1.Dab tsi yog lub hauv paus ntsiab lus tom qab txoj kev gravimetric rau kev kuaj xyuas?
Sampling: Txiav ib qho piv txwv ntawm thaj chaw paub (feem ntau ncig lossis square) los ntawm galvanized kauj.
Kev Ntsuas: Ntsuas qhov hnyav tag nrho ntawm tus qauv (W1) siv qhov sib npaug ntawm qhov tseeb.
Zinc Stripping: Ua kom tiav cov zinc txheej ntawm cov qauv saum npoo siv cov tshuaj uas tsis yog - zinc stripping tov (feem ntau yog cov tshuaj hydrochloric acid lossis sulfuric acid uas muaj cov tshuaj tiv thaiv corrosion).
Re- qhov hnyav: Ntsuas cov stripped thiab huv huv thiab qhuav steel substrate (W2).
Kev suav:
Zinc txheej hnyav=(W1 - W2)
Zinc txheej hnyav ib chav tsev (g / m²)=(W1 - W2) / Sample cheeb tsam
2.Dab tsi yog lub hauv paus ntsiab lus tom qab X-ray fluorescence spectrometry?
Excitation: Siab-zog X-rays yog tawm los ntawm X-ray raj thiab irradiate lub txav steel strip nto.
Excitation Fluorescence: Thaum zinc atoms zoo siab, lawv tso X-rays theem nrab nrog lub zog tshwj xeeb (piv txwv li, tus yam ntxwv X-ray fluorescence).
Kev Tshawb Nrhiav thiab Kev Ntsuam Xyuas: Ib lub tshuab ntes tau txais cov cim fluorescence no; lawv qhov kev siv zog yog proportional rau qhov hnyav (qhov hnyav) ntawm zinc txheej hauv ib cheeb tsam. Los ntawm kev ntsuas qhov kev siv fluorescence, lub thickness ntawm zinc txheej (feem ntau qhia hauv g / m²) tuaj yeem xam raws sijhawm.
3.Dab tsi yog lub hauv paus ntsiab lus tom qab beta-ray backscattering detection?
Emission: Ib qho chaw siv hluav taws xob (xws li promethium Pm-147 lossis krypton Kr-85) emits beta rays.
Backscattering: Tom qab beta rays tawm tsam steel strip nto, ib feem yog reflected rov qab (backscattering).
Kev Ntsuas: Lub ntsuas ntsuas ntsuas qhov hnyav ntawm cov kab hluav taws xob rov qab. Nws qhov kev siv zog yog cuam tshuam nrog tus lej atomic; zinc muaj tus lej atomic ntau dua li hlau, yog li nws qhov kev siv zog rov qab sib txawv. Los ntawm calibration, kev sib raug zoo ntawm backscattering siv thiab zinc txheej thickness tuaj yeem tsim.
4.Dab tsi yog lub hauv paus ntsiab lus tom qab sib nqus thickness ntsuas?
Siv lub hauv paus ntsiab lus ntawm magnetic induction, sib nqus attraction los yog flux ntawm cov hlau nplaum nyob rau hauv kev sojntsuam thiab cov hlau substrate (sib nqus cov khoom) sib txawv nrog lub thickness ntawm cov uas tsis yog - sib nqus / tsis muaj zog hlau nplaum zinc txheej. Los ntawm kev ntsuas qhov kev hloov no, lub thickness ntawm zinc txheej tuaj yeem txiav tawm.
5.Dab tsi yog daim ntawv thov yam ntxwv ntawm magnetic thickness ntsuas?
Qhov zoo: Cov cuab yeej compact thiab portable, ua haujlwm yooj yim, ceev ceev, thiab tus nqi qis.
Qhov tsis zoo:
Yuav tsum tau calibration: Calibration yog yuav tsum tau siv cov qauv ntawv ntawm uncoated steel substrates thiab txheem nplooj ntawv ntawm paub thickness.
Muaj ntau yam cuam tshuam: Kev ntsuas cov txiaj ntsig tau cuam tshuam los ntawm substrate thickness, curvature, deg roughness, thiab sojntsuam tso siab.
Point-raws li kev ntsuas: Tsuas yog cov ntaub ntawv los ntawm ib qho chaw tuaj yeem tau txais; ntau, kev ntsuas gridded yuav tsum tau soj ntsuam uniformity.