Brazing yog cov txheej txheem hlau sib koom ua ke dav siv hauv tshuab cua txias, tub yees, HVAC, tsheb qhov chaw, hluav taws xob, motors, transformers, heat exchangers, thiab industrial equipment manufacturing. Tsis zoo li cov pa welding, brazing feem ntau tsis yaj lub hauv paus hlau. Es tsis txhob, nws heats thiab melts ib tug muab tub lim hlau, uas ntws mus rau hauv lub sib koom sib txawv los ntawm capillary txiav txim thiab tsim ib tug muaj zog, kaw kev twb kev txuas tom qab txias.
Rau cov raj tooj liab, tooj liab, cov khoom siv hlau, thiab cov hlau tsis sib xws, kev sib txuas yog ib qho tseem ceeb ntawm kev sib koom ua ke. Hauv kev lag luam cua txias thiab tub yees, feem ntau ntawm kev sib txuas ntawm lub raj tooj liab yog ua tiav los ntawm kev sib tsoo.
1. Brazing yog dab tsi?
Brazing yog txheej txheem uas siv cov hlau muab tub lim nrog qhov qis qis dua li lub hauv paus hlau. Nyob rau hauv cov cua kub, cov muab tub lim hlau melts thiab ntws mus rau hauv qhov sib txawv ntawm cov workpieces. Tom qab txias, ib txheej txheej sib txuas ntawm cov hlau muab tub lim thiab lub hauv paus hlau, tsim kom muaj kev sib koom ua ke.
Hauv cov ntsiab lus yooj yim:
Brazing=cua sov lub workpiece + melting lub muab tub lim hlau + sau qhov sib koom ua ke sib txawv + txias los tsim kev sib txuas.
Thaum lub sij hawm brazing, lub hauv paus hlau feem ntau tsis yaj. Qhov no yog ib qho ntawm qhov sib txawv tseem ceeb ntawm brazing thiab fusion vuam.
2. Lub hauv paus ua haujlwm ntawm Brazing
Brazing feem ntau yog nyob ntawm peb yam tseem ceeb los ua kom tiav qhov kev sib txuas.
1. Cua sov
Lub workpiece yog rhuab mus rau ib tug haum kub uas siv cov nplaim taws, induction cua sov, rauv cua sov, kuj cua sov, los yog lwm yam kev. Qhov kub no yuav tsum siab tshaj qhov melting point ntawm cov hlau muab tub lim tab sis qis dua qhov melting point ntawm lub hauv paus hlau.
2. Melting ntawm Filler Hlau
Thaum qhov kub nce mus txog qhov chaw melting ntawm cov hlau muab tub lim, cov hlau muab tub lim melts thiab ua kua.
3. Capillary Filling ntawm Joint Gap
Cov kua dej ua kua hlau ntws mus rau hauv qhov sib koom ua ke los ntawm kev ua haujlwm capillary thiab ntub thiab diffuses ntawm lub hauv paus hlau nto. Tom qab txias, qhov sib koom ua ke tsim kev sib txuas ruaj khov.
Brazing zoo nyob ntawm qhov kub thiab txias, kev sib koom ua ke, kev huv huv, thiab kev xaiv hlau muab tub lim.
3. Cov khoom siv dav siv hauv Brazing
Cov khoom siv hauv brazing muaj xws li lub hauv paus hlau, muab tub lim, thiab flux.
1. Base Hlau
Lub hauv paus hlau yog cov khoom siv los koom ua ke. Common base metals muaj xws li:
- Tooj
- tooj dag
- Cov pa roj carbon steel
- Stainless hlau
- Aluminium
- Copper alloys
- Cov hlau tsis sib xws
Hauv kev lag luam cua txias thiab tub yees, feem ntau cov ntawv thov yog tooj liab - mus rau - tooj liab, tooj liab - mus rau - tooj dag, thiab tooj liab - rau - kev sib txuas hlau.
2. Filler Hlau
Cov hlau muab tub lim yog cov khoom uas melts thiab sau cov sib koom ua ke thaum brazing. Common filler metals muaj xws li:
- Silver-raws li cov khoom siv hlau
- Copper -phosphorus muab tub lim
- Brass filler hlau
- Aluminium-raws li cov khoom siv hlau
- Nickel{0}}raws li cov khoom siv hlau
Cov hlau sib txawv yog tsim rau cov khoom sib txawv thiab chaw ua haujlwm. Piv txwv li, tooj liab-phosphorus muab tub lim yog feem ntau siv rau kev sib txuas ntawm cov raj tooj liab. Thaum lub zog siab dua, kev sib khi ua haujlwm, lossis kev tiv thaiv corrosion, nyiaj -raws li cov hlau yuav raug siv.
3. Flux
Flux yog siv los tshem tawm cov hlau nto oxides, txhim kho cov khoom siv hlau ntub dej, thiab txhim kho brazing zoo.
Flux feem ntau yog siv los koom nrog cov hlau, stainless hlau, tooj dag, thiab lwm yam ntaub ntawv. Txawm li cas los xij, hauv qee qhov tooj liab - rau - daim ntawv thov tooj liab, yuav tsis tas yuav muaj cov dej ntxiv thaum phosphorus - muaj cov hlau muab tub lim siv.
4. Hom Brazing tseem ceeb
Brazing tuaj yeem muab faib ua ntau hom raws li cov txheej txheem cua sov.
1. Nplaim Brazing
Nplaim brazing siv cov nplaim taws los ua kom sov lub workpiece. Nws yog ib txoj kev cai thiab dav siv.
Qhov zoo:
- Cov khoom siv qis dua
- Kev ua haujlwm yooj yim
- Haum rau me me -batch ntau lawm lossis kho ua haujlwm
Qhov tsis zoo:
- Muaj kev vam meej ntawm cov neeg ua haujlwm kev paub
- Poorer kub sib xws
- Tsawg stability nyob rau hauv loj ntau lawm
2. Induction Brazing
Induction brazing siv electromagnetic induction rau hauv zos thiab ceev ceev lub workpiece. Nws yog tsim rau loj zus ntawm tooj liab raj, transformers, lub cev muaj zog Cheebtsam, thiab hlau pob qij txha.
Qhov zoo:
- Cov cua kub ceev ceev
- Kev tswj qhov kub thiab txias
- Cov cua sov me me- thaj chaw cuam tshuam
- Zoo sib xws
- Haum rau automated ntau lawm
Rau cov kav dej cua txias, cov yeeb nkab tooj liab, thiab siab - ntim ntau lawm, induction brazing muaj qhov zoo meej.
3. Rauv Brazing
Rauv brazing yog ua nyob rau hauv ib tug tswj - atmosphere los yog lub tshuab nqus tsev rauv. Nws yog haum rau siab - ua batch ntau lawm.
Qhov zoo:
- Tsis zoo li kub
- Cov khoom zoo sib xws
- Haum rau batch ua ntawm complex Cheebtsam
Qhov tsis zoo:
- Cov cuab yeej siv siab dua
- Lub voj voog txheej txheem ntev dua
- Tsis haum rau tag nrho cov loj Cheebtsam los yog localized brazing daim ntaub ntawv
4. Resistance Brazing
Resistance brazing generates tshav kub los ntawm kev hla hluav taws xob tam sim no los ntawm qhov sib koom ua ke. Nws yog qhov tsim nyog rau qee qhov kev sib txuas ntawm cov hlau me me.
Qhov zoo:
- Concentrated cua sov
- Lub sij hawm voj voog ceev ceev
- Yooj yim rau kev sib xyaw ua ke rau hauv cov khoom siv automated
5. Lub ntsiab zoo ntawm Brazing
Brazing yog dav siv vim nws muaj ntau yam zoo.
1. Haum rau nyias -Cov ntaub ntawv phab ntsa
Txij li thaum lub hauv paus hlau feem ntau tsis yaj, brazing yog haum rau nyias - cov phab ntsa tooj liab hlab, precision qhov chaw, thiab cov khoom me me.
2. Kev sib koom ua ke ruaj khov
Nrog rau kev sib koom ua ke tsim thiab cov txheej txheem tsis zoo, brazing tuaj yeem tsim kev sib txuas muaj zog thiab txhim khu kev qha.
3. Kev ua haujlwm zoo sealing
Cov hlau muab tub lim ua rau qhov sib koom ua ke thiab tsim cov qauv sib txuas txuas ntxiv, ua kom zoo tshaj plaws rau cov kav dej tub yees, cov kav dej siab, thiab cov khoom siv hluav taws xob.
4. Haum rau Dissimilar Hlau Sib Koom
Brazing tuaj yeem koom nrog tooj liab rau hlau, tooj liab rau tooj dag, tooj liab rau stainless hlau, thiab lwm yam sib txawv ntawm cov hlau sib txuas.
5. Haum rau Automated Production
Induction brazing, automated nplaim brazing, thiab rauv brazing tuaj yeem ua ke nrog kev pub noj tsis siv neeg, kev tso chaw, thiab kev tshuaj ntsuam xyuas rau siab - ntim ntau lawm.
6. Common Applications of Brazing
Brazing yog siv nyob rau hauv ntau yam kev siv, xws li:
- Cua txias tooj liab raj txuas
- Tub yees system pipeline koom
- Thaum tshav kub kub exchanger manufacturing
- Pipeline txuas nyob ib ncig ntawm compressors
- Transformer tooj liab busbar brazing
- Motor coil kev sib txuas
- Automotive pipelines thiab kev tsim khoom
- Cov cuab yeej, cutter, thiab carbide koom
- Stainless hlau thiab tooj liab qhov sib txuas
Hauv kev lag luam cua txias thiab tub yees, brazing feem ntau yog siv los xyuas kom meej cov kav dej sealing kev ua tau zoo thiab kev ntseeg tau ntawm lub cev.
7. Yam tseem ceeb cuam tshuam rau Brazing zoo
Brazing tej zaum yuav zoo li yooj yim, tab sis ruaj khov siab - cov pob qij txha zoo yuav tsum tau tswj ntau yam.
1. Kev huv ntawm qhov chaw
Roj, oxide txheej, plua plav, thiab ya raws ntawm qhov chaw ua haujlwm tuaj yeem cuam tshuam rau cov hlau ntub dej, ua rau cov pob qij txha tsis muaj zog, porosity, los yog to.
Kev daws:
- Degrease ua ntej brazing
- Tshem tawm cov oxide txheej
- Khaws qhov sib koom ua ke kom qhuav thiab huv si
- Siv flux thaum tsim nyog
2. Kev sib koom ua ke
Brazing cia siab rau txoj haujlwm capillary los sau qhov sib koom ua ke. Yog tias qhov sib txawv loj dhau, cov hlau muab tub lim yuav tsis sau kom zoo. Yog tias qhov sib txawv me dhau, cov hlau muab tub lim yuav tsis ntws txaus.
Kev daws:
- Tswj kev nthuav dav thiab txo qhov ntev
- Xyuas kom meej sib dhos clearance
- Siv cov khoom tsim nyog rau qhov chaw
- Tshawb xyuas qhov loj me thaum lub sijhawm tsim khoom loj
3. Cua sov
Yog tias qhov ntsuas kub qis dhau, cov hlau muab tub lim tsis tuaj yeem yaj thiab ntws zoo. Yog tias qhov kub thiab txias heev, overheating, oxidation, los yog lub hauv paus hlau degradation yuav tshwm sim.
Kev daws:
- Teem lub cua sov kom zoo
- Tswj lub sijhawm cua sov
- Siv cov ntsuas kub los yog cov tshuab tswj tsis siv neeg
- Teem cov txheej txheem tshwj xeeb rau cov khoom sib txawv
4. Filler Hlau Xaiv
Hom hlau muab tub lim cuam tshuam rau kev sib koom ua ke lub zog, flowability, corrosion kuj, thiab kev pabcuam kub.
Kev daws:
- Xaiv cov hlau nplaum raws li lub hauv paus hlau
- Xav txog cov khoom ua haujlwm ib puag ncig
- Xaiv cov hlau muab tub lim raws li lub zog thiab kev sib khi
- Tsis txhob tsis sib haum ntawm cov hlau muab tub lim thiab lub hauv paus hlau
5. Cua sov sib xws
Cov cua kub tsis sib xws tuaj yeem ua rau cov hlau tsis txaus txaus, tsis tiav brazing, lossis cov cua sov hauv zos.
Kev daws:
- Optimize nplaim taws los yog induction coil txoj hauj lwm
- Siv cov khoom siv tshwj xeeb rau qhov chaw ruaj khov
- Tsis txhob tso cua sov tsuas yog muab cov hlau tsis muaj cua sov rau lub hauv paus hlau
- Validate tus txheej txheem rau complex qauv
8. Feem ntau Brazing Defects thiab ua rau
Feem ntau cov teeb meem brazing muaj xws li:
1. Cov pob qij txha tsis muaj zog
Tej yam ua tau muaj xws li qhov kub tsis txaus, qhov chaw tsis huv, lossis cov khoom siv hlau tsis zoo.
2. Tsis muaj Brazing
Qhov no feem ntau tshwm sim los ntawm cov cua kub tsis sib xws, cov hlau tsis txaus, lossis kev sib koom ua ke tsis raug.
3. Porosity
Porosity tuaj yeem tshwm sim los ntawm qhov chaw paug, noo noo residue, siv cov dej tsis zoo, lossis cua sov sai heev.
4. Cua sov
Kev kub siab heev lossis lub sijhawm cua sov ntev dhau los yuav ua rau muaj oxidation loj lossis puas tsuaj rau lub hauv paus hlau.
5. Cov dej ntws tawm
Cov dej xau yog ib txwm muaj nyob rau hauv cov kav dej tub yees thiab feem ntau yog cuam tshuam nrog kev ua kom tsis tiav, kev sib koom ua ke tsis ruaj khov, lossis kev tu tsis txaus.
Qhov tseem ceeb ntawm kev txo cov teeb meem no yog tsim kom muaj cov txheej txheem ruaj khov rau ua ntej -brazing tu, sib dhos qhov chaw, tswj qhov kub thiab txias, thiab tom qab- kev tshuaj xyuas brazing.
9. Qhov txawv ntawm Brazing thiab Vuam yog dab tsi?
Ntau tus neeg tsis meej pem brazing nrog cov pa welding. Qhov txawv tseem ceeb yog:
- Brazing:Lub hauv paus hlau feem ntau tsis yaj. Cov hlau muab tub lim melts thiab sau qhov sib koom ua ke.
- Vuam:Lub hauv paus hlau feem ntau melts hauv zos thiab tsim kev sib txuas tom qab txias.
Brazing yog tsim nyog rau nyias- cov phab ntsa, cov khoom precision, cov hlau tsis sib xws, thiab cov pob qij txha xav tau kev sib khi zoo. Pa welding yog tsim nyog rau thicker structural hlau qhov chaw nrog ntau zog yuav tsum tau.
10. Automation Trends hauv Brazing
Raws li cov tuam ntxhab xav tau kev ua haujlwm siab dua, zoo, thiab sib xws, brazing yog txav mus rau automation thiab ntse ntau lawm.
Automated brazing khoom tuaj yeem ua ke:
- Tsis siv neeg thauj khoom
- Tsis siv neeg qhov chaw
- Tsis siv neeg clamping
- Tsis siv neeg cua sov
- Tsis siv neeg hlau pub
- Tsis siv neeg txias
- Tsis siv neeg soj ntsuam
- Tsis siv neeg unloading
Piv nrog rau phau ntawv brazing, automated brazing muaj cov hauv qab no zoo:
- Ntau ruaj khov brazing zoo
- Kev tswj cov cua kub zoo dua
- Ntau lawm efficiency
- Tus nqi zog qis dua
- Cov khoom zoo sib xws
- Haum rau kev tsim khoom loj
Nyob rau hauv cov cua txias, tub yees, tooj liab tube ua, thiab hluav taws xob industries, induction brazing thiab automated brazing khoom tau dhau los ua dav siv.
Xaus
Brazing yog txheej txheem kev sib koom ua ke uas siv qhov qis -melting-point muab tub lim hlau los txuas cov hlau ua haujlwm. Nws muaj qhov zoo xws li qhov me me ntawm cov hlau melting, zoo sealing kev ua tau zoo, thiab haum rau nyias - cov phab ntsa thiab cov hlau sib txawv.
Nyob rau hauv cov cua txias, tub yees, HVAC, tshav kub exchangers, motors, transformers, thiab industrial manufacturing, brazing yog ib tug tseem ceeb heev kev koom tes txoj kev. Txhawm rau ua kom tau siab- cov pob qij txha zoo, cov tuam txhab lag luam yuav tsum tau tswj xyuas qhov huv huv, kev sib koom ua ke, kev sib koom ua ke, qhov kub thiab txias, kev xaiv hlau muab tub lim, thiab tom qab- kev tshuaj xyuas brazing.
Raws li kev siv tshuab thev naus laus zis txuas ntxiv txhim kho, brazing yuav txav mus rau kev ua haujlwm siab dua, zoo sib xws, thiab kev tsim khoom ntse dua, muab cov tuam txhab lag luam nrog kev ruaj khov thiab txhim khu kev koom nrog kev daws teeb meem.
