Plating Thickness Gauge Calibration Standards - Taw qhia rau Calibration Foils thiab Substrates
1. Calibration foils
Rau cov txheej txheem sib nqus, "foil" txhais tau tias tsis yog hlau nplaum lossis cov ntawv tsis yog xim hlau lossis shim. Rau eddy tam sim no txoj kev, yas foils feem ntau yog siv. Lub "foil" pab txhawb calibration ntawm nkhaus qhov chaw thiab yog tsim nyog tshaj li ib tug qauv ntawv nrog ib tug npog txheej.
2. Substrates
(a) Rau txoj kev sib nqus, cov khoom sib nqus thiab qhov chaw roughness ntawm cov hlau substrate ntawm tus qauv yuav tsum zoo ib yam li cov hlau substrate ntawm qhov yuav tsum tau kuaj. (b) Rau eddy tam sim no txoj kev, cov khoom hluav taws xob ntawm lub hauv paus hlau ntawm tus qauv yuav tsum zoo ib yam li cov hauv paus hlau ntawm daim ntawv xeem yuav tsum tau kuaj. Txhawm rau kom paub meej tias qhov tsim nyog ntawm tus qauv, lub hauv paus hlau ntawm tus qauv yuav raug muab piv nrog cov ntawv nyeem ntawm lub hauv paus hlau ntawm daim ntawv xeem yuav raug kuaj.
(b) Yog hais tias lub thickness ntawm lub hauv paus hlau ntawm cov khoom yuav tsum tau kuaj tsis tshaj qhov tseem ceeb thicknesses teev nyob rau hauv Table I, calibration yuav ua tau los ntawm ob qho tib si hauv qab no:
(1) Calibration ntawm tus qauv hlau daim ntawm tib lub thickness raws li cov hlau substrate ntawm daim yuav tsum tau kuaj;
(2) Sab hauv cov qauv hlau lossis cov khoom kuaj nrog cov hlau ntawm cov tuab txaus thiab cov khoom siv hluav taws xob zoo sib xws, yog tias tsis muaj qhov sib txawv ntawm lub hauv paus hlau thiab cov hlau hauv ob sab phlu. Txoj kev liner tsis tuaj yeem siv rau cov qauv nrog npog ntawm ob sab.
(3) Yog tias qhov curvature ntawm lub npog txheej yuav tsum tau kuaj tau mus txog qhov chaw uas nws tsis tuaj yeem calibrated rau ntawm lub tiaj tiaj, qhov curvature ntawm cov txheej txheem nrog lub hau npog yog tsis tsim nyog.
Qhov curvature ntawm daim ntawv txheej txheem nrog txheej txheej los yog curvature ntawm lub hauv paus hlau muab tso rau hauv cov ntawv ci calibration yuav tsum zoo ib yam li curvature ntawm cov qauv.
