Brazed sib tsoo taub hau
Brazed sib tsoo taub hau
Paub meej
Raws li qhov sib txawv melting ntsiab lus ntawm solder, brazing yuav muab faib ua mos soldering thiab hard soldering.
Soldering
Mos soldering: lub melting point ntawm solder rau muag muag yog qis dua 450 ° C, thiab lub zog sib koom ua ke yog qis dua (tsawg dua 70 MPa).
Cov khoom muag muag feem ntau yog siv rau kev vuam ntawm cov khoom siv hluav taws xob, airtight thiab watertight hauv kev lag luam hluav taws xob thiab khoom noj khoom haus.Tin welding nrog tin-lead alloy li muab tub lim hlau feem ntau yog siv.Mos solder feem ntau yuav tsum tau siv flux tshem tawm oxide zaj duab xis thiab txhim kho cov wettability ntawm solder.Muaj ntau ntau yam ntawm soldering fluxes, thiab rosin cawv tov yog feem ntau siv rau soldering hauv hluav taws xob kev lag luam.Qhov seem ntawm qhov flux tom qab vuam tsis muaj corrosive cuam tshuam rau lub workpiece, uas yog hu ua non-corrosive flux.Cov flux siv rau vuam tooj liab, hlau thiab lwm yam ntaub ntawv yog tsim los ntawm zinc chloride, ammonium chloride thiab vaseline.Thaum vuam aluminium, fluoride thiab fluoroborate yog siv los ua brazing fluxes, thiab hydrochloric acid thiab zinc chloride kuj siv los ua brazing fluxes.Cov seem ntawm cov fluxes tom qab vuam yog corrosive, hu ua corrosive fluxes, thiab yuav tsum tau ntxuav tom qab vuam.
Brazing
Brazing: lub melting point ntawm brazing muab tub lim hlau yog siab tshaj 450 ° C, thiab lub zog sib koom ua ke siab dua (ntau tshaj 200 MPa).
Brazed pob qij txha muaj lub zog siab, thiab qee qhov tuaj yeem ua haujlwm ntawm qhov kub thiab txias.Muaj ntau hom brazing muab tub lim hlau, thiab txhuas, nyiaj, tooj liab, manganese thiab npib tsib xee-raws li brazing muab tub lim yog siv dav tshaj plaws.Aluminium puag muab tub lim hlau feem ntau yog siv rau brazing aluminium khoom.Nyiaj-raws li thiab tooj liab-raws li solders feem ntau yog siv rau brazing tooj liab thiab hlau qhov chaw.Manganese-raws li thiab nickel-raws li solders feem ntau yog siv los vuam stainless hlau, tshav kub-resistant steel thiab superalloy qhov chaw uas ua hauj lwm ntawm kub kub.Palladium-raws li, zirconium-raws li thiab titanium-raws li solders feem ntau yog siv rau vuam refractory hlau xws li beryllium, titanium, zirconium, graphite thiab ceramics.Thaum xaiv cov hlau muab tub lim, cov yam ntxwv ntawm lub hauv paus hlau thiab cov kev xav tau ntawm kev sib koom ua ke yuav tsum raug txiav txim siab.Brazing flux feem ntau yog tsim los ntawm chlorides thiab fluorides ntawm alkali hlau thiab hnyav hlau, los yog borax, boric acid, fluoroborate, thiab lwm yam, uas tuaj yeem ua hmoov, muab tshuaj txhuam thiab kua.Lithium, boron thiab phosphorus kuj tau ntxiv rau qee cov solders los txhim kho lawv lub peev xwm tshem tawm oxide zaj duab xis thiab ntub dej.Ntxuav cov dej uas seem tom qab vuam nrog dej sov, citric acid lossis oxalic acid.
Lus Cim: Qhov kev sib cuag ntawm lub hauv paus hlau yuav tsum huv si, yog li cov flux yuav tsum tau siv.Lub luag haujlwm ntawm brazing flux yog tshem tawm oxides thiab roj impurities nyob rau saum npoo ntawm lub hauv paus hlau thiab muab tub lim hlau, tiv thaiv qhov chaw sib cuag ntawm cov hlau muab tub lim thiab lub hauv paus hlau los ntawm oxidation, thiab ua rau kom lub wettability thiab capillary fluidity ntawm cov hlau muab tub lim.Lub melting point ntawm cov flux yuav tsum qis dua cov solder, thiab corrosion ntawm cov flux residue ntawm lub hauv paus hlau thiab sib koom yuav tsum tsawg dua.Feem ntau siv flux rau muag muag yog rosin los yog zinc chloride tov, thiab feem ntau siv flux rau brazing yog sib tov ntawm borax, boric acid thiab alkaline fluoride.
Daim ntawv thov thiab feature editing thiab tshaj tawm
Brazing tsis haum rau vuam ntawm cov qauv hlau dav dav thiab hnyav thiab dynamic load qhov chaw.Nws yog tsuas yog siv rau kev tsim cov cuab yeej precision, cov khoom siv hluav taws xob, cov khoom sib txawv ntawm cov hlau tsis sib xws thiab cov txheej txheem nyias nyias, xws li cov khoom siv sandwich, honeycomb structures, thiab lwm yam.Thaum lub sij hawm brazing, tom qab qhov kev sib cuag ntawm lub brazed workpiece yog ntxuav, nws yog sib sau ua ke nyob rau hauv daim ntawv ntawm sib tshooj, thiab muab tub lim hlau yog muab tso rau ze ntawm qhov sib koom tes sib txawv los yog ncaj qha mus rau hauv lub sib sib zog nqus kis.Thaum lub workpiece thiab solder yog rhuab mus rau ib tug kub me ntsis siab tshaj lub melting kub ntawm lub solder, lub solder yuav yaj thiab tsau rau saum npoo ntawm weldment.Cov kua muab tub lim hlau yuav ntws thiab kis mus rau hauv seam nrog kev pab ntawm capillary nkaus.Yog li ntawd, lub brazed hlau thiab muab tub lim hlau yog yaj thiab infiltrated rau hauv ib leeg los tsim ib txheej alloy.Tom qab condensation, lub brazed sib koom ua ke yog tsim.
Brazing tau dav siv nyob rau hauv txhua yam, hluav taws xob, instrumentation, xov tooj cua thiab lwm yam departments.Carbide cov cuab yeej, drilling khoom, tsheb kauj vab thav duab, tshav kub exchangers, conduits thiab ntau yam ntim;Hauv kev tsim cov microwave waveguides, cov raj hluav taws xob thiab cov khoom siv hluav taws xob nqus, brazing yog tib txoj kev sib txuas.
Feature ntawm brazing:
Brazed pob zeb diamond sib tsoo log
Brazed pob zeb diamond sib tsoo log
(1) Lub brazing cua kub kub yog qhov tsawg, qhov sib koom ua ke yog du thiab tiaj tus, kev hloov ntawm microstructure thiab mechanical zog yog me me, deformation me me, thiab workpiece loj yog qhov tseeb.
(2) Nws tuaj yeem txuas cov hlau tsis sib xws thiab cov khoom siv yam tsis muaj kev txwv nruj ntawm qhov sib txawv ntawm cov khoom ua haujlwm.
(3) Qee txoj hauv kev brazing tuaj yeem txuas ntau qhov vuam thiab cov pob qij txha nyob rau tib lub sijhawm, nrog cov khoom lag luam siab.
(4) Cov cuab yeej brazing yog qhov yooj yim thiab kev nqis peev ntau lawm tsawg.
(5) Lub zog sib koom ua ke yog qis, qhov kub tsis zoo, thiab cov kev xav tau ntawm kev ntxuav ua ntej vuam yog nruj, thiab tus nqi ntawm cov khoom siv yog kim.
