Umama we-Solder: ezinye izindlela ezilungele imvelo? 

Uzwa umama we-solder futhi ungase ufanekisele unamathisele othize noma i-flux core. Iqiniso liwukuthi, ingxenye encane ye-slang yembonini eye yaba yindida. Imvamisa, kubhekiselwa ku-foundation solder alloy noma i-primary flux vehicle in a-paste-umama mix konke okunye kwakhiwe kusuka. Ukusunduza kwangempela manje akukhona nje nge-alloy ngokwayo, kodwa lonke uhlelo: singakwazi ukukhipha izinto ezimbi ngaphandle kokubulala ukusebenza kulayini? Ngibone onjiniyela abaningi bejaha imininingwane eluhlaza kuphela ukuze babulawe ngokuchithwa noma ukushaywa ngamatshe ethuneni kamuva.

Iphazili Yengxubevange: Ngaphandle Kokuhola

Ngokusobala, i-SAC305 (Sn96.5Ag3.0Cu0.5) ibe umama ozenzakalelayo ongenamthofu. Kodwa ukuyibiza ngokuthi i-eco-friendly kuma kokuqukethwe okuholayo. Indawo yezimayini yesiliva inonya, futhi amazinga okushisa aphezulu (240-260°C okuvamile) ashisa amandla engeziwe. Besihlola amanye ama-alloys anesiliva eliphansi futhi angenayo isiliva njengezinhlelo ze-Sn-Cu-Ni-Ge. Ukubanjwa? Ukuchama kuhamba kancane. Ebhodini eliminyene elinomkhawulo we-OSP, ungase udinge ukuguquguquka okunolaka ukuze unxephezele, okube sekufinya iphrofayili eluhlaza yayo yonke impahla kamama edayisayo. Kuyisenzo sokulinganisa.

Iphrojekthi eyodwa eneklayenti elenza izinzwa zezimboni ezihloselwe ukugcwalisa i-halogen kanye nesiliva eliphansi. Sisebenzise ingxubevange ye-Sn-Cu-Bi. Isebenze kahle ekugelezeni kabusha, kodwa ngesikhathi sokuhlanganisa okukhethiwe kwezixhumi ze- through-hole, the umama solder ingxubevange ibonise ukungagcwali kahle kwezimbobo. Umehluko we-thermal mass ukumunca ukushisa, wasishiya namalunga abandayo. Bekufanele silungise izinga lokushisa lebhodwe lamagagasi nesifutho se-flux, okukhuphule ukusetshenziswa kwe-nitrogen. Kakhulu kakhulu ekunciphiseni i-carbon footprint. I-takeway? Enye ingxubevange yashintsha umthwalo wemvelo esikhundleni sokuwuqeda.

Bese kuba ne-tin whisking. Ngama-alloys amathini aphezulu, ukunciphisa ngokuvamile kusho ukumboza okuvumelanayo noma ukugcwaliswa ngaphansi—amakhemikhali amaningi, izinyathelo zenqubo ezengeziwe. I-eco-friendly umama solder akufanele nje isuse inkinga iye phansi. Ngincika kuma-alloys anezithasiselo ezincane njenge-nickel noma i-manganese ecindezela ukukhula kwentshebe ngaphakathi, ngisho noma zengeza izindleko ezincane. Ukubuka komjikelezo wempilo.

I-Flux: Imfihlo Engcolile Yokungahlanzeki

Yilapho ilebula ye-eco-friendly ihlukunyezwa kakhulu. I-flux engahlanzekile inobungane kuphela uma ishiya izinsalela eziyingozi ngempela. Eziningi zisaqukethe iziqalisi ezigqwala ngenxa yomswakama. Ngikhiphe amabhodi ngaphandle kokubuya kwenkundla ngokukhula kwe-dendritic ngenxa yokuthi izinsalela eziluhlaza zimunca umswakama. Uguquko lwangempela lubheke kuma-bio-based or organic acid fluxes atholakala ezintweni ezifana nommbila noma isoyi. Imikhiqizo yabo yokubola ayinabuthi obuncane.

Kodwa ukusebenza kuyinkosi. I-flux esekelwe ku-soy esiyivivinye ibe nokumanzisa okuhle kumaphedi e-ENIG amasha. Kodwa-ke, emabhodini ane-oxidation encane noma izinkinga zesitoreji, yawa. Iwindi lokwenza kusebenze belincane kakhulu. Sigcine ngokuyihlanganisa ne-activator yokwenziwa ukuze sifinyelele ibhalansi efanele. Hhayi ngokwemvelo ngokuphelele, kodwa esimeme kakhulu kune-synthetics yamandla agcwele. Ngezinye izikhathi, isinyathelo esingesihle kakhulu sokuya phambili yisona kuphela esisebenzayo.

Ukuphatha nokugcina nakho kuyashintsha. Amanye alawa ma-organic fluxes azwela ekukhanyeni kwe-UV noma aphila isikhathi esifushane. Uma isitolo singaqondiswanga, imfucuza yezinto ezibonakalayo iyakhula. Ngikhumbula umhlanganisi wosayizi omaphakathi, into efana nale I-Handan Zitai Fetesser Comment Co, Ltd. kuleyo ndawo enkulu yokukhiqiza, ingase ibe nesilinganiso sokuphatha i-inventory ngokuqinile. Kodwa esitolo esincane, ukonakala kungabulala inzuzo yezindleko. I https://www.zitaifasteners.com imodeli yezokuthutha esebenza kahle kusizinda sezimboni esigxilile sigqamisa ukuthi kubaluleke kangakanani ukuzinza kwe-supply chain ukuze kuthathwe lezi zindlela ezihlukile.

