Bending Coating Tester NOVOTEST BEND-M1519

Bending Coating Tester NOVOTEST BEND-M1519



Order

Description

Bending Coating Tester NOVOTEST BEND-M1519 memungkinkan untuk mengukur elastisitas dan kekuatan pelapis melalui pembengkokan pelat logam dengan lapisan yang diuji yang diterapkan di sekitar sekumpulan batang silinder dengan diameter batang dari 2 mm sampai 32 mm (diameter lain berdasarkan permintaan). Perangkat ini sesuai dengan ISO 1519-73 dan berlaku untuk cat dan menentukan metode untuk menentukan elastisitas film selama pembengkokan. Metode ini terdiri dari penentuan diameter minimum batang logam silindris, setelah membungkuk di sekelilingnya, pelat logam yang dilukis, tidak mengalami kerusakan mekanis atau delaminasi film cat tunggal atau multi lapisan (ISO 1519, DIN 53 152 ). Fleksibilitas diuji dengan membulatkan pelat timah dengan lapisan di sekitar batang silinder dengan diameter 2 sampai 32 mm. Nilai fleksibilitas lapisan dengan ketebalan film tertentu - adalah diameter batang terkecil, saat retak tidak terjadi.

Bending Coating Tester NOVOTEST BEND-M1519 adalah instrumen yang terdiri dari rangka dengan klem tetap untuk sampel yang diuji dan mekanisme khusus untuk pelat pembulatan di sekitar batang dengan diameter yang berbeda. Sampel yang telah disiapkan sebelumnya ditempatkan di antara klem dan diamankan dengan memutar gagangnya. Setelah itu dorong benda uji ke bagian atas batang dengan memutar pegangan dan lentur pelat di sekitar batang.


Spesification

Measurement range

from 2 mm to 32 mm (others – on request)

The length of the test bars, no more

80 mm

Diameters of cylindrical rods

2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 16 mm, 20 mm … 32 mm

The material of rods

steel

 

Application of the device

It is recommend to use painted tin plate.

Tin plate has to have a smooth surface without any voids, rusty spots, fibrations and impurity.

The test samples are rectangular plate with length 100 – 200 mm and width 20 – 50 mm, which are made of black polished tin metal sheet with thickness 0,25 – 0,32 mm or aluminum sheets and strips with  thickness 0.25 – 0.30 mm which coated with single-layer or multi-layer paint film on them.

 

The method of applying the paint on the material, thickness of film, number of layers, conditions and time of drying and exposure of the film before the test, must be specified in the specifications and technical documentation of the tested material.

The samples before testing are to be withstanded at the conditions which are specified in the specifications and technical documentation of the painting material.

The time and degree of drying is determined according to ISO 1519, DIN 53 152.

The thickness value of tested paint film which applied to the plate can be measured with coating thickness gauges, for example Coating Thickness Gauge NOVOTEST TP-1.

 

The tin plate is to be secured in clamps on the rod with maximum diameter (20 mm), coated side to outside, and pressing it tightly to the rod, smoothly bend it within 1 – 2 s for 180 ° around the rod.

After that coating layer at the bend-place is to be analysed using magnifying glass with 4-fold zoom for cracks and delamination.

If defects are absent, user has to repeat bending of the plate, but each time at a different location, successively from larger to smaller diameter of the rod, until an? mentioned above defects are spotted.

If the specifications and technical documentation to the painting material stipulated the value of elasticity (rod diameter), the test is carried out using only a rod of this diameter.

The result should be the minimum diameter of the rod in millimeters, when the tested sample after bending haven’t any destruction on paint film.

Evaluation elasticity value of the film through the bending on a metal rod makes after three tests of plates on the same rod.