I-Brazing Ingcweti Ethambile Yokujoyina Ngokunemba

I-Brazing ayincibiliki isisekelo sensimbi kodwa izuza ukujoyina ngokuncibilikisa insimbi yokugcwalisa i-low-melting-point ukuze kugcwaliswe izikhala. Ifaka ama-weld ayisicaba kanye nokuguqulwa okuncane, okuyenza ifanelekele izingxenye ezinembayo zokushisela, izinto ezingafani, nezakhiwo eziyinkimbinkimbi. Ibalulekile emikhakheni efana ne-electronics, i-aerospace, kanye nemishini yezokwelapha. Ngokwendawo yokuncibilika yensimbi yokugcwalisa i-brazing, i-brazing ihlukaniswe izigaba ezimbili: i-soft brazing kanye ne-hard brazing.

(I) I-Soft Brazing: "Ukujoyina Okuncane" Kwezingxenye Ze-Electronic

I-Soft brazing isebenzisa insimbi yokugcwalisa enendawo yokuncibilika engaphansi kuka-450°C. Insimbi yokugcwalisa i-brazing evame ukusetshenziswa i-tin-lead alloy (kancane kancane ithathelwa indawo yingxube ye-tin-free tin). I-Flux isetshenziswa ngesikhathi sokushisela ukususa amafilimu e-oxide nokunciphisa ukungezwani kwendawo. Ifanele ukuhlanganiswa okunembayo kwezingxenye ze-elekthronikhi, amabhodi wesekethe, namajoyinti amapayipi amanzi, phakathi kwawo i-soldering iwubuchwepheshe obujwayelekile bokubhuqa obuthambile.

1. I-Soldering: "Ikhono Eliyisisekelo" Lokushisela Ibhodi Lesifunda

Isimiso: I-ayini ehlanganisiwe ishisa ucezu lokusebenza (izinga lokushisa elingu-250-350°C), incibilikisa ucingo lukathayela olungenamthofu (iphoyinti elincibilika lilinganiselwa ku-227°C). Ngaphansi kwesenzo se-flux, i-tin encibilikisiwe igcwalisa igebe phakathi kwezikhonkwane zengxenye kanye namapulangwe ebhodi lesifunda, okwenza i-solder joint ngemva kokupholisa.

Amaphuzu Okusebenza:

Ukuhlanza Ngaphambi Kokushisela: Sebenzisa i-sandpaper ukuze upholise izikhonkwane zengxenye namaphedi ukuze ususe izingqimba ze-oxide; sula ibhodi lesifunda ngotshwala ukuze ususe amabala amafutha futhi ugweme i-solder ebandayo.

I-Heating Technique: Okokuqala, letha ithiphu lensimbi yokunamathisela lixhumane nendawo yokusebenza (ukuhlangana kwephini kanye nephedi). Ngemuva kokushisa imizuzwana engu-1-2, yondla ucingo lwethini. Gwema ukushisisa ngokuqondile i-tin wire, okungase kubangele "i-cold soldering" (i-tin encibilikisiwe ihluleka ukumanzisa ngokugcwele ucezu lokusebenza).

I-Solder Joint Control: Inani lezintambo zikathayela kufanele "lanele ukugcwalisa igebe ngaphandle kokuchichima." I-solder joint kufanele ibe "conical." Unganyakazi ingxenye ngaphambi kokupholisa ukuze uvimbele ukuphuka kwamalunga e-solder.

(II) I-Hard Brazing: "Isiqinisekiso Esinokwethenjelwa" Sezingxenye Zokunemba Amandla Aphezulu

Ukubhula okuqinile kusebenzisa insimbi yokugcwalisa enendawo yokuncibilika engaphezu kuka-450°C. Izithako ezisetshenziswa kakhulu zokubopha ingxubevange ye-copper-zinc (i-brass brazing filler) kanye ne-alloy-based alloy (isihlungi se-silver brazing). Ifaka izinga lokushisa eliphezulu lokushisela namandla aphezulu e-weld, okuyenza ifanelekele ukushisela izingxenye ezinembayo ezinamandla amakhulu njengamathuluzi okusika, izishintshi zokushisa, nama-aero-engine blades.

Amaphuzu Okusebenza: Shisisa isisekelo sensimbi ngaphambi kokushisela (izinga lokushisa elingu-300-500 ° C) ukuze uqinisekise ukugeleza okugcwele kwensimbi yokugcwalisa i-brazing; sebenzisa i-flux efana ne-borax ne-boric acid ukuze ususe ifilimu ye-oxide endaweni yensimbi yesisekelo; yenza ukwelashwa okupholisa okunensayo ngemva kokushisela (isb., ukubeka ebhokisini lokufakelwa) ukuze kuvinjelwe imifantu ebangelwa ukuhluka kwezinga lokushisa ngokweqile.

(III) Isu Lokukhetha kanye Nemikhuba Yokuthuthukisa Yezindlela Zokushisela

Ebhekene nezindlela ezihlukahlukene zokushisela, indlela yokukhetha ubuchwepheshe obufanele ngokuvumelana nezidingo zangempela kuyisihluthulelo sokuthuthukisa ikhwalithi ye-welding nokusebenza kahle. Ngasikhathi sinye, ngokuthuthukiswa kobuchwepheshe bezimboni, ubuchwepheshe be-welding bubuye buguqukele "kubuhlakani kanye nokwenza luhlaza."

(IV) Izinto Eziyinhloko Zokukhetha Indlela Yokushisela

I-Base Metal Characters: Ngensimbi enekhabhoni ephansi, kuqala kunikezwa i-SMAW ne-CO₂ welding; ngensimbi engagqwali, i-TIG welding kanye ne-laser welding iyathandwa; kuma-alloys e-aluminium, i-AC TIG welding ikhethiwe; ezingxenyeni ze-elekthronikhi, kusetshenziswa i-soldering.

Izidingo Zomkhiqizo: Ukuze uthole izingxenye ezinembayo (njengezingxenye ze-aerospace), i-laser welding kanye ne-TIG welding iyakhethwa; yezingxenye ezikhiqizwe ngobuningi.