Kev ceev faj rau txheej Thickness Gauge (1)
Cov txheej thickness gauge mas siv qhov kev hloov ntawm lub magnetic teb zog ntawm lub electromagnetic teb nyob rau hauv nruab nrab ntawm txawv thickness los xam cov thickness tus nqi. Yog li ntawd, ib qho kev cuam tshuam ntawm lub zog ntawm lub magnetic teb yuav ncaj qha ua rau kev ntsuas qhov yuam kev hauv cov xwm txheej hauv qab no:
1. Cov khoom kuaj nws tus kheej muaj cov hlau nplaum
Qee cov ntaub ntawv muaj cov hlau nplaum seem hauv cov ntaub ntawv ntsuas thaum lub sijhawm ua haujlwm lossis qee yam kev xav tau thev naus laus zis. Vim nws qhov kev faib tsis sib npaug, qhov kev ntsuas qhov ua yuam kev kuj tsis sib haum, thiab qhov ntsuas qhov ntsuas ntawm qee qhov ntawm tib lub workpiece yuav dheev ua loj lossis me dua.
2. Cov qauv ntawm cov khoom siv kuaj yog txawv thiab cov duab sib txawv
Ntawm cov khoom ua haujlwm nrog cov qauv sib txawv, cov khoom sib nqus sib nqus yuav sib txawv nrog cov qauv sib txawv thiab cov duab, uas ua rau kev ntsuas yuam kev.
3. Qhov sib txawv ntawm cov khoom siv tib yam kuj tseem tuaj yeem tsim cov kev hloov pauv hauv cov hlau nplaum. Piv txwv li, cov ntug thiab qhov nruab nrab ntawm cov khoom muaj qhov sib txawv ntawm cov khoom sib nqus, uas yuav ua rau kev ntsuas tsis raug.
4. Cov khoom ntawm cov khoom siv kuaj yog sib txawv, thiab cov hlau nplaum sib nqus yuav txawv, uas kuj yog ib qho ntawm cov laj thawj rau qhov yuam kev.
Cov teeb meem xav tau kev saib xyuas hauv kev siv cov txheej thickness ntsuas (2)
Vim hais tias cov electromagnetic teb muaj cov ntaub ntawv sib txawv ntawm cov qauv sib txawv, nws ua rau kev ntsuas yuam kev. Txhawm rau kom tsis txhob ua yuam kev los ntawm kev ua haujlwm, thov ua raws li cov hauv qab no thaum siv:
1. Thaum rov ntsuas qhov ntsuas ntawm qhov qub, qhov kev sojntsuam yuav tsum tau sib cais ntau dua 10cm txhua lub sijhawm, thiab qhov ntsuas yuav tsum rov ua dua tom qab ob peb feeb, kom tsis txhob muaj qhov sib nqus ntawm qhov kev sojntsuam, uas yuav cuam tshuam rau kev ntsuas tom ntej. tshwm sim;
2. Thaum siv, lub dav hlau raug hloov mus rau xoom los ntsuas lub dav hlau, lub convex nto yog hloov mus rau xoom los ntsuas qhov convex nto, thiab lub concave nto yog hloov mus rau xoom los ntsuas qhov concave nto, thiaj li tsis txhob ntsuas qhov yuam kev. rau cov qauv sib txawv;
3. Sim siv cov khoom siv los ntsuas raws li xoom-kho matrix kom tsis txhob ntsuas qhov yuam kev vim qhov sib nqus permeability ntawm cov khoom sib txawv;
4. Sim xoom-kho qhov qub ntawm cov khoom siv los kuaj, thiab tom qab ntawd ntsuas qhov qub dua. Piv txwv li, xoom hloov yuav tsum tau ua nyob rau ntawm ntug thiab nruab nrab ntawm workpiece;
5. Qhov saum npoo siv rau xoom hloov kho yuav tsum du li sai tau; qhov roughness ntawm qhov saum npoo ntawm cov khoom kuaj tau muaj kev cuam tshuam zoo rau qhov ntsuas tus nqi, yog tias qhov saum npoo tsis du, qhov nruab nrab tus nqi yuav tsum tau ua raws li qhov xwm txheej;
6. Thaum ntsuas, qhov kev sojntsuam yuav tsum tau khaws cia rau ntawm qhov chaw ntawm cov khoom siv los ntsuas, txwv tsis pub yuav muaj qhov yuam kev loj..
