Kwiimeko ezininzi, eyona nto inkulu echaphazela ixesha lokuphila leintsimbi yokuthambisaincam liqondo lobushushu be-soldering.
Ngaphambi kokuphunyezwa ngokusesikweni kwemimiselo ye-RoHS (imiqathango kwizinto ezinobungozi) ngoJulayi 1, 2006, ukukhokela kwi-solder wire kuvunyelwe.Emva koko, ukusetyenziswa kwelothe (kunye nezinto ezinxulumene nazo) akuvumelekanga ngaphandle kwezi zixhobo zilandelayo kunye neenkqubo: izixhobo zonyango, ukubeka iliso kunye nezixhobo zokubona, izixhobo zokulinganisa kunye nezixhobo ngokukodwa kwiindawo zomkhosi kunye ne-aerospace kuquka i-automotive sensors (iinkqubo zokulawula iimoto kunye neemveliso ze-airbag. ), ishishini lothutho lukaloliwe, njl.
Eyona nto ixhaphakileyo yocingo lwe-alloy tin ibonakaliswe ngendawo yokunyibilika malunga ne-180 degrees.Indawo yokunyibilika yocingo oluqhelekileyo lwenkcenkce olungenayo i-alloy lumalunga nama-220 degrees.Ukwahlukana kweqondo lokushisa kwama-degrees angama-40 kuthetha ukuba ukwenzela ukugqiba okwanelisayosolderngokudibeneyo ngexesha elifanayo, kufuneka sandise ubushushu besikhululo sokuthengisela (ukuba ixesha lokuthengisa linyukile, kulula ukulimaza amacandelo kunye nebhodi ye-PCB).Ukunyuka kweqondo lokushisa kuya kunciphisa ubomi benkonzo yentsimbi ye-soldering kunye nokwandisa i-oxidation phenomenon.
Lo mfanekiso ulandelayo ubonisa umphumo wokunyuka kweqondo lokushisa kubomi benkonzo ye-soldering iron tip.Ukuthatha ama-degrees angama-350 njengexabiso lokubhekisela, xa izinga lokushisa linyuka ukusuka kuma-degrees angama-50 ukuya kuma-degrees angama-400, ubomi benkonzo yentsimbi ye-soldering buya kuncitshiswa ngesiqingatha.Ukwandisa ubushushu benkonzo yentsimbi ye-solder kuthetha ukuba ubomi benkonzo yentsimbi ye-soldering buyancipha.
Ngokubanzi, ubushushu be-soldering ye-alloy-free solder alloy bunconywa ukuba bube yi-350 ℃.Nangona kunjalo, umzekelo, ngenxa yokuba ubungakanani besixhobo sokunyuka kwe-01005 sincinci kakhulu, sincoma inkqubo yokuthengisa i-300-degree.
Ukubaluleka kokuchaneka
Kufuneka uhlolisise ubushushu obusebenzayo besikhululo sokuthambisa rhoqo, esingenako ukwandisa kuphela ubomi benkonzo yencam yentsimbi, kodwa kwakhona ukuphepha ubushushu obugqithisileyo okanye ubushushu obuphantsi be-soldering xa uthengisa iimveliso.
Zombini zinokubangela iingxaki ngexesha le-soldering:
·Ubushushu obugqithisileyo: abaninzi abaqhubi abaqeqeshiweyo baya kucinga ukuba kuyimfuneko ukunyusa iqondo lobushushu be-solder ukuze balungise ingxaki xa befumanisa ukuba i-solder ayikwazi ukunyibilika ngokukhawuleza.Nangona kunjalo, ukwandisa iqondo lokushisa kuya kwenza ubushushu kwindawo yokufudumeza ibe phezulu kakhulu, okuya kukhokelela kwi-warping ye-pad, ukushisa okugqithisileyo kwe-solder, ukonakalisa i-substrate kunye ne-solder joints kunye nomgangatho ombi.Ngelo xesha, iya kwandisa i-oxidation yentsimbi ye-soldering kwaye ibangele umonakalo kwi-tip ye-soldering iron.
·Ubushushu obuphantsi kakhulu bokusoda bunokukhokelela kwixesha elide lokuhlala kwinkqubo yokuthengisela kunye nokudluliselwa kobushushu okumandundu.Oku kuya kuchaphazela amandla okuvelisa kunye nomgangatho weendawo ezibandayo ze-solder.
Ngoko ke, umlinganiselo ochanekileyo wokushisa uyimfuneko ukuze ufumane ubushushu bokulungiselela i-solder.
Ixesha lokuposa: Apr-18-2022