Ntev npaum li cas hluav taws xob soldering hlau yuav tsum tau ua kom sov
Lub 60W hluav taws xob soldering hlau muaj lub zog siab, tab sis feem ntau nws yuav tsum tau preheated rau 3-5 feeb. Txawm hais tias koj yuav zoo li tau kub thiab tawm cov pa taws dawb, tej zaum koj yuav tsis tau mus txog qhov melting point ntawm solder tsis tau. Lub sij hawm preheating ntawm hluav taws xob soldering hlau kuj muaj feem xyuam rau kev siv ib puag ncig. Nyob rau hauv ib puag ncig uas muaj cua kub thiab tsis kub, lub sij hawm preheating yuav ntev dua. Nws raug nquahu kom siv qee qhov kev tiv thaiv (xws li ntxiv lub tes tsho) rau cov hluav taws xob soldering hlau nyob rau hauv qis kub thiab cua kub ib puag ncig kom ntseeg tau tias nws tuaj yeem txuas ntxiv rau cov cua sov thiab ncav cuag qhov kub thiab txias.
Lub tshuab hluav taws xob tshiab yuav muaj pa taws me ntsis thiab tsw ntxhiab thaum siv thawj zaug. Muaj ib txheej ntawm cov xim oxidation nyob rau sab saum toj ntawm cov hlau soldering, uas yuav tsum tau maj mam muab tshem tawm ua ntej siv. Rau thawj zaug siv, nws yog ib qho tsim nyog yuav tsum tau ua kom tag nrho cov khoom noj rau lub taub hau hlau, kom nws tuaj yeem nqus tau thiab welded.
Vuam txoj cai ntawm hluav taws xob soldering hlau
Tin welding yog ib qho kev tshawb fawb, thiab lub hauv paus ntsiab lus ntawm hluav taws xob soldering yog kom sov thiab yaj cov khoom siv hlau los ntawm cov hlau rhuab. Nrog kev pab los ntawm soldering flux, nws ntws mus rau hauv cov hlau yuav tsum tau welded thiab tsim ib tug ruaj khov thiab txhim khu kev qha vuam taw tes tom qab txias.
Thaum lub solder yog ua los ntawm tin txhuas alloy thiab vuam nto yog ua los ntawm tooj liab, lub solder thawj wets lub vuam nto. Nrog rau qhov tshwm sim ntawm ntub dej tshwm sim, lub solder maj mam diffuses ntawm cov hlau tooj, tsim ib tug adhesion txheej nyob rau hauv kev sib cuag nto ntawm lub solder thiab cov hlau tooj liab, ua rau ob qho tib si khov kho. Yog li ntawd, soldering yog ua tiav los ntawm peb lub cev thiab tshuaj txheej txheem: wetting, diffusion thiab metallurgy.
1. Kev ntub dej: Cov txheej txheem ntub dej yog hais txog kev siv lub zog capillary kom diffuse lub melted solder raws lub zoo concave convex thiab crystalline qhov khoob ntawm qhov chaw ntawm lub hauv paus hlau, tsim ib txheej adhesion rau ntawm qhov chaw ntawm lub hauv paus hlau welded, ua tus txheej txheem wetting. solder thiab cov atoms ntawm lub hauv paus hlau nyob ze rau ib leeg, ua tiav qhov kev ncua deb ntawm atomic gravity ua.
Ib puag ncig tej yam kev mob uas ua rau ntub dej: Qhov saum npoo ntawm cov khoom siv welded yuav tsum huv si thiab tsis muaj oxides los yog cov pa phem.
Daim duab piv txwv: Muab dej tso rau ntawm nplooj nplooj los ua cov dej ntws tawm txhais tau hais tias dej tsis tuaj yeem moisten cov paj. Tso dej rau ntawm cov paj rwb thiab nws yuav nkag mus rau hauv cov paj rwb, uas txhais tau hais tias dej tuaj yeem moisten cov paj rwb.
2. Diffusion: Nrog rau cov txheej txheem ntub dej, qhov sib txuam diffusion tshwm sim ntawm cov solder thiab lub hauv paus hlau atoms pib tshwm sim. Feem ntau, cov atoms nyob rau hauv lub thermal vibrational lub xeev nyob rau hauv lub lattice lattice, thaum kub nce. Kev siv zog ntawm atomic kev ua haujlwm ua rau cov atoms nyob rau hauv lub melted solder thiab lub hauv paus hlau hla kev sib cuag nto thiab nkag mus rau hauv lub lattice ntawm ib leeg. Qhov ceev thiab tus naj npawb ntawm atoms txav nyob ntawm qhov kub thiab txias thiab lub sijhawm.
3. Metallurgical bonding: Vim muaj kev sib nrig sib txawv ntawm cov solder thiab lub hauv paus hlau, ib qho nruab nrab txheej - ib tug hlau compound - yog tsim los ntawm ob lub hlau. Txhawm rau kom tau txais cov pob qij txha zoo, cov hlau sib txuas yuav tsum tau tsim los ntawm cov welded puag hlau thiab cov hlua khi kom ua tiav lub zog hlau metallurgical kev sib raug zoo ntawm lub hauv paus hlau.