1. Sib nqus attraction ntsuas txoj cai thiab thickness gauge
Lub zog nqus ntawm cov hlau nplaum (kev sojntsuam) thiab cov hlau nplaum hlau yog proportional rau qhov kev ncua deb ntawm ob, uas yog lub thickness ntawm txheej. Siv lub hauv paus ntsiab lus no los ua ib lub thickness gauge, tsuav yog qhov sib txawv ntawm qhov sib nqus permeability ntawm txheej thiab substrate loj txaus, nws tuaj yeem ntsuas tau. Raws li qhov tseeb tias feem ntau cov khoom lag luam raug stamped thiab tsim los ntawm cov qauv hlau thiab cov ntawv kub-kuav los tiag thiab txias-kuav los tiag steel daim hlau, cov hlau nplaum thickness gauges yog feem ntau siv. Lub hauv paus qauv ntawm lub thickness gauge yog tsim los ntawm hlau nplaum hlau, relay caij nplooj ntoos hlav, nplai thiab nws tus kheej-stop mechanism. Tom qab cov hlau nplaum thiab cov khoom yuav tsum tau ntsuas yog attracted, lub ntsuas lub caij nplooj ntoos hlav yog maj elongated, thiab lub rub quab yuam yog maj nce. Thaum lub zog rub tsuas yog ntau dua li lub zog nqus, lub thickness ntawm txheej tuaj yeem tau txais los ntawm kev sau lub zog rub lub sijhawm thaum cov hlau nplaum sib nqus. Cov khoom tshiab automate cov txheej txheem kaw no. Cov qauv sib txawv muaj ntau yam sib txawv thiab siv sijhawm. Cov yam ntxwv ntawm cov cuab yeej no yooj yim rau kev khiav lag luam, ruaj khov thiab ruaj khov, tsis muaj hluav taws xob, tsis muaj calibration ua ntej ntsuas, thiab tus nqi qis, uas yog qhov tsim nyog rau kev tswj xyuas hauv qhov chaw zoo hauv kev cob qhia.
2. Lub hauv paus ntsiab lus ntawm eddy tam sim no ntsuas
Lub high-frequency AC teeb liab generates ib tug electromagnetic teb nyob rau hauv lub sojntsuam kauj, thiab thaum lub sojntsuam nyob ze rau tus neeg xyuas pib, eddy tam sim no yog tsim nyob rau hauv nws. Qhov ze ntawm qhov kev sojntsuam yog mus rau qhov conductive substrate, qhov ntau dua qhov eddy tam sim no thiab ntau dua qhov kev xav impedance. Qhov kev tawm tswv yim no qhia txog qhov kev ncua deb ntawm qhov kev sojntsuam thiab cov khoom siv hluav taws xob, uas yog, lub thickness ntawm cov txheej txheem uas tsis yog-conductive ntawm lub conductive substrate. Vim tias cov kev sojntsuam no tau tsim los ntsuas qhov tuab ntawm cov txheej txheem ntawm cov hlau tsis yog ferromagnetic substrates, lawv feem ntau hu ua non-magnetic probes. Cov kev sojntsuam tsis sib nqus siv cov khoom siv ntau zaus ua cov coil cores, xws li platinum-nickel alloys lossis lwm yam khoom tshiab. Piv nrog rau lub hauv paus ntsiab lus ntawm kev sib nqus induction, qhov sib txawv tseem ceeb yog qhov kev sojntsuam sib txawv, qhov zaus ntawm lub teeb liab sib txawv, thiab qhov loj thiab qhov sib txawv ntawm cov teeb liab sib txawv. Zoo li cov hlau nplaum induction thickness gauge, lub eddy tam sim no thickness gauge kuj ua tau ib tug siab daws teeb meem ntawm 0.1um, ib tug tso cai yuam kev ntawm 1 feem pua, thiab ib tug ntau ntawm 10 hli. Lub thickness gauge siv lub eddy tam sim no txoj cai yuav ntsuas tsis-conductor coatings rau tag nrho cov conductors nyob rau hauv txoj cai, xws li xim rau saum npoo ntawm aerospace aircraft, tsheb, khoom siv hauv tsev, aluminium alloy qhov rooj thiab qhov rais thiab lwm yam khoom txhuas, yas coatings thiab Anodized zaj duab xis. . Cov khoom siv cladding muaj qee yam conductivity, uas tuaj yeem ntsuas los ntawm calibration, tab sis qhov piv ntawm cov conductivity ntawm ob yuav tsum muaj tsawg kawg yog 3-5 zaus sib txawv (xws li chrome plating ntawm tooj liab). Txawm hais tias steel matrix kuj yog ib qho hluav taws xob conductor, nws yog qhov tsim nyog los siv lub hauv paus ntsiab lus sib nqus rau cov dej num.
3. Lub hauv paus ntsiab lus ntawm magnetic induction ntsuas
Thaum siv lub hauv paus ntsiab lus ntawm magnetic induction, lub thickness ntawm txheej yog ntsuas los ntawm qhov loj ntawm cov hlau nplaum flux ntws mus rau hauv lub ferromagnetic matrix los ntawm kev sojntsuam los ntawm cov non-ferromagnetic txheej. Qhov loj ntawm qhov sib thooj magnetoresistance kuj tuaj yeem ntsuas los qhia qhov tuab ntawm txheej. Qhov tuab ntawm txheej, qhov loj dua qhov magnetoresistance thiab qhov me me ntawm cov hlau nplaum. Lub thickness gauge siv lub hauv paus ntsiab lus ntawm magnetic induction nyob rau hauv lub hauv paus ntsiab lus muaj lub thickness ntawm cov hlau nplaum conductive txheej ntawm cov hlau nplaum conductive substrate. Feem ntau, qhov sib nqus permeability ntawm lub substrate yuav tsum siab tshaj 500. Yog hais tias cov khoom siv cladding kuj yog sib nqus, qhov sib txawv ntawm permeability los ntawm cov khoom siv hauv paus yuav tsum loj txaus (xws li, npib tsib xee plating ntawm hlau). Thaum qhov kev sojntsuam nrog lub kauj ntawm cov tub ntxhais mos yog muab tso rau ntawm cov qauv mus kuaj, qhov ntsuas tau txiav tawm qhov ntsuas tam sim no lossis kuaj teeb liab. Cov khoom lag luam thaum ntxov siv lub ntsuas ntsuas ntsuas ntsuas qhov ntsuas qhov loj ntawm qhov induced electromotive quab yuam, thiab cov cuab yeej ua kom pom tseeb ntawm cov teeb liab thiab tom qab ntawd qhia qhov tuab ntawm txheej. Nyob rau hauv xyoo tas los no, kev tsim hluav taws xob hauv Circuit Court tau qhia txog cov thev naus laus zis tshiab xws li kev ruaj khov, theem ntsuas, ntsuas kub, thiab lwm yam, thiab siv magnetoresistance los hloov cov teeb liab ntsuas. Cov tsim kev sib xyaw ua ke kuj tseem siv tau, thiab microcomputer tau qhia, kom qhov ntsuas qhov tseeb thiab kev tsim tawm tau zoo dua qub (yuav luag qhov kev txiav txim ntawm qhov loj). Niaj hnub nimno magnetic induction thickness gauge muaj ib tug daws teeb meem ntawm 0.1um, ib tug tso cai yuam kev ntawm 1 feem pua, thiab ib tug ntau ntawm 10 hli. Lub hauv paus ntsiab lus sib nqus tuab tuaj yeem siv los ntsuas cov xim txheej ntawm cov hlau nto, txheej tiv thaiv ntawm cov plooj (porcelain) thiab enamel, txheej ntawm cov yas thiab roj hmab, txheej txheej electroplating ntawm ntau yam hlau tsis muaj hlau xws li nickel-chromium, thiab ntau yam. anti-corrosion txheej ntawm chemical thiab roj av industries.
