Soldering hlau welding kub tus qauv_Txoj kev tsom xam ntawm hluav taws xob soldering hlau vuam
1. Lub hauv paus ntsiab lus ntawm phau ntawv vuam
Cov txheej txheem ntawm phau ntawv qhia kev sib txuas yog hloov cov cua sov los ntawm qhov kawg ntawm cov hlau soldering thiab yaj lub vuam kom txuas cov welded qhov chaw (cov khoom siv hluav taws xob, thiab lwm yam) rau cov ntaub qhwv (welded qhov chaw).
Kev tuav vuam cov ntsiab lus: fais fab mov (soldering chaw nres tsheb los yog soldering hlau), cua sov lub cev (kub kub tub ntxhais), soldering hlau taub, solder, vuam qhov chaw, thiab lwm yam .;
2. Kev paub txog cov hlau lead-dawb soldering
Yav dhau los solder yog ib tug tin-lead alloy, xws li 63/37 (63 feem pua tin, 37 feem pua cov hmoov lead), nrog rau qhov melting point ntawm 183 degrees. Vim muaj cov tshuaj lom ntawm cov hlau lead hauv ib puag ncig, ROHS thiab lwm cov kev cai lij choj hais tias nws yog txwv tsis pub siv hauv cov khoom siv hluav taws xob. Yog li ntawd muaj lwm txoj hauv kev uas tsis muaj hlau lead.
Lead-free solder txheeb ze rau cov hlau lead:
1. Lub melting point nce li ntawm 34-44 degrees; 2. Cov ntsiab lus tin nyob rau hauv lub solder nce; 3. Lub peev xwm tinning tsis zoo (tsis zoo solderability), thiab solder diffusion ntawm lead-free solder yog pluag, thiab diffusion cheeb tsam yog yuav luag 1/ ntawm cov eutectic solder 3.
3. phau ntawv soldering kub mis
Qhov zoo tshaj plaws kub rau soldering yog lub melting point ntawm solder siv ntxiv rau 50 degrees. Cov txheej txheem kub ntawm cov hlau nplaum, vim qhov loj ntawm qhov sib txuas, lub zog thiab kev ua haujlwm ntawm cov hluav taws xob soldering hlau, hom solder thiab hom hlau, nws raug nquahu kom ntxiv X degrees (feem ntau 100) rau kub saum toj no.
Ntawd yog: soldering hlau taub kub=solder melting point plus 50 plus X (poob). Xws li: txhuas solder 63/37 qhov kub thiab txias: txog 183 ntxiv rau 50 ntxiv rau 100=333, txhuas-dawb tin tooj liab: 227 ntxiv rau 50 ntxiv 100=377 degrees.
Qhov luaj li cas ntawm cov pob qij txha ntawm cov khoom sib txawv, cov khoom sib txawv, qhov sib txawv thiab cov cwj pwm kev ua haujlwm, thiab lwm yam, ntawm no X hloov tau zoo heev, yog li qhov kub ntawm soldering yog siv los ntawm 350-450.
4. Txoj cai ntawm soldering hlau taub hau poob
Cov qauv ntawm lub taub hau ntawm cov hlau taub hau yog roughly: tooj liab-hlau plating txheej-tin plating txheej. Thaum soldering thiab cua sov, lub cev thiab tshuaj cov tshuaj tiv thaiv yuav tshwm sim ntawm cov hlau plating txheej thiab cov tin nyob rau hauv lub solder, yog li ntawd cov hlau yog yaj thiab corroded, thiab cov txheej txheem no accelerates nrog nce kub.
Yog li ntawd, thaum lub sij hawm soldering tsis muaj hlau lead, vim hais tias lub soldering kub feem ntau nce, cov ntsiab lus tin nyob rau hauv lub solder kuj nce ho, yog li ntawd lub neej ntawm lub soldering hlau ntsis txo sharply.
5. Tej teeb meem ntawm cov hlau lead-dawb phau ntawv soldering
1. Thaum siv qhov kub thiab txias, nws yooj yim rau kev puas tsuaj rau cov khoom;
2. Yog hais tias lub thermal rov qab ntawm cov hlau soldering los yog qhov chaw nres tsheb tsis zoo, nws yog ib qho yooj yim kom muaj cov vuam cuav thiab vuam tsis tseeb, thiab qhov tsis xws luag yuav nce;
3. Cov oxidation poob ntawm cov hlau taub hau nce;
6. Kev tiv thaiv ib puag ncig rau kev siv cov hlau lead-free phau ntawv soldering
1. Siv cov hlau nplaum tshwj xeeb uas tsis muaj cov hlau lead (nws yog plated nrog cov hlau lead-dawb tin, thiab cov hlau plating txheej yog tsim nyog thickened kom ncua corrosion thiab ntev lub neej yam tsis muaj kev cuam tshuam los ntawm tshav kub conduction);
2. Siv lub chaw nres tsheb uas tsis muaj hlau lead-dawb soldering (lub zog siab, kub ceev rov qab, ua kom qhov kub thiab txias, thiab tuaj yeem siv qhov kub thiab txias rau vuam);
7. Kev paub txog qhov chaw nres tsheb tsis muaj hlau lead
Nws tuaj yeem pom los ntawm cov txheej txheem vuam uas cov txheej txheem vuam ua tiav los ntawm kev hloov cov cua sov. Yog li ntawd, lub cev cua sov yuav tsum muaj cov khoom siv hluav taws xob zoo dua thaum lub sij hawm tsis muaj cov hlau lead, uas yuav tsum muaj qhov chaw nres tsheb los yog cov hlau soldering kom muaj zog ntau dua thiab rov ua kom sov sai dua.
Lub zog ntawm cov hlau lead-dawb soldering chaw uas nquag siv hauv khw yog siab dua 90W. Piv nrog rau yav dhau los 60W soldering chaw nres tsheb los yog ib leeg soldering hlau, thermal efficiency thiab thermal rov qab tau nce ntau, yog li thaum soldering tib yam khoom, qhov yuav tsum tau soldering kub yuav qis dua. Txog li 10-30 degrees, thiab ruaj khov dua.
