated aluminum and steel panels.
The JB Nova Machu-Test-Bath is a temperature-controlled 18 litre bath.
The test solution consists of natrium chloride, acetic acid and hydrogen peroxide. After a test period of 24 h the test solution has to be renewed and the pH value corrected by using hydrogen peroxide.
The Machu test is used to obtain the QUALICOAT label and works according to the requirements of QIB (Quality Community for Industrial Coating).
The Machu-Test-Bath container with top cover is made of Stainless steel -
high grade steel,
with durable
polished finish.
Because of the aggressive test solution a smaller container is integrated to place the test panels inside.
The bottom of the test container is equipped with slots to place the test panels with an angle of 20°.
Qualicoat recommends :
"Before immersion, a cross-cut incision with a width of 1 mm shall be made on the significant surface with a special tool to cut the coating down to the metal. If the dimensions of the sample are smaller than 70 x 70 mm, one scratch will be made lengthwise."
"Accelerated corrosion test, on extruded sections of AA 6060 or AA 6063 only"
The test panels need to be scratched crosswise with a 1 mm cutting tool through the coating to the metal by a scratching tool. We recommend our Scratching Tool according to Sikkens, Model 463.
Technical Data
Dimensions: Bath-Container approx. 590 x 335 x 275 mm
Test-Container approx.. 485 x 298 x 132 mm
Weight (net): approx. 9 kg
Temperature: 37 °C +/- 5 °C
Test duration: 48 h +/- 0,5 h
Power supply: 120 or 230 VAC
REF : 113-JBN18 Machu-Test-Bath
