Aluminium alloy welding yog qhov sib txawv ntawm cov vuam ntawm cov pa roj carbon steel, stainless hlau thiab lwm yam ntaub ntawv. Nws yog ib qho yooj yim los tsim ntau yam tsis xws luag uas lwm cov ntaub ntawv tsis muaj, thiab cov phiaj xwm ntsuas yuav tsum tau ua kom zam lawv. Cia peb saib cov teeb meem uas yooj yim tshwm sim hauv aluminium alloy welding thiab qhov yuav tsum tau ua rau vuam tshuab.
Kev nyuaj hauv vuam aluminium alloy cov ntaub ntawv Cov thermal conductivity ntawm aluminium alloy cov ntaub ntawv yog 1 mus rau 3 npaug ntau dua li cov hlau, thiab nws yog ib qho yooj yim kom sov. Txawm li cas los xij, cov khoom no tsis tiv taus qhov kub thiab txias thiab muaj cov coefficient loj ntawm kev nthuav dav thaum rhuab, uas yooj yim ua rau vuam deformation. Tsis tas li ntawd, cov khoom siv no yog qhov yooj yim rau cov kab nrib pleb thiab vuam nkag thaum lub sij hawm vuam, tshwj xeeb tshaj yog cov vuam ntawm nyias nyias daim hlau yog qhov nyuaj dua.
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Aluminium alloy welding yuav tsim ib tug npaum li cas ntawm hydrogen nyob rau hauv lub molten pas dej ua ke. Yog tias cov roj no tsis raug tso tawm ua ntej lub vuam tsim, nws yuav ua rau lub qhov hws hauv qhov vuam thiab cuam tshuam rau qhov zoo ntawm cov khoom siv welded.
Aluminium yog cov hlau uas yooj yim oxidized, thiab yuav luag tsis muaj txhuas tsis muaj oxidized nyob rau hauv cov huab cua. Thaum lub npoo ntawm aluminium alloy yog ncaj qha mus rau huab cua, ib tug ntom thiab insoluble aluminium oxide zaj duab xis yuav tsim rau nws nto. Cov oxide zaj duab xis yog qhov hnav-tiv taus thiab kub-resistant, nrog lub melting point ntawm tshaj 2000 degrees Celsius. Thaum tsim, cov txheej txheem tom ntej yuav nyuaj heev.
Aluminium alloy welding kuj muaj teeb meem xws li kev sib koom ua ke yog ib qho yooj yim rau soften, thiab qhov nro nyob rau hauv lub xeev molten yog me me thiab yooj yim los tsim qhov tsis xws luag.
Qhov yuav tsum tau ua rau aluminium alloy vuam txheej txheem
Ua ntej tshaj plaws, los ntawm qhov kev xav ntawm cov khoom siv vuam, yog siv lub tshuab MIG / MAG, nws yuav tsum muaj lub zog pulse xws li ib qho mem tes lossis ob lub mem tes. Ob chav mem tes muaj nuj nqi zoo tshaj plaws. Ob chav mem tes yog superposition ntawm high-frequency mem tes thiab low-frequency mem tes, thiab low-frequency mem tes yog siv los hloov cov mem tes siab. Nyob rau hauv txoj kev no, ob chav mem tes tam sim no yog tsau ntawm qhov zaus ntawm cov mem tes qis kom hloov pauv ntawm lub ncov tam sim no thiab lub hauv paus tam sim no, kom cov weld tsim cov nplai ntses tsis tu ncua.
Yog tias koj xav hloov cov txiaj ntsig ntawm kev sib txuas, koj tuaj yeem kho qhov zaus thiab ncov tus nqi ntawm cov mem tes qis. Kho qhov tsawg zaus mem tes zaus yuav cuam tshuam qhov kev hloov ceev ntawm tus nqi ncov thiab lub hauv paus tus nqi ntawm ob chav mem tes tam sim no, uas yuav hloov qhov sib nrug ntawm tus ntses nplai qauv ntawm lub vuam. Qhov loj dua qhov hloov ceev, qhov me me ntawm qhov sib txawv ntawm cov ntses nplai. Kev kho tus nqi siab tshaj plaws ntawm cov mem tes tsawg zaus tuaj yeem hloov pauv cov nyhuv nplawm ntawm lub pas dej molten, yog li hloov qhov vuam qhov tob. Xaiv qhov tsim nyog ncov tus nqi muaj txiaj ntsig zoo rau kev txo qis ntawm qhov pores, txo cov cua sov nkag, tiv thaiv kev nthuav dav thiab deformation, thiab txhim kho weld lub zog.
Tsis tas li ntawd, los ntawm kev xav ntawm cov txheej txheem vuam, cov teeb meem hauv qab no yuav tsum raug sau tseg:
Ua ntej, qhov saum npoo ntawm aluminium alloy yuav tsum tau ntxuav ua ntej vuam, thiab tag nrho cov plua plav thiab roj yuav tsum tau muab tshem tawm. Acetone tuaj yeem siv los ntxuav qhov chaw ntawm aluminium alloy vuam taw tes. Rau tuab phaj aluminium alloy, nws yuav tsum tau ntxuav nrog ib tug hlau txhuam ua ntej, thiab ces nrog acetone.
Qhov thib ob, cov khoom siv vuam hlau siv yuav tsum nyob ze rau cov khoom siv niam txiv li sai tau. Seb puas yuav xaiv aluminium silicon vuam hlau lossis aluminium magnesium vuam hlau yuav tsum tau txiav txim siab raws li qhov yuav tsum tau ua ntawm vuam. Tsis tas li ntawd, aluminium magnesium welding hlau tsuas yog siv los ua cov khoom siv aluminium magnesium, thaum txhuas silicon vuam hlau yog siv dav dua. Nws tuaj yeem vuam cov ntaub ntawv aluminium silicon thiab aluminium magnesium cov ntaub ntawv.
Thib peb, thaum lub thickness ntawm lub phaj loj, lub phaj yuav tsum tau preheated ua ntej, txwv tsis pub nws yog ib qho yooj yim rau welding los ntawm. Thaum kaw lub arc, me me tam sim no yuav tsum tau siv los kaw lub arc thiab sau lub qhov.
Plaub, thaum ua tungsten inert gas arc vuam, DC argon arc vuam tshuab yuav tsum tau siv, thiab rau pem hauv ntej thiab thim rov qab AC thiab DC yuav tsum tau siv sib hloov. Forward DC yog siv los ntxuav qhov oxidation pwm ntawm txhuas cov ntaub ntawv, thiab rov qab DC yog siv rau vuam.
Tsis tas li ntawd nco ntsoov tias cov vuam specifications yuav tsum tau teem raws li lub phaj thickness thiab weld yuav tsum tau; MIG vuam yuav tsum siv lub tshwj xeeb aluminium hlau pub log thiab Teflon hlau qhia raj, txwv tsis pub txhuas chips yuav raug generated; Lub vuam phom cable yuav tsum tsis txhob ntev dhau lawm, raws li txhuas vuam hlau yog mos thiab ib tug ntev vuam phom cable yuav cuam tshuam rau hlau noj stability.
Post lub sij hawm: Aug-27-2024