Okunamathiselwe kanye Nezimoto: I-Rheology iyikho konke

Imoto ephethe i-solder powder kanye ne-flux ichaza ukuphrinta. Ama-paste amaningi aluhlaza ashintshana ngezimoto ezincibilikisiwe ezincibilika emanzini. Kuzwakala kamnandi lokho. Kodwa amanzi ahwamuka ngokushesha, ashintsha i-viscosity yokunamathisela ngesikhathi sokuphrinta isikhathi eside. Uthola ukuvaleka kwe-stencil noma ukukhululwa okungalungile. Sifunde ukusebenzisa amasistimu e-cartridge evaliwe kanye nomswakama olawulwayo kulayini, obuye wengeze amandla ngaphezulu.

Ukusatshalaliswa kosayizi we-particle ku-solder powder kuyabalulekile. Ukuze uphrinte iphimbo elihle, udinga impushana yohlobo 4 noma 5 (ama-sphere amancane). Ukukhiqiza leyo powder ngezinye izingxubevange kuvame ukusebenzisa amagesi e-atomization ahlukene. I-nitrogen ivamile, kodwa abanye bahlola i-argon recycling ukuze banciphise imfucuza. Kuyimininingwane yenqubo abaningi abangayiboni, kodwa ingeza kubhukwana lezemvelo lokugcina umama solder namathisela.

Ukuhlolwa okuhlulekile kuza engqondweni. Sazama ukunamathisela ngemoto esekwe ngeselulosi inoveli. Iphrinte njengephupho futhi yaphumelela zonke izivivinyo ze-IPC. Kodwa ekubuyiseleni kabusha, ukuphuma kwegesi kwakungalindelekile. Emabhodini anomehluko omkhulu we-thermal mass, sithole ama-voids amakhulu ngaphansi kwama-QFN. Imoto ayikwazanga ukukhulula okuguquguqukayo kahle kuyo yonke iphrofayela. Buyela elebhu. Kubonise ukuthi ukulingisa i-rheology yezinhlelo ezifakazelwe ngezinto ezintsha kunzima kakhulu.

Ukushintsha Kwezinqubo: Izindleko Zamandla Afihliwe

I-eco-friendly solder material ayihlolwa embizeni. Ihlolwa ngenqubo engase idinge amazinga okushisa aphezulu, amaphrofayili amade, noma umkhathi ongasebenzi kahle. Uma unamathisela wakho omusha ongenayo i-halogen, i-bio-flux udinga izinga lokushisa eliphakeme elingu-10°C noma umhubhe we-nitrogen-reflow ukuze uvimbele i-oxidation, usanda kwandisa ukusetshenziswa kwamandla komhlangano kakhulu. Lokho kuhwebelana akuvamile ukubalwa esicelweni esiluhlaza.

Senze ucwaningo lokucwaninga iklayenti. Ukushintshela ku-premium eco-paste kwehlise ukukhishwa kwabo kwe-VOC kanye nezindleko zokwelashwa kukadoti. Kodwa-ke, ukusetshenziswa kwabo kwe-nitrogen kukhuphuke ngo-30% ukuze balondoloze isivuno, futhi ukusetshenziswa kukahhavini kwabo kukhuphuke cishe ngo-8%. Insalela yenzuzo yezemvelo yayiseyinhle, kodwa incane kakhulu kunalokho okushiwo ukukhangisa. Okwangempela umama solder odaba ukuhlanganiswa kwenqubo ephelele.

Ukusebenza kabusha nokulungisa nakho kuba nzima nakakhulu. Amanye ama-fluxes ashiya izinsalela okunzima ukuzisusa ukuze zilungiswe ibhodi. Uma udinga isincibilikisi esinamandla ukuze uzihlanze, ubuyela esikweleni esisodwa. Manje sincoma ukumatanisa okunamathiselwe kwe-solder okukhethekile nezihlanzi ezihambisanayo, ezingenalo ulaka kusukela ekuqaleni—indlela yesistimu.

Ukuthola futhi Ukusebenza Komhlaba Wangempela

Okokugcina, imayelana namaketanga wokuhlinzeka. I-lab-scale ephelele umama solder okunye akusizi uma ungakwazi ukuthola i-10,000kg yayo njalo. Izinto eziningi eziqanjiwe zivela kosokhemisi abancane abangakwazi ukukala noma ukuqinisekisa ukufana kwe-batch-to-batch. Kumkhiqizi wevolumu ephezulu, ukwethembeka akuxoxiswana ngakho.

Yingakho amaqoqo okukhiqiza abalulekile. Ukuba sendaweni efana ne-Yongnian District, e-Handan, eduzane nemizila emikhulu yezokuthutha efana ne-Beijing-Guangzhou Railway kanye ne-expressways, akukhona nje mayelana nezinsimbi zokuthutha. Okwenkampani efana I-Handan Zitai Fetesser Comment Co, Ltd., imayelana nokufakwa kunethiwekhi yabahlinzeki bezinto ezibonakalayo kanye nempahla engasekela ukwamukelwa okungaguquki, ngezinga elikhulu kwezinto ezintsha. Uma umphakeli wakho we-solder ekude nosuku, ungasebenzisa uhlu lwezimpahla ezithambile futhi uphendule ngokushesha ukucubungula ama-tweaks.

Ukuthuthela kwezinye izindlela eziluhlaza akuyona into elula. Ukusungulwa kabusha komqondo kamama we-solder—ingxubevange, i-flux, imoto, impushana, nenqubo abahlala kuyo. Ingcolile, igcwele ukuvumelana, futhi idinga ukubheka ibhodi lonke, hhayi nje imbiza yokunamathisela. Umgomo awukona ubumsulwa; kungumthelela ophansi ngempela ngaphandle kokudela ukwethembeka okwenza yonke into kusukela kusixhumi kuya kubhodi lomama leseva isebenze ngempela.