Lodīšu krātera tests (rukuma tests) ir labi izveidota metode slāņa biezuma noteikšanai. Ar rotējošu tērauda lodīti un abrazīvu
pastu parauga pamatmateriālā caur pārklājumu tiek ieslīpēts sfērisks iedobums. Pārbaudot ar mikroskopu,
slāņa/pamatmateriāla saskarne ir redzama kā aplis, bet daudzslāņu pārklājuma gadījumā — kā koncentrisku apļu sistēma. Slāņa
biezumu var aprēķināt pēc šo apļu diametriem un slīpēšanas lodītes diametra.
Šī tīri ģeometriskā metode sniedz ļoti precīzus rezultātus, pat ja slāņa biezums ir mikrometru diapazonā.
Technical Specifications
Tehniskie dati
Lodītes diametrs 15–30 mm
Gludu paraugu iespīlēšanas diapazons 50 mm
Apaļu paraugu iespīlēšanas diapazons 3–30 mm (spīles citiem izmēriem pēc pieprasījuma)
Galda šķērsgājiens 25 x 25 mm
Parauga noliekums 60 grādu
Gaismas diožu rādījumi (14 mm augstumā) — 4 cipari apgriezienu skaitam; 4 cipari izpildlaikam; 1 cipars programmas numuram
Piedziņas ass apgriezienu skaits — 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 1100, 1200 1/min.
Darbības periodi — 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90, 100, 110, 120, 150, 180 s
Ievades sprieguma amplitūda — 85–264 V maiņstrāva
Ieejas frekvenču diapazons — 47–63 Hz
Izmēri 300x295x235 mm (P/Dz/A)
Svars apm. 8 kg
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