Maemo a hlokahalang bakeng saho kopanya PCBmapolanka a potoloho

1.The weldment e tlameha ho ba le weldability e ntle

Seo ho thoeng ke solderability se bua ka ts'ebetso ea motsoako oo lisebelisoa tsa tšepe li lokelang ho kenngoa le solder li ka etsa motsoako o motle mocheso o loketseng. Ha se litšepe tsohle tse nang le weldability e ntle. Litšepe tse ling, tse kang chromium, molybdenum, tungsten, joalo-joalo, li na le ts'ebetso e fokolang haholo ea ho cheseha; litšepe tse ling, joalo ka koporo, koporo, joalo-joalo, li na le matla a ho chesehela hantle. Nakong ea welding, mocheso o phahameng o etsa hore filimi ea oxide e thehoe holim'a tšepe, e amang ho cheseha ha thepa. E le ho ntlafatsa solderability, holim'a tin plating, silevera plating le mehato e meng e ka sebelisoa ho thibela oxidation ea holim'a lintho tse bonahalang.

2.Bokaholimo ba weldment bo tlameha ho bolokoa bo hloekile

E le ho finyella motsoako o motle oa solder le weldment, sebaka sa welding se tlameha ho bolokoa se hloekile. Esita le bakeng sa li-wellds tse nang le weldability e ntle, lifilimi tsa oxide le litšila tsa oli tse kotsi ho kolobisa li ka hlahisoa holim'a metsi ka lebaka la ho boloka kapa ho silafala. Filimi ea litšila e tlameha ho tlosoa pele ho welding, ho seng joalo boleng ba welding bo ke ke ba tiisetsoa. Likarolo tse bonolo tsa oxide holim'a tšepe li ka tlosoa ka ho phalla. Libaka tsa tšepe tse nang le oxidation e matla li lokela ho tlosoa ka mekhoa ea mechine kapa ea lik'hemik'hale, tse kang ho senya kapa ho kha.

3.Sebelisa phallo e nepahetseng

Mosebetsi oa flux ke ho tlosa filimi ea oxide e holim'a tjheseletsa. Mekhoa e fapaneng ea ho tjheseletsa e hloka li-fluxes tse fapaneng, tse kang nickel-chromium alloy, tšepe e sa hloekang, aluminium le lisebelisoa tse ling. Ho thata ho solder ntle le phallo e khethehileng e khethehileng. Ha ho tjheseletsa lihlahisoa tsa elektroniki tse nepahetseng joalo ka liboto tsa potoloho tse hatisitsoeng, molemong oa ho etsa hore welding e ts'ehehe ebile e tsitsitse, hangata ho sebelisoa flux e thehiloeng ho rosin. Ka kakaretso, joala bo sebelisoa ho qhaqha rosin ka metsi a rosin.

4. The weldment e tlameha ho futhumatsoa ho mocheso o loketseng

Nakong ea ho cheselletsa, mosebetsi oa matla a mocheso ke ho qhibiliha solder le ho futhumatsa ntho ea ho cheselletsa, e le hore thini le liathomo tse etellang pele li fumane matla a lekaneng a ho phunyeletsa ka holim'a lesela la kristale holim'a tšepe e lokelang ho etsoa ho etsa motsoako. Haeba mocheso oa welding o le tlase haholo, o tla senya ho kenella ha liathomo tsa solder, ho etsa hore ho se ke ha khoneha ho etsa motsoako, 'me ho bonolo ho theha solder ea bohata. Haeba mocheso oa tjheseletsa o phahame haholo, solder e tla be e le sebakeng se seng sa eutectic, e potlakisa ho senyeha le sekhahla sa volatilization ea flux, e leng se etsang hore boleng ba solder bo fokotsehe, 'me maemong a boima, bo ka etsa hore liphahlo tse hatisitsoeng. boto ea potoloho ho oela. Se lokelang ho hatisoa ke hore ha se feela solder e lokelang ho futhumala ho qhibiliha, empa weldment e boetse e lokela ho futhumala mocheso o ka qhibilihisang solder.

5. Nako e loketseng ea ho tjheseletsa

Nako ea welding e bolela nako e hlokahalang bakeng sa liphetoho tsa 'mele le tsa lik'hemik'hale nakong ea ts'ebetso eohle ea welding. E kenyelletsa nako ea hore tšepe e chesetsoe hore e fihle mocheso oa ho cheselletsa, nako ea ho qhibiliha ha solder, nako ea hore phallo e sebetse le nako ea hore motsoako oa tšepe o thehoe. Ka mor'a hore mocheso oa welding o khethoe, nako e loketseng ea ho cheselletsa e lokela ho khethoa ho latela sebōpeho, tlhaho le litšobotsi tsa likarolo tse lokelang ho chesetsoa. Haeba nako ea welding e le telele haholo, likarolo kapa likarolo tsa welding li tla senyeha habonolo; haeba nako ea ho tjheseletsa e le khutšoanyane haholo, litlhoko tsa welding li ke ke tsa finyelloa. Ka kakaretso, nako e telele ea hore lenonyeletso le leng le le leng la solder le chesetsoe ha le fete metsotsoana e 5.