Aluminium brazing

Esikhathini ukukhiqizwa zasendlini aluminium futhi Alloys yayo silumin, duralumin - isicelo kabanzi kakhulu. Lezi izinto usebenze kanye nemikhiqizo umzimba, futhi izintambo amadivayisi ezahlukene.

Yini okumele uyenze uma kudingeka solder the aluminium ingxenye noma solder wire bawa off kwale nto engasindi? Brazing insimbi jikelele, kanye ne-aluminium ngokukhethekile - ngokuvamile umsebenzi evamile nje kudinga ubuchwepheshe. Ngokwakhe aluminium futhi Alloys nge iqhaza lakhe isakhiwo edabukisayo. Ngaphansi kwethonya lomoya-mpilo asemkhathini kusukela izingxenye zensimbi ezithwalwa okuqinile oxide ifilimu, ngenxa lapho aluminium brazing kuba inselele. Ngemva oxide kuvimbela okunokwethenjelwa soldered uxhumano izingxenye. Kulesi sihloko ungafunda mayelana nendlela efanele enze brazing aluminiyamu ekhaya usebenzisa solder, okuhlanganisa isahola: POS 50 POS 61 POS 90.

Indlela yokuqala. Uma udinga ukuba soldered komunye nomunye pair of izintambo ehlanganisa aluminium, kubalulekile ukuba uqale nge zaludit ezinhle kubo. Enisemikhawulweni izintambo solder esikhulu rosin Phansi okuvalelwe lokukhuhla izinombolo yesibili futhi ngensimbi eshisayo nokunamathisela ngomthofu (okuyilona elisebenzayo futhi kudingekile pre zaludit) ngezintambo yayicindezele lokhu isikhumba. Ngo inqubo udinga njalo ukwengeza rosin ukususa yensimbi nokunamathisela ngomthofu ensimbini kunoma isiphi isimo akufanele kube. Lo msebenzi liphindwe ize iphumelele ukuba ithini izintambo kahle. Khona ungaqala nokunamathisela ngomthofu. Uma esikhundleni rosin asetshenziselwe ukuhlanza izikhali ane-alikhali noma uwoyela amaminerali ukuthi Athambisa umshini wokuthunga, futhi inqubo ukulungiselela, kanye ne-aluminium brazing ngeke okungadala ubunzima. Yiqiniso, uma ube nokuzaza ngitjho nakho okuncane ngokuhamba lezi zindaba.

Eyesibili indlela. Good at nokunamathisela ngomthofu aluminium amashidi. Esikhundleni weld isetshenziswa rosin, lapho nquma imvuthuluka elincane lensimbi, omhlophe webhola ke kumelwe kudlule izikhathi eziningana grassing ashisayo nokunamathisela ngomthofu yensimbi, njalo unezela solder. Iphuzu kule ndlela itholakala lokuthi ukuthi emakhoneni ebukhali uthuli ukunwaya ziyozihlubula ifilimu oxide, futhi uma akuvimbeli tin kusukela solder adhesion ezinhle substrate, kanye ne-aluminium brazing kuba yinto elula.

Into esemqoka - khumbula lo mthetho: i-mkhulu ishidi aluminium, namandla kumelwe abe insimbi nokunamathisela ngomthofu. Uma ubhekana nenselele ukushisela amashidi mncane, nokunamathisela ngomthofu yensimbi 50W ukubhekana kahle. Esimweni lapho ukushuba ishidi a milimitha noma ngaphezudlwana, uzodinga yensimbi nokunamathisela ngomthofu 90 Watts. Uma udinga amashidi aluminium brazing, amapuleti okuyinto aqukethe ezimbili milimitha ukujiya, ngaphambi nokunamathisela ngomthofu kufanele Preheat kwensimbi, ufaka isicelo yokucucuza bese ziqale inqubo uphawu. Ngo indlela yesibili, njengezakuqala, kungasetshenziswa Esikhundleni samafutha ecucuza esekelwe uwoyela amaminerali.

Inketho lwesithathu. Ngaphambi kokuqhubeka ngqo nokunamathisela ngomthofu kufanele kwenziwe phezu isici ukuthi une ukusebenza, "sethusi Plating" inqubo. Ngenxa yale njongo, efanelekayo galvanizing isitshalo, kodwa uma akusiyo ngakwesokunene, ungenza ngaphandle kwalo. Qala nge isicelo kanzulu zethusi sulfate endaweni nokunamathisela ngomthofu esusa lokukhuhla. Khona-ke ukuxhuma kwi-negative izingxenye esibulalayo amabhethri noma ibhethri. hambisa Positive oxhumana naye nge-wire yethusi eqondiswa ingxenye napped of the isixubho ngendlela ukuthi engenzi uthinte ebusweni aluminium ngenxa bristles projecting. Ngemva kwesikhathi ethile endaweni lwezinto usuzosebenzisa nokunamathisela ngomthofu, lihlehla ungqimba elincanyana wethusi. Kufanele ngamanzi, omisiwe, bese zaludit ngendlela ezivamile (nge nokunamathisela ngomthofu).