Qhov no yog li cas koj tuaj yeem kuaj qhov tsis kam ntawm cov hlau soldering.
Hluav taws xob soldering hlau yog cov cuab yeej tseem ceeb rau kev tsim hluav taws xob thiab kev kho hluav taws xob, feem ntau yog siv rau cov khoom siv thiab cov xov hlau. Nws tuaj yeem muab faib ua hluav taws xob hluav taws xob sab hauv hluav taws xob thiab hluav taws xob sab nraud hluav taws xob hluav taws xob hluav taws xob raws li cov qauv siv tshuab, tsis siv lub tshuab hluav taws xob thiab cov tshuab nqus hluav taws xob raws li kev ua haujlwm, thiab lub zog hluav taws xob hluav taws xob hluav taws xob thiab hluav taws xob qis hluav taws xob raws li qhov sib txawv. lub hom phiaj.
Kev ntsuas hluav taws xob hluav taws xob muaj peb ntu: kev sim hauv av (txias / kub lub xeev), kev ntsuas hluav taws xob, thiab kev ntsuas tam sim no.
1. Kev ntsuam xyuas hauv av ntawm hluav taws xob soldering hlau hauv lub xeev txias:
Thaum tsis muaj hwj chim, txuas ib kawg ntawm lub multimeter sojntsuam mus rau hauv av davhlau ya nyob twg ntawm lub hwj chim plug thiab lwm kawg mus rau lub ntsis ntawm lub soldering hlau mus kuaj cov ntaub ntawv;
2. Grounding resistance test ntawm hluav taws xob soldering hlau nyob rau hauv cov cua sov lub xeev:
Txuas lub hwj chim, tig rau ntawm cov hlau soldering, thiab txuas ib kawg ntawm lub multimeter sojntsuam mus rau qhov chaw nres tsheb hauv av ntawm lub qhov (socket), thiab lwm qhov kawg rau lub rooj tsavxwm kuaj uas muaj kev sib cuag nrog cov hlau soldering. Ntsuas cov txiaj ntsig;
3. Kev ntsuas hluav taws xob xau thiab qhov ntsuas tam sim no ntawm hluav taws xob soldering hlau zoo ib yam li cov qauv ntsuas kev tiv thaiv. Nws yuav tsum tau muab sau tseg tias lub multimeter yuav tsum tau hloov lub zog los yog kho qhov chaw ntawm lub multimeter sojntsuam hlau thaum ntsuas tam sim no.
solder
Solder yog ib hom fusible hlau uas tuaj yeem txuas cov khoom sib txuas ua rau cov ntsiab lus sib txuas ntawm cov ntawv luam tawm. Tin (Sn) yog ib tug mos mos thiab ductile silver dawb hlau nrog ib tug melting point ntawm 232 degree. Nws muaj cov tshuaj lom neeg ruaj khov ntawm chav tsev kub, tsis yooj yim oxidized, tsis poob nws cov xim hlau, thiab muaj zog tiv thaiv atmospheric corrosion. Lead (Pb) yog ib lub teeb ci xiav dawb hlau uas muaj qhov melting point ntawm 327 degree. High purity lead muaj zog tiv thaiv atmospheric corrosion thiab zoo tshuaj stability, tab sis muaj teeb meem rau tib neeg noj qab haus huv. Ntxiv ib qho kev faib ua feem ntawm cov hlau lead thiab ib qho me me ntawm lwm cov hlau rau tin tuaj yeem tsim cov khoom siv uas tsis tshua muaj melting point, zoo fluidity, muaj zog adhesion rau cov khoom thiab cov xov hlau, siab mechanical zog, zoo conductivity, tsawg oxidation, zoo corrosion kuj, thiab ci thiab zoo nkauj solder pob qij txha. Nws yog feem ntau hu ua solder. Soldering tuaj yeem muab faib ua 15 hom raws li tus nqi ntawm cov ntsiab lus tin thiab impurities
Cov tshuaj muaj pes tsawg leeg tau muab faib ua peb theem: S, A, thiab B. Hlau soldering feem ntau yog siv hauv phau ntawv vuam. (Tseem muaj ib puag ncig tus phooj ywg cov khoom siv lead-free soldering feem ntau siv niaj hnub no)
