Brazing The ethe-ethe yeCrafts for Precision Ukujoyina

I-Brazing ayinyibiliki isiseko sesinyithi kodwa ifezekisa ukudibanisa ngokunyibilikisa i-low-melting-point brazing filler metal ukuzalisa izithuba. Ibonisa i-welds flat kunye ne-deformation encinci, iyenza ifaneleke ukuchaneka kwezinto ezichanekileyo, izinto ezingafaniyo, kunye nezakhiwo ezinzima. Kuyimfuneko kakhulu kwiinkalo ezifana ne-electronics, i-aerospace, kunye nezixhobo zonyango. Ngokwendawo yokunyibilika yentsimbi yokuqhafaza, i-brazing ihlulwe ibe ngamacandelo amabini: i-soft brazing kunye ne-brazing enzima.

(I) I-Soft Brazing: "UkuDityaniswa okuNcinci" kuMalunga oMbane

Ukubrawuza okuthambileyo kusebenzisa isinyithi sokubrawuza esinendawo yokunyibilika engaphantsi kwama-450°C. Isinyithi esiqhelekileyo esisetyenziswayo sokuzalisa i-tin-lead alloy (ithatyathelwa indawo yi-alloy-free tin alloy). I-Flux isetyenziswa ngexesha le-welding ukususa iifilimu ze-oxide kunye nokunciphisa ukuxinezeleka komhlaba. Ilungele ukudityaniswa ngokuchanekileyo kwamacandelo e-elektroniki, iibhodi zesekethe, kunye nokudityaniswa kwemibhobho yamanzi, phakathi kwayo i-soldering yeyona teknoloji iqhelekileyo yokubrawuza.

1. I-Soldering: I-"Basic Skill" yokuWelding yeBhodi yeSekethe

Umgaqo: Intsimbi yokuthambisa itshisa i-workpiece (iqondo lobushushu 250-350 ° C), inyibilikisa ucingo lwetin olungenalothe (indawo yokunyibilika malunga ne-227 ° C). Ngaphantsi kwesenzo se-flux, i-tin etyhidiweyo igcwalisa i-gap phakathi kwezikhonkwane zecandelo kunye neepadi zebhodi yesiphaluka, yenza i-solder joint emva kokupholisa.

Amanqaku okusebenza:

Ukucocwa kwangaphambili kwe-Welding: Sebenzisa i-sandpaper ukupholisa izikhonkwane zecandelo kunye neepads ukususa iileyile ze-oxide; Sula ibhodi yesiphaluka ngotywala ukuze ususe amabala e-oyile kwaye ugweme i-solder ebandayo.

Ubuchwephesha bokufudumeza: Okokuqala, zisa incam yentsimbi yokuthambisa ukuze idibane nesixhobo sokusebenza (isiphambuka sephini kunye nepad). Emva kokufudumeza i-1-2 imizuzwana, yondla ucingo lwe-tin. Kuphephe ukufudumeza ngokuthe ngqo ucingo lwenkcenkce, olunokubangela "i-solder ebandayo" (i-tin etyhidiweyo iyasilela ukumanzisa ngokupheleleyo i-workpiece).

I-Solder Joint Control: Ubungakanani bocingo lwe-tin kufuneka "lukwanele ukuzalisa isithuba ngaphandle kokuphuphuma." I-solder joint kufuneka ibe "conical." Musa ukugubha icandelo ngaphambi kokupholisa ukuthintela ukuphuka kwe-solder joint.

(II) I-Hard Brazing: "Isiqinisekiso esinoNgqondo" seZiqendu ezichanekileyo ezichanekileyo

Ukubrawuza okunzima kusebenzisa isinyithi sokubrawuza esinendawo yokunyibilika engaphezu kwama-450°C. Izizalisi ezisetyenziswa ngokuqhelekileyo ziyi-copper-zinc alloy (i-brass brazing filler) kunye ne-alloy-based alloy (isilivere ye-brazing filler). Ibonisa ubushushu obuphezulu be-welding kunye namandla aphezulu e-weld, okwenza ukuba ilungele ukuwelda izinto ezichanekileyo ezichanekileyo ezifana nezixhobo zokusika, abatshintshi bobushushu, kunye neenjini ze-aero-injini.

Amanqaku okusebenza: Ukutshisa isiseko sesinyithi phambi kwe-welding (ubushushu be-300-500 ° C) ukuqinisekisa ukuhamba okupheleleyo kwesinyithi sokuzalisa i-brazing; sebenzisa i-flux efana ne-borax kunye ne-boric acid ukususa ifilimu ye-oxide kwisiseko sesinyithi; yenza unyango olucothayo lokupholisa emva kwe-welding (umzekelo, ukubeka kwibhokisi yokufaka i-insulation) ukuthintela iintanda ezibangelwa ukungafani okukhulu kobushushu.

(III) Isicwangciso-qhinga sokuKhetha kunye neeNdlela zoPhuhliso zeNdlela zokuWelding

Ukujongana neendlela ezahlukeneyo ze-welding, indlela yokukhetha iteknoloji efanelekileyo ngokweemfuno zangempela ngundoqo ekuphuculeni umgangatho we-welding kunye nokusebenza kakuhle. Kwangaxeshanye, ngophuhliso lwetekhnoloji yoshishino, itekhnoloji ye-welding iphinda iguqukele "kwi-intelligence and greenization."

(IV) Izinto eziphambili zokuKhetha i-Welding Method

Iimpawu zeBase Metal: Kwintsimbi ephantsi kwekhabhoni, iphambili inikwa i-SMAW kunye ne-CO₂ welding; kwintsimbi engenasici, i-TIG welding kunye ne-laser welding zikhethwa; kwi-alloys ye-aluminium, i-AC TIG ye-welding ikhethiwe; kumacandelo e-elektroniki, i-soldering iyasetyenziswa.

IiMfuno zeMveliso: Kumacandelo achanekileyo (njengamacandelo e-aerospace), i-laser welding kunye ne-TIG welding ikhethwa; ukwenzela iindawo eziveliswe ngobuninzi.